Dr. John Romney Marshall MD is a male Internist and practices in Obstetrics & Gynecology, Gynecology, Cardiovascular Disease, and Cardiology.
Dr. John Marshall has 10 office locations.
Los Angeles County - Harbor - UCLA Medical Center
1000 W Carson St
Torrance, CA 90502

Phone Number
Locations and availability (10)
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).


Our records indicate this doctor is retired.

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Specialties & Research

Dr. John Marshall, MD is board certified in Obstetrics & Gynecology.

  • He has special expertise in 7 areas:
  • Acute Coronary Syndrome (ACS)
  • Heart Block
  • High Blood Pressure (Hypertension)
  • High Cholesterol (Hypercholesterolemia)
  • Hot Flashes
  • Menopause
  • Unstable Angina

Education & Awards

Dr. Marshall graduated from University of Pennsylvania , Philadelphia.


Dr. Marshall has 6 hospital affiliations:

  • Northeast Georgia Medical Center 
  • Dekalb Medical Center 

Accepted Insurance Plans

Dr. Marshall accepts these health insurances in at least one office:

  • United Healthcare - 2 plans
  • Unicare - 2 plans
  • Anthem - 2 plans

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Additional Information
Where does Dr. John R. Marshall practice?
Dr. John Marshall practices Obstetrics & Gynecology, Gynecology, Cardiovascular Disease, and Cardiology near Torrance, CA.
Additional practice locations include: Toccoa, GA and Demorest, GA.
See Torrance Obstetricians & Gynecologists and Torrance Cardiologists.