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40 Years of Experience

Modeled after the Congressional Research Service (CRS) of the Library of Congress, HPA offers confidential, nonpartisan expert analysis and advice.

Our Services

HPA supports our clients’ advocacy efforts including analysis of policy and payment proposals, written summaries of federal regulations, and development of draft legislation.

Where to Find Us 

400 North Capitol Street NW, Suite 799
Washington, DC 20001

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HPA Principals

Our principals have a long and varied history working for the Centers for Medicare and Medicaid Services at the Department of Health and Human Services; the U.S. Congress; and the agencies that support the U.S. Congress - the Congressional Budget Office, the Congressional Research Service, the Government Accountability Office, and  the Medicare Payment Advisory Commission.

Lisa A. Potetz came to HPA in 2006 with more than 25 years of health policy experience in both the public and private sectors. Immediately before joining the firm, she spent eight years at the March of Dimes developing and managing a public policy research program focused on health insurance coverage and other issues of importance to women of childbearing age and children. She also authored a number of reports on Medicare trends and reform proposals as an independent consultant. She previously spent two years on the policy staff of the American Hospital Association, examining the impact of federal budget proposals on hospitals. Her government experience includes service as a professional staff member to both the Senate Committee on Finance and the Subcommittee on Health of the House Committee on Ways and Means, developing legislation involving Medicare payment to hospitals and other providers, health insurance, and health care reform. Prior to her time on Capitol Hill, Lisa was an analyst at the Prospective Payment Assessment Commission. She began her career at the Congressional Budget Office, providing analytic support to Congress during consideration of the original Medicare inpatient hospital prospective payment legislation. She earned a B.A. from Boston College and a Masters in Public Policy from the University of Michigan. lp.hpa@sso.org

Pierre Poisson, J.D. joined HPA in 2008 after more than 13 years providing legal and legislative drafting services with respect to U.S. health entitlement laws and other areas of federal law. In 2005, Pierre formed his own company providing policy analysis, procedural counsel, and drafting services for clients seeking assistance in developing legislation involving Medicare and Medicaid payments to providers and suppliers as well as for clients seeking improvements in health care services and other benefits under law for service members and veterans of the U.S. Armed Forces. Until 2005, he served as assistant counsel in the Office of the Legislative Counsel, U.S. House of Representatives, where for ten years he provided policy analysis and drafted legislation in the areas of Medicare, Medicaid, veterans’ benefits, and the U.S. intelligence community. He previously served as a judicial clerk for a U.S. Tax Court judge. He earned a law degree from the Dickinson School of Law and his B.A. from Middlebury College. pp.hpa@sso.org

Marjorie Kanof, M.D. joined HPA in 2011 after 14 years in the federal government. Immediately prior to joining the firm, she was the managing director for Health Care at the Government Accountability Office (GAO). In that role, she was responsible to Congress for testimonies and reports covering the complete range of health care issues. She also provided leadership for implementation of portions of health care legislation. Before moving to the GAO in 2001, Marjorie worked at the Centers for Medicare and Medicaid Services (CMS) and held a variety of positions including deputy director for Medicare Payment Policies and deputy director for Medicare Contractors. In these positions, she provided leadership for development and implementation of Medicare payment policies and related program integrity issues. Before entering government service, Marjorie was a medical director at Blue Cross Blue Shield of Massachusetts. In that role, she was responsible for developing local medical review policies for several Medicare products and was involved in national committees focused on physician payment. Marjorie's medical background includes both academic and clinical components. She was NIH-funded in the field of immunology. She held a faculty position at the Harvard Medical School and was faculty in pediatric gastroenterology at the Massachusetts General Hospital. She trained in pediatrics and pediatric gastroenterology at the Johns Hopkins Hospital. Marjorie earned a Masters in Public Health with a concentration in health care management from the Harvard School of Public Health. She earned her M.D. from the University of Kansas. mk.hpa@sso.org

Thomas Walke, Ph.D. joined HPA in 2013 after 10 years of federal government experience. Prior to joining the firm, he was an assistant director for Health Care at the United States Government Accountability Office (GAO). In this role, he was responsible for assisting the Congress in developing reports and testimonies on a wide range of health care topics including Medicare payment and financing issues, Medicare program integrity, and the Department of Veterans Affairs and Department of Defense health care systems. Thomas also has served as deputy director for the Center for Sustainable Health Spending at Altarum Institute. In this role, he led research projects involving the macroeconomics of health spending, workforce, prices, and long-term fiscal sustainability. He also served as practice area leader of Forecasting and Economic Analyses at Altarum, conducting and supporting economic analyses for government and private sector clients, including analyses of new diagnostic technologies, among other responsibilities. His background includes health economics, program evaluation, and other quantitative and qualitative methods. He earned a Master of Science in Public Health and a Ph.D. in Health Policy and Administration from the University of North Carolina School of Public Health. tw.hpa@sso.org

Jean Hearne joined HPA in 2014 after over 20 years as a policy advisor to the U.S. Congress, most recently at the Congressional Budget Office (CBO).  While at CBO, Jean held management and staff positions, most recently the chief of the Low-Income Health Programs and Prescription Drugs cost estimating unit. In that role, she led a team of analysts specializing in analyzing legislation affecting Medicaid, the Children’s Health Insurance Program (CHIP) and health programs established under the Affordable Care Act (ACA), among others. Before that, she was part of the leadership team providing cost estimates and analysis during congressional deliberations on the Affordable Care Act (ACA).  In between two separate tours at CBO, Jean spent about a decade at the Congressional Research Service as a senior specialist working on Medicaid financing and private health insurance market issues. She has supported Congress’ work on health legislation since the late eighties including the ACA, legislation establishing the CHIP program, the Clinton Health Security Act as well as a number of budget reconciliation bills. She is the author of many reports for Congress on Medicaid and health insurance subjects. Jean has a master’s degree in public health from San Diego State University and a bachelor’s degree from the University of Rochester. jh.hpa@sso.org

Karen R. Borman, M.D., FACS, joined HPA in 2016 after over 25 years as an academic surgeon, having held positions including professor and vice-chair.  Her clinical focus area was endocrine surgery and her research areas included surgical education and physician reimbursement.  Karen served on the AMA CPT Editorial Panel, including five years as vice-chair;  the RUC Practice Expense Advisory Committee;  and the AMA Diagnostic and Therapeutic Technology Assessment Panel.  She also served on the Carrier Medical Advisory Committees for North Texas and Mississippi as well as the CMS Hospital Outpatient Payment Advisory Panel.  From 2006 through 2012, Karen served as a MedPAC commissioner.  Karen completed her residency at the University of Texas Southwestern Medical Center in Dallas, her M.D. at Tulane University, and her B.S. in Chemistry at the Georgia Institute of Technology.  She is a former director and executive committee member of the American Board of Surgery. kb.hpa@sso.org

Marc Hartstein came to HPA after 26 years with the Centers for Medicare and Medicaid Services (CMS).  Marc held several management and staff positions during his time at CMS, most recently as the director of the Hospital and Ambulatory Policy Group.  At CMS, Marc was central to the development of the Medicare Severity DRGs, the 2 midnight rule, Medicare policy for off-campus hospital outpatient departments, the misvalued code initiative, and regulations to implement Medicare’s new clinical laboratory fee schedule among other policies. Marc’s experience not only gives him detailed knowledge of the workings of the executive branch of government, he also has worked extensively with the legislative branch. He has assisted in the drafting of legislation, working with the Congressional Committees that have subject matter jurisdiction over Medicare.  Marc has a master’s degree in public policy from the University of Minnesota’s Hubert H. Humphrey Institute of Public Affairs and a bachelor’s degree in political science and economics from the University of Vermont. mh.hpa@sso.org