| Business | Phone |
| Personal Touch Billing Svc 44 Revonah Cir, Stamford 6905 | (203) 353-0822 |
| Nsw Physicians Billing 316 Courtland Ave, Stamford 6906 | (203) 348-3142 |
| Open Business Exchange Inc 1200 High Ridge Rd, Stamford 6905 | (203) 609-0357 |
| National Out Patient Resource 46 Southfield Ave, Stamford 6902 | (203) 323-2877 |
| Medical Claims & Billing Svc 55 Old Long Ridge Rd, Stamford 6903 | (203) 329-8195 |