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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. Ronald Griffin, MD is board certified in Internal Medicine and Gastroenterology.

  • He has special expertise in 5 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Constipation
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Education & Awards

Dr. Griffin graduated from George Washington University.


Dr. Griffin has 1 hospital affiliations:

  • VA Loma Linda Healthcare System 

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Additional Information
Dr. Ronald Alphonso Griffin MD is a male Internist, has 41 years of experience and practices in Internal Medicine and Gastroenterology.
Where does Dr. Ronald A. Griffin practice?
Dr. Ronald Griffin has 1 office location.
Dr. Ronald Griffin practices Internal Medicine and Gastroenterology near Loma Linda, CA.
See Loma Linda Internists and Loma Linda Gastroenterologists.