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.
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 week ago)
Nov-2025
Very professional and thorough excellent customer service.
(1 week ago)
Nov-2025
Very informative and helpful about explaining the procedure.
(1 week ago)
Nov-2025
I have the deepest respect for him! He saved my life along with my own efforts!
(2 weeks ago)
Nov-2025
So nice and professional
(2 weeks ago)
Nov-2025
Very informative!
(2 weeks ago)
Nov-2025
Very clear & personable
(2 weeks ago)
Nov-2025
Very friendly and helpful
(2 weeks ago)
Nov-2025
Thank you, Doctr. He’s the best I met him Doctr. Thank you for everything. Help me. Thanks again.
(2 weeks ago)
Nov-2025
Dr. Guan had obviously read my blood test results prior to my appointment. He was knowledgeable on celiac.
(2 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.
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
Very informative!
Very clear & personable
Very friendly and helpful
Thank you, Doctr. He’s the best I met him Doctr. Thank you for everything. Help me. Thanks again.
Dr. Guan had obviously read my blood test results prior to my appointment. He was knowledgeable on celiac.