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For Questions about Your Healthcare

If you need medical care right away, call 911 or go to your local emergency room. For issues that need a same-day response, you can send a message to your doctor’s office by going to MSK MyChart at MSKMyChart.mskcc.org. You can also call your healthcare provider’s office. If you don’t know their phone number, call 212-639-5500, and you will be transferred.

For Questions about Billing

If you need help with patient billing services or have financial questions, please see our information about who to contact.   

If you have a question about billing, you can also call 646-227-3378 in New York City, or call toll free outside New York City at 866-248-1274, Monday through Friday between 8:00 a.m. and 5:00 p.m. (Eastern time). We are closed between 12:30 p.m. and 1:30 p.m.. You may be put on hold because of high call volume.

For Questions about How to Pay Your Bill

There are 3 ways to pay your bills.

To pay bills from January 31, 2025, and earlier using VisitPay, you need to use the read-only version of MyMSK by going to my.mskcc.org. To pay bills from February 1, 2025, and after, use MSK MyChart.

You can also pay by phone. Please call 646-227-3378 in New York City, or call toll free outside New York City at 866-248-1274, Monday through Friday between 8:00 am and 5:00 pm (Eastern time). We are closed between 12:30 pm and 1:30 pm You may be put on hold because of high call volume. 

If you are not signed up to pay your bills with VisitPay, we will send you bills by mail. Please remember to include your payment slip with your payment. 

Payment address for hospital bills: Memorial Hospital General Post Office PO Box 21700 New York, NY 10087-6174

Payment address for physician bills: Memorial Sloan Kettering Cancer Center PBD General Post Office PO Box 26352 New York, NY 10087-6352

For Questions about your Doctor's Appointment