Active NPI
Elaine Black Jost, LICSW
- Mental Health Counselor
- Watertown, MA
National Provider Identifier
1831181296
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Mental Health Counselor
- License
- 105526
- Practice address
- 14 Appleton Ter
Watertown, MA 02472-3556 - Phone
- (617) 969-9877
- Fax
- (617) 924-4647
- NPI assigned
- Aug 21, 2005
- 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 |
|---|---|---|---|---|
| Mental Health Counselor | 101YM0800X | 105526 | MA | Primary |
Addresses
Primary practice location
14 Appleton Ter
Watertown, MA 02472-3556
Mailing address
14 Appleton Ter
Watertown, MA 02472-3556
Phone (617) 969-9877
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)
- Enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 105526 | MA | MD | Mental Health Counselor |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1124582400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1831181296",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "14 APPLETON TER",
"city": "WATERTOWN",
"state": "MA",
"postal_code": "024723556",
"telephone_number": "617-969-9877",
"fax_number": "617-924-4647"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "14 APPLETON TER",
"city": "WATERTOWN",
"state": "MA",
"postal_code": "024723556",
"telephone_number": "617-969-9877",
"fax_number": "617-924-4647"
}
],
"practiceLocations": [],
"basic": {
"last_name": "JOST",
"first_name": "ELAINE",
"middle_name": "BLACK",
"name_prefix": "Ms.",
"credential": "LICSW",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2005-08-21",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "101YM0800X",
"taxonomy_group": "",
"desc": "Counselor, Mental Health",
"state": "MA",
"license": "105526",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Watertown, 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.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.