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Chelmsford - Harvard Vanguard

228 Billerica Road
Chelmsford, MA 01824

To quickly connect with your provider’s office, use the Departments menu below for direct-dial phone numbers.

24/7 medical advice is always available by calling your doctor's office.

  • offering holiday weekends Urgent Care
    Same-day, Weekend, and Holiday Urgent Care

    We offer urgent care at many locations. View the hours for all of our urgent care sites.

  • pharmacy Pharmacy

    Pharmacy: Patients have access to Pharmacy services at 15 practice locations. Click here for more information or look below for site-specific hours.

  • getting here Directions

    DIRECTIONS: Click here for directions to the Chelmsford practice.

    PARKING INFO: Free parking is available on the premises.

    MBTA INFO: Take the LRTA "Route 129" bus that stops at our front door. 

    ACCESS: Our offices are handicapped accessible.

  • imaging Imaging

    IMAGING: Patients have access to general x-ray services at many of our practice locations, as well as specialized imaging services like ultrasound at some locations.  Click here for more information or look below for site-specific hours.

  • interpreter Interpreter

    Available upon request for any patient who has limited understanding of or does not speak English, and also for the hearing impaired. Click here for more information. 

  • lab Lab

    Laboratory: Patients have access to Laboratory services at many of our practice locations. Click here for more information or look below for site-specific hours.

  • Chelmsford Secondary2

The Harvard Vanguard Chelmsford practice offers adult primary care, pediatrics, family medicine (adults and children), obstetrics and gynecology, and a wide range of medical and surgical specialty care to residents of Lowell, Chelmsford, Billerica, Dracut, and other nearby cities and towns. We are conveniently located conveniently located on Route 129, just west of Route 3 in Chelmsford.

Our preferred hospital partners include Beth Israel Deaconess Medical Center, Mount Auburn Hospital, and New England Baptist Hospital. We continually strive to improve in every regard - operational and clinical - in order to better serve our patients.

Chelmsford Hours of Operation

Monday - Friday, 8:00am - 6:00pm
Saturday and Sunday, 9:00am - 2:00pm

Our Pharmacy is also open during the hours above.

Walk-in lab is available Monday - Friday, 8:00am - 6:00pm, Saturday and Sunday, 9:00am - 2:00pm.

The optical shop is open by appointment only, Monday - Friday, 8:30am - 5:00pm. Please call for an appointment.

Unless you have a confirmed appointment, we suggest you call ahead as hours may vary slightly by department. Thank you.

24/7 Medical Advice

Medical advice is available to patients by telephone 24 hours a day, 7 days a week. If you need medical advice after office hours, please call your doctor's office. Follow the phone prompts to be routed to our after-hours triage service staffed by nurse practitioners and physician assistants with access to your electronic medical record.

Weekend & Holiday Urgent Care

All patients have access to adult and pediatric weekend urgent care at our regionally located practices. Unless it is a life-threatening emergency (in which case you should call 911), you can use our weekend and holiday urgent care hours for most health-related situations.


Select a specialty to view phone number, fax number, and more information