Dr. Timothy B. Sullivan is a psychiatrist in Staten Island, New York and is affiliated with multiple hospitals in the area, including Staten Island University Hospital at Northwell Health and Long Island Jewish Medical Center at Northwell Health. He received his medical degree from Geisel School of Medicine at Dartmouth and has been in practice for more than 20 years. Dr. Timothy B. Sullivan has expertise in treating dementia, among other conditions - see all areas of expertise. Dr. Timothy B. Sullivan accepts Medicare, Aetna, Cigna, Blue Cross, United Healthcare - see other insurance plans accepted. Dr. Timothy B. Sullivan is highly recommended by patients.