Active NPI
Jeffrey A Gelfand, MD
- Allergy & Immunology Physician
- Boston, MA
National Provider Identifier
1114917986
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Allergy & Immunology Physician
- License
- 40886
- Practice address
- 55 Fruit St
S50-801 Infectious Disease Associates
Boston, MA 02114-2621 - Phone
- (617) 726-1796
- NPI assigned
- Oct 24, 2005
- Last updated
- Jul 13, 2026
- 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 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Allergy & Immunology Physician | 207K00000X | 40886 | MA | Primary |
| Infectious Disease Physician | 207RI0200X | 40886 | MA |
Addresses
Primary practice location
55 Fruit St
S50-801 Infectious Disease Associates
Boston, MA 02114-2621
Mailing address
PO Box 9142
Mass General Physician Organization
Charlestown, MA 02129-9142
Phone (617) 724-0287
Other identifiers 3
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0104744 | Medicaid | MA | |
| 702060 | Other | MA | TUFTS HEALTH PLAN |
| E05091 | Other | MA | BCBS MA |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Eligible to order & refer
- Part B services: No
- Medical equipment: Yes
- Home health: No
- Power mobility devices: Yes
- Hospice: No
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1130112000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1114917986",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 9142",
"address_2": "MASS GENERAL PHYSICIAN ORGANIZATION",
"city": "CHARLESTOWN",
"state": "MA",
"postal_code": "021299142",
"telephone_number": "617-724-0287",
"fax_number": "617-726-2894"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "55 FRUIT ST",
"address_2": "S50-801 INFECTIOUS DISEASE ASSOCIATES",
"city": "BOSTON",
"state": "MA",
"postal_code": "021142621",
"telephone_number": "617-726-1796"
}
],
"practiceLocations": [],
"basic": {
"last_name": "GELFAND",
"first_name": "JEFFREY",
"middle_name": "A",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-10-24",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "207K00000X",
"taxonomy_group": "",
"desc": "Allergy & Immunology",
"state": "MA",
"license": "40886",
"primary": true
},
{
"code": "207RI0200X",
"taxonomy_group": "",
"desc": "Internal Medicine, Infectious Disease",
"state": "MA",
"license": "40886",
"primary": false
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "0104744",
"state": "MA"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "TUFTS HEALTH PLAN",
"identifier": "702060",
"state": "MA"
},
{
"code": "01",
"desc": "Other (non-Medicare)",
"issuer": "BCBS MA",
"identifier": "E05091",
"state": "MA"
}
],
"endpoints": [],
"other_names": []
}Other providers in Boston, MA
Sources for this page
- 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.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.