Active NPI
Gillian Vandelft, M.ED., MSW, LICSW
- Clinical Social Worker
- Boston, MA
National Provider Identifier
1770889263
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Social Worker
- License
- 123041
- Practice address
- PO Box 191394
Boston, MA 02119-0027 - Phone
- (617) 771-0655
- NPI assigned
- Feb 1, 2011
- Sex
- Female
- 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 |
|---|---|---|---|---|
| Clinical Social Worker | 1041C0700X | 123041 | MA | Primary |
Addresses
Primary practice location
PO Box 191394
Boston, MA 02119-0027
Mailing address
PO Box 191394
Boston, MA 02119-0027
Phone (617) 771-0655
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
- Credentials
- Master of Education
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 123041 | MA | MD | Clinical Social Worker |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1296518400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1756166400000",
"number": "1770889263",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 191394",
"city": "BOSTON",
"state": "MA",
"postal_code": "021190027",
"telephone_number": "617-771-0655"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "PO BOX 191394",
"city": "BOSTON",
"state": "MA",
"postal_code": "021190027",
"telephone_number": "617-771-0655"
}
],
"practiceLocations": [],
"basic": {
"last_name": "VANDELFT",
"first_name": "GILLIAN",
"credential": "M.ED., MSW, LICSW",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2011-02-01",
"last_updated": "2025-08-26",
"certification_date": "2025-08-26",
"status": "A"
},
"taxonomies": [
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "MA",
"license": "123041",
"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 Aug 26, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.