Theresa Mack, MD, MPH

George Velasco, MD is a Internal Medicine provider with Mount Sinai Health System, treating patients in the New York area. Dr. Velasco is committed to compassionate, coordinated care that supports patients throughout the diverse communities we serve.

Jessie Fields, MD is a Internal Medicine provider with Mount Sinai Health System, treating patients in the New York area. Dr. Fields is committed to compassionate, coordinated care that supports patients throughout the diverse communities we serve.

From routine appointments to emergency services, it’s important to get the care you need—when you need it. But we understand you may be delaying your health needs over concerns about safety. At Mount Sinai, our doctors, nurses, and staff members are working continuously to ensure your safety so that you don't have to put your health on hold.