Photo of Mark A. Johnson

Mark A. Johnson



Revelle College, University of California, San Diego, B.A., 1994

Emory University School of Law, J.D., 1997, with honors

Bar Admissions

  • 1997, California
Presentations & Speaking Engagements

With more than two decades of experience as a health care lawyer, Mark focuses his practice on legal issues in the post-acute healthcare arena. Litigating a wide-range of civil and regulatory cases, he represents skilled nursing facilities and a broad range of post-acute healthcare providers; healthcare provider trade associations; pharmacies; home health companies; and other medical care-related businesses and individuals. His clients include some of the largest skilled nursing companies in California.

Mark is the Managing Partner of the firm's San Diego office. Serving in the firm’s Fraud & Abuse Practice Group, Mark advises clients on issues involving the False Claims Act and fraud investigations that range from the district attorney’s office to state and federal government agencies. His practice has grown rapidly in the past decade as the federal government has ramped up anti-fraud enforcement activity in the health care space. He draws on his vast industry insight and his ability to consider both the wide-angle perspective and the nuanced details of a matter. This serves him well when he takes on very complex, high-stakes cases that often involve tens of millions of dollars and take years to investigate, dispute, and resolve.

Chambers USA remarks that Mark "offers notable fraud and abuse strength.” Sources say "he is knowledgeable and has great insight into not only the legal aspects, but in areas of business and public relations." One client stated, "he's really good with clients and inspires great confidence in them." Another client said Mark is "excellent in every way."

As part of a team serving groups such as the California Association of Health Facilities, Mark feels privileged to participate in important policy issues and the development of law through representing stakeholders, helping to draft and shape legislation, training clients in compliance, and defending them in litigation brought under these acts.

Widely recognized for his public speaking skills, Mark regularly gives talks at conferences, seminars, and other professional events. Because of Mark’s deep understanding of the many nuances of health care law, his clients turn to him for guidance in their dealings and disputes with health plans, insurance companies, and state and federal regulatory agencies, Medicare and Medicaid reimbursements, as well as for defense in unfair competition cases in California. Many businesses and organizations lean on Mark to serve as their outside general counsel. He handles an array of day-to-day operational questions, strategic planning issues, compliance matters, and reimbursement battles. As both a legal and business adviser, he counsels clients on defending the money they’ve received, maximizing the reimbursements they’re due and preparing for the future.

Mark’s recent victories include a seven year dispute with California’s Medicaid Program over tens of millions of dollars of reimbursement owed to a skilled nursing facility chain. Mark and his team successfully litigated state and federal legal issues governing Medicare and Medicaid reimbursement principles resulting in the recalculation of seven years of Medicaid reimbursement. Additionally, Mark has worked closely with his skilled nursing clients to help them navigate the challenges of the COVID-19 pandemic.

Representative Matters

Mount Diablo Medical Center v. Health Net of California, Inc., 101 Cal.App.4th 711

The Chamber of Commerce of the U.S. v. Bill Lockyer

Professional Affiliations

  • American Bar Association, Health Law Section, member of Long Term Care Task Force
  • American Health Lawyers Association
  • California Association of Health Facilities
  • California Society of Healthcare Attorneys

Honors & Awards

  • Best Lawyers, Health Care Lawyer of the Year, 2022
  • Recognized by Best Lawyers, 2018-2023
  • Recognized by Chambers USA as an Outstanding California health law attorney, 2021-2022
  • Law 360 Health Care MVP, 2020
  • In 2007, Mr. Johnson was awarded a Distinguished Service Award from the California Association of Health Facilities in recognition of his excellent service and outstanding dedication to the long-term care profession in California

Presentations & Speaking Engagements


Health Law Perspectives

For media assistance, please contact Maura Fisher at 202-580-7714.