Fairfield Location | Primary Care - NorthBay Health
Internal Medicine • Fairfield, CA
Clinic Type
Internal Medicine
Address
2470 Hilborn Rd, Fairfield, CA 94534
Phone
(707) 646-5500
feedback@northbay.org
Opening Hours
Mon – Fri: 8 a.m. – 5 p.m.
Services Offered
Team
Insurance & Payment
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Languages Spoken
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FAQs
What types of primary care doctors are available?
Family medicine, internal medicine, and pediatrics.
Social Media
Photos








What Patients Say
Overall sentiment across review platforms: mixed
- Birdeye: 3.3 out of 5 stars (based on 49 reviews) (49)
- NorthBay Health official provider directory: 4.8 out of 5 stars (343 ratings for providers in this location)
Patients praise
- Professional, thorough, and knowledgeable medical providers
- Friendly and attentive nursing and support staff
- Positive patient interactions regarding clear communication of health issues
- Clean and welcoming facility environment
- Convenience of extended hours in some instances
Common complaints
- Administrative and bureaucratic difficulties (e.g., appointment scheduling, cancellation, lab coordination)
- Difficulties with check-in/checkout processes and wait times
- Issues with understaffing affecting patient access and service quality
- Occasional billing or payment processing limitations
"Tremendous service and quality care. I truly recommend Northbay"
— Birdeye review"I really like Dr. Brennan and NP Collins. However, 2023 has been a series of canceled appointments and horrible missteps in the beaurocracy between the lab, getting information to the medical practitioners... This office is grossly understaffed"
— Online review"I was very impressed with the the way he spent time with me and explained in detail about the issue and examination including the test..."
— MapQuest reviewSynthesized from public review platforms as of Jul 10, 2026 — sources: [1][2][3][4].
In the News
- Dr. Jan Winetz, MD - Internal Medicine Physician in Fairfield, CA — May 14, 2026
- NorthBay opens urgent, primary care facilities in Rio Vista, Benicia | Benicia-Vallejo | dailyrepublic.com — Feb 11, 2026
- Sharon L. Collins, NP - Nurse Practitioner in Fairfield, CA — May 14, 2026
- NorthBay opens primary, urgent care clinic in Winters | News | dailyrepublic.com — Aug 1, 2025
- Dr. Kathleen Kim, DO - Family Medicine Doctor in Dixon, CA — May 14, 2026
Information sourced from the clinic's website as of July 10, 2026.
More internal medicine clinics in Fairfield
Northeast Medical Group (NEMG) is a Yale New Haven Health System-affiliated nonprofit medical foundation with 4 offices in Connecticut (Bridgeport, Trumbull, Stamford, and Stratford). It offers internal medicine among its services and specialties (family medicine, pediatrics, radiology, walk-in care, and other specialties). NEMG emphasizes access to the resources of YNHHS hospitals and affiliated care teams (e.g., Yale New Haven Hospital, Bridgeport Hospital, Greenwich Hospital, and more). For internal medicine specifically, NEMG provides board-certified internal medicine physicians and related care through its Bridgeport, Trumbull, Stamford, and Stratford locations, with ongoing community-based practices and expansions. If you’re seeking an Internal Medicine provider for Fairfield, NEMG is part of the YNHHS network and can route patients to affiliated hospitals and specialists as needed. For precise internal medicine physician availability in Fairfield, contact NEMG or visit their site to view current providers and locations.
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See other internal medicine clinics in Fairfield, or search the full directory by insurance, ratings, and more.

