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.
Arrived for appointment only to be sent away claiming no authorization for procedure had been created and an ADDITIONAL consult was required. Office staff should have informed me Of all of this well before appointment time. Complete waste of time and money.
(3 days ago)
Dec-2025
He listens & explains and understands.
Bonus willing to compromise.
(2 weeks ago)
Dec-2025
Great doctor who really cares about my health and diagnosing the underlying issue. He also uses modern technology really well to help him do his job efficiently.
(2 weeks ago)
Dec-2025
What a great doctor
(2 weeks ago)
Dec-2025
Great doctor
(3 weeks ago)
Dec-2025
A really great doctor who cares about his patients and makes you feel very comfortable in the doctors office
(3 weeks ago)
Dec-2025
Wonderful doctor, knowledgeable, kind, and caring.
(1 month 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 month ago)
Dec-2025
The very best
(1 month 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…
(1 month ago)
Nov-2025
Read More
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.
Arrived for appointment only to be sent away claiming no authorization for procedure had been created and an ADDITIONAL consult was required. Office staff should have informed me Of all of this well before appointment time. Complete waste of time and money.
He listens & explains and understands. Bonus willing to compromise.
Great doctor who really cares about my health and diagnosing the underlying issue. He also uses modern technology really well to help him do his job efficiently.
What a great doctor
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…