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.
Explanation of everything Great job
(2 weeks ago)
Sep-2026
Everyone is knowledgeable and friendly
(2 weeks ago)
Sep-2026
Beyond words happy with the doctor.
(2 weeks ago)
Sep-2026
Dr. Guan was very personable and took time to review my records and provided time for me to ask questions.
(3 weeks ago)
Aug-2026
Great communication and care!
(3 weeks ago)
Aug-2026
Very friendly and knowledgeable
(3 weeks ago)
Aug-2026
Compassionate, listened to concerns. Explained upcoming procedures.
(3 weeks ago)
Aug-2026
Dr. Guan is very personable and easy to talk to. He really listens. I have a serious problem and I feel like I’m in good hands and taken care of. He is really on the ball and knows his stuff!
(1 month ago)
Aug-2026
Dr. Guan is very knowledgeable and a good listener.
(1 month ago)
Aug-2026
He is kind and intelligent.
(1 month ago)
Aug-2026
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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.
Explanation of everything Great job
Everyone is knowledgeable and friendly
Beyond words happy with the doctor.
Dr. Guan was very personable and took time to review my records and provided time for me to ask questions.
Great communication and care!
Very friendly and knowledgeable
Compassionate, listened to concerns. Explained upcoming procedures.
Dr. Guan is very personable and easy to talk to. He really listens. I have a serious problem and I feel like I’m in good hands and taken care of. He is really on the ball and knows his stuff!
Dr. Guan is very knowledgeable and a good listener.
He is kind and intelligent.