Suffolk County Dept of Health Services Div of Comm Mental Hyg Riverhead MMTP 300 Center Drive, Riverhead, NY 11901 631-852-2680
Seafield Services Inc OP-Alcoholism and SA Services 212 West Main Street, Riverhead, NY 11901 631-369-7800
Family Servs League-Suffolk County Inc Chemical Dependency Outpatient 400 West Main Street, Suite 300, Riverhead, NY 11901 631-369-0104
Stony Brook Medicine Quannacut Outpatient Services 905 East Main Street, Riverhead, NY 11901 631-369-8966