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.
Overall very happy but I had to be hospitalized.possibly in part because I had a.dramatic loss of weight and kidney failure.
Jul-2025
I absolutely love Dr. Guan! He is thorough, knowledgeable and looks out for my best interests!
My only problem is touching base with the support staff that I need to talk to! I have asked for refills and even the pharmacy has requested refills and we never hear back. I have had blood tests that I got paperwork for and not being able to have them done after waiting 1/2 hour. They tell me there are no codes on my paperwork so they can't do them. Called the office and asked them to mail me the orders with the codes needed and never received them.
Besides all of that I love Dr. Guan ❤️. He is so in tune with what I am going through!
Jul-2025
Dr Guan did my colonoscopy in April and my Endoscopy a few days ago. I feel privileged to be his patient and both procedures went flawlessly! Superb bedside manner and meticulously thorough! I feel blessed to have discovered him and only moved to Camarillo several months ago! Niko
Jun-2025
Extremely kind and professional
Jun-2025
Rrt
Jun-2025
Fantastic experience!
Jun-2025
Nice and professional doctor
Jun-2025
Very friendly Doctor
Jun-2025
I finally found relief with Dr. Guan. He is incredibly smart, thorough, and compassionate. He took the time to listen carefully, explained everything clearly, and made me feel truly heard. I never felt rushed, and his attention to detail was outstanding. Highly recommend!
Jun-2025
explains very well
Jun-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.
Overall very happy but I had to be hospitalized.possibly in part because I had a.dramatic loss of weight and kidney failure.
I absolutely love Dr. Guan! He is thorough, knowledgeable and looks out for my best interests! My only problem is touching base with the support staff that I need to talk to! I have asked for refills and even the pharmacy has requested refills and we never hear back. I have had blood tests that I got paperwork for and not being able to have them done after waiting 1/2 hour. They tell me there are no codes on my paperwork so they can't do them. Called the office and asked them to mail me the orders with the codes needed and never received them. Besides all of that I love Dr. Guan ❤️. He is so in tune with what I am going through!
Dr Guan did my colonoscopy in April and my Endoscopy a few days ago. I feel privileged to be his patient and both procedures went flawlessly! Superb bedside manner and meticulously thorough! I feel blessed to have discovered him and only moved to Camarillo several months ago! Niko
Extremely kind and professional
Rrt
Fantastic experience!
Nice and professional doctor
Very friendly Doctor
I finally found relief with Dr. Guan. He is incredibly smart, thorough, and compassionate. He took the time to listen carefully, explained everything clearly, and made me feel truly heard. I never felt rushed, and his attention to detail was outstanding. Highly recommend!
explains very well