GI Doctor & Gastroenterologist in Berkeley - Unio Specialty Care
Gastroenterology • Berkeley, CA • Since 2011 • 1 location in Berkeley (2999 Regent St, Suite 701) locations
About
Summary: Unio Specialty Care is a multi-specialty physician group in California focusing on urology, gastroenterology, and related cancers, with multiple offices including locations in San Diego and Torrance. They emphasize integrated clinical culture, access to the latest clinical research and minimally invasive treatments, and partnerships with leading practices. The organization operates 3 U.S. offices (HQ in Torrance, plus San Diego locations) and has grown since 2011. If you’re specifically seeking a GI doctor or gastroenterologist in Berkeley, note that Unio’s listed California offices are in Southern California (Torrance and San Diego areas) and there is no Berkeley location indicated on their site. For GI care in Berkeley, you may want to search for local GI specialists in the East Bay or consider nearby Unio gastroenterology offices in Southern California if travel is feasible.
Clinic Type
Gastroenterology
Address
2999 Regent St, Suite 701, Berkeley, CA 94705
Phone
(510) 244-1651
research@insitedigestive.com
Opening Hours
Office Hours (Berkeley): not fully specified on page; general contact and scheduling information available
Services Offered
Team
Insurance & Payment
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Languages Spoken
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FAQs
Is the Berkeley location accepting new patients?
Yes, the Berkeley location is welcoming new patients and accepts most major insurance plans.
What procedures are offered?
Colonoscopy, upper endoscopy, flexible sigmoidoscopy, capsule endoscopy, hemorrhoid treatment, SIBO testing, etc.
Do I need a referral to see a gastroenterologist in Berkeley?
It depends on your insurance plan. Some require a referral from your primary care physician, while others do not. Our staff will verify your benefits and let you know during scheduling.
Is this facility covered by my insurance?
Most visits and procedures are covered, though medical benefits vary by plan. We’ll confirm your coverage and out-of-pocket costs before your appointment.
How do I prepare for my first visit?
Please bring your insurance card, photo ID, list of medications, and any previous test results or imaging. No fasting is necessary unless a procedure is scheduled.
What services are offered for colon cancer screening?
Yes—our Berkeley team offers full colon cancer screening services, including colonoscopy and follow-up care. We adhere to current guidelines and recommend screening starting at age 45, or earlier for those at higher risk.
Social Media
Photos
What Patients Say
Overall sentiment across review platforms: very positive
- rater8: 4.90 out of 5 stars (287 ratings (specific to the San Pablo/Berkeley group location))
- 4doctors.net: 5.0 stars (11 user reviews (specific to the Berkeley listing))
Patients praise
- Physicians are described as kind, knowledgeable, and professional
- Excellent patient-centered care with staff and doctors who make patients feel heard
- Clear communication of complex medical information and procedure preparation
- Efficient, pleasant, and smooth patient experience during procedures and appointments
Common complaints
- Difficulty with parking (street parking is difficult, garage parking is expensive)
- Inconsistent communication from support staff regarding scheduling and prescription management
- Occasional reports of delays in lab result turnaround times
"If there were ten stars available, Dr. Kogan would deserve them all. He is that fantastic!"
— rater8 patient review"All very pleasant, I arrived early and was seen on time, we worked through all my questions received a calendar when to start fasting..."
— 4doctors.net patient review"Great doctor did my colonoscopy without sedation... and he did an amazing job. Wonderful personality caring and..."
— uniospecialtycare.com patient reviewSynthesized from public review platforms as of Jul 10, 2026 — sources: [1][2][3][4].
In the News
- Dr. Courtney B. Sherman, MD - Gastroenterologist in Berkeley, CA — May 14, 2026
- Francis Yao, MD - Hepatology, Gastroenterology | UCSF Health — Apr 3, 2026
- Unio Specialty Care Affiliates with Comprehensive GI Care, Expanding Access to Digestive Health Services in Greater Long Beach/Orange County | Unio Specialty Care — Nov 17, 2025
- Dr. Silvia M. Villagomez, MD - Gastroenterologist in Oakland, CA — May 14, 2026
- Dr. Ayesha Zahiruddin, MD - Gastroenterologist in San Leandro, CA — May 14, 2026
Information sourced from the clinic's website as of July 10, 2026.
More gastroenterology clinics in Berkeley
Summary: Sutter East Bay Medical Group (SEBMG) in Berkeley, CA, lists Gastroenterology as a specialty with an Advanced Interventional Gastroenterology physician in Berkeley, CA. The group operates primarily in Oakland and Berkeley, with HQ at 350 Hawthorne Ave, Oakland, CA 94609, and another office in Berkeley, CA 94577. The site also notes active recruiting for Gastroenterology and related multi-specialty ambulatory care initiatives. If you’re specifically seeking gastroenterology care in Berkeley, SEBMG offers an Advanced Interventional GI physician in the Berkeley location and supports a broader Oakland/Berkeley network.
Summary: Gastroenterology services are part of the Berkeley Outpatient Center, a joint effort between John Muir Health and UCSF Health in Berkeley, CA. The center provides a wide range of care under one roof, including urgent care, primary care (women’s health), imaging, and specialty services, with access to leading specialists from both organizations. While the summary highlights general offerings and the partnership, specific details on gastroenterology services (providers, procedures, or scheduling) are not listed on the page. For gastroenterology focus, consider contacting the center at (510) 985-5100 or visiting johnmuirhealth.com/berkeley for more information on specialists, appointments, and what gastroenterology care is available.
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