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Gregory M. Fliszar Ph.D.*


Dr. Gregory Fliszar is a seasoned legal advisor focusing on the intricate realm of health law regulatory issues, with a sharp focus on provider/payer payment disputes within the health care sector, including those involving commercial and Medicare Advantage payers, Medicare and Medicaid, and matters regarding HIPAA and data privacy.

Professional Biography

As a shareholder in Baker Donelson's Nashville office and a member of the Health Law Group, Greg brings over two decades of extensive experience representing a diverse array of health care entities. His clientele spans hospitals and health systems, mental/behavioral health providers, senior living providers, and home health and hospice organizations, among others.

Greg's experience shines particularly in deftly handling reimbursement-related disputes between health care providers and payers, including Medicare Advantage and other managed care organizations and government payers, with an emphasis on Medicare. He also counsels health care organizations in compliance with HIPAA and other data privacy laws and regulations. Additionally, Greg provides advice on compliance with the Medicare Secondary Payer Act.

In the realm of privacy and compliance, Greg is known for his adeptness in crafting robust HIPAA and other compliance programs and providing compliance advice tailored to the unique needs of providers, HIPAA business associates, and liability insurers alike. Further, he offers invaluable counsel on breach analysis and response strategies and requisite reporting protocols, safeguarding his clients against potential legal pitfalls.

Before joining Baker Donelson, Greg held esteemed positions, including vice chair of the Health Care and Life Sciences Group at a prominent international law firm and Associate General Counsel at Universal Health Services. His multifaceted background as a clinical psychologist working in various inpatient and outpatient settings, and as a clinical instructor of psychiatry at the MCP-Hahnemann School of Medicine in Philadelphia, imbues his legal practice with a profound understanding of the health care landscape from both clinical and legal perspectives.

  • Serves as outside general counsel to a behavioral health provider.

  • Served as outside HIPAA/privacy counsel for a multi-state senior living company.

  • Member – American Bar Association
    • Vice chair, Health Law Policy and Coordinating Committee, Health Law Section
    • Former vice chair, Nursing and Allied Health Professions Task Force, Health Law Section
    • Former chair, Substance Abuse and Mental Health Disorders Interest Group, Health Law Section
    • Former co-chair, National Joint Opioid Task Force
  • Member – American Health Lawyers Association
  • Member – Pennsylvania Bar Association
  • Member – Philadelphia Bar Association
  • Selected to Rising Stars by Pennsylvania Super Lawyers in Health Care (2005, 2006, 2010, 2011)
  • "Medicaid Managed Care," Chapter in Thomson Reuters Health Law Handbook, 2018 Edition (June 2018)
  • "Understanding 340B," webinar with BESLER (April 2024)
  • "Reimbursement Disputes: Hot Topics and Best Practices" (December 2023)
  • "The Long and Winding Road – The Saga of the Unlawful 340B Drug Underpayments," BESLER – The Hospital Finance Podcast (May 2023)
  • "Hot Reimbursement Issues: How to Get Paid for the Services You Have Provided," Pennsylvania Bar Institute's Health Law Institute (March 2023)
  • "Errors in Clinical Practice: Disciplinary Action or Criminal Prosecution?," ABA Physicians Legal Issues: Healthcare Delivery & Innovation Conference (September 2022)
  • "A Look Inside a DEA Investigation and Prosecution of Opioid Prescribing and the Controlled Substances Act: The Opioid Odyssey and the Aftermath of Bad Decisions," ABA webinar (May 2022)
  • "Hot Reimbursement Issues from the Perspective of Providers and Health Plans," Pennsylvania Bar Institute's Health Law Institute (March 2022)
  • "Cyber Ethics: The Crossroads of Cybersecurity and Ethics," Pennsylvania Bar Institute's A Day on Health Law Health Webinar (October 2020)
  • "Pandemic Musings on the Courts, Insurance, and Health Law: How the Legal, Health, and Insurance Communities in France, Italy, and the US are Coping," International Association of Lawyers (May 2020)
  • "Cybersecurity and Healthcare – HIPAA Obligations and Concerns for Covered Entities and Business Associates," International Association of Lawyers Seminar (June 2019)
  • "Medicaid Managed Care: Past, Present, and Future," Pennsylvania Bar Institute's 25th Annual Health Law Institute (March 2019)
  • "Updates to the Provider Reimbursement Review Board Rules," BESLER Podcast (November 2018)
  • "Sustaining HIPAA Compliance in an Evolving Analytical Environment," Q1 Life Science Data Privacy and GDPR Alignment (July 2018)
  • "Crisis in Our Emergency Departments: Providing Better Health Care to Mental Health Patients," ABA Health Law Section's Emerging issues in Healthcare (February 2018)
  • "Cybersecurity," ABA Health Law Year in Review Regional CLE (February 2017)


  • University of Pittsburgh School of Law, J.D., 2001, summa cum laude
    • Class valedictorian
    • Order of the Coif
    • Research editor – University of Pittsburgh Law Review
  • Texas Tech University, Ph.D. in Clinical Psychology, 1994
  • Texas Tech University, M.A. in Clinical Psychology, 1991
  • University of Notre Dame, B.A. in Psychology, 1988


  • Pennsylvania
  • U.S. Court of Appeals for the Third and Ninth Circuits
  • U.S. District Court for the Eastern District of Pennsylvania



Baker Donelson professional admitted to the practice of law in Pennsylvania; Tennessee bar application pending.

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