Active NPI
Joseph A Whitehorn, PHD
- Psychologist
- Charlestown, MA
National Provider Identifier
1518958263
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Psychologist
- License
- 2587
- Practice address
- 73 High St
Charlestown Health Care Center CTN
Charlestown, MA 02129-3096 - Phone
- (617) 724-8200
- Fax
- (617) 726-3514
- NPI assigned
- Nov 2, 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 |
|---|---|---|---|---|
| Psychologist | 103T00000X | 2587 | MA | Primary |
Addresses
Primary practice location
73 High St
Charlestown Health Care Center CTN
Charlestown, MA 02129-3096
Mailing address
PO Box 9142
Mass General Physician Organization
Charlestown, MA 02129-9142
Phone (617) 724-0287
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)
- Enrolled
- Credentials
- Doctor of Philosophy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 2587 | MA | MD | Physician Assistant |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1130889600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1518958263",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 9142",
"address_2": "MASS GENERAL PHYSICIAN ORGANIZATION",
"city": "CHARLESTOWN",
"state": "MA",
"postal_code": "021299142",
"telephone_number": "617-724-0287",
"fax_number": "617-726-2894"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "73 HIGH ST",
"address_2": "CHARLESTOWN HEALTH CARE CENTER CTN",
"city": "CHARLESTOWN",
"state": "MA",
"postal_code": "021293096",
"telephone_number": "617-724-8200",
"fax_number": "617-726-3514"
}
],
"practiceLocations": [],
"basic": {
"last_name": "WHITEHORN",
"first_name": "JOSEPH",
"middle_name": "A",
"name_prefix": "Dr.",
"credential": "PHD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2005-11-02",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "103T00000X",
"taxonomy_group": "",
"desc": "Psychologist",
"state": "MA",
"license": "2587",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Charlestown, MA
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.