Ann Mary Olson

Ann Mary Olson

Senior Counsel

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Healthcare Litigation
Healthcare Litigation
San Francisco

Ann Mary handles civil and regulatory litigation for health care industry clients and providers of long-term care services. She represents health care providers and senior care communities in administrative proceedings and litigation in a wide variety of matters, including appeals of regulatory citations, deficiencies, and licensure actions. Ann Mary handles cases through all phases of litigation: discovery, law and motion practice, mediation, arbitration, administrative hearings, trials, writs, and appeals.

Ann Mary also advises medical staffs, medical groups, and hospitals on credentialing and peer review matters. She represents medical staffs in peer review hearings and defends hospitals, medical staffs, and medical staff leaders in litigation arising from peer review activities.

Ann Mary has experience defending state and federal class actions, including securities fraud and consumer products litigation. She has also assisted individuals and entities in connection with SEC inquiries and investigations.


"New Timing Requirements for Certain California Eviction Actions Take Effect September 1," co-author, Senior Housing and Care Law Alert (August 2019)

"California Medical Staff Reporting Update: New Penalties For Failure To Report Go Into Effect January 1, 2018," co-author, Health Care Law Alert (November 2017)

"CMS Reverses Its Position Regarding Arbitration Agreements in Long-Term Care," co-author, Senior Housing and Care Law Alert (June 2017)

"District Court Orders CMS in Jimmo Settlement to Implement Maintenance Coverage Standard for SNF Services," co-author, AHLA Member Alert (February 2017)

See All Publications


"Changes to Physician Assistant Practice Agreement Requirements: What You Need to Know to Ensure Yours is Up to Date," California Association Medical Staff Services/50th Annual Educational Forum (June 2021)

“Responding to Concerns of Medical Staff Member Substance Abuse and Diversion,” California Association Medical Staff Services/50th Annual Educational Forum (June 2021)

“LGBT Considerations in Senior Living," LeadingAge California (May 2021)

"Understanding & Disputing SNF Citations," co-presenter, CAHF Spring Legislative Conference (March 2020)

"To Report or Not to Report Exploring Mandatory Reporting Requirements Under CA and Federal Law," co-presenter, CAMSS (May 2019)

"The Intricacies of Abuse Reporting and Investigations," co-presenter, CAHF (March 2019)

“Medical Staff Hearings," co-presenter, CAMSS Mid-Valley (November 2018)

See All Presentations


California Lawyers Association, Wiley W. Manuel Pro Bono Legal Services Award (20192021)

Professional Affiliations

Barrister's Club of the Bar Association of San Francisco, Health Law Section, Chair


J.D., University of California, Berkeley School of Law (2013)

A.B., Harvard College (2008)

Admissions And Courts


Fort Peck Tribal Court, Montana

San Francisco

415-995-5068 Direct Phone
415-995-3579 Fax

Email Attorney


Firm Leadership

Pro Bono Committee, Vice-Chair