Gregory K. Johnson, M.D.

Primary specialty

SpecialistTaxonomy code 174400000X

License

76547 Issued in MA

Practice address

288 Groveland St
Haverhill, MA 01830-6669

Phone

(978) 373-3851

Fax

(978) 521-6542

NPI assigned

Jun 8, 2006

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in MA, NH2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Specialty

Orthopedic Surgery

Education

Columbia University College of Physicians and Surgeons, 1984

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Mass General Brigham Community Physicians IncGroup PAC ID 1759273436, 430 clinicians

Practice addresses (Care Compare)

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: johnson.gregory.pma@direct.partners.masshiway.net

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Mass General Brigham Community Physicians Inc.

  • Internal Medicine Physician
  • Haverhill, MA
  • NPI 1891112637
  Medicare reassignment Care Compare group NPD
• Mass General Brigham Medical Group Northern Massachusetts Inc

  • Emergency Medicine Physician
  • Salem, MA
  • NPI 1588606123
  Medicare reassignment NPD
• Mass General Brigham Medical Group, Inc.

  • Internal Medicine Physician
  • Salem, NH
  • NPI 1083360200
  Medicare reassignment NPD
• Mass General Brigham Community Physicians Inc

  • Cardiovascular Disease Physician
  • Medford, MA
  • NPI 1548638265
  NPD
• Pentucket Medical Associates, LLC

  • Internal Medicine Physician
  • Haverhill, MA
  • NPI 1609872886
  NPD
• Mass General Brigham Community Physicians Inc.

  • Internal Medicine Physician
  • Concord, MA
  • NPI 1174545875
  NPD (past)
• Mass General Brigham Amsurg Inc.

  • Ambulatory Surgical Clinic/Center
  • Salem, NH
  • NPI 1275281370
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1149724800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1922049402",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "288 GROVELAND ST",
            "city": "HAVERHILL",
            "state": "MA",
            "postal_code": "018306669",
            "telephone_number": "978-373-3851",
            "fax_number": "978-521-6542"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "288 GROVELAND ST",
            "city": "HAVERHILL",
            "state": "MA",
            "postal_code": "018306669",
            "telephone_number": "978-373-3851",
            "fax_number": "978-521-6542"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "JOHNSON",
        "first_name": "GREGORY",
        "middle_name": "K.",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-08",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "174400000X",
            "taxonomy_group": "",
            "desc": "Specialist",
            "state": "MA",
            "license": "76547",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "3097391",
            "state": "MA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Allison Nicole Jenkins, LMHC
• Sarah J Jensen, NP
• Yoon Hwan Edward Jeong, DMD
• Ashley Jewell, THERAPEUTIC MENTOR
• Emilio Antonio Jimenez Colon, D.M.D
• Joseph Johnson
• Angela Jolliffe
• Pamela L Jones, M.D.
• Ronald Charles Jordan Jr.
• Joseph a. Cardarelli, Jr., D.M.D., P.C.

• Specialist in Haverhill, MA
• Providers in Haverhill, MA by specialty
• Specialist in Massachusetts

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.