Keenan Mahan, MD, MBA
NPI 1104387158ActiveIndividual· Emergency Medicine· Newton, MA
Emergency Medicine (MD, MBA) in Newton, Massachusetts, trained at Harvard Medical School (class of 2019). 706 Medicare patients in 2024, $105,047 paid; nearly all of their 116 Part D prescriptions were generic (90%).
Overview
| NPI | 1104387158 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD, MBA |
| Sole proprietor | No |
| NPI issued | Mar 30, 2019 |
| Last updated in NPPES | Nov 4, 2024 |
| Certified by provider | Nov 4, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 290245 | MA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Emergency Medicine (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 706 |
|---|---|
| Services billed | 913 across 29 procedure codes |
| Paid by Medicare | $105,047 |
Part D prescriptions in 2024
| Prescriptions (claims) | 116 · 119 30-day fills |
|---|---|
| Patients | 88 |
| Total drug cost | $4,473 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | Harvard Medical School |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Emergency Medicine |
Medical group
- Mass General Brigham Medical Group Northern Massachusetts IncDanvers, MA · 827 clinicians
Hospital affiliation
- North Shore Medical Center -Salem, MA
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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