He has received a 5.0 out of 5 star rating by his patients. He honors Amerigroup, Blue Cross/Blue Shield, and HealthSmart, as well as other insurance carriers. Dr. Greenwald graduated from Albert Einstein College of Medicine of Yeshiva University and then he performed his residency at Montefiore Medical Center and a hospital affiliated with Albert Einstein College of Medicine. Dr. Greenwald is affiliated with North Shore University Hospital (NSUH), Long Island Jewish Valley Stream, and St. Francis Hospital. New patients are welcome to contact his office for an appointment.