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.
Buen dioctor
(1 month ago)
May-2026
Very present and clear in his communications Trust worthy
(1 month ago)
May-2026
Very knowledgeable
(1 month ago)
May-2026
He is the best doctor I've ever had!! I recommend him to anyone!
(1 month ago)
May-2026
Thorough…personable…patient…inspires confidence…
(1 month ago)
Apr-2026
Dr Guan is extremely thorough and patient. He explains things well.
(1 month ago)
Apr-2026
Knowledge through polite kind
(1 month ago)
Apr-2026
5 stars for Dr Guan! He is super smart and really listens to my concerns. He makes my day to day life so much better under his care.
(1 month ago)
Apr-2026
He was very informative. Answered my questions. Then left the exam room without saying goodbye. After a few awkward minutes in the exam room not knowing if I was to stay or go, I went into the hallway. Found him and asked if I was done. He said an assistant would be in to set up an appointment. Very awkward and outside the norm for common courtesy. Yet, I reiterate, he answered my questions and was well-informed medically.
(1 month ago)
Apr-2026
Very nice and informative.
(1 month ago)
Apr-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.
Buen dioctor
Very present and clear in his communications Trust worthy
Very knowledgeable
He is the best doctor I've ever had!! I recommend him to anyone!
Thorough…personable…patient…inspires confidence…
Dr Guan is extremely thorough and patient. He explains things well.
Knowledge through polite kind
5 stars for Dr Guan! He is super smart and really listens to my concerns. He makes my day to day life so much better under his care.
He was very informative. Answered my questions. Then left the exam room without saying goodbye. After a few awkward minutes in the exam room not knowing if I was to stay or go, I went into the hallway. Found him and asked if I was done. He said an assistant would be in to set up an appointment. Very awkward and outside the norm for common courtesy. Yet, I reiterate, he answered my questions and was well-informed medically.
Very nice and informative.