Contact Us :
Phone Numbers
NorthBay Center for Primary Care - Call Center:
(707) 646-5500
NorthBay Center for Primary Care - Vacaville:
421 Nut Tree Rd, Vacaville CA 95687
NorthBay Center for Primary Care -Fairfield:
2458 Hilborn Rd, Fairfield CA 94534
NorthBay Center for Primary Care - Green Valley:
4520 Business Center Dr, Fairfield CA 94534
Office Hours
Call Center:
Mon – Fri: 7:30 a.m. – 5 p.m.
Office Hours:
Mon – Fri: 8 a.m. – 5 p.m.

Primary Health Care Services in Vacaville and Fairfield

Care you can trust.

NorthBay Healthcare's Center for Primary Care provides exceptional family practice, internal medicine and pediatric physicians close to your home with compassionate staff and access to an entire network of specialists, should you ever need one.

Our primary health care providers take that extra step to really get to know you, offering medical advice that fits your lifestyle. It's all part of NorthBay's mission: compassionate care, advanced medicine, close to home.

Care when and where you need it.

Our goal is to make health care easily accessible. We know that getting care when you need it is important to you so we offer same-day appointments and give you options for after-hours appointments for minor illnesses and injuries.

Care 'Til 8

While we still encourage appointments during regular hours for routine care like annual physicals, sometimes things happen. When you need to see someone for primary health care now, we're ready for you. Our Care 'Til 8 service is provided at our Center for Primary Care in Vacaville and on Hilborn Road in Fairfield and provides a lower-cost, more convenient alternative to our hospitals' emergency rooms, which are designed to care for patients with more serious medical problems. Both Care 'til 8 locations are open 12:30 p.m. to 8 p.m. on the weekdays. The Fairfield location is also open from 9 a.m. to 8 p.m. on the weekends. Hours are subject to change during holidays.

NorthBay Urgent Care & Instant Visits

NorthBay Urgent Care offers immediate medical attention for medical conditions that are not life threatening. It's the perfect alternative to the Emergency Room (shorter waits and lower cost) or when you can't get in to see your regular doctor. We treat a wide range of conditions from common colds and flu to stitches and broken bones. Now you may not even need an appointment thanks to our new primary care service — Instant Visits. Get treatment for straight forward conditions from providers within 2 hours without leaving the comfort of your home or work. Our office at the Nut Tree Plaza in Vacaville is open from 9 a.m. until 7 p.m. seven days a week and on most holidays. Instant Visits are available from 9 a.m. to 6 p.m. when NorthBay Urgent Care is open. Same day appointments are available with the option to schedule online. Walk-ins are welcome.


Stay connected with your NorthBay care team with MyNorthBayDoc, our online portal that lets you communicate securely with your doctor, schedule appointments and review your health record, including lab reports.

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Care when and where you need it. Learn how you can find relief today with our extended hours or urgent care services.

A vector image of three test tubes in a holder with a clock above them. Below this image you can find the lab hours for all our primary care centers.

The lab hours for all our centers for primary care are as follows:


  • 8 a.m. – 11:30 a.m.
  • 12:30 p.m. – 4:15 p.m.


  • 8 a.m. – 12:30 p.m.
  • 1:30 p.m. – 4:30 p.m.

Green Valley:

  • 8 a.m. – 1 p.m.
  • 2 p.m. – 4:30 p.m.
What's new with the Center for Primary Care?

Get news you can use to stay healthy and get the most out of your medical group.

Three Convenient Locations Three Convenient Locations

Our Center for Primary Care in Vacaville is located on 421 Nut Tree Road.

Our Center for Primary Care in Fairfield is located on 2458 Hilborn Road.

Our Center for Primary Care in Green Valley is located on 4520 Business Center Drive, Fairfield.

Find the best doctor for you.

View providers specializing in primary health care services in Vacaville and Fairfield.

Find a Specialist

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