Gregory K. Johnson, M.D.
Specialist · Haverhill, MA
Gregory K. Johnson, M.D. is a specialist with a practice address in Haverhill, Massachusetts, and NPI 1922049402, issued on Jun 8, 2006. Check the license (Massachusetts 76547, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory K. Johnson
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- 76547 MA
Self-reported in NPPES; status is on the state search - Practice location
- 288 Groveland St, Haverhill, MA 01830
- Phone
- (978) 373-3851
- Enumerated
- Jun 8, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (978) 521-6542
- Medicaid ID
- 3097391 MA
- Medicare enrollment
- Enrolled (PECOS I20050428000384); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 1984
- Entity
- Type 1 · individual
8 nearest specialist records → All 1,096 in Massachusetts → Look up another NPI →
Also registered at 288 Groveland St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Donald Bartlett, P.A.Medical Physician Assistant1073543260
- Barry Bickley, MDSpecialist1568456457
- Bernard Brady, M.D.Orthopaedic Surgery Physician1043259575
- Robert Condon, D.C.Chiropractor1457470130
- Ping Cui, M.D.Geriatric Psychiatry Physician1558363564
- Pamela Jones, M.D.Orthopaedic Hand Surgery Physician1871530402
Verify Gregory K. Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 76547Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average specialist in 2024
130 Medicare Part D claims for 68 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin34 claims
- Diclofenac Sodium32 claims
- Celecoxib24 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Mass General Brigham Community Physicians IncNorth Andover, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory K. Johnson among 1,096 specialist records in Massachusetts
Gregory K. Johnson, M.D. is one of 1,096 specialist records with a practice address in Massachusetts. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 69% newer
- In a Medicare fileYes · 15% of these records are
- In the CMS Doctors and Clinicians fileYes · 12% of these records are
- Graduated1984 · median 1989 among the 128 with a school on file
- Record last updated2026 · 82% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in Massachusetts
There are 1,096 specialist records in Massachusetts.
All 1,096 in Massachusetts → Every provider in Haverhill → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Barry Bickley, MDHaverhill, MA 018301568456457
- Jamie Galvin, PTAHaverhill, MA 018301588079610
- Susan Wilson, L.M.T.Haverhill, MA 018301063611978
- Bethany Krister, M.SP.ED.Haverhill, MA 018321568285104
- Crissy Hadley, LMTGeorgetown, MA 018331154672236
- Shilpa Deshmukh, M.DDracut, MA 018261326386822
- Brianna JanesHaverhill, MA 018351730946377
- Marcia Lipski, MDHaverhill, MA 018351760436018
Common questions
What is Gregory K. Johnson, M.D.'s NPI number?
Gregory K. Johnson, M.D.'s National Provider Identifier (NPI) is 1922049402, issued on Jun 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory K. Johnson, M.D. located?
The NPPES record lists a practice address at 288 Groveland St, Haverhill, MA, 01830. Phone: (978) 373-3851. Providers update this record themselves, so call before visiting.
How can I verify Gregory K. Johnson, M.D.'s license?
NPPES lists Massachusetts license number 76547, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory K. Johnson, M.D. prescribe under Medicare Part D?
In 2024, Gregory K. Johnson, M.D. had 130 Medicare Part D claims for 68 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.