Active NPI
Shawn Alexander Hallett, DDS, PHD
- Dentist
- Somerville, MA
National Provider Identifier
1003706839
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Dentist
- License
- DN10001057
- Practice address
- 14 McGrath Hwy
Somerville, MA 02143-4505 - Phone
- (617) 934-2164
- NPI assigned
- Jul 3, 2025
- Sex
- Male
- 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 |
|---|---|---|---|---|
| Dentist | 122300000X | DN10001057 | MA | Primary |
Addresses
Primary practice location
14 McGrath Hwy
Somerville, MA 02143-4505
Mailing address
14 McGrath Hwy
Somerville, MA 02143-4505
Phone (617) 934-2164
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
- Credentials
- Doctor of Philosophy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| DN10001057 | MA | MD | Dentist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1751500800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1778803200000",
"number": "1003706839",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "14 MCGRATH HWY",
"city": "SOMERVILLE",
"state": "MA",
"postal_code": "021434505",
"telephone_number": "617-934-2164"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "14 MCGRATH HWY",
"city": "SOMERVILLE",
"state": "MA",
"postal_code": "021434505",
"telephone_number": "617-934-2164"
}
],
"practiceLocations": [],
"basic": {
"last_name": "HALLETT",
"first_name": "SHAWN",
"middle_name": "ALEXANDER",
"name_prefix": "Dr.",
"credential": "DDS, PHD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2025-07-03",
"last_updated": "2026-05-15",
"certification_date": "2026-05-15",
"status": "A"
},
"taxonomies": [
{
"code": "122300000X",
"taxonomy_group": "",
"desc": "Dentist",
"state": "MA",
"license": "DN10001057",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Somerville, MA
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 15, 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.