Active NPI
William Allieu
- Case Manager/Care Coordinator
- Washington, DC
National Provider Identifier
1871296418
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Case Manager/Care Coordinator
- Practice address
- 1304 N Capitol St NW
Washington, DC 20002-3360 - Phone
- (202) 800-4387
- NPI assigned
- Mar 23, 2023
- Sex
- Male
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Clinical Social Worker | 1041C0700X | LG200006902 | DC | |
| Case Manager/Care Coordinator | 171M00000X | Primary |
Addresses
Primary practice location
1304 N Capitol St NW
Washington, DC 20002-3360
Mailing address
1304 N Capitol St NW
Washington, DC 20002-3360
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 |
|---|---|---|---|
| LG200006902 | DC | MD | Clinical Social Worker |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1679529600000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1780012800000",
"number": "1871296418",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1304 N CAPITOL ST NW",
"city": "WASHINGTON",
"state": "DC",
"postal_code": "200023360"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1304 N CAPITOL ST NW",
"city": "WASHINGTON",
"state": "DC",
"postal_code": "200023360",
"telephone_number": "202-800-4387"
}
],
"practiceLocations": [],
"basic": {
"last_name": "ALLIEU",
"first_name": "WILLIAM",
"sole_proprietor": "YES",
"sex": "M",
"enumeration_date": "2023-03-23",
"last_updated": "2026-05-29",
"certification_date": "2026-05-29",
"status": "A"
},
"taxonomies": [
{
"code": "1041C0700X",
"taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
"desc": "Social Worker, Clinical",
"state": "DC",
"license": "LG200006902",
"primary": false
},
{
"code": "171M00000X",
"taxonomy_group": "",
"desc": "Case Manager/Care Coordinator",
"state": null,
"license": null,
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Washington, DC
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 29, 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.