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Members: Physician-Focused Payment Model Technical Advisory Committee

As prescribed by MACRA, PTAC’s 11 members are individuals with national recognition for their expertise in PFPMs and related delivery of care. PTAC’s members include both physicians and non-physicians.

PTAC members are appointed by the Comptroller General of the United States and generally serve three-year terms. The U.S. Government Accountability Office (GAO) occasionally posts requests for nominations in the Federal Register. For more information, review the GAO’s Health Care Advisory Committees page. Join the PTAC Listserv for alerts related to nominations.


Lauran Hardin, MSN, FAAN
National Health Care & Housing Advisors, LLC

Angelo Sinopoli, MD


Jay S. Feldstein, DO
Philadelphia College of Osteopathic Medicine
Joshua M. Liao, MD, MSc
University of Washington School of Medicine
Walter Lin, MD, MBA
Generation Clinical Partners
Jennifer L. Wiler, MD, MBA
UCHealth and University of Colorado School of Medicine

Brief biographies of the appointees:

Lauran Hardin, MSN, FAAN, Co-Chair
Vice President & Senior Advisor for the National Healthcare & Housing Advisors, LLC, is a nationally recognized leader, highly skilled at partnering with communities, health systems and payers to co-design models and interventions for complex populations. Ms. Hardin was Senior Advisor for the inaugural team that developed the Camden Coalition’s National Center for Complex Health and Social Needs. Her past work includes developing an award-winning Complex Care model that creates better patient navigation, decreased hospitalizations and costs for vulnerable populations. Aspects of the care model were implemented in more than twenty Trinity Health sites in both rural and urban communities across six states. The model was recognized as an exemplary practice in the National Academy of Medicine Future of Nursing Report 2020-2030. Recent projects include co-designing a cross-sector community-based equity ecosystem model called Project Restoration, working with the State of Vermont to develop state-wide interprofessional community-based complex care teams, and co-designing a model for uninsured patients in Memphis. Ms. Hardin was named AARP Culture of Health Scholar in January of 2017, earned "Edge Runner" recognition from the American Academy of Nursing, was named Distinguished Fellow of the National Academies of Practice in 2018 and Fellow in the American Academy of Nursing in 2019. She was recently appointed as the first nurse representative and co-chair of the U.S. Government Accountability Office’s Physician-Focused Payment Model Technical Advisory Committee (PTAC). Ms. Hardin earned her Master’s degree in nursing from the University of Detroit Mercy, with certifications as a Clinical Nurse Leader, Pain Management, and Hospice.

Appointed for a 3-year term that expires in 2023

Angelo Sinopoli, MD, Co-Chair
Chief Network Officer for UpStream and a physician executive with over 30 years of experience developing and driving a clinically integrated healthcare system; created successful programs and executed strategy across population health, care model development, health policy, alternative payment models, contracting strategy and the transition to value-based care. Dr. Sinopoli has recently served as Chief Executive Officer of Buji, LLC and as Executive Vice President and Chief Clinical Officer for Prisma Health, the largest not-for-profit integrated healthcare system in South Carolina, with over 4,700 employed and independent providers serving more than 1.2 million patients annually; and President, Founder, and Chief Executive Officer of the Care Coordination Institute (CCI), a clinical integration, data and analytics, and population health enablement company working with clinically integrated networks (CINs), accountable care organizations (ACOs), provider groups, and employers on their value-based journey. Dr. Sinopoli serves on numerous committees and advisory groups focused on healthcare delivery and transformation, including the Guiding Committee for the CMS Health Care Payment Learning and Action Network (LAN) and University of South Carolina Board of Trustees, Health and Medical Affairs Committee. Dr. Sinopoli earned a Bachelor’s degree in Biology from the University of South Carolina and a MD from the Medical University of South Carolina. He holds professorship positions at the University of South Carolina (USC) School of Medicine Greenville and the USC Arnold School of Public Health.

Appointed for a 3-year term that expires in October 2021
Reappointed for a 3-year term that expires in October 2024

Lindsay K. Botsford, MD, MBA
Market Medical Director with One Medical, a national primary care organization. In her role, she leads One Medical’s Iora offices in Texas, which are designed to care for older adults on Medicare. She serves on the governing body for Iora Health Network, as well as in a clinical faculty role at the Tilman J. Fertitta Family College of Medicine at the University of Houston. Dr. Botsford serves on several national and statewide professional committees, including as co-chair of the Primary Care and Chronic Illness Standing Committee through the National Quality Forum. Previously, she served as a Medical Director for Memorial Hermann Medical Group and teaching faculty with the Memorial Family Medicine Residency Program in Houston, Texas. A board-certified Family Medicine physician, Dr. Botsford received her medical degree from Baylor College of Medicine and her MBA from the University of Houston, Bauer College of Business.

Appointed for a 3-year term that expires in 2025

Jay S. Feldstein, DO
President and Chief Executive Officer of the Philadelphia College of Osteopathic Medicine where, in conjunction with the Board of Trustees, he supervises and controls the institution’s business and affairs. Previously, Dr. Feldstein was the President of the Northern Division of Pennsylvania Managed Care Plans for the AmeriHealth Caritas Family of Companies. In that role, he was responsible for network management, patient management, quality, marketing, and related activities for health plans covering 700,000 at-risk members. Dr. Feldstein earned his bachelor’s degree from Penn State University and his doctor of osteopathic medicine from the Philadelphia College of Osteopathic Medicine. He completed his residency in emergency medicine at the Medical Center of Delaware and his internship at John F. Kennedy Memorial Hospital in Stratford, NJ. He is a fellow of the American College of Preventive Medicine.

Appointed for a 3-year term that expires in 2023

Lawrence R. Kosinski, MD, MBA
Founder and Chief Medical Officer of SonarMD, Inc., a value-based care coordination solution for complex chronic diseases. SonarMD was initiated as Project Sonar, one of the first proposed models that was reviewed by the Physician-Focused Payment Model Technical Advisory Committee (PTAC). Dr. Kosinski also serves on the Quality Leadership Council of the American Gastroenterological Association, where he was previously on the governing board. He has published extensively on value-based care and hosts a monthly podcast, the "Scope with Dr. K," focused on achieving the quadruple goal of bringing patients, providers, plans, and payers together. Previously, Dr. Kosinski was a Founder and Managing Partner of the Illinois Gastroenterology Group, the largest private gastroenterology group in Illinois. A board-certified gastroenterologist who practiced for 35 years in suburban Chicago, Dr. Kosinski received his medical degree and fellowship training from Loyola University Stritch School of Medicine and his MBA from Northwestern University’s Kellogg School of Management.

Appointed for a 3-year term that expires in 2024

Joshua M. Liao, MD, MSc
Associate Professor of Medicine and Director of the Value and Systems Science Lab in the University of Washington School of Medicine, where much of his work focuses on analyzing and evaluating Medicare alternative payment models. He also helps guide value-based payment and delivery strategy at UW Medicine, the University of Washington health system, as the Medical Director of Payment Strategy. He is a member of both the American Medical Association’s RUC Advisory Committee and the American College of Physicians’ Medical Practice and Quality Committee. Dr. Liao received his medical degree from Baylor College of Medicine in Houston, TX, and completed his residency in internal medicine at Brigham and Women’s Hospital in Boston, MA, where he was also a Clinical Fellow in Medicine at Harvard Medical School. He obtained his health policy research training at the University of Pennsylvania, where he is an Adjunct Senior Fellow at the Leonard Davis Institute of Health Economics.

Appointed for a 3-year term that expires in 2023

Walter Lin, MD, MBA
Founder and Chief Executive Officer of Generation Clinical Partners, a medical practice focused on caring for frail Medicare beneficiaries in senior living communities. He also serves Medicare beneficiaries as the Medical Director for American Health Advantage of Missouri, an institutional special needs plan; Associate Medical Director for Prospero Health, a company providing home-based medical care for the seriously ill; and Medical Director of various skilled nursing and assisted living facilities. Dr. Lin is an active member of The Society for Post-Acute and Long-Term Care Medicine (AMDA), serving on its Public Policy Committee, representing AMDA on the CMS Unified Post-Acute Care Payment System Technical Expert Panel, and serving on the board of the Missouri Association of Long-Term Care Practitioners. Prior positions include working as a healthcare venture capitalist and directing performance improvement initiatives for a large multi-state hospital system. Dr. Lin trained in internal medicine at Yale and earned his Doctor of Medicine from the University of California, San Francisco; Masters of Health and Medical Sciences from the University of California, Berkeley; Masters of Business Administration from the University of Pennsylvania's Wharton School; and Bachelor of Arts and Sciences from Stanford University.

Appointed for a 2-year term that expires in 2023

Terry L. Mills Jr., MD, MMM
Senior Vice President and Chief Medical Officer of CommunityCare, a provider-owned regional health plan and integrated network serving eastern Oklahoma. In that role, Dr. Mills provides executive and strategic leadership of all clinical related aspects of CommunityCare plans. Previously, Dr. Mills served as Administrative Medical Director of Ascension Medical Group in Tulsa, OK, and Ascension Via Christi in Wichita, KS, where he was responsible for developing and leading population health management, quality improvement, and primary care operations among other responsibilities. Dr. Mills participated in the American Medical Association’s Resource-based Relative Value Scale Update Committee process for 12 years, and has served in numerous leadership roles related to quality, practice enhancement, and payment policy within the American Academy of Family Physicians. Colonel Mills retired from the US Army Reserves in 2020 after a 23-year career including five deployments. He received his medical degree from the University of Oklahoma College of Medicine and his Masters in Medical Management from Carnegie Mellon University. He completed his residency in Family Medicine in Waco, TX, and is additionally Board certified in Clinical Informatics and Hospice and Palliative Care.

Appointed for a 3-year term that expires in October 2023

Soujanya R. Pulluru, MD
Vice President, Clinical Operations Walmart Health Omnichannel Care at Walmart, where she provides strategic leadership, and has responsibility for clinical operations across Primary Care, Dental, Behavioral Health and SDOH. She also leads Value Based Care transformation as well as leading omnichannel care delivery implementation. She has also overseen the organization’s COVID-19 response and Patient Safety Organization. In addition, Dr. Pulluru serves on the Board of Advisors for Stellar Health, a healthcare technology company focused on quality and efficiency for providers and insurers. Previously, she served as Executive Medical Director of DuPage Medical Group and its subsidiary MSO where she managed the VBC business line, regulatory and enterprise risk for physician services and the Pharmoeconomic division. She led the implementation of data analytics that provided insights to produce leading year-over-year quality and care outcomes across multiple APM contracts. She has also served as Board member and Officer of the Illinois Academy of Family Physicians. Dr. Pulluru has been a leader in her county’s Board of Health and Dupage Health Coalition, an organization dedicated to providing access to the uninsured. Board-certified in Family Medicine, Dr. Pulluru received her Medical Degree from MR Medical College in Gulbarga, India and has done her post graduate training at Hinsdale Family Medicine Residency in Illinois.

Appointed for a 3-year term that expires in October 2024

James Walton, DO, MBA
President of JWalton, LLC, a healthcare consultancy firm with expertise in physician-owned value networks, accountable care organizations, and safety net care delivery focused on sustainability in patient-centered healthcare financing and delivery redesign. Prior positions include President and CEO of Dallas-based Genesis Physicians Group, comprised of more than 1,650 physician members representing more than 50 specialties. He also served as CEO of Genesis’ joint-venture Accountable Care Organization, Genovista Health, a physician-led, clinically integrated network engaged in population health management and value-based contracting with Medicare, Medicaid, and commercial populations in North Texas. Prior to joining Genesis, Dr. Walton held a number of executive leadership roles within Baylor Health Care System from 1996–2013, including Chief Health Equity Officer, VP/Medical Director of Baylor Community Care, and VP Network Performance for Baylor’s ACO, Baylor Quality Alliance. Dr. Walton is a 1982 graduate of the University of North Texas Health Sciences Center, Texas College of Osteopathic Medicine. He completed his Internal Medicine residency at Methodist Hospitals of Dallas and is Board Certified in Internal Medicine. Dr. Walton earned an MBA from the University of Michigan in 2009 and joined the adjunct faculty at the University of Texas at Dallas, Naveen Jindal School of Business in 2016.

Appointed for a 3-year term that expires in 2025

Jennifer L. Wiler, MD, MBA
Chief Quality Officer UCHealth Denver Metro, Co-Founder of the UCHealth CARE Innovation Center, and Professor at the University of Colorado School of Medicine. She is nationally recognized as an expert in quality and safety, healthcare operations, and payment policy, and was named by Becker’s Healthcare a "Top 26 Patient Safety Expert to Know". Dr. Wiler has authored over 60 peer-reviewed papers and is senior editor of the book "Value and Quality Innovations in Acute and Emergency Care" (Cambridge Press, 2017). She has served in numerous state and national leadership positions including Chair of the American Medical Association Women Physicians Congress, which represents all women physicians, and served as the representative for the American College of Emergency Physicians to the AMA RBRVS Updates Committee (RUC), an expert advisory panel to the Centers for Medicare and Medicaid Services (CMS), for nearly a decade. Dr. Wiler has won numerous national awards and was previously named "Emergency Physician of the Year", a "Nation's Top Emergency Physicians 45 Under 45" and an American Medical Association "Inspirational Physician".

Appointed for a 3-year term that expires in October 2021
Reappointed for a 3-year term that expires in October 2024