Mark A. Kadzielski


Los Angeles
T +1.310.442.8815
F +1.310.820.8859

"The 'extremely talented' Mark Kadzielski works across a range of issues including peer review, Medicare certification and government investigations. Impressed clients describe him as ‘very competent, timely and efficient.'"

— Chambers USA 2016


Mark Kadzielski provides regulatory and operational guidance and representation to hospitals, medical staffs, managed care enterprises and institutional and individual healthcare providers throughout the United States. His work includes government regulatory investigations, contracting issues, credentialing, peer review, licensing, medical staff bylaws, joint commission accreditation and Medicare certification. Mark has prepared more than 200 sets of medical staff bylaws and has handled peer review hearings and appeals, including litigation in many courts.

Recognitions and Memberships


  • Chambers USA: Healthcare in California (2005 to 2017)
  • The Best lawyers in America©
    • Los Angeles: Healthcare Law (1993 to 2017)
  • Southern California “Super Lawyer” (2004 to 2017)


  • American Academy of Healthcare Attorneys
    • Board of Directors (1995 to 1996)
    • Medical Staff and Physician Relations Committee
      • Chair
      • Vice Chair
  • American Health Lawyers Association (AHLA)
    • Fellows Coordinating Committee: Chair (2016 to 2017)
      • Class of Fellows: Inaugural Class
      • Diversity+Inclusion Council: Appointed Liaison
    • Board of Directors (1997 to 2001)
    • Executive Committee (1997 to 1998)
  • California Society for Healthcare Attorneys
  • National Practitioner Data Bank
    • Executive Committee: Alternate member


  • Alpha Sigma Nu, Jesuit Honor Society
    • President (2003 to 2006)
    • Treasurer (2000 to 2003)
    • National Board (2000 to 2005)



  • California


  • J.D., University of Pennsylvania Law School, 1976
  • A.B., John Carroll University, 1968, magna cum laude