| Business | Phone |
| County Seat Chiropractic Office 639 Old Country Rd, Riverhead 11901 | (631) 369-9218 |
| Aquebogue Health Chiropractic 487 Main Rd, Riverhead 11901 | (631) 722-4425 |
| David S Bagshaw Dc 508 Main Rd, Riverhead 11901 | (631) 722-5565 |
| Essential Chiropractic 1149 Route 58, Riverhead 11901 | (631) 208-1438 |
| Hallmark Chiropractic Office 633 Roanoke Ave, Riverhead 11901 | (631) 727-3795 |
| Riverhead Chiropractic Office 160 Old Country Rd, Riverhead 11901 | (631) 727-7200 |