Mark S. McGowan, MD

Mark S. McGowan, MD

  • Internal Medicine
Average rating: 4.9
15th Street Plaza Family Medicine & Internal Medicine | 1260 15th Street, Suite 1502, Santa Monica, CA 90404


Other Hospital Affiliations: St. John's Health Center

Other Training & Special Interests: Sub-specialties in Pulmonology and Critical Care Medicine. Assistant Clinical Professor of Medicine, USC School of Medicine (1982-86).

Dr. McGowan has been in practice for more than 30 years, board certified in Internal Medicine and Pulmonary Diseases. He has extensive experience in the treatment of hospitalized patients and was the medical director of one of the largest intensive care units in Los Angeles. He is now devoted exclusively to the out-patient care of adults. Dr. McGowan is mindful of how bewildering modern medical care can be and is committed to using his knowledge, experience and compassion to guide his patients toward the best health.




Medical Board Certifications

Pulmonary Disease, American Board of Internal Medicine, 1980
Internal Medicine, American Board of Internal Medicine, 1977


Pulmonary Diseases, Washington University School of Medicine, 1979


Internal Medicine, University of Missouri at Columbia School of Medicine, 1977
Internal Medicine, Jewish Hospital of St. Louis, 1975


Internal Medicine, Washington University in St. Louis, 1974


MD, Northwestern University Feinberg School of Medicine, 1973

Hospital Affiliations

Ronald Reagan UCLA Medical Center

UCLA Santa Monica Medical Center

Areas of Focus


  • Aetna
  • Anthem Blue Cross
  • Blue Shield of California
  • Centivo
  • Cigna
  • First Health
  • Health Net of California
  • Interplan (part of HealthSmart)
  • L.A. Care
  • MultiPlan
  • UFCM Health System
  • Prime Health Services
  • Private Healthcare Systems (PHCS)
  • UnitedHealthcare

The list of health care plans above may not be comprehensive and could change. 
Please contact your benefits coordinator or health insurance company directly to verify coverage.

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Overall Rating:
222 total ratings | 63 reviews
February 13, 2024
Dr McGowan listens and ask questions to fully diagnose issue.
February 7, 2024
Dr. McGowan is always professional, kind and knowledgeable. Excellent physician.
February 7, 2024
Dr. McGowan is always thorough, friendly and willing to answer questions.
February 5, 2024
Yearly physical. Dr. McGowan is always very caring
February 5, 2024
Very competent, thorough, with great patient care.