Memorial Sloan Kettering Cancer Center

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For Questions about Your Health Care

For any medical emergencies, please immediately contact your doctor's office by phone.
For routine matters regarding your health, telephone or e-mail the nurse in your doctor's office by using the "Compose Message" option on the "Messages" section of MyMSK.

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For Questions about a Hospital Bill and/or a Physician Bill

Please call toll free at 866-248-1274 or at 646-227-3378, Monday through Friday between 8:00 AM and 5:00 PM Eastern Time (closed between 12:30PM-1:30PM).

Payment address for Hospital billing:
Memorial Hospital
General Post Office
P.O. Box 26174
New York, NY 10087-6174 
  Payment address for Physician billing:
Memorial Sloan Kettering Cancer Center PBD
General Post Office
PO Box 26352
New York, NY 10087-6352 

For Questions about a Doctor's Appointment

Contact your doctor's office.

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For Questions about the MyMSK Website

First view our FAQs to determine if your question is answered there. If you still have questions about how to use the MyMSK website, you can do one of the following:

  • E-mail the Help Desk
  • Call the MyMSK Help Desk toll free at 800-248-0593 or at 646-227-2593, Monday through Friday between 9:00 AM and 5:00 PM Eastern Time.