An affordable alternative to the emergency room, the Massachusetts General Hospital Medical Walk-In Unit provides quick and convenient urgent care for adults.
- Contact the Medical Walk-In Unit at 617-726-2707
The Medical Walk-In Unit offers another care option for patients who are unable to see their regular physician, are without a regular physician or are visiting the Boston area. All patients of the Medical Walk-In Unit receive a comprehensive evaluation and treatment of non-life-threatening illnesses and injuries. Patients are seen on a first-come, first-served basis, with extremely urgent cases receiving priority attention.
Services
Our physicians are all affiliated with Harvard Medical School and are members of clinical departments and divisions at Mass General. In addition to diagnosing and treating adult urgent medical problems of all types, the Medical Walk-In Unit also offers:
- Nebulizer therapy for asthma flares
- Blood work and EKGs authorized by Mass General physicians
- Minor dressing changes
- Blood pressure checks
- Blood sugar checks
- Oxygen saturations
- Emergency contraception
- Pregnancy tests
- TB testing and follow-up readings
- Flu, pneumococcal, B12 and school immunizations
- School and employment physicals
Patients can walk-in to receive care or call ahead with specific questions.
Hours of Operation
The Medical Walk-In Unit is open every day except Thanksgiving and Christmas.
- Monday - Friday, 8:30 am to 8:00 pm
- Weekends and holidays, 9:30 am - 4:00 pm
If we are experiencing a high patient volume, the unit may close early. If possible, arrive early and register in advance.
Insurance
Charges for service are similar to the costs you would incur for an appointment with your primary care physician. The Medical Walk-In Unit accepts most major insurance carriers, managed care plans and Medicaid. If your health plan requires authorization from your primary care physician prior to receiving care, please arrange for your physician’s office to send a referral. Copayments are expected at the time of service.
The Medical Walk-In Unit provides medical care to patients regardless of income or insurance coverage. Uninsured or underinsured patients might also be eligible for financial assistance through Mass General’s Office of Patient Financial Services. Please contact 617-726-2707 for more information.


