Active NPI
Abdelhakim Khellaf, M.D., C.M.
- Neuropathology Physician
- Boston, MA
National Provider Identifier
1043131121
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Neuropathology Physician
- License
- 3020068
- Practice address
- Mass General Brigham, 75 Francis Street, Cotran 360H
Dept. of Pathology
Boston, MA 02115 - Phone
- (617) 732-4699
- NPI assigned
- Jul 23, 2026
- Sex
- Male
- Sole proprietor
- Yes
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 |
|---|---|---|---|---|
| Neuropathology Physician | 207ZN0500X | 3020068 | MA | Primary |
Addresses
Primary practice location
Mass General Brigham, 75 Francis Street, Cotran 360H
Dept. of Pathology
Boston, MA 02115
Mailing address
Mass General Brigham, 75 Francis Street, Cotran 360H
Dept. of Pathology
Boston, MA 02115
Phone (617) 732-4699
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1784764800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1784764800000",
"number": "1043131121",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "MASS GENERAL BRIGHAM, 75 FRANCIS STREET, COTRAN 360H",
"address_2": "DEPT. OF PATHOLOGY",
"city": "BOSTON",
"state": "MA",
"postal_code": "02115",
"telephone_number": "617-732-4699"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "MASS GENERAL BRIGHAM, 75 FRANCIS STREET, COTRAN 360H",
"address_2": "DEPT. OF PATHOLOGY",
"city": "BOSTON",
"state": "MA",
"postal_code": "02115",
"telephone_number": "617-732-4699"
}
],
"practiceLocations": [],
"basic": {
"last_name": "KHELLAF",
"first_name": "ABDELHAKIM",
"credential": "M.D., C.M.",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2026-07-23",
"last_updated": "2026-07-23",
"status": "A"
},
"taxonomies": [
{
"code": "207ZN0500X",
"taxonomy_group": "",
"desc": "Pathology, Neuropathology",
"state": "MA",
"license": "3020068",
"primary": true
}
],
"identifiers": [],
"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 23, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.