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Dr. Mark Johnson, MD

Gastroenterologist

Professional statement

Dr. Mark Johnson received his undergraduate degree from the University of Washington. He attended medical school at George Washington University. Dr. Johnson then completed his residency in internal medicine at LAC-USC Medical Center; in addition he was a chief resident there. His postgraduate training continued at the University of California at Irvine with the completion of an additional two years of fellowship specializing in gastroenterology. He is board certified by the American Board of Internal Medicine as well as the specialty of Gastroenterology. Dr. Johnson is a member of several professional societies including the American Gastroenterology Association, the American College of Gastroenterology and the American Society of Gastrointestinal Endoscopy. He has been in private practice since 1989.

In-network insurances

  • AARP
  • APWU
  • Aetna

Specialties

  • Gastroenterologist

Practice names

Hospital affiliations

  • Scripps Mercy Hospital
  • Scripps Mercy Hospital Chula Vista
  • Sharp Chula Vista Medical Center
  • Sharp Coronado Hospital

Board certifications

  • American Board of Internal Medicine
  • Gastroenterology (Internal Medicine)

Education and training

  • Medical School - George Washington University, Doctor of Medicine
  • Los Angeles County+University of Southern California Medical Center (Internship)
  • Los Angeles County+University of Southern California Medical Center, Residency in Internal medicine
  • University of California, Irvine, Fellowship in Gastroenterology
  • VA Long Beach Healthcare System - VA Long Beach Medical Center (Fellowship)

Professional memberships

  • American College of Gastroenterology
  • American Society for Gastrointestinal Endoscopy

Awards and publications

  • Assistant Professor of Medical Center – Veterans Administration Long Beach

Zocdoc awards

See you again
Scheduling hero

Languages spoken

  • English
  • Spanish

Provider's gender

Male

NPI number

1861421372

Office locations

Mark Johnson

480 4th Ave

Chula Vista, CA 91910

Patient reviews
All reviews have been submitted by patients after seeing the provider. For more information, check out our Patient Knowledge Base.
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I had a great visit with Dr Johnson. He was very kind and gave me good sound solutions. I am looking forward to returning.
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Identified the problem right away and scheduled follow up treatment. What a relief!
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Dr. Johnson is very attentive to my concerns and shares my happiness in restored health.
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Super nice and knowledgeable doctor. Dr. Johnson is a great MD, and I would recommend him to anyone. He helped me and I know he can help you too!!
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My first visit with Dr. Johnson was fantastic — he was friendly, incredibly knowledgeable, and he took his time with me. I never once felt rushed or judged. He listened to all of my concerns and gave me a clear pathof next steps. His staff was also incredibly kind and professional — I waited less than 5 minutes and Dr.Johnson came to greet me himself. Outstanding way to run a practice.
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I found my visit to his office to be the most pleasant experiences I've ever had with any doctor ever in my lifetime.im actually looking forward to my next visit.
More than 1 year ago
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Small and quiet office. I did not have to wait at all. The doctor himself called me in. Very quick and easy and his bedside manner was great. I wish all doctors could be like Dr. Johnson!
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Very polite and attentive doctor.
More than 1 year ago
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He order the correct testing and diagnosed my very quickly. Due to his ordering and diagnosing, he kept me from getting very sick so thank you.
More than 1 year ago
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Great doctor, no nonsense, very knowledgeable with excellent bedside manners
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Had a great experience with Dr. Johnson on my first visit. He is a great listener, asks thoughtful questions and appreciates patients who are knowledgeable about their own condition. He did not just order a bunch of tests blindly, but actuallyadvised on the most prudent course of action given my situation. I really enjoyed the conversation and look forward to returning for a followup visit!
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Great Dr.
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Dr. Johnson was very kind and did a complete assessment of my symptoms. He was careful to explain the process he would follow in making a diagnosis. I appreciated his thoughtfulness and friendly demeanor.
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I highly recommend Dr. Johnson. He's the Best of the best. He really put my mind at ease.
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Dr. Johnson is at the top of his field in his profession. He is very easy going and reassuring . It was a pleasure to meet with him and work on my medical situation.
More than 1 year ago
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He was thorough, such a great listener, validated my concerns and assured me that he would attentively help me. I feel in good hands.
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Professional,courteous , caring ,respectful
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He never contacted me with my lab results. He had 5 vials of my blood taken, to test me for a few things & I never heard back from him. Waste of a trip, time & waste of my health insurance.
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Excellent Dr.! Very friendly, knowledgeable and attentive. Listened intently to everything I had to say. I would highly recommend Dr. Johnson.
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Staff was rude and incorrectly scheduled my endoscopy so I went to the hospital, only to find out that she had forgotten to schedule it. The doctor was unable to find anything, and said it was all in my head. Luckily,he gave me pictures of my endoscopy- the moment I showed them to my ENT doctor he was able to diagnose me. Do not go to this man. Even my ENT told me that he had heard bad things about this doctor, that he no longer cares.
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Dr. Johnson was great. Highly recommend him. Scheduling was easy, prompt and you never felt rushed. Thanks Dr!
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Sorry I have the wrong coverage to use ZocDoc.
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Dr. Johnson is a wonderful doctor and a great staff. Colonoscopy went so smoothly. Felt just fine after pocedure.
More than 1 year ago
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Very pleasant. Listened to what I had to say. Explained his thoughts so I was able to understand his treatment.
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I felt very uncomfortable throughout the entire appointment. He didn't seem to want to run preliminary test, just jump to the most extreme procedure. I feel like preliminary tests have to be run to ensure which procedure is correct.
More than 1 year ago
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I hope Doctor Mark Johnson will help me with my GL problems.
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Outstanding.
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He spent the time with me and made sure I got all my questions answered. He was also very knowledgable of my condition
More than 1 year ago
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Great doctor. Definitely recommend him!
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Dr. Johnson was very compassionate and listened to my information and worries. I did not feel rushed like I have in previous appointments with other physicians, and the environment in his office was very clean and calm.
More than 1 year ago
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Dr. Johnson was very nice.
More than 1 year ago
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More than 1 year ago
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