Contact Us

The office hours of the American Diabetes Association's New York City office are:

  • Monday – Friday: 8:30 a.m. to 5:00 p.m.
  • Saturday & Sunday: Closed

To reach staff members by phone, please call 212-725-4925. Wait for the prompt and then enter the appropriate extension from the listings below. You are also welcome to email staff with any questions or comments you may have.


James Sheridan
Regional Vice President, Greater New York
ext. 3421

Helene Velazquez
Director, Community Health Strategies
ext. 3408

Daphney Leveille-Quiñones
Manager, Community Health Strategies
ext. 3438

Doris Del Valle
Associate Project Manager - EXPO, Tour de Cure
ext. 3420

Nancy Nwaifejokwu
Associate Manager, Office Administration
ext. 3407

Stacy Dieter
Corporate Development Officer
ext. 3401

Stephanie Yanes
Development/Camp Manager
ext. 3567

Additional Greater New York Area Locations

Long Island NY
362 RXR Plaza
Uniondale, NY 11556