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Internist, Gastroenterologist (digestive), Geriatric Specialist (elderly care)

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).

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Specialties & Research

Dr. Peter Barrett, MD is board certified in Internal Medicine and Gastroenterology.

  • He has special expertise in 6 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Alzheimer's Disease
  • Constipation
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Education & Awards

Dr. Barrett graduated from Harvard University , Boston.


Dr. Barrett has 2 hospital affiliations:

  • St. Mary Medical Center 
  • Los Angeles County - Harbor - UCLA Medical Center 


  • English

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Additional Information
Dr. Peter Van Doren Barrett MD is a male Internist and practices in Internal Medicine, Gastroenterology, and Geriatric Medicine.
Where does Dr. Peter V. Barrett practice?
Dr. Peter Barrett has 2 office locations.
Dr. Peter Barrett practices Internal Medicine, Gastroenterology, and Geriatric Medicine near Torrance, CA.
See Torrance Internists, Torrance Gastroenterologists, and Torrance Geriatric Doctors.