Active NPI
Karen Lee Welch Buttars, LMHC
- Mental Health Counselor
- Williamstown, MA
National Provider Identifier
1902945678
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Mental Health Counselor
- License
- 5357
- Practice address
- 311C Main St
Williamstown, MA 01267-2610 - Phone
- (617) 564-0255
- Fax
- (888) 915-0756
- NPI assigned
- Feb 6, 2007
- Reactivated
- Sep 30, 2016
- Last updated
- May 6, 2026
- 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 | 5357 | MA | Primary |
Addresses
Primary practice location
311C Main St
Williamstown, MA 01267-2610
Mailing address
311C Main St
Williamstown, MA 01267-2610
Phone (617) 564-0255
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Opted out of Medicare
- Yes, effective Jan 4, 2026 through Jan 4, 2028
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 5357 | MA | MD | Optometrist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1170720000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1778025600000",
"number": "1902945678",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "311C MAIN ST",
"city": "WILLIAMSTOWN",
"state": "MA",
"postal_code": "012672610",
"telephone_number": "617-564-0255",
"fax_number": "888-915-0756"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "311C MAIN ST",
"city": "WILLIAMSTOWN",
"state": "MA",
"postal_code": "012672610",
"telephone_number": "617-564-0255",
"fax_number": "888-915-0756"
}
],
"practiceLocations": [],
"basic": {
"last_name": "WELCH BUTTARS",
"first_name": "KAREN",
"middle_name": "LEE",
"name_prefix": "Ms.",
"credential": "LMHC",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2007-02-06",
"last_updated": "2026-05-06",
"certification_date": "2026-05-06",
"deactivation_date": "2015-08-06",
"reactivation_date": "2016-09-30",
"status": "A"
},
"taxonomies": [
{
"code": "101YM0800X",
"taxonomy_group": "",
"desc": "Counselor, Mental Health",
"state": "MA",
"license": "5357",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Williamstown, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 6, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Opt Out Affidavits.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.