Active NPI
Hans Breiter, MD
- Psychiatry Physician
- Boston, MA
National Provider Identifier
1548236359
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Psychiatry Physician
- License
- 74962
- Practice address
- 55 Fruit Street 149-2301
Massachusetts General Hospital
Boston, MA 02114 - Phone
- (617) 726-5715
- Fax
- (617) 726-7422
- NPI assigned
- Feb 23, 2006
- 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 |
|---|---|---|---|---|
| Psychiatry Physician | 2084P0800X | 74962 | MA | Primary |
Addresses
Primary practice location
55 Fruit Street 149-2301
Massachusetts General Hospital
Boston, MA 02114
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 Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 74962 | MA | MD | Psychiatry Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1140652800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1548236359",
"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": "55 FRUIT STREET 149-2301",
"address_2": "MASSACHUSETTS GENERAL HOSPITAL",
"city": "BOSTON",
"state": "MA",
"postal_code": "02114",
"telephone_number": "617-726-5715",
"fax_number": "617-726-7422"
}
],
"practiceLocations": [],
"basic": {
"last_name": "BREITER",
"first_name": "HANS",
"name_prefix": "Dr.",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2006-02-23",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "2084P0800X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Psychiatry",
"state": "MA",
"license": "74962",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Boston, 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.