Dr. Karen Simon, M.D. received her B.A. from Stanford University in 1996. She then attended Northwestern University for medical school. She completed her residency at Cedars-Sinai Medical Center in 2004 and her fellowship at UCLA and Cedars in 2008. Dr. Simon has proudly been serving patients in Ventura County since 2008 and is very involved in field research. She enjoys educating the doctors and the community as a lecturer on topics such as colorectal cancer screening at St. John's Hospital.
Dr. Karen Simon, M.D. received her B.A. from Stanford University in 1996. She then attended Northwestern University for medical school. She completed her residency at Cedars-Sinai Medical Center in 2004 and her fellowship at UCLA and Cedars in 2008. Dr. Simon has proudly been serving patients in Ventura County since 2008 and is very involved in field research. She enjoys educating the doctors and the community as a lecturer on topics such as colorectal cancer screening at St. John's Hospital.
The reviews listed below were collected independently of Unio Specialty Care through rater8. Each review represents an authentic and verified patient experience.
Best gastroenterologist out there.
(1 week ago)
Oct-2026
Love her!!
(2 weeks ago)
Sep-2026
My first visit with Dr. Simon went very well. Very friendly, professional and patient to listen with zero rush!
(2 weeks ago)
Sep-2026
Made me feel welcomed.
(3 weeks ago)
Sep-2026
Always treated professionally with kindness, thoughtfulness, and respect.
(3 weeks ago)
Sep-2026
Outstanding doctor! A colonoscopy is a pain in the butt, but Dr. Simon takes the pain out of this procedure!
-ER procedure on Sep 10, 2026
(1 month ago)
Sep-2026
Professional, straight to the point, personal and very kind... Great bedside manner...
(1 month ago)
Sep-2026
She is a very compassionate doctor.
(1 month ago)
Sep-2026
Staff amazing.. wait time was short. Check in was easy.
Didn't feel rushed when seeing Dr. she was very thorough and kind! I would definitely recommend.
(1 month ago)
Sep-2026
Dr Simon really listens and is very personable.
(1 month ago)
Sep-2026
GI-Camarillo
4005 Mission Oaks Blvd. Unit A Camarillo, CA 93012
GI-Oxnard
2241 Wankel Way Suite A Oxnard, CA
Dr. Karen Simon, M.D. received her B.A. from Stanford University in 1996. She then attended Northwestern University for medical school. She completed her residency at Cedars-Sinai Medical Center in 2004 and her fellowship at UCLA and Cedars in 2008.
Dr. Simon has proudly been serving patients in Ventura County since 2008 and is very involved in field research. Dr. Simon is also a speaker for Exact Sciences on behalf of Cologuard and is actively associated in research studies. Additionally, she is a part of the Takeda Chloride Channel Council and a speaker for Amitiza, as well.
She enjoys educating the doctors and the community as a lecturer on topics such as colorectal cancer screening at St. John's Hospital, where she is also a part of the Ethics Committee.
When Dr. Simon is not treating patients, she enjoys spending time with her husband and two children.
Best gastroenterologist out there.
Love her!!
My first visit with Dr. Simon went very well. Very friendly, professional and patient to listen with zero rush!
Made me feel welcomed.
Always treated professionally with kindness, thoughtfulness, and respect.
Outstanding doctor! A colonoscopy is a pain in the butt, but Dr. Simon takes the pain out of this procedure! -ER procedure on Sep 10, 2026
Professional, straight to the point, personal and very kind... Great bedside manner...
She is a very compassionate doctor.
Staff amazing.. wait time was short. Check in was easy. Didn't feel rushed when seeing Dr. she was very thorough and kind! I would definitely recommend.
Dr Simon really listens and is very personable.