Active NPI
Isabelle Breen, LCSW
- Clinical Social Worker
- Milford, CT
National Provider Identifier
1003856584
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Social Worker
- License
- 005825
- Practice address
- 949 Bridgeport Ave
Milford, CT 06460-3142 - Phone
- (203) 878-6365
- NPI assigned
- Jun 7, 2006
- 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 | 005825 | CT | Primary |
Addresses
Primary practice location
949 Bridgeport Ave
Milford, CT 06460-3142
Mailing address
18 Colony Rd
Westport, CT 06880-3702
Phone (203) 454-2052
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 |
|---|---|---|---|
| 005825 | CT | MD | Clinical Social Worker |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1149638400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1003856584",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "18 COLONY RD",
"city": "WESTPORT",
"state": "CT",
"postal_code": "068803702",
"telephone_number": "203-454-2052"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "949 BRIDGEPORT AVE",
"city": "MILFORD",
"state": "CT",
"postal_code": "064603142",
"telephone_number": "203-878-6365"
}
],
"practiceLocations": [],
"basic": {
"last_name": "BREEN",
"first_name": "ISABELLE",
"credential": "LCSW",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2006-06-07",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "CT",
"license": "005825",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Milford, CT
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.