Karen Simon, MD

Practice: Unio Specialty Care

Specialty: Gastroenterology

Office locations: Camarillo, Oxnard

Most recent review: 1 week ago New
4.9 out of 5
684 Ratings
319 Comments

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.

4.9 out of 5
684 Ratings
319 Comments

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.

Staff was so kind. From check in to check out procedure quick and smoorh.

Rated 5 out of 5 stars
(1 week ago) Oct-2026

Very educated / knowing her field of expertise.

Rated 5 out of 5 stars
(1 week ago) Oct-2026

Thank you so much doctor.

Rated 5 out of 5 stars
(1 week ago) Oct-2026

The Dr. and the entire staff was absolutely incredible!

Rated 5 out of 5 stars
(2 weeks ago) Oct-2026

As always, the cleaning out process is awful but the colonoscopy procedure was great! Thank you Dr. Simon and all the nurses who made it a pleasant experience.

Rated 5 out of 5 stars
(2 weeks ago) Oct-2026

She has such a comforting personality along with being a smart doctor.

Rated 5 out of 5 stars
(3 weeks ago) Oct-2026

Best gastroenterologist out there.

Rated 5 out of 5 stars
(1 month ago) Oct-2026

Love her!!

Rated 5 out of 5 stars
(1 month ago) Sep-2026

My first visit with Dr. Simon went very well. Very friendly, professional and patient to listen with zero rush!

Rated 5 out of 5 stars
(1 month ago) Sep-2026

Made me feel welcomed.

Rated 5 out of 5 stars
(1 month ago) Sep-2026