Dr. John Zeroogian, M.D. obtained his medical degree at the University of Pittsburgh and completed his medical residency at the Massachusetts General Hospital. Dr. Zeroogian followed by completing his gastroenterology fellowship at Beth Israel Hospital and Harvard Medical School. Dr. Zeroogian is able to use the latest techniques and technology to diagnose and treat a full range of digestive issues.
Dr. John Zeroogian, M.D. obtained his medical degree at the University of Pittsburgh and completed his medical residency at the Massachusetts General Hospital. Dr. Zeroogian followed by completing his gastroenterology fellowship at Beth Israel Hospital and Harvard Medical School. Dr. Zeroogian is able to use the latest techniques and technology to diagnose and treat a full range of digestive issues.
The reviews listed below were collected independently of Unio Specialty Care through rater8. Each review represents an authentic and verified patient experience.
Best Doctor ever!
Very thorough and caring
(1 week ago)
Mar-2026
Dr. answered all my questions. He was very knowledgeable.
(3 weeks ago)
Mar-2026
Dr, was very kind and answered my questions. I don’t feel nervous to have a colonoscopy now. I’ve been putting it off, but now I feel more at ease.
(1 month ago)
Mar-2026
Exceptional!
(1 month ago)
Feb-2026
Dr. Zeroogian, was very nice and professional. Explained to me what I need to have done based on my symptoms. I appreciated him listening to my complaints without me feeling like I was being rushed.
(1 month ago)
Feb-2026
Informative and reassuring.
(2 months ago)
Jan-2026
Very good at explaining what will take place step by step,
(8 months ago)
Jul-2025
Dr. Zeroogian was caring and professional.
(10 months ago)
May-2025
This was my first time I was seen by Dr. Zeroogian. First impressions are always right. He was very attentive, listened and made suggestions. I will diffinitely like to return.
(11 months ago)
Apr-2025
Professional
(1 year ago)
Feb-2025
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GI-Pasadena – Bellefontaine Street
50 Bellefontaine Street Suite 308 Pasadena, CA 91105
Dr. John Zeroogian, M.D. graduated summa cum laude from Springfield College and went on to obtain his medical degree at the University of Pittsburgh, where he graduated first in his class. He subsequently completed his medical residency at the Massachusetts General Hospital in Boston. Dr. Zeroogian followed by completing his gastroenterology fellowship at Beth Israel Hospital and Harvard Medical School.
After his medical training, Dr. Zeroogian joined a large group practice in Massachusetts for over twenty years and was the group’s President for several years. In 2019, he relocated with his family to Pasadena, CA. With his extensive training and experience, Dr. Zeroogian is able to use the latest techniques and technology to diagnose and treat a full range of digestive issues. In his spare time, Dr. Zeroogian enjoys many sports, traveling, and spending time with his wife and two children.
Best Doctor ever! Very thorough and caring
Dr. answered all my questions. He was very knowledgeable.
Dr, was very kind and answered my questions. I don’t feel nervous to have a colonoscopy now. I’ve been putting it off, but now I feel more at ease.
Exceptional!
Dr. Zeroogian, was very nice and professional. Explained to me what I need to have done based on my symptoms. I appreciated him listening to my complaints without me feeling like I was being rushed.
Informative and reassuring.
Very good at explaining what will take place step by step,
Dr. Zeroogian was caring and professional.
This was my first time I was seen by Dr. Zeroogian. First impressions are always right. He was very attentive, listened and made suggestions. I will diffinitely like to return.
Professional