Individual provider Active NPI

Gregory A. Johnson, MD

  • Internal Medicine Physician
  • Somerville, MA
National Provider Identifier
1942213509
Registry record updated Feb 18, 2021
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
151587 Issued in MA
Practice address
40 Holland St
Harvard Vanguard Medical Associates
Somerville, MA 02144-2705
Phone
(617) 629-6350
NPI assigned
Aug 14, 2006
Last updated
Feb 18, 2021By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Feb 18, 2021

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 151587 MA Primary

Addresses

Primary practice location

40 Holland St
Harvard Vanguard Medical Associates
Somerville, MA 02144-2705

Mailing address

40 Holland St
Harvard Vanguard Medical Associates
Somerville, MA 02144-2705
Phone (617) 629-6350

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address gjohnsonmd13431@direct.atrius.masshiway.net

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA
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 1

Enrollment IDStateProvider typePAC IDDetails
I20051201000118 MA Practitioner - Internal Medicine 2264452523 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Warren Alpert Medical School of Brown University, 1993
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Atrius Health IncGroup PAC ID 4789588641, 1,214 clinicians

Practice addresses (Care Compare)

100 2ND Ave
Needham, MA 02494-2809
Phone (781) 726-4800

133 Brookline Ave
Boston, MA 02215-3904
Phone (617) 421-1000

291 Independence Dr
Chestnut Hill, MA 02467-3628
Phone (617) 325-2800

40 Holland St
Somerville, MA 02144-2705
Phone (617) 629-6000

77 Herrick St
Suite 101
Beverly, MA 01915-2734
Phone (978) 927-4110

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled
HHS exclusion list flag
CMS’s directory marks this NPI as on an HHS exclusion list; no matching OIG record was found. The OIG exclusions file (LEIE) holds no record for this NPI, and the directory does not say which list the flag comes from. How exclusions are shown Confirm with the OIG exclusions search.
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Atrius Health, Inc. Internal Medicine CurrentSince May 1, 2009 Accepting new patients
Atrius Health, Inc. Internal Medicine Current Accepting new patients
Atrius Health, Inc. Internal Medicine CurrentSince May 1, 2009 Accepting new patients
Jordan Physician Associates, Inc. Past Accepting new patients
Jordan Physician Associates, Inc. Internal Medicine Past Accepting new patients
President & Fellows of Harvard College Past Accepting new patients

Locations

133 Brookline Ave
Boston, MA 02215
Phone (617) 421-1000

147 Milk St
Fl 9
Boston, MA 02109
Phone (617) 559-8051

40 Holland St
Somerville, MA 02144
Phone (617) 629-6000

Organizations & group practices 6

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

Hospital & facility affiliations 2

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1155513600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1613606400000",
    "number": "1942213509",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "40 HOLLAND ST",
            "address_2": "HARVARD VANGUARD MEDICAL ASSOCIATES",
            "city": "SOMERVILLE",
            "state": "MA",
            "postal_code": "021442705",
            "telephone_number": "617-629-6350"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "40 HOLLAND ST",
            "address_2": "HARVARD VANGUARD MEDICAL ASSOCIATES",
            "city": "SOMERVILLE",
            "state": "MA",
            "postal_code": "021442705",
            "telephone_number": "617-629-6350"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "JOHNSON",
        "first_name": "GREGORY",
        "middle_name": "A.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-08-14",
        "last_updated": "2021-02-18",
        "certification_date": "2021-02-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MA",
            "license": "151587",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "gjohnsonmd13431@direct.atrius.masshiway.net",
            "affiliation": "N",
            "address_1": "40 Holland St",
            "address_2": "Harvard Vanguard Medical Associates",
            "city": "Somerville",
            "state": "MA",
            "country_code": "US",
            "postal_code": "021442705",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Somerville, MA

Sources for this page

Verify at the official NPI Registry.