| Business | Phone |
| R Bruce Mac Donald Phd 223 Roanoke Ave, Riverhead 11901 | (631) 369-5361 |
| Robert B De Vinney Phd 877 E Main St, Riverhead 11901 | (631) 727-5822 |
| Riverhead Counseling Svc 538 Washington St, Riverhead 11901 | (631) 727-8219 |
| John Klindienst 223 Roanoke Ave, Riverhead 11901 | (631) 727-1563 |
| Edwin F Sause 126 Meadow Ln, Riverhead 11901 | (631) 369-0005 |
| Transicion Counseling Center 30 E Main St, Riverhead 11901 | (631) 727-2667 |