Founder profile

Founder-led clinical executive expertise for complex healthcare matters.

Mason MD Advisors is led by Mary Mason, MD, who personally leads engagements and draws on additional specialty and executive expertise when a matter requires it.

Discuss an engagement Download CV

Case list and prior testimony history available upon request.

Dr. Mason accepts engagements from both plaintiff and defense counsel.

Founder-led expertise

A direct relationship, with the right expertise brought in when needed.

Mary Mason, MD, leads every engagement and can draw on a wide variety of credentialed experts when a matter calls for additional specialty or executive perspective.

Mary Mason, MD, founder of Mason MD Advisors — Mary Mason, MD

Mary V. Mason, MD, MBA, FACP

Founder, Board-Certified Internist & Physician Executive

MD, MBA, FACP

Mary V. Mason, MD, MBA, FACP is a board-certified internist and physician-executive with 27 years of healthcare leadership experience. She spent 17 years at Centene Corporation, including nine years as Corporate Chief Medical Officer, before serving as Enterprise Chief Medical Officer at CareSource. Her operating expertise spans managed care, Medicaid, Marketplace, and Medicare Advantage programs, medical management, quality of care, clinical strategy, and health plan governance.

Managed care
Medicaid, Marketplace & Medicare Advantage
Medical management & quality of care
Health plan governance

Advisory experience

Expertise aligned to the questions that matter.

Legal and expert witness matters

Independent clinical perspective for case review, medical opinions, deposition support, and testimony — including matters involving Medicaid, Marketplace, and Medicare Advantage coverage disputes, utilization review and medical necessity determinations, and health plan governance.

Managed care and utilization questions

Practical insight into clinical decision-making, coverage considerations, and care management processes.

Healthcare leadership decisions

Executive-level perspective for organizations navigating complex clinical, operational, and strategic issues.

Author & educator

Longstanding scholarship and teaching in managed care.

Managed Care Primer

Author of Managed Care Primer, reflecting decades of professional, executive, and academic experience in managed care and directly relevant to managed-care expert witness work.

Think Like a Doctor, Lead Like a CEO

Author of Think Like a Doctor, Lead Like a CEO, a #1 New Release in two categories that draws on 27 years leading clinical and business operations at national health plans to explore how physician-executives bridge clinical judgment and organizational leadership.

Washington University faculty

Academic appointments across the School of Law, Olin Business School, and Brown School of Social Work, including teaching on Medicare Advantage regulatory frameworks and health policy.

Peer-reviewed research

Lead author of peer-reviewed work involving outcomes in Medicaid populations.

Think Like a Doctor, Lead Like a CEO by Mary Mason, MD, MBA — Featured book
Think Like a Doctor, Lead Like a CEO
USA National Best Seller
A practical leadership perspective from Mary Mason, MD, MBA. #1 New Release on Amazon in Communication in Management and Total Quality Management.

Confidential inquiry

Discuss your matter.

Tell us about the clinical or managed care questions at hand.

Discuss your matter