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Physician Profile

Karen Simon, MD

Serving Patients in
Camarillo & Oxnard
Make an Appointment
(805) 983-0521

Recent News

inSite Digestive Health Care is proud to announce its newest location in Lancaster, CA with Dr. Jatinder Pruthi!

About Dr. Karen Simon

Dr. Karen Simon 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. 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.



Treatment Philosophy

Dr. Simon aims specifically to work with patients to discover the problem and develop a treatment strategy. She has a particular interest in Celiac Disease, Inflammatory Bowel Disease (IBD), and a passion for improving colorectal cancer detection.

She is dedicated to developing a relationship with patients by utilizing education and mutual information sharing.

Specialties and Services

General GI – interest in IBD (Inflammatory Bowel Disease)


ERCP (Endoscopic Retrograde Cholangiopancreatography)

Upper Endoscopy

Colon Cancer Screening

PEG Placement, Change and Removal (G-Tube)

Endoscopic Ultrasound

Office Location

Camarillo Office
4005 Mission Oak Blvd
Unit A
Camarillo, 93012
Phone: (805) 484-7921
Fax: (805) 388-5404

Oxnard Office
2241 Wankel Way, Suite A
Oxnard, CA 93030
Phone: (805) 983-0521
Fax: (805) 485-1484

Professional Publications

Simon K, et al. Multitarget Stool DNA Testing for Colorectal-Cancer Screening. The New England Journal of Medicine 370(14), 2014.