Dr. Jay Guan, M.D. earned his medical degree at Chicago Medical School—Rosalind Franklin University and completed his residency at University of Southern California. He finished his fellowship in Loma Linda University Medical Center. Dr. Guan has extensive training in a broad range of GI disorders and procedures. His clinical focus includes Inflammatory Bowel Disease, Barret’s Esophagus, NASH, GI motility disorders, Hepatitis B/C, and Eosinophilic Esophagitis.
Dr. Jay Guan, M.D. earned his medical degree at Chicago Medical School—Rosalind Franklin University and completed his residency at University of Southern California. He finished his fellowship in Loma Linda University Medical Center. Dr. Guan has extensive training in a broad range of GI disorders and procedures. His clinical focus includes Inflammatory Bowel Disease, Barret’s Esophagus, NASH, GI motility disorders, Hepatitis B/C, and Eosinophilic Esophagitis.
The reviews listed below were collected independently of Unio Specialty Care through rater8. Each review represents an authentic and verified patient experience.
Great doctor
(4 days ago)
Dec-2025
A really great doctor who cares about his patients and makes you feel very comfortable in the doctors office
(4 days ago)
Dec-2025
Wonderful doctor, knowledgeable, kind, and caring.
(1 week ago)
Dec-2025
Jay is one cool cat and one of the best Doctors, I’ve had the pleasure of knowing I have all the confidence in the world in him.
(1 week ago)
Dec-2025
The very best
(1 week ago)
Dec-2025
First time here. So far very impressed that the Dr had actually taken time to read what my issue was and gave me some positive directions. Time will tell…
(2 weeks ago)
Nov-2025
Very professional and thorough excellent customer service.
(2 weeks ago)
Nov-2025
Very informative and helpful about explaining the procedure.
(3 weeks ago)
Nov-2025
I have the deepest respect for him! He saved my life along with my own efforts!
(3 weeks ago)
Nov-2025
So nice and professional
(3 weeks ago)
Nov-2025
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GI-Camarillo
4005 Mission Oaks Blvd. Unit A Camarillo, CA 93012
GI-Oxnard
2241 Wankel Way Suite A Oxnard, CA
Dr. Jay Guan, M.D. earned his medical degree at Chicago Medical School—Rosalind Franklin University and completed his residency at University of Southern California. He finished his fellowship in Loma Linda University Medical Center. Dr. Guan has extensive training in a broad range of GI disorders and procedures. His clinical focus includes Inflammatory Bowel Disease, Barret’s Esophagus, NASH, GI motility disorders, Hepatitis B/C, and Eosinophilic Esophagitis.
Great doctor
A really great doctor who cares about his patients and makes you feel very comfortable in the doctors office
Wonderful doctor, knowledgeable, kind, and caring.
Jay is one cool cat and one of the best Doctors, I’ve had the pleasure of knowing I have all the confidence in the world in him.
The very best
First time here. So far very impressed that the Dr had actually taken time to read what my issue was and gave me some positive directions. Time will tell…
Very professional and thorough excellent customer service.
Very informative and helpful about explaining the procedure.
I have the deepest respect for him! He saved my life along with my own efforts!
So nice and professional