Keegan J. Ziemba, M.D.
NPI 1568751824ActiveIndividual· General Practice· Concord, NH
Opted out of Medicare from April 2025 to April 2027. General Practice (M.D.) in Concord, New Hampshire, licensed in VA, NY, OH and MA and other states, with an NPI issued in April 2011.
Overview
| NPI | 1568751824 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 6, 2011 |
| Last updated in NPPES | Mar 2, 2026 |
| Certified by provider | Mar 2, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| General Practice Primary | 208D00000X | 0101271796 | VA |
| General Practice | 208D00000X | 320959 | NY |
| General Practice | 208D00000X | 35.123674 | OH |
| General Practice | 208D00000X | 1014384 | MA |
| General Practice | 208D00000X | MD469713 | PA |
| General Practice | 208D00000X | TPME3162 | FL |
| General Practice | 208D00000X | 21260 | NH |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out Apr 1, 2025 – Apr 1, 2027 |
| Can order and refer | Yes |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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