Active NPI
Aiselyn Mason
- Physical Therapy Assistant
- Worcester, MA
National Provider Identifier
1831656727
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Physical Therapy Assistant
- License
- 27958
- Practice address
- 18 Chestnut St
Worcester, MA 01608-1556 - Phone
- (734) 748-4468
- NPI assigned
- Feb 27, 2019
- Reactivated
- Feb 18, 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 |
|---|---|---|---|---|
| Physical Therapy Assistant | 225200000X | 27958 | MA | Primary |
Addresses
Primary practice location
18 Chestnut St
Worcester, MA 01608-1556
Mailing address
22 Hilldale Ave
Middleton, MA 01949-2422
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 |
|---|---|---|---|
| 27958 | MA | MD | Physical Therapy Assistant |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1551225600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1771459200000",
"number": "1831656727",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "22 HILLDALE AVE",
"city": "MIDDLETON",
"state": "MA",
"postal_code": "019492422"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "18 CHESTNUT ST",
"city": "WORCESTER",
"state": "MA",
"postal_code": "016081556",
"telephone_number": "734-748-4468"
}
],
"practiceLocations": [],
"basic": {
"last_name": "MASON",
"first_name": "AISELYN",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2019-02-27",
"last_updated": "2026-02-19",
"certification_date": "2026-02-19",
"deactivation_date": "2026-01-05",
"reactivation_date": "2026-02-18",
"status": "A"
},
"taxonomies": [
{
"code": "225200000X",
"taxonomy_group": "",
"desc": "Physical Therapy Assistant",
"state": "MA",
"license": "27958",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Worcester, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 19, 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.