facebook pixel
We use cookies to improve your experience on our site. Please accept the Privacy Policy to continue.
Call for an appointment 1-844-NYC-4NYC

Executive Leadership

Christopher A. Roker, MBA

Chief Executive Officer

Lewis Marshall, MS, MD, JD

Chief Medical Officer

Lillian Diaz, RN, MBA, MS

Chief Nursing Officer

Nancy Moscoso

Chief Operating Officer

Zhishen Yang

Chief Financial Officer

Valerie St. Louis

Chief of Staff

Barbara Marrero

Chief Human Resources Officer

Cheryl Simmons-Oliver, JD, MBA, MS

Associate Executive Director

Dr. Usha Venugopal

Chief Quality Officer

Medical Leadership

Lewis Marshall, MD, Esq

Chief Medical Officer

Adrienne Birnbaum, MD

Emergency Medicine

Raji Mohammed, MD

Laboratory/Pathology Services

Akinola Fisher, MD

Ambulatory Care

Dimitris Giannaris, MD


Ashley Keys, MD


Alan Kantor, MD

Radiology/Imaging Services

Robert Pellecchia, MD, DDS

Dentistry, Oral & Maxillofacial Surgery

Shefali Khanna, MD


Carmen Sultana, MD


Wihren Dimitrov, MD


Sherry Melton, MD


Amy Hoffman, MD