Gastroenterologist in Oxnard, CA | Colonoscopy & GI Care
Gastroenterology • Oxnard, CA
Clinic Type
Gastroenterology
Address
1200 W Gonzales Road, Suite 100, Oxnard, CA 93036
Phone
(805) 946-2416
research@insitedigestive.com
Opening Hours
8:00 am - 5:00 pm
Services Offered
Technology & Equipment
Insurance & Payment
Yes — we accept most major insurance plans. We’ll confirm your coverage prior to your visit.
Languages Spoken
—
Pricing
Current Offers
Accepting New Patients
FAQs
Do you accept new patients?
Yes—we are accepting new patients.
Do I need a referral to see a GI doctor in Oxnard?
(Duplicate question from page) Depending on your insurance plan, a referral may be required. Our team will verify your benefits when scheduling.
Is this clinic in-network with my insurance?
Yes — we accept most major insurance plans. We’ll confirm your coverage prior to your visit.
Awards & Accreditations
Social Media
Photos
What Patients Say
Overall sentiment across review platforms: positive
- Healthgrades (Dr. Karen Simon): 4.6/5 stars (133 reviews) (133)
- Vitals (Dr. Micha Rojany): 4.3/5 stars (42)
- Healthgrades (Dr. John Billesdon): 5.0/5 stars (14)
- Birdeye/Google (Ventura County Gastroenterology Medical Group): 4.7/5 stars (275)
- Vitals (Dr. Donald L. Miller): 4.8/5 stars
Patients praise
- Doctors described as caring, attentive listeners, and professional
- Staff generally perceived as friendly and helpful during visits
- Clear explanations of procedures (e.g., colonoscopy, EGD) and test results
- Effective diagnostic and treatment outcomes reported by many patients
Common complaints
- Difficulty scheduling appointments and long wait times for new patient visits
- Frustrations with office communication, including lack of callbacks and follow-up on procedures
- Occasional reports of feeling like a low priority due to insurance type (e.g., HMO)
"She is an extremely good listener and goes out of her way to ensure you get all of your questions answered."
— Healthgrades Review"He takes the time to explain the procedure and answer all my questions. Dr. Rojany makes sure I am comfortable and pain free..."
— Vitals Review"I have always received good quality care, but getting an appointment has always taken months."
— Demandforce ReviewSynthesized from public review platforms as of Jul 10, 2026 — sources: [1][2][3][4].
In the News
- Justin Michael Marasigan, DO | Gastroenterology | Oxnard, CA — Feb 18, 2026
- Dr. Karen Simon, MD - Gastroenterologist in Oxnard, CA — Jan 23, 2026
- Dr. Ashwinee Condon, MD - Gastroenterologist in Oxnard, CA — Jan 11, 2026
- Dr. Justin Marasigan, DO, Camarillo, CA | Gastroenterologist - Zocdoc — Jun 18, 2026
- Micha S. Rojany, MD | Gastroenterology | Camarillo, CA — Feb 17, 2026
Information sourced from the clinic's website as of July 10, 2026.
More gastroenterology clinics in Oxnard
Channel Islands Surgicenter, L.P. is a private physician-owned medical facility in Oxnard, California, offering surgical procedures across multiple specialties. While not listed here as a dedicated gastroenterology practice, it operates as a multi-specialty surgicenter with 4 offices in Oxnard and a small staff. Key details: - Location: Oxnard, CA (headquartered), with four listed addresses/offices in the Oxnard area - Industry: Medical practices; focuses on surgeries and procedures - Ownership: Private, physician-owned facility - Contact: main phone numbers: 805-485-1908, 805-485-5767 - Web presence: channelislandssurgicenter.com; modest monthly traffic - Workforce: 4 employees - Target audience: General surgical procedures; not specifically gastroenterology listed as a primary specialty in the provided details If you’re specifically seeking gastroenterology services in Oxnard, this page confirms the surgicenter as a general surgical facility rather than a dedicated GI practice. Consider contacting them directly to confirm whether they offer gastroenterology procedures or GI specialists onsite.
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