Dr. Karen Simon, MD | Oxnard, CA | Gastroenterology

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Dr. Karen Simon is a gastroenterologist with 25 years of experience treating digestive system disorders. They earned their medical degree from Northwestern University Feinberg School of Medicine and completed their residency at Cedars Sinai Medical Center. Dr. Simon speaks English and brings extensive expertise to their practice in gastrointestinal medicine.

Dr. Simon practices at Saint Johns Regional Medical Center with locations in Oxnard and Camarillo, California. They specialize in treating conditions such as colon polyps, diverticular disease, and diverticulosis. Their procedural expertise includes performing colonoscopies and lower GI endoscopy with sedation services. Patients have given Dr. Simon an average rating of 4.2 stars for their care.

AI-generated from data on this provider profile.

accepting new patients
4.2

44 Ratings
25 years of experience
61 insurance plans accepted
speaks English
Cedars Sinai Medical Center
31 written reviews
1 award
1 specialty
12 areas of expertise
1 board certification
1 hospital affiliation
2 office locations

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me

Based on patient feedback. Read the reviews

Dr. Simon's Ratings and Reviews

4.2

44 Ratings with 31 written Reviews

Average Wait Time 15 Minutes

How was your appointment with
Dr. Simon?

Patients’ Perspective

Gave an accurate diagnosis: (27) Did WellNeeds Improvement (4)
Had a good bedside manner: (27) Did WellNeeds Improvement (6)
Spent time with me: (27) Did WellNeeds Improvement (6)
Provided follow-up after the visit: (24) Did WellNeeds Improvement (5)
Flexible scheduling: (21) Did WellNeeds Improvement (5)
Saw me in a timely manner: No Ratings
Staff was courteous: No Ratings

Patients express high satisfaction with Dr. Karen Simon's attentive and compassionate care, noting her professionalism, excellent communication skills, and effective treatment recommendations, which contribute to a comfortable and positive experience. Many reviews highlight her ability to listen carefully, her friendly and supportive demeanor, and her thoroughness in discussing medical issues, which helps patients feel at ease and valued. Conversely, some patients report frustration with the office's appointment scheduling system and communication challenges, finding it difficult to secure timely appointments or receive callbacks from the support staff. Despite these administrative issues, patients remain committed to Dr. Simon due to her exemplary care and dedication.

AI-generated from the text of patient reviews

44 ratings & reviews

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Showing 1 to 10 of 31 reviews

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Very thoughtful. Attentive to my issues. Friendly. Felt she listened to what I had to say.

March 3rd, 2026

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Great Experience!

March 3rd, 2026

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Dr Simon was very kind and easy to talk to. I really appreciate her bedside manner, as well as her thoroughness in discussing my symptoms.

March 3rd, 2026

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I called yesterday hoping to get an appointment and was so surprised to be able to see her today. Dr. Simon is so easy to communicate with and I felt instantly relieved with her knowledge and caring personality. I would highly recommend her.

December 2nd, 2025

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I appreciated the information that Dr Simon provided me with regarding the new treatment for hemorrhoids. She was very helpful and was going to give me her assistant‘s extension but I guess she might have forgotten because I didn’t get it this morning. Would appreciate receiving it. Thank you, Sharon Grote

September 5th, 2025

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Dr Simon always makes me feel very comfortable when I discuss my health concerns. She’s very supportive and professional.

May 27th, 2025

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I really like Dr. Simon. She She is friendly, professional, informative, and set me at ease. My experience with all the office staff was equally positive. I will recommend Dr. Simon to my family and anyone seeking a GI specialist.

February 13th, 2025

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Very thorough. Listens and explains things well. Communicates with my other doctors on overall body system.

February 13th, 2025

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Since this office got this new service to answer their calls and make appointments it has been very difficult to make an appt from you can’t been seen for 6 months and they can’t make the appt you have to call back and then their already booked again.left a message to have nurse or Dr call me back. They never got the message Dr Simon always calls back the only reason I’m staying with this office is because cause Dr Simon She is the best Dr I have found and yes she listens to you and allow you to also have input

February 11th, 2025

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Professional, courteous and an excellent listener. She carefully listens to your issues and asks insightful questions and then makes excellent recommendations for your healing.

January 30th, 2025

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Unio Specialty Care - Gastroenterology

1200 W Gonzalez Rd Ste 100Oxnard, CA 93036

Tel: (805) 946-2419

Unio Specialty Care - Gastroenterology

4009 Mission Oaks Blvd # ACamarillo, CA 93012

Tel: (805) 312-9560


Dr. Karen Simon, MD	Ashley Anderson, APRN	Ji Soo Choi, APRN	Chimdi Mfebe, APRN
Gastroenterology	Gastroenterology	Gastroenterology	Gastroenterology
Accepts New Patients	Accepts New Patients	Accepts New Patients	Accepts New Patients
4.2 (44 Ratings)	0 (0 Ratings)	0 (0 Ratings)	0 (0 Ratings)
25 Years of Experience
No Virtual Visit Option	Virtual Visit Available	Virtual Visit Available	Virtual Visit Available
Speaks English	Speaks English	Speaks English	Speaks English
Oxnard , CA	SACRAMENTO , CA	SACRAMENTO , CA	Little Rock , AR
Med School: Northwestern University The Feinberg School Of Medicine	Med School: East Tennessee State University - Quillen College of Medicine	Med School: New York University	Med School: Chamberlain University College of Nursing
Current Profile	View Profile	View Profile	View Profile

Search for your insurance and plan

Gastroenterology

Acid Reflux Disease (Gastroesophageal Reflux / GERD)
Check-up
Constipation
Heartburn
Hepatitis C
Immunization
Irritable Bowel Syndrome (IBS)
Physical
Ulcerative Colitis
Vaccination
Weight Loss
Weight Loss (non-surgical)

MEDICAL LICENSE

Medical Doctor, California, 2026, Active

EDUCATION & TRAINING

Residency

Cedars Sinai Medical Center

Medical School

Northwestern University The Feinberg School Of Medicine

Northwestern University Feinberg School Of MedicineGraduated in 2001

Dr. Micha Rojany, MD
Gastroenterology
26 Years Exp | Oxnard, CA
(42)
Dr. Anna Nicole Skay, MD
Gastroenterology
15 Years Exp | Simi Valley, CA
(1)
Dr. Rimma Shaposhnikov, MD
Gastroenterology
25 Years Exp | West Hills, CA
(33)
Dr. Mayur Ramnik Trivedi, MD
Gastroenterology
24 Years Exp | Thousand Oaks, CA
(13)
Dr. Adebambo Oladele Ojuri, MD
Gastroenterology
42 Years Exp | Murrieta, CA
(21)
Dr. Saleem A Desai, MD
Internal Medicine
34 Years Exp | Northridge, CA
(40)
Dr. Steven Alan Kind, MD
Gastroenterology
| Thousand Oaks, CA
(17)
Dr. Manoj Dayal Aswani, MD
Internal Medicine
32 Years Exp | Thousand Oaks, CA
(18)
Dr. Mona Rezapour, MD
Gastroenterology
14 Years Exp | West Hills, CA
(4)
Dr. Kumar Subodh Desai, MD
Gastroenterology
22 Years Exp | Thousand Oaks, CA
(48)

Which hospitals is Dr. Karen Simon affiliated with?: Dr. Karen Simon is affiliated with Saint Johns Regional Medical Center.
Does Dr. Karen Simon accept virtual/telehealth appointments?: Dr. Karen Simon has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
How can I make an appointment with Dr. Karen Simon?: You can find contact information for Dr. Karen Simon here on Vitals.
What languages does Dr. Karen Simon speak?: Dr. Karen Simon speaks English.
Does Dr. Karen Simon accept my insurance?: You can see the insurance plans that Dr. Karen Simon accepts on their Vitals profile.

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