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Dr. Guy Weiss, MD

Dr. Guy Weiss, MD

Age 39 Gastroenterology M

Telehealth available

Accepting New Patients


Dr. Guy Weiss, MD is a gastroenterology specialist in Los Angeles, CA. He currently practices at UCLA MEDICAL GROUP and is affiliated with Ronald Reagan UCLA Medical Center. He accepts multiple insurance plans. Dr. Weiss is board certified in Gastroenterology.


  1. Ucla Medical Group

    1. 1
      Ucla Medical Group
      100 Ucla Medical Plz Ste 205, Los Angeles, CA 90024 Existing Patients: (310) 208-5400
  1. Matthew Gemp, DMD, PLLC

    1. 2
      Erie County Medical Center
      462 Grider St, Buffalo, NY 14215 Existing Patients: (716) 898-4226


  • UCLA, Fellowship Hospital — 2016
  • Tel Aviv University / Sackler Faculty of Medicine, Medical School — 2010

Insurance Accepted

  • Anthem
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of California
  • CareFirst Blue Cross Blue Shield
  • Cigna
  • First Health (Coventry Health Care)
  • MultiPlan

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Dr. Weiss has been my GI doc for 3 years, and I can't thank him enough. I came to see him for a second opinion because I was suffering from severe diarrhea. I felt my previous physician wasn't listening to me and my problems (said my celiac was just fine -- totally dismissive). Dr. Weiss, on the other hand, took the time to listen and thoroughly evaluate my symptoms. He arranged an endoscopy for me within two weeks of our appointment, and then discovered I have refectory celiac disease!!! I was grateful for Dr. Weiss' careful attention and expertise!! He takes a holistic approach and also referred me to his dietitians Nancy and later Janelle, and since then, my disease has been under control. He's funny, smart, and genuinely cares about his patients' well-being. Thank you!
Jessica — Mar 18, 2020
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Photo: Dr. Guy Weiss, MD
Dr. Guy Weiss, MD
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Hospital Affiliations

  • Ronald Reagan UCLA Medical Center
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