Authors
81 authors
Allyson Y. Schwartz
Allyson Y. Schwartz, President and CEO of the Better Medicare Alliance and a former member of the U.S. House of Representatives from Pennsylvania who served from 2005-2015, is a nationally recognized leader on health care issues. Better Medicare Alliance is the leading advocacy coalition supporting Medicare Advantage. Having worked as a health service executive, Schwartz was elected to the Pennsylvania State Senate in 1990, serving 14 years until her election to Congress. In the state Senate, Schwartz was the driving force behind Pennsylvaniaâs CHIP program, which was a model for the federal CHIP program five years later. In Congress, Schwartz was appointed to the Ways and Means Committee and served as a senior member of the Budget Committee. In both capacities, Schwartz was a strong advocate for Medicare. She was the leader in Congress on physician payment reform to encourage value over volume, supported research, innovation, and use of technology to improve quality, efficiency and contain costs. Schwartz is a Distinguished Policy Fellow at the University of Pennsylvania's Leonard Davis Institute of Health Economics, Visiting Fellow at the Penn Wharton Public Policy Initiative and Co-Chair of the Bipartisan Policy Center Health and Housing Task Force.
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Alexander Arnon
Alexander Arnon leads much of PWBM's applied policy analysis work, with primary responsibility for microsimulation modeling and conventional budget scoring. His work spans a wide range of policy areasâincluding tax policy, immigration, demographics, labor markets, and major fiscal legislationâand focuses on producing timely, rigorous estimates of how policy changes affect the federal budget and U.S. economy.
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Aidan O'Connell
Aidan graduated from the College of William & Mary with a BA in public policy and economics in 2022. At PWBM, he advances data and estimation efforts in the population microsimulation model. His work aims to improve life cycle projections of earnings, wealth accumulation, and educational attainment.
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Alan J. Auerbach
Alan J. Auerbach is the Robert D. Burch Professor of Economics and Law, Director of the Burch Center for Tax Policy and Public Finance, and former Chair of the Economics Department at the University of California, Berkeley. He is also a Research Associate of the National Bureau of Economic Research and previously taught at Harvard and the University of Pennsylvania, where he also served as Economics Department Chair. Professor Auerbach was Deputy Chief of Staff of the U.S. Joint Committee on Taxation in 1992 and has been a consultant to several government agencies and institutions in the United States and abroad. He served as an Executive Committee Member and Vice President of the American Economic Association, as Editor of that associationâs Journal of Economic Perspectives and American Economic Journal: Economic Policy, and as President of the National Tax Association, from which he received the Daniel M. Holland Medal in 2011. Professor Auerbach is a Fellow of the American Academy of Arts and Sciences, the Econometric Society, and the National Academy of Social Insurance.
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Austin Herrick
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Arnold Ventures
Arnold Venturesâ core objective is to maximize opportunity and minimize injustice. Arnold Ventures is a philanthropy dedicated to tackling some of the most pressing problems in the United States. We invest in sustainable change, building it from the ground up based on research, deep thinking, and a strong foundation of evidence. We drive public conversation, craft policy, and inspire action through education and advocacy.
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Brendan Novak
Brendan Novak is a researcher and policy analyst interested in the intersection of data science, economics, and public policy. At PWBM he serves as a model developer and policy analyst focused on tax microsimulation, data generation, and distributional analysis of U.S. fiscal policy.
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Austan D. Goolsbee
Austan D. Goolsbee is the Robert P. Gwinn Professor of Economics at the University of Chicago Booth School of Business. He previously served in Washington as the Chairman of the Council of Economic Advisers and a member of the President's cabinet. His research has earned him recognition as a Fulbright Scholar and an Alfred P. Sloan fellow. In prior years he was named one of the 100 Global Leaders for Tomorrow by the World Economic Forum, and one of the six "Gurus of the Future" by the Financial Times. His ability to explain economics clearly has made Goolsbee popular in the media. Jon Stewart describes him as "Eliot Ness meets Milton Friedman" and he has twice been named as a "star" professor by BusinessWeek's "Guide to the Best Business Schools." Goolsbee serves on the Economic Advisory Panel to the Federal Reserve Bank of New York and has previously served on the Panel of Economic Advisors to the Congressional Budget Office, the U.S. Census Advisory Commission and as a special consultant for Internet Policy to the Antitrust Division of the Department of Justice. He joined Chicago Booth in 1995.
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Brendan Warshauer
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Cate Taylor
Cate comes to the Penn Wharton Budget Model with a background in public policy, innovation, and corporate impact. Before joining Penn, she was a Fortune 500 executive, an entrepreneur, and she served as the National Security Councilâs Director for International Finance Policy. Her research focuses on the economic and societal efficacy of enterprisesâ Environmental, Social and Governance (ESG) initiatives and the relationship between enterprisesâ impact initiatives and public policy.
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Christine Park
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Denis Ebby
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Daniela Viana Costa
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David Trone
Congressman David Trone was elected in 2018 to serve Maryland's Sixth Congressional District, which includes all or part of Montgomery, Frederick, Garrett, Allegany, and Washington Counties. David serves on the Education and Labor, Foreign Affairs, and Joint Economic Committees, where he is fighting to make progress on issues that matter to Marylanders, including the opioid epidemic, criminal justice reform, and funding for mental health research.
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Duncan Haystead
Duncan Haystead graduated from the University of California, Berkeley with a B.A. in mathematics. He works on the microsim side of the PWBM model.
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Dylan Moskowitz
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Eaton Lin
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Ed Murphy
Ed Murphy is a policy expert whose work focuses on analyzing developments in federal fiscal policy. At PWBM, he is responsible for producing models of federal spending and contributing to analyses of policy proposals. Prior to joining PWBM, he spent seven years with the Peter G. Peterson Foundation, where he created blogs, analyses, and graphics that summarized fiscal and economic policy issues for a general audience, and also managed a portfolio of grants to think tanks working on fiscal and economic policy research. He holds a Master of Public Policy with a concentration in public budgeting and finance from the Edward J. Bloustein School at Rutgers University.
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Efraim Berkovich
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Ezekiel J. Emanuel
Ezekiel J. Emanuel is Vice Provost for Global Initiatives and chair of the Department of Medical Ethics and Health Policy at the University of Pennsylvania. From January 2009 to January 2011, he served as special advisor for health policy to the director of the White House Office of Management and Budget. Since 1997 he was chair of the Department of Bioethics at The Clinical Center of the National Institutes of Health and a breast oncologist. Dr. Emanuel received his M.D. from Harvard Medical School and his Ph.D. in political philosophy from Harvard University. After completing his internship and residency in internal medicine at Boston's Beth Israel Hospital and his oncology fellowship at the Dana-Farber Cancer Institute, he joined the faculty at the Dana-Farber Cancer Institute. He has since been a visiting professor at the University of Pittsburgh School of Medicine, UCLA, the Brin Professor at Johns Hopkins Medical School, and the Kovitz Professor at Stanford Medical School and visiting professor at New York University Law School. Dr. Emanuel has written and edited 9 books and over 200 scientific articles. He is currently a columnist for the New York Times.
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Felipe Ruiz Mazin
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Felix Reichling
Felix Reichling joined the Penn Wharton Budget Model with a background in public policy analysis and macroeconomic research. He previously served as Chief of the Fiscal Policy Analysis Unit in the Congressional Budget Office's (CBO) Macroeconomic Analysis Division. In that role, he led a team of economists in model development and research regarding the macroeconomic effects of fiscal policy, including dynamic scoring. Before joining the CBO, he worked as an economic consultant. At PWBM, Felix focuses on healthcare, immigration, and OLG model development.
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GermĂĄn SĂĄnchez SĂĄnchez
GermĂĄn SĂĄnchez SĂĄnchez is an economist whose research interests lie at the intersection of macroeconomics, finance, and real estate. His prior research focused on developing quantitative models of housing and mortgage markets, with particular emphasis on understanding the effects of policy interventions on these markets, as well as their implications for financial stability and welfare.
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Grace Sam
Grace joins Penn Wharton Budget Model with a background in economics, data science, and public policy. She holds an M.S. in Data Analytics and Public Policy from Carnegie Mellon University, an M.A. in Economics from the Delhi School of Economics, and a B.A. in Economics from St. Stephenâs College, University of Delhi. Her research and professional interests lie at the intersection of data, economics, and social impact, with a focus on using machine learning and statistical modeling to inform public policy.
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Gregory L. Rosston
Gregory L. Rosston is Director of the Public Policy program at Stanford University, a Senior Fellow and Deputy Director of the Stanford Institute for Economic Policy Research, and Professor of Economics (by courtesy). Dr. Rosston served as Deputy Chief Economist at the Federal Communications Commission working on the implementation of the Telecommunications Act of 1996 and helped to design and implement the first ever spectrum auctions in the United States. In 2011, he was Senior Economist for Transactions for the Federal Communications Commission for the proposed AT&T â T-Mobile transaction. He co-chaired the Economy, Globalization and Trade committee for the 2008 Obama campaign and was a member of the Obama transition team on economic agency review and energy policy. He served as a member and co-chair of the Department of Commerce Spectrum Management Advisory Committee from 2010 â 2014. Dr. Rosston received his Ph.D. in Economics from Stanford University and his A.B. with Honors in Economics from University of California at Berkeley. He serves as Board member of the Stanford Federal Credit Union and the Nepal Youth Foundation and as an Advisory Board member of Sustainable Conservation.
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Jagadeesh Gokhale
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James Finucane
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Jason Sockin
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Isaac Tham
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Jennifer Branscom
Jennifer Branscom is Program Manager at Penn Wharton Budget Model where she is involved in the design and delivery of programs, communications, and events that support PWBM's mission to provide accurate, accessible, and transparent economic analysis of public policy. She manages the Wharton Public Policy Certificate Program, which is designed for Congressional staffers and other public policy professionals seeking to strengthen their understanding of the economics of public policy.
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JesĂșs Villero
JesĂșs Villero is an economist with research interests spanning labor, public, and development economics. His work focuses on education policy, labor market dynamics, and economic demography. At PWBM, JesĂșs provides technical support to the microsimulation and policy analysis teams, contributing expertise in causal inference and applied economics research.
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Jinjing Yang
At PWBM, Jinjing leads the development of an automated framework for integrating and maintaining complex economic models, including the microsimulation model, economic projections, the tax simulator, the OASI calculator, other budget projections and the OLG model. Her work focuses on streamlining model execution, validating inputs and outputs, improving cross platform reliability, and supporting scalable, maintainable policy analysis.
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Joao F. Gomes
Professor Gomesâ expertise is in the areas of macroeconomics and financial markets where he has taught several courses to undergraduate, MBA and doctoral students both at Wharton and around the world. He received his PhD and MA from the University of Rochester and BA from New University of Lisbon, Portugal. His recent research covers the determinants of the corporate investment and financing decisions of firms and the links to movements in financial markets, and to monetary and fiscal policies. He has won several awards including the Smith Breeden Prize for Best Asset Pricing Paper published in the Journal of Finance, with a study on the links between leverage and returns, and was nominated for the Brattle Prize for Best Corporate Finance Paper in the same journal, with earlier work on the performance of conglomerates. Professor Gomes's previous appointments include a professorship at the London Business School. In addition, he has visited several other universities and research centers, including the University of British Columbia in Canada, the New University of Lisbon in Portugal, and the Federal Reserve Bank of Minneapolis. Early in his career he has also served as an ad-hoc economic advisor to the Ministry of Industry of Portugal.
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John N. Friedman
John N. Friedman is an Associate Professor of Economics and International Affairs and Public Policy at Brown University. His research brings together theory and data and harnesses the power of large administrative datasets to yield policy-relevant insights on a wide range of topics, including taxation, education, retirement, and healthcare. His work has appeared in top academic journals as well as in major media outlets, and his work was cited by President Obama in his 2012 State of the Union Address. From 2013-2014, Prof. Friedman worked as Special Assistant to the President for Economic Policy at the National Economic Council in the White House. He holds a Ph.D. in Economics, an A.M. in Statistics, and a B.A. in Economics, all from Harvard University. He is also a Research Associate at the National Bureau of Economic Research.
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John Ricco
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Jon Huntley
Before joining Penn Wharton Budget Model, Jon was part of the Fiscal Studies Unit at the Congressional Budget Office and specialized in building models to analyze the effects of changes in fiscal policy on the economy. Jonâs academic research focuses on household finance and how household savings and consumption decisions are affected by economic frictions. His research on how tax-deferred retirement savings accounts encourage households to spend out of anticipated changes to income such as tax rebates has been published in the American Economic Journal: Macroeconomics. Jon received his Ph.D. in economics from Northwestern University and his B.S. in mathematics and economics from Duke University.
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Jonathan Halket
Jonathan Halket researches the intersection of finance, the built environment, economic inequality, urban spaces and macroeconomics. Before joining PWBM, he was an Assistant Professor of Finance at Texas A&M University and a Lecturer (Assistant Professor) of Economics at the University of Essex. He is a co-founder of the HUD Center of Excellence for Hispanic Housing Studies at Texas A&M and an International Research Fellow at the Institute for Fiscal Studies.
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Jonathan Skinner
Jonathan Skinner is the James O. Freedman Presidential Professor in Economics at Dartmouth College and a professor at the Geisel School of Medicineâs Institute for Health Policy and Clinical Practice. A member of the National Academy of Medicine (formerly the IOM), he is an associate editor of the American Economic Journal: Economic Policy, and a former editor of the Journal of Human Resources. Skinner received his M.A. and Ph.D. in Economics from UCLA, and a B.A. in political science and economics from the University of Rochester. He has also taught at the University of Virginia, the University of Washington, Stanford University, and Harvard University.
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Junghoon Lee
Junghoon is interested in building data-driven software, such as the code for various models that PWBM owns. Such software poses a unique challenge: domain experts usually lack the skills to maintain complex software, and software engineers struggle to understand the domain. He wants to build a team/organization that can design, improve, and maintain such software for an extended period.
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Judd Gregg
Former Chairman of the Senate HELP Committee, Former U.S. Senator (R-NH) Senator Judd Gregg is a national leader on budget and fiscal policy. During his 18 years in the U.S. Senate, Gregg served as both Chairman and the Ranking Member of the Senate Budget Committee. Prior to his tenure in the Senate, Gregg served as Governor of New Hampshire and as a U.S. Representative. In 2012, Gregg was appointed the first Distinguished Fellow at Dartmouth College, where he lectures on national governance and history issues.
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Junlei Chen
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Kent Smetters
Dr. Smetters is the Boettner Professor in the Department of Business Economics and Public Policy at the Wharton School of the University of Pennsylvania, and is serving as the Faculty Director of The Penn Wharton Budget Model.
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Leonard Burman
Len Burman is the Robert C. Pozen Director of the Tax Policy Center, the Paul Volcker Professor and a Professor of Public Administration and International Affairs at the Maxwell School of Syracuse University, and senior research associate at Syracuse Universityâs Center for Policy Research. He co-founded the Tax Policy Center, a joint project of the Urban Institute and the Brookings Institution, in 2002. He was Deputy Assistant Secretary for Tax Analysis at the Treasury from 1998 to 2000 and Senior Analyst at the Congressional Budget Office from 1988 to 1997. He is past-president of the National Tax Association. Burman is the coauthor with Joel Slemrod of Taxes in America: What Everyone Needs to Know and author of The Labyrinth of Capital Gains Tax Policy: A Guide for the Perplexed, and co-editor of several books. He is often invited to testify before Congress and has written for scholarly journals as well as media outlets such as the Washington Post, New York Times, and the Wall Street Journal. He holds a Ph.D. from the University of Minnesota and a B.A. from Wesleyan University.
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Kody Carmody
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Lysle Boller
Lysle Boller is an economist with expertise in international corporate taxation. His research interests lie at the intersection of public economics and industrial organization, with a focus on how firms respond to incentives created by the global tax system. Prior to joining PWBM, Lysle worked as a researcher at the Yale School of Management and as an economic consultant for Compass Lexecon.
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Leonard M. Tannenbaum
Leonard M. Tannenbaum founded Fifth Street in 1998. He is Chairman and Chief Executive Officer of Fifth Street Asset Management Inc., as well as a member of the firm's Management Committee. Mr. Tannenbaum is also Portfolio Manager of the firmâs hedge fund. An expert in the middle market, private credit and direct lending, Mr. Tannenbaum is frequently quoted in major business and trade media, such as the Financial Times, Reuters and The Wall Street Journal. He also appears as a regular guest on major broadcast networks, such as Fox Business News, Bloomberg TV and CNBC. Mr. Tannenbaum has founded a number of private investment firms, including Fifth Street Capital LLC, and he has served as managing member of each firm. Mr. Tannenbaum graduated from the Wharton School of the University of Pennsylvania, where he received a B.S. in Economics. Subsequent to his undergraduate degree from the University of Pennsylvania, Mr. Tannenbaum received an M.B.A. in Finance from the Wharton School as part of the Submatriculation Program. He is also a holder of the Chartered Financial Analyst designation.
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Maddison Erbabian
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Marc Rowan
Marc Rowan is a co-founder and Senior Managing Director of Apollo Global Management, LLC, a leading alternative asset manager focused on contrarian and value oriented investments across private equity, credit-oriented capital markets and real estate. Marc currently serves on the boards of directors of Apollo Global Management, LLC, Athene Holding Ltd., Caesars Entertainment Corp. and Caesars Acquisition Co. He has previously served on the boards of directors of the general partner of AP Alternative Assets, L.P., AMC Entertainment, Inc., Beats Music, CableCom Gmbh., Cannondale Bicycle Corp., Caesars Entertainment Operating Co., Countrywide PLC, Culligan Water Technologies, Inc., Furniture Brands International, Mobile Satellite Ventures, National Cinemedia, Inc., National Financial Partners, Inc., New World Communications, Inc., Norwegian Cruise Lines, Quality Distribution, Inc., Samsonite Corporation, SkyTerra Communications, Inc., Unity Media SCA, Vail Resorts, Inc. and Wyndham International, Inc. Marc is a founding member and Chairman of YRF-Darca, Vice Chair of the Board of Overseers of The Wharton School and a member of the University of Pennsylvaniaâs Board of Trustees. He serves on the boards of directors of Jerusalem Online and the New York City Police Foundation. Marc graduated Summa Cum Laude from the University of Pennsylvaniaâs Wharton School of Business with a BS and an MBA in Finance.
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Marc Spilker
Marc Spilker is a Founding Member of GPS Investment Partners LLC and the Chairman of Chiron Investment Management LLC. From 2010 to 2014 he was President of Apollo Global Management and a member of the firmâs Executive Committee. In 2010, prior to joining Apollo, Mr. Spilker retired from Goldman Sachs following a 20-year career with the firm. At Goldman he served as co-head of the Investment Management Division (IMD) and was also a member of the firmwide Management and Risk Committees. Mr. Spilker previously served on the Investment Advisory Committee at Google and was a member of the American Stock Exchange, the Chicago Mercantile Exchange and the Council of Economic and Fiscal Advisors for Governor Andrew Cuomo. He has served on the boards of the Philadelphia Stock Exchange, the Stone and Bridge Street Funds, BrokerTec and Bondbook, LLC. Mr. Spilker is a board member of the University of Pennsylvaniaâs Wharton Undergraduate Executive Board, iSentium, LLC, The New 42nd Street, Inc., The Samuel Bronfman Department of Medicine Advisory Board at Mount Sinai School of Medicine and the Advisory Board for Mount Sinaiâs Institute for Genomics and Multiscale Biology. Mr. Spilker graduated with a B.S. in Economics from the Wharton School of the University of Pennsylvania.
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Marcos Dinerstein
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Mariko Paulson
As a Senior Application Developer, Mari helps economists and analysts build programs to calculate and visualize results. Her current work focuses mainly on Social Security and past projects have included data interactives. She has worn a variety of hats at PWBM over the years including administrative, communications, and front-end.
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Mauro F. Guillén
Mauro F. GuillĂ©n is the Zandman Professor in International Management at the Wharton School. He combines his training as a sociologist at Yale and as a business economist in his native Spain to methodically identify and quantify the most promising opportunities at the intersection of demographic, economic, and technological developments. His research has earned him many distinctions, including Fulbright, Rockefeller, and Guggenheim fellowships, a membership in the Institute for Advanced Study in Princeton, and prizes from the Academy of Management, the American Sociological Association, the Social Science History Association, and the Gustavus Myers Center for the Study of Bigotry and Human Rights. He is an elected member of the Sociological Research Association and the Macro Organizational Behavior Society. His book on 2030 AD: How Todayâs Biggest Trends Will Collide and Reshape the Future of Everything will be published by St. Martinâs in 2020, with translations into Japanese, Korean, Mandarin, Romanian, Turkish, Portuguese and Spanish.
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Michael Bogdanos
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Mark Duggan
Mark Duggan is The Trione Director of SIEPR and The Wayne and Jodi Cooperman Professor of Economics at Stanford University. He received his B.S. and M.S. degrees in Electrical Engineering at M.I.T. in 1992 and 1994, respectively, and his Ph.D. in Economics from Harvard University in 1999. He is also a Research Associate at the National Bureau of Economic Research and serves on the Editorial Board of the American Economic Journal: Economic Policy. Before arriving to Stanford in the summer of 2014, Duggan served as the Rowan Family Foundation Professor at the University of Pennsylvania's Wharton School and was also the Faculty Director of the Penn Wharton Public Policy Initiative and the Chair of Wharton's Business Economics and Public Policy Department. Professor Duggan's research focuses on the health care sector and also on the effects of government expenditure programs such as Social Security, Medicare, and Medicaid on the behavior of individuals and firms. His research has been published in leading academic journals including the American Economic Review, the Journal of Political Economy, and the Quarterly Journal of Economics and has been featured in many media outlets including the Economist, the New York Times, and the Wall Street Journal. Duggan served from 2009-10 as the Senior Economist for Health Care Policy at the White House Council of Economic Advisers and has testified about his research before the House Ways and Means and Senate Budget Committees.
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Maya MacGuineas
Maya MacGuineas is the President of the Committee for a Responsible Federal Budget as well as the head of the Campaign to Fix the Debt. Her areas of expertise include budget, tax, and economic policy. MacGuineas testifies regularly before Congress and has published broadly. In the spring of 2009 MacGuineas did a stint on The Washington Post editorial board, covering economic and fiscal policy. MacGuineas has worked at the Brookings Institution and on Wall Street. As a political independent, she has advised numerous candidates for office from both parties, and works regularly with members of Congress on health, economic, tax, and budget policy.
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Minh Quach
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Michelle Wan
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Minji Bang
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National Science Foundation
The National Science Foundation (NSF) is an independent federal agency created by Congress in 1950 "to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense..." NSF is vital because they support basic research and people to create knowledge that transforms the future. This type of support:
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Olivia S. Mitchell
Olivia S. Mitchell is the International Foundation of Employee Benefit Plans Professor and Professor of Insurance/Risk Management and Business Economics/Policy; Executive Director of the Pension Research Council; and Director of the Boettner Center on Pensions and Retirement Research; at the Wharton School of the University of Pennsylvania. Concurrently Dr. Mitchell serves as NBER Research Associate; Independent Director on the Wells Fargo Advantage Fund Trusts Board; Co-Investigator for the Health and Retirement Study at the University of Michigan; Member of the Executive Board for the Michigan Retirement Research Center; and Senior Scholar of the Centre for Silver Security at the Sim Ki Boon Institute of Singapore Management University. She has published over 200 books and articles, and she works regularly in Latin America, Europe, and Australasia, as well as the US. She received the MA and PhD degrees in Economics from the University of Wisconsin-Madison, and the BA in Economics from Harvard University.
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Patrick Murphy
The Honorable Patrick J. Murphy is a Nonresidential Fellow at the Penn Wharton Budget Model Office. An entrepreneur who leads the geopolitical unit at Hilco Global, he is an historic enterprise-level leader. While serving as acting Secretary of the Army and Americaâs first Iraq War Veteran elected to the US Congress, he served on the Appropriations Committee and authored bipartisan legislation into law that cut fraud, waste and abuse in Congress via the Improve Act and Improper Payments Act thatâs saved tens of billions of taxpayer dollars. In the Pentagon, Secretary Murphy expanded the Soldier for Life initiative, generating over $250 million in public-private partnerships while bringing in over 120K Gen Z troops into the Army. To better connect the Pentagon to 19+ million American veterans, he opened online sales to drive revenue beyond the 2,500 Army & Air Force Exchange Service retail stores, increasing annual sales to over $6.7 billion. The Army is a Fortune 2-sized organization with over 1.3 million members and an annual budget of over $185 billion. He has been the distinguished chair of innovation at the United States Military Academy at West Point, visiting fellow at the University of Chicago, and lectures at the US Army War College.
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Peter R. Orszag
Peter R. Orszag is Vice Chairman of Corporate and Investment Banking and Chairman of the Financial Strategy and Solutions Group at Citigroup, Inc. He is also a Nonresident Senior Fellow in Economic Studies at the Brookings Institution and a Contributing Columnist at Bloomberg View. He previously served as the Director of the Office of Management and Budget in the Obama Administration, a CabinetÂlevel position, from January 2009 until July 2010. From January 2007 to December 2008, Dr. Orszag was the Director of the Congressional Budget Office (CBO). Under his leadership, the agency significantly expanded its focus on areas such as health care and climate change. Prior to CBO, Dr. Orszag was the Joseph A. Pechman Senior Fellow and Deputy Director of Economic Studies at the Brookings Institution During the Clinton Administration, he was a Special Assistant to the President for Economic Policy and before that a staff economist and then Senior Advisor and Senior Economist at the President's Council of Economic Advisers. Dr. Orszag graduated summa cum laude in economics from Princeton University and obtained a Ph.D. in economics from the London School of Economics, which he attended as a Marshall Scholar.
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PWBM
PWBM produces nonpartisan analysis of the fiscal and economic impact of public policy.
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Richard Prisinzano
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Robert P. Inman
Robert P. Inman is the Richard King Mellon Professor of Finance and Economics at the Wharton School of the University of Pennsylvania. He earned his PhD, MEd and AB from Harvard University. In addition to his appointment as a Professor at the Wharton School, he currently serves as a Research Associate of the National Bureau of Economic Research, Cambridge, MA. He is an Associate Editor of the professional journal Regional Science and Urban Economics. He is the editor of three books, The Economics of Public Services (Macmillan Publishing), Managing the Service Economy (Cambridge University Press), and Making Cities Work: Prospects and Policies for Urban America (Princeton University Press). His research focuses on the design and impact of fiscal policies with an emphasis on fiscal federalism.
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S.A. Ibrahim
S.A. Ibrahim is chief executive officer of Radian Group Inc. (NYSE: RDN). Headquartered in Philadelphia, Radian provides private mortgage insurance and products and services to the mortgage and real estate industries. Radian is one of the largest private mortgage insurers of U.S. residential mortgages, and its mortgage and real estate services segment is a leader in each of its industries. Prior to joining Radian, Mr. Ibrahim was the CEO of GreenPoint Mortgage Funding based in Novato, California. Under his leadership, GreenPoint Mortgage transformed itself from a small mortgage originator to one of the leading U.S. mortgage originators. Mr. Ibrahim's experience also includes heading international reengineering for American Express, being the CEO of Chemical Mortgage as well as working at Bank of America and General Electric Company. He was an advisor to the White House team on President Obama's 2009 Cairo speech and was a keynote speaker at the Presidential Entrepreneurial Summit in Washington in April 2010. Mr. Ibrahim holds an MBA in Finance from The Wharton School of The University of Pennsylvania and a BE in Engineering from Osmania University in India.
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Sarah Kim
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Seul Ki (Sophie) Shin
Sophie Shin is a Senior Economist at the Penn Wharton Budget Model, where she leads analysis of Social Security policy and long-term program finances. She joined PWBM in 2015 after earning her Ph.D. in Economics from the University of Pennsylvania.
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Simon Palenchar
Simon works on the infrastructure and application systems that support PWBM's research and modeling workflows. His current responsibilities focus on DevOps and platform engineering, including maintaining compute environments, automating workflows, supporting cloud and HPC systems, and helping teams deploy and operate applications reliably.
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Steve Ballmer
Steve Ballmer is co-founder of Ballmer Group and chairman of the Los Angeles Clippers NBA basketball team. Ballmer retired as Chief Executive Officer of Microsoft in 2014 after leading the company for nearly 14 years. He remains a significant investor.
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Susan Guthrie
Prior to joining PWBM Susan held leadership roles in the management consulting, tech, and non-profit sectors. She received her PhD in Economics from Harvard University and her BA from the University of California at San Diego.
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Vidisha Chowdhury
Vidisha specializes in the intersection of machine learning, economic modeling, and public policy. At PWBM, she focuses on the demographic components of the organization's microsimulation framework, with specific expertise in immigration policy and natality forecasting. Her recent research examines the implications of AI adoption for work and the economic impacts of U.S. visa policy changes.
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Wanling Luo
Wanling (Lorraine) Luo is a Data Analyst at the PWBM. Her work focuses on business taxation, tariff modeling, and international tax, with an emphasis on translating fast-moving policy changes into scalable simulation tools and transparent, reusable analytical workflows.
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William G. Gale
William Gale is the Arjay and Frances Miller Chair in Federal Economic Policy in the Economic Studies Program at the Brookings Institution. His research focuses on tax policy, fiscal policy, pensions and saving behavior. He is co-director of the Tax Policy Center, a joint venture of the Brookings Institution and the Urban Institute. He is also director of the Retirement Security Project. From 2006 to 2009, he served as Vice President of Brookings and Director of the Economic Studies Program. Prior to joining Brookings in 1992, he was an assistant professor in the Department of Economics at the University of California, Los Angeles, and a senior economist for the Council of Economic Advisers under President George H.W. Bush. He has also written extensively in policy-related publications and newspapers, including op-eds in CNN, the Financial Times, Los Angeles Times, New York Times, Wall Street Journal, and Washington Post. Gale attended Duke University and the London School of Economics and received his Ph.D. from Stanford University in 1987.
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Victoria Osorio
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Xiaoyue Sun
At PWBM, Xiaoyue Sun works on corporate tax modeling and business investment analysis. Her work includes developing core components of PWBM's corporate tax simulator, including models of depreciation, amortization, and net operating losses, as well as constructing firm- and asset-level investment profiles using IRS Statistics of Income, BEA fixed asset data, and financial statements.
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Youran Wu
Youran joins Penn Wharton Budget Model as a recent graduate from Columbia University with a masterâs degree in Economics. She has a sound theoretical grounding and practical experience in the fields of development economics and public finance. Her research interest includes macroeconomics research and policy analysis, with a focus on development and labor.
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Yunye Jiang
Yunye Jiang is a Senior Application Developer with a background in quantitative finance. Prior to joining Penn Wharton Budget Model, He worked as a quantitative analyst in private equity. His work there consisted of collecting data, establishing databases and building models to determine effective trading strategies, as well as conducting operable judgment. Yunye earned his M.A.in Applied Mathematics and Computational Science from the University of Pennsylvania. His academic research focuses on the predictability of futures prices and the cause-effect relationship between stock and forex markets.
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Yueyao Zhang
Yueyao works on the core software and data infrastructure behind large-scale policy simulation, with a focus on the tax simulator, Social Security modeling, and the OLG Interfaces model.
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Zheli He
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