Active NPI
Russell H Horwitz, MD, PHD
- Psychiatry Physician
- Potomac, MD
National Provider Identifier
1477744597
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Psychiatry Physician
- License
- D0076586
- Practice address
- 8201 Killean Way
Potomac, MD 20854-2728 - Phone
- (646) 708-1986
- NPI assigned
- Aug 5, 2007
- Last updated
- Jun 20, 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 |
|---|---|---|---|---|
| Psychiatry Physician | 2084P0800X | D0076586 | MD | Primary |
Addresses
Primary practice location
8201 Killean Way
Potomac, MD 20854-2728
Mailing address
8201 Killean Way
Potomac, MD 20854-2728
Phone (646) 708-1986
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, Doctor of Philosophy
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| D0076586 | MD | MD | Psychiatry Physician |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1186272000000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1750377600000",
"number": "1477744597",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "8201 KILLEAN WAY",
"city": "POTOMAC",
"state": "MD",
"postal_code": "208542728",
"telephone_number": "646-708-1986"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "8201 KILLEAN WAY",
"city": "POTOMAC",
"state": "MD",
"postal_code": "208542728",
"telephone_number": "646-708-1986"
}
],
"practiceLocations": [],
"basic": {
"last_name": "HORWITZ",
"first_name": "RUSSELL",
"middle_name": "H",
"credential": "MD, PHD",
"sole_proprietor": "NO",
"sex": "M",
"enumeration_date": "2007-08-05",
"last_updated": "2025-06-20",
"certification_date": "2025-06-20",
"status": "A"
},
"taxonomies": [
{
"code": "2084P0800X",
"taxonomy_group": "",
"desc": "Psychiatry & Neurology, Psychiatry",
"state": "MD",
"license": "D0076586",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Potomac, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 20, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.