Active NPI
Tanya Marie Clausen, LCSW
- Clinical Social Worker
- McLean, VA
National Provider Identifier
1366558926
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Clinical Social Worker
- License
- 0904005086
- Practice address
- 1487 Chain Bridge Rd
MC Lean, VA 22101-5723 - Phone
- (571) 251-6724
- NPI assigned
- Aug 23, 2006
- Last updated
- Oct 22, 2025
- Sex
- Female
- 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 | 62405 | CA | |
| Clinical Social Worker | 1041C0700X | 0904005086 | VA | Primary |
Addresses
Primary practice location
1487 Chain Bridge Rd
MC Lean, VA 22101-5723
Mailing address
1487 Chain Bridge Rd Ste 304
MC Lean, VA 22101-5723
Phone (571) 251-6724
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
- Opted out of Medicare
- Yes, effective Dec 2, 2025 through Dec 2, 2027
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Not enrolled
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 0904005086 | VA | MD | Clinical Social Worker |
| 62405 | CA | MD | Pharmacist |
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1156291200000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1761091200000",
"number": "1366558926",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "1487 CHAIN BRIDGE RD STE 304",
"city": "MC LEAN",
"state": "VA",
"postal_code": "221015723",
"telephone_number": "571-251-6724"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "1487 CHAIN BRIDGE RD",
"city": "MC LEAN",
"state": "VA",
"postal_code": "221015723",
"telephone_number": "571-251-6724"
}
],
"practiceLocations": [],
"basic": {
"last_name": "CLAUSEN",
"first_name": "TANYA",
"middle_name": "MARIE",
"credential": "LCSW",
"sole_proprietor": "YES",
"sex": "F",
"enumeration_date": "2006-08-23",
"last_updated": "2025-10-22",
"certification_date": "2025-10-22",
"status": "A"
},
"taxonomies": [
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "CA",
"license": "62405",
"primary": false
},
{
"code": "1041C0700X",
"taxonomy_group": "",
"desc": "Social Worker, Clinical",
"state": "VA",
"license": "0904005086",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in McLean, VA
- Citrus LLC
- Adrienne Joann Clamp, MD
- Teodora-Rowena B Clanor, M.D.
- Kailin April Clanton, PA
- Claudette Pilger, Psy.D., Inc.
- Marleine Shafik Clay, MD
- Laura G. Clement, LCSW, LCSW-C, LICSW
- Clementine Twin Lakes, LLC (Monte Nido Tysons Corner Day Treatment)
- Melonye Neiley Cleveland
- Amanda Jill Cloninger, LMSW
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 22, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Opt Out Affidavits.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.