Gregory K. Johnson, M.D.
NPI 1922049402ActiveIndividual· Specialist· Haverhill, MA
Specialist (M.D.) in Haverhill, Massachusetts, trained at Columbia University College of Physicians and Surgeons (class of 1984). 229 Medicare patients in 2024, $69,049 paid; all of their 130 Part D prescriptions were generic.
Overview
| NPI | 1922049402 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 8, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | 76547 | MA |
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) | Enrolled Practitioner - Orthopedic Surgery (MA); Practitioner - Orthopedic Surgery (NH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 229 |
|---|---|
| Services billed | 1,528 across 69 procedure codes |
| Paid by Medicare | $69,049 |
Part D prescriptions in 2024
| Prescriptions (claims) | 130 · 144 30-day fills |
|---|---|
| Patients | 68 |
| Total drug cost | $1,519 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Columbia University College of Physicians and Surgeons |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Orthopedic Surgery |
Medical group
- Mass General Brigham Community Physicians IncWatertown, MA · 428 clinicians
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