Active NPI
Gregory A. Johnson, MD
- Internal Medicine Physician
- Somerville, MA
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Internal Medicine Physician
- License
- 151587
- 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, 2021
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| 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
Enrollment records 1
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
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.
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Atrius Health, Inc. | Internal Medicine | Current | Accepting new patients |
| Atrius Health, Inc. | Internal Medicine | Current | Accepting new patients |
| Atrius Health, Inc. | Internal Medicine | Current | 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.
-
- Internal Medicine Physician
- Boston, MA
- NPI 1871639914
-
dba Harvard Vanguard Medical Associates
- Internal Medicine Physician
- Beverly, MA
- NPI 1114265634
-
dba Harvard Vanguard Medical Associates
- Internal Medicine Physician
- Chestnut Hill, MA
- NPI 1952518391
-
dba BIDH-Plymouth Pathology
- Anatomic Pathology & Clinical Pathology Physician
- Plymouth, MA
- NPI 1194263186
-
- Family Medicine Physician
- Plymouth, MA
- NPI 1538145131
Internal Medicine
-
dba Harvard University Health Services
- Multi-Specialty Clinic/Center
- Cambridge, MA
- NPI 1952366312
Hospital & facility affiliations 2
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Beverly, MA
- NPI 1316917941
-
- Psychiatric Hospital Unit
- Beverly, MA
- NPI 1407827710
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 18, 2021; 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.