Ari J. Markenson

Ari Markenson

Ari Markenson practices at the intersection of healthcare, law, and business. Ari advises healthcare industry clients, including investors, lenders, providers, and suppliers, on a broad range of regulatory and corporate matters, and has significant experience in complex healthcare industry acquisitions and financial transactions. He regularly represents private equity firms and lenders in such transactions and evaluates and advises on compliance and regulatory issues with regard to sellers and potential borrowers from banks and financing sources. He also advises various healthcare entities on regulatory matters, including conditions for participation; fraud and abuse; and survey, certification, licensure, and enforcement issues.

Ari advises clients on Medicare and Medicaid conditions for participation, obtaining certificate of need approval, and state licensure. He has significant experience representing numerous providers in response to and appeals of audits and investigations by regulatory enforcement authorities regarding compliance with reimbursement rules and regulations under government healthcare programs.

Ari frequently writes for industry publications and speaks at industry and professional events. He also teaches healthcare law, public health law, healthcare lawyering skills, and other healthcare management and policy topics at the Columbia University Mailman School of Public Health, the Pace University College of Health Professions Department of Health Science, and the Elisabeth Haub School of Law at Pace University.


Representative Matters

  • Represented a healthcare consulting firm in its multi-million-dollar sale to a middle-market healthcare-focused private equity fund. The transaction involved cash, rollover equity, and contingent consideration for the seller
  • Represented a private equity fund in an investment in a senior housing development business
  • Represented a private equity fund as New York local counsel in the acquisition of a home health services business
  • Represented a private equity-backed home healthcare company in an add-on acquisition of a personal care services provider
  • Represented a Staten Island group practice with 13 physicians in its acquisition by a large integrated healthcare system
  • Provided healthcare regulatory counsel to a private equity firm on its sale of a large regional hospice provider for approximately $230 million
  • Provided healthcare regulatory counsel to a private equity firm on its acquisition of a large national provider of specialized wheelchairs for approximately $110 million
  • Provided healthcare regulatory counsel to a private equity firm on its acquisition of a large regional home health and hospice company for approximately $185 million
  • Provided healthcare regulatory counsel to a private equity firm on its acquisition of a large national home care and hospice chain and then on its subsequent large and small tuck-in acquisitions for approximately $100 million and $215 million, respectively
  • Provided healthcare regulatory counsel to the seller of a diagnostic testing, health screening, and employee wellness services company sold to a publicly traded strategic investor
  • Represented a healthcare system in its merger with a community hospital
  • Assisted owner in the sale of a skilled nursing facility for a purchase price of over $21 million
  • Assisted purchaser in the sale of a skilled nursing facility for a purchase price of over $23 million
  • Represented a self-administered real estate investment trust serving the healthcare industry in the U.S. in its approximately $1.7 billion acquisition of certain assisted living and skilled nursing properties
  • Assisted a nursing facility in the development of a plan of correction for multiple citations, including immediate jeopardy and substandard care




  • M.P.H. Columbia University, Mailman School of Public Health 1998
  • J.D. Brooklyn Law School 1996
  • B.A. English and Textual Studies Syracuse University 1993

Bar Admissions

  • District of Columbia
  • New York

Professional Memberships and Activities

  • Member, Association for Corporate Growth NY
    • Past member, Westchester/Hudson Valley Committee
  • Columbia University Mailman School of Public Health
    • Adjunct assistant professor, 2016 – present
    • Member, Alumni Board and Executive Committee
      • Chair, Governance Committee
    • Member, Alumni Advisory Board, Department of Health Policy and Management
    • Faculty advisor, September 2018 – present
    • Columbia Healthcare Ventures faculty advisor, February 2024 – present
  • Adjunct associate professor, Department of Health Science, College of Health Professions, Pace University, 2023 – present
  • Adjunct professor of law, Elisabeth Haub School of Law, Pace University, January 2024 – present
  • Adjunct assistant professor, School of Health Sciences and Practice, New York Medical College, 2007 – 2023
  • Adjunct professor, The University of Maryland – Global Campus, The Graduate School, 2005 – 2022
  • Adjunct associate professor of law, Brooklyn Law School, Fall 2010 – Spring 2012
  • Former member, Board of Trustees, Foundation for Quality Care, 2011 – 2019
  • Fellow, American Bar Foundation
  • American Health Law Association
    • Board member, June 2020 – Present
    • Member, 2000 – Present
    • Member, Development and Advancement Council, 2021 – 2022
    • Former vice chair, Long Term Care, Senior Housing, In-home Care and Rehabilitation Practice Group, 2007 – 2013
    • Member, Quality Council, 2013 – 2014
    • Member, LTC and the Law Program Planning Committee, 2014 – 2020
    • Member, Annual Meeting Program Planning Committee, 2024
  • American Bar Association
    • Member, Health Law Section and Business Law Section
    • Vice chair, The Health Lawyer Editorial Board, 2014 – 2016
    • Past chair, Private Equity Subcommittee, Healthcare and Life Sciences Committee of the Business Law Section
  • Member, District of Columbia Bar Association
  • New York State Bar Association
    • Past chair, Health Law Section, 2010 – 2011
    • Member, Executive Committee, 2010 – present
    • Past chair, Committee on Long-Term Care, 2003 – 2006
    • Member, Committee on Fraud, Abuse and Compliance


  • Chambers USA, Healthcare, New York, 2021 – 2024
  • Legal 500 US, Healthcare: Life Sciences and Healthcare: Service Providers, 2021
  • The Best Lawyers in America, Health Care Law, 2012 – 2024
  • Super Lawyers, New York, 2011, 2013 – 2023
  • Lawyers Alliance for New York, Cornerstone Award, 2018
  • Martindale-Hubbell, AV® Preeminent Peer Review Rated
  • Nightingale's Healthcare News, Outstanding Young Healthcare Lawyer, 2004
  • New York State Bar Association, Empire State Counsel Honoree for Pro Bono Service, 2018