Tatjana Williams, LSW
Tatjana Williams, LSW is a provider specialising in Social Worker in Dekalb, IL, registered under NPI 1003395088.
Getting there
Here is what surrounds this office in Dekalb, based on OpenStreetMap data collected Sep 10, 2026. Parking is available about 778 ft away. The nearest transit stop is 297 ft away, served by 18. If you arrive early, there is a coffee shop 0.44 mi away.
Getting here and what is nearby
Transit Health Services at YMCA 34 ft ~1 min
Transit Old Kishwaukee Shelter 120 ft ~1 min
Transit 18 297 ft ~2 min
Parking 560 ft ~3 min
Parking 682 ft ~3 min
Parking 778 ft ~3 min
Gas station Circle K - DeKalb Ave 0.20 mi ~4 min
Hotel Holiday Inn Express & Suites 0.30 mi ~6 min
1935 DeKalb Avenue, Sycamore 60178
Restaurant Texas Roadhouse 0.34 mi ~7 min
Restaurant Jamrah Middle Eastern Cusine 0.35 mi ~7 min
2672 DeKalb Avenue, Sycamore 60178
Fr-Sa 11:30-20:00; Su 11:30-19:00
Gas station Hy-Vee Gas 0.41 mi ~9 min
2720 DeKalb Avenue, Sycamore 60178
Mo-Su 05:00-23:00
Convenience Hy-Vee Gas 0.42 mi ~9 min
2720 DeKalb Avenue, Sycamore 60178
Mo-Su 05:00-23:00
Coffee Caribou Coffee 0.44 mi ~9 min
2700 Dekalb Avenue, Sycamore 60178
Mo-Su 07:00-19:00
Grocery Hy-Vee 0.44 mi ~9 min
2700 DeKalb Avenue, Sycamore 60178
Mo-Su 06:00-11:00
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 |
|---|---|---|
| 150.106571 | IL | Social Worker primary |
This provider holds licence 150.106571 issued in IL. 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
- 0941784532
- Enrollment ID
- I20260320003919
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 Social Worker covers
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public. NUCC Health Care Provider Taxonomy, code 104100000X
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 | 1003395088 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 9, 2018 |
| Last updated | Jan 20, 2022 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | LSW |
| Practice address |
12 HEALTH SERVICES DR Dekalb, IL 60115 (815) 756-4875 |
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 | 3 | 9 | 5 | 0 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 9 | 1 | 0 | 7 |
Sum = 52 · next multiple of 10 = 60 · check digit = 8 · actual last digit = 8
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.