Active NPI
Elizabeth Ann Portnoy, LCSW
- Clinical Social Worker
- Chelsea, MA
National Provider Identifier
1669343109
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Social Worker
- License
- 229813
- Practice address
- 299 Everett Ave
Chelsea, MA 02150-1547 - Phone
- (617) 466-5065
- NPI assigned
- Sep 17, 2025
- 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 | 229813 | MA | Primary |
Addresses
Primary practice location
299 Everett Ave
Chelsea, MA 02150-1547
Mailing address
299 Everett Ave
Chelsea, MA 02150-1547
Phone (617) 466-5065
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
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 229813 | MA | MD | Clinical Social Worker |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1758067200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1758067200000",
"number": "1669343109",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "299 EVERETT AVE",
"city": "CHELSEA",
"state": "MA",
"postal_code": "021501547",
"telephone_number": "617-466-5065"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "299 EVERETT AVE",
"city": "CHELSEA",
"state": "MA",
"postal_code": "021501547",
"telephone_number": "617-466-5065"
}
],
"practiceLocations": [],
"basic": {
"last_name": "PORTNOY",
"first_name": "ELIZABETH",
"middle_name": "ANN",
"credential": "LCSW",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2025-09-17",
"last_updated": "2025-09-17",
"certification_date": "2025-09-17",
"status": "A"
},
"taxonomies": [
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "MA",
"license": "229813",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Chelsea, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 17, 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.