| Department | Phone Number | Hours |
| Beneficiary Call Center (Ohio & West Virginia) |
1-(800) MEDICARE (Toll-Free)
(800) 633-4227 |
24 hours a day |
| TTY |
(877) 486-2048 (Toll-Free) |
|
| Provider Contact Center |
(866) 332-7025 (Toll-Free) |
8:30 a.m. - 4:30 p.m. EST |
| IVR |
(877) 567-9232 (Toll-Free) |
|
| Fax |
(614) 473-6805 |
|
| TTY |
(877) 391-9739 |
|
| Electronic Data Interchange Technical Support |
(866) 308-5438 (Toll-Free) |
7:30 a.m. - 4:30 p.m. EST |
| Fax |
(614) 473-6802 |
|
| Fraud and Abuse Hotline |
(888) 619-5316 (Toll-Free) |
8 a.m. - 4 p.m. EST |
| Medicare Secondary Payer |
(866) 308-5442 (Toll-Free) |
8 a.m. - 3:30 p.m. EST |
| Fax |
(614) 473-6813 |
|
| Medicare Community Education Administrators: Meeting/Seminar Requests |
(877) 567-9232 (Toll-Free) Press 7 |
8 a.m. - 4:30 p.m. EST |
| Provider Enrollment Support Line |
(866) 308-5439 (Toll-Free) |
8 a.m. - 4 p.m. EST |
| Fax |
(614) 473-6811 |
|
| Telephone Reopenings for Claims |
(866) 308-5441 (Toll-Free) |
9 a.m. - 12 p.m. and
1 p.m. - 3 p.m. |