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Emergency Care


24-hour Emergencies

  • Cambridge: Dial 100 (campus phone) or 617-253-1212 (any phone)
  • Lexington: Dial 3333
  • Off campus: Dial 911

Referral Requirement

Urgent Care Line
TTY 617-258-0656


For life-threatening situations* or mental health emergencies, dial one of the MIT Medical emergency numbers below if you are on the MIT or Lexington campus. Ambulance service will be provided to MIT Medical or a nearby acute care hospital, depending on the situation.

Please program this number into your cellphone:

  • Emergencies—Cambridge campus: 617-253-1212

Examples of life-threatening emergencies include:

Urgent Care

If you have a medical problem that can’t wait (such as high fever, earaches, or sprains), or an urgent mental health problem, call 617-253-4481 for medical advice. A clinician may direct you to go straight to a hospital emergency room, or come to MIT Medical’s Urgent Care Service from 7 a.m.–11 p.m. Please call 617-253-4481 if you're not sure whether you should come in. For pediatric patients: During the hours that Urgent Care is open, call 617-253-4481 before coming in to find out if a pediatric clinician is available.

Please program this number into your cellphone:

  • Urgent Care—Cambridge campus: 617-253-4481

Related Links

Urgent Care


* MIT Medical will apply “The Prudent Layperson Standard” in reviewing claims for emergency room (ER) services. A prudent layperson refers to a clear-thinking adult with an average knowledge of health and medicine. The standard for ER claims is defined as emergency care for medical, maternity, or psychiatric emergencies that leads a prudent layperson to believe that a serious medical condition exists, or that the absence of medical attention will result in a threat to the person's life, limb, or sight. In other words, the person believes his or her health or life is in danger, and emergency medical intervention is needed.

In contrast, urgent care is a medically necessary treatment for illness or injury that would not result in further disability or death if not treated immediately. An urgent care illness or injury requires professional attention and treatment within 24 hours to avoid further complications. MIT Medical’s urgent care service is based on a first-come, first served basis, unless a need for emergency care is determined.

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