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Nossaman LLP

Mary Powers Antoine

Partner

T 916.442.8888
F 916.442.0382
621 Capitol Mall, 25th Floor
Sacramento, CA 95814

Mary Powers Antoine has more than three decades of legal experience in the healthcare industry with a previous career as a registered nurse to deliver personalized legal advice with a real world perspective.  She represents managed care plans, hospitals and health facilities as well as physicians' groups on a wide range of regulatory, contracting and licensing issues.  She advises medical staffs on peer review investigations, hearings and other disciplinary actions, bylaws, rules and regulations, Joint Commission compliance and compliance with state and federal laws, and patient care issues.  

Ms. Antoine has developed an in-depth understanding of the operational and business issues the healthcare industry faces.  She uses her expertise to guide clients on the full range of state and federal regulatory and accreditation issues from Medicare and Medi-Cal, The Joint Commission and the California Knox-Keene Health Care Service Plan Act, to HIPAA and EMTALA. She regularly represents clients in matters involving the Department of Managed Health Care, the Joint Commission, NCQA and the Centers for Medicare & Medicaid Services.

Ms. Antoine's experience representing clients from different sectors of the industry provides her with a strategic understanding of the business issues they face.  She offers her clients pro-active and practical legal solutions to further their business success.

Ms. Antoine was chosen for individual recognition in California Healthcare by Chambers and Partners, 2014-2015, and is AV Preeminent® Peer Review Rated by Martindale-Hubbell. She has also been recognized by San Francisco Magazine since 2010 as a Northern California "Super Lawyer" in the area of Healthcare law.  She was also the first woman to serve as Nossaman's assistant managing partner.

Representative Work

Medical Staffs

Providing a full range of medical staff legal counsel services, including peer review investigations, hearings, medical staff bylaws, and Joint Commission compliance, to the following medical staff clients:

  • Cedars Sinai Medical Center
  • The Medical Staffs of Kaiser Foundation Hospitals throughout Northern California
  • Sonora Regional Medical Center 
  • The Consolidated Medical Staff of Hanford Community Medical Center, Selma Community Hospital and Central Valley General Hospital
  • Feather River Hospital

Managed Care

Centene, Inc.  Representing this national healthcare company and its affiliated healthcare service plan entities, California Health and Wellness, Inc., OptiCare Vision, Inc. and Cenpatico International, Inc., regarding regulatory compliance with Medi-Cal and the Knox-Keene Act.

Kaiser Foundation Health Plan, Inc.  Representing this national healthcare service plan, and its affiliated entities, on a broad range of managed care issues with state regulators involving compliance with Medicare, the Knox-Keene Act and other state managed care laws; and in business transactions, which involve issues related with Knox-Keene Act, Medicare, Medi-Cal and fraud and abuse compliance.

California Association of Dental Plans.  Providing all legal and regulatory counsel to the state's only dental plan industry group.  Representing the Association in all interactions with Department of Managed Health Care regulators on a full range of issues.

Holman Professional Counseling Centers.  Providing regulatory and legal counsel to this specialized mental healthcare service plan.

Human Affairs International of California.  Providing regulatory and legal counsel to this specialized mental healthcare service plan.  HAI is a subsidiary of Magellan Healthcare.

Physician Groups

Providing legal counsel on a wide range of issues, including peer review investigations and hearings, and Medicare, Medi-Cal, Knox-Keene Act, NCQA and AAAHC compliance, to the following clients:

  • Health Care Partners Affiliates Medical Group
  • Sutter North Medical Group
  • The Permanente Medical Group, Inc.
  • Southern California Permanente Medical Group

Health Facilities

Providing a wide range of legal services to these acute care, skilled nursing and ambulatory surgery health facilities:

  • Children's Hospital & Research Center Oakland
  • Retirement Housing Foundation, a national nonprofit corporation operating skilled nursing facilities, assisted living facilities, and senior living apartments
    United Surgical Partners, Inc., a national company operating ambulatory surgery centers

Awards & Honors

Chambers Logo - top ranked 2016 

Chosen for individual recognition for Healthcare in California by Chambers and Partners, 2014-2016.

Named a Northern California "Super Lawyer" in the area of Health Care Law by San Francisco Magazine, 2010-2014, 2016.

AV Preeminent® Peer Review Rated by Martindale-Hubbell.

Mary Powers Antoine
Mary Powers Antoine

Practices

Education

J.D., University of the Pacific, McGeorge School of Law, 1983

B.S., University of San Francisco, 1976, Nursing

Admissions

California

U.S. District Court, Northern District of California

Professional Affiliations

Past President, The American Association of Nurse Attorneys

Past Instructor in Managed Care Law and Healthcare Law, University of California, Davis

Board of Trustees, Chair of Medical Policy Committee, Sutter Health Sacramento Sierra Region (2000-2009)

American Bar Association

California Society of Health Care Attorneys

American Health Lawyers Association

Sacramento County Bar Association, Health Law Section

Awards & Honors

Chambers Logo - top ranked 2016 

Chosen for individual recognition for Healthcare in California by Chambers and Partners, 2014-2016.

Named a Northern California "Super Lawyer" in the area of Health Care Law by San Francisco Magazine, 2010-2014, 2016.

AV Preeminent® Peer Review Rated by Martindale-Hubbell.

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