Active NPI
Yeonjoo Son, LMHC
- Mental Health Counselor
- Northborough, MA
National Provider Identifier
1891020582
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Mental Health Counselor
- License
- 9441
- Practice address
- 300 W Main St Ste 201
Northborough, MA 01532-2132 - Phone
- (508) 571-5391
- NPI assigned
- Oct 14, 2009
- Sex
- Female
- Sole proprietor
- Yes
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 | 9441 | MA | Primary |
Addresses
Primary practice location
300 W Main St Ste 201
Northborough, MA 01532-2132
Mailing address
300 W Main St Ste 201
Northborough, MA 01532-2132
Phone (508) 571-5391
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 |
|---|---|---|---|
| 9441 | MA | MD | Clinical Psychologist |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Aegis Medical Systems | Past | Accepting new patients |
Organizations & group practices 1
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- Health Maintenance Organization
- Oxnard, CA
- NPI 1316260094
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1255478400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1749686400000",
"number": "1891020582",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "300 W MAIN ST STE 201",
"city": "NORTHBOROUGH",
"state": "MA",
"postal_code": "015322132",
"telephone_number": "508-571-5391"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "300 W MAIN ST STE 201",
"city": "NORTHBOROUGH",
"state": "MA",
"postal_code": "015322132",
"telephone_number": "508-571-5391"
}
],
"practiceLocations": [],
"basic": {
"last_name": "SON",
"first_name": "YEONJOO",
"credential": "LMHC",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2009-10-14",
"last_updated": "2025-06-12",
"certification_date": "2025-06-12",
"status": "A"
},
"taxonomies": [
{
"code": "101YM0800X",
"taxonomy_group": "",
"desc": "Counselor, Mental Health",
"state": "MA",
"license": "9441",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Northborough, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 12, 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.