Anja Blackadar, LCSW
Anja Blackadar, LCSW is a provider specialising in Clinical Social Worker in Alexandria, VA, registered under NPI 1003561069. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Alexandria, based on OpenStreetMap data collected Sep 3, 2026. Parking is available about 0.48 mi away. There is EV charging 0.31 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 518 ft away, served by Mark Center Station. A pharmacy sits 0.38 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.37 mi away.
Getting here and what is nearby
Restaurant Dunkin' 286 ft ~2 min
4800 Mark Center Drive, Alexandria 22311
Mo-Fr 06:00-12:00; Sa-Su 00:00-24:00
Transit Mark Center Station 511 ft ~2 min
Transit Mark Center Station 513 ft ~2 min
Transit Mark Center Station 518 ft ~2 min
Hotel Hilton Alexandria Mark Center 1,007 ft ~4 min
Convenience 7-Eleven 0.20 mi ~4 min
Hotel Courtyard Alexandria Pentagon South 0.30 mi ~6 min
EV charging ChargePoint 0.31 mi ~7 min
Parking 0.36 mi ~8 min
4800 Fillmore Avenue, Alexandria 22311
Coffee Paris Baguette 0.37 mi ~8 min
4616 Kenmore Avenue, Alexandria 22034
Su-Th 06:00-21:00; Fr,Sa 06:00-22:00
Restaurant Genova Pizza 0.37 mi ~8 min
4614 Kenmore Avenue, Alexandria 22304
Mo-We 10:30-21:00; Th-Sa 10:30-22:00; Su 11:00-21:00
Convenience 7-Eleven 0.38 mi ~8 min
Gas station Exxon 0.38 mi ~8 min
4550 Kenmore Avenue, Alexandria 22304
Mo-Su 06:00-00:00
Pharmacy CVS Pharmacy 0.38 mi ~8 min
Grocery Aldi 0.39 mi ~8 min
4602 Kenmore Avenue, Alexandria 22304-1301
Mo-Su 08:00-21:00
Restaurant Clyde's At Mark Center 0.41 mi ~9 min
1700 North Beauregard Street, Alexandria 22311-1706
Parking 0.44 mi ~9 min
08:30-16:00; PH off
Parking 0.48 mi ~10 min
1466 South Greenmount Drive, Alexandria 22311
Grocery Global Food 0.49 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 0904015022 | VA | Clinical Social Worker primary |
This provider holds licence 0904015022 issued in VA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Clinical Social Worker
- PAC ID
- 3971969825
- Enrollment ID
- I20230518001084
Medicare enrolment is recorded as approved under the provider type Practitioner - Clinical Social Worker. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Clinical covers
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances. NUCC Health Care Provider Taxonomy, code 1041C0700X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003561069 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 18, 2022 |
| Last updated | Jun 18, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | LCSW |
| Practice address |
4850 MARK CENTER DR Alexandria, VA 22311 (703) 746-3400 |
| Mailing address |
3901 WHISPERING LN Falls Church, VA 22041 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 5 | 6 | 1 | 0 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 6 | 2 | 0 | 3 |
Sum = 41 · next multiple of 10 = 50 · check digit = 9 · actual last digit = 9
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.