| Department | Phone Number |
| Sumner Regional Medical Center – Main Line | (615) 328-8888 |
| Administration | (615) 328-6695 |
| Admitting/Registration | (615) 328-6500 |
| Billing & Patient Accounts | (615) 328-5500 |
| Emergency Department | (615) 328-5750 |
| Information Desk | (615) 328-5518 |
| Human Resources | (615) 328-6173 |
| Marketing | (615) 328-6605 |
| Medical Records | (615) 328-5524 |
| Patient Information | (615) 328-5518 |
| Patient Registration | (615) 328-5700 |
| Physician Referrals | (615) 230-0324 |
| Public Relations | (615) 328-5165 |
| Volunteer Services | (615) 328-5517 |