Physician-led advisory support grounded in hospital experience.

MPA helps hospitals and physician groups manage utilization, medical necessity, payer review, documentation, and clinical revenue risk with practical physician advisor support.

A team built around clinical judgment.

MPA’s physician advisors bring direct clinical experience, utilization management expertise, and familiarity with hospital operations. The team has reviewed thousands of medical necessity cases, supported high-volume peer-to-peer activity, and provided expert guidance across a broad range of service lines.

MPA’s clinicians understand that level-of-care determinations affect patient flow, clinical workload, reimbursement, denial risk, and the ability of hospitals to focus resources where they belong: on patient care.

Leadership

Jonathan B. Cohen, MD

Founder & Chief Executive Officer

Jonathan B. Cohen, MD is board certified in Internal Medicine and has more than 12 years of experience as a practicing hospitalist. He is board certified in Health Care Quality and Management and is a Board Certified Advanced Physician Advisor.

Dr. Cohen has served on the editorial committee of ABQAURP and participated on the subject matter expert panel for the Physician Advisor Certification Test.

Richard Martin, PA-C

Richard Martin, PA-C is a is a board-certified physician assistant, clinical advisor and utilization management consultant with more than 15 years of experience in hospital medicine, observation medicine, and urgent care.

Prior to entering clinical practice, he held leadership roles in public relations, marketing and corporate affairs.

Zakary Walker, MPAS, PA-C

Zakary Walker, MPAS, PA-C is a board-certified physician assistant with more than 20 years of experience in hospital medicine, which includes critical care, observation and emergency medicine.

He currently serves as Lead APP for hospitalist, observation, behavioral health and palliative care.

Jonathan Wenk, MD, FACEP

Jonathan Wenk, MD, FACEP is a board-certified emergency medicine physician with more than 25 years of clinical experience.

He previously served as Medical Director of the Emergency Department at Frederick Health and at Adventist White Oak Medical Center and currently serves as President of the Medical Staff at Adventist White Oak Medical Center.

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MPA helps hospitals and physician groups strengthen utilization decisions, reduce avoidable denial risk, and support clinical teams with timely physician advisor expertise.