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Mark Y. Johnson, MD

Mark Y. Johnson, MD photo

Dr. Mark Johnson received his medical degree at the George Washington University. He then completed his internship and residency in Internal Medicine at the University of Southern California, School of Medicine. He continued his medical training and completed his Gastroenterology fellowship at the VA Long Beach Healthcare System.

Dr. John...

Areas of focus

Languages Spoken

  • › English
  • › Spanish

Board certifications

  • › American Board of Internal Medicine, Gastroenterology
  • › American Board of Internal Medicine

Hospital affiliations


  • › The George Washington University, MD - 1973
  • › University of Southern California, School of Medicine, Internal Medicine Internship - 1976
  • › University of Southern California, Internal Medicine Residency – 1977
  • › VA Long Beach Healthcare System, Gastroenterology Fellowship
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