Active NPI
Garrett T Brennan, DDS
- Pediatric Dentistry
- New London, CT
National Provider Identifier
1255320784
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pediatric Dentistry
- License
- 5990
- Practice address
- 190 Hempstead St
New London, CT 06320-6248 - Phone
- (860) 447-3216
- Fax
- (860) 701-6019
- NPI assigned
- Oct 18, 2005
- 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 |
|---|---|---|---|---|
| Pediatric Dentistry | 1223P0221X | 5990 | CT | Primary |
Addresses
Primary practice location
190 Hempstead St
New London, CT 06320-6248
Mailing address
190 Hempstead St
New London, CT 06320-6248
Phone (860) 447-3216
Other identifiers 1
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 2059905 | Medicaid | CT |
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 |
|---|---|---|---|
| 5990 | CT | MD | Pediatric Dentist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1129593600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1255320784",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "190 HEMPSTEAD ST",
"city": "NEW LONDON",
"state": "CT",
"postal_code": "063206248",
"telephone_number": "860-447-3216",
"fax_number": "860-701-6019"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "190 HEMPSTEAD ST",
"city": "NEW LONDON",
"state": "CT",
"postal_code": "063206248",
"telephone_number": "860-447-3216",
"fax_number": "860-701-6019"
}
],
"practiceLocations": [],
"basic": {
"last_name": "BRENNAN",
"first_name": "GARRETT",
"middle_name": "T",
"name_prefix": "Dr.",
"credential": "DDS",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-10-18",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "1223P0221X",
"taxonomy_group": "",
"desc": "Dentist, Pediatric Dentistry",
"state": "CT",
"license": "5990",
"primary": true
}
],
"identifiers": [
{
"code": "05",
"desc": "MEDICAID",
"issuer": null,
"identifier": "2059905",
"state": "CT"
}
],
"endpoints": [],
"other_names": []
}Other providers in New London, CT
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.