Active NPI
Alexa Greco
- Mental Health Counselor
- Old Greenwich, CT
National Provider Identifier
1437939147
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Mental Health Counselor
- License
- 9380
- Practice address
- 1445 E Putnam Ave
Old Greenwich, CT 06870-1379 - Phone
- (203) 622-8600
- NPI assigned
- Oct 2, 2023
- Last updated
- Sep 21, 2026
- 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 | 9380 | CT | Primary |
Addresses
Primary practice location
1445 E Putnam Ave
Old Greenwich, CT 06870-1379
Mailing address
1445 E Putnam Ave
Old Greenwich, CT 06870-1379
Phone (203) 622-8600
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 |
|---|---|---|---|
| 9380 | CT | MD | Clinical Social Worker |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1696204800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1789948800000",
"number": "1437939147",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1445 E PUTNAM AVE",
"city": "OLD GREENWICH",
"state": "CT",
"postal_code": "068701379",
"telephone_number": "203-622-8600"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1445 E PUTNAM AVE",
"city": "OLD GREENWICH",
"state": "CT",
"postal_code": "068701379",
"telephone_number": "203-622-8600"
}
],
"practiceLocations": [],
"basic": {
"last_name": "GRECO",
"first_name": "ALEXA",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2023-10-02",
"last_updated": "2026-09-21",
"certification_date": "2026-09-21",
"status": "A"
},
"taxonomies": [
{
"code": "101YM0800X",
"taxonomy_group": "",
"desc": "Counselor, Mental Health",
"state": "CT",
"license": "9380",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Old Greenwich, CT
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 21, 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.