Quick answers
- Where does Gregory Johnson see patients?
- Medicare's clinician data lists 3 practice locations, including North Andover, MA, Haverhill, MA and Lawrence, MA. Call before your visit to confirm the address.
- What is Gregory Johnson's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Gregory Johnson accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory Johnson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Gregory Johnson?
- (978) 725-0900, as listed in official Medicare / NPI Registry data.
- What is Gregory Johnson's NPI number?
- 1922049402. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Gregory Johnson is enrolled with Medicare (CMS data updated 2026-10-02).
- 231 Sutton StNorth Andover, MA 01845 (978) 725‑0900
- 288 Groveland StHaverhill, MA 01830 (978) 373‑3851
- 500 Merrimack StLawrence, MA 01843 (978) 557‑8900
Group practices
Medicare enrollment lists Gregory Johnson as a member of this group (CMS data updated 2026-10-02).
- Mass General Brigham Community Physicians Inc428 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Massachusetts
Clinicians with the same Medicare primary specialty in Massachusetts — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Columbia University College Of Physicians And Surgeons |
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922049402 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians