Silvia Diaz, LCSW
Silvia Diaz, LCSW is a provider specialising in Clinical Social Worker in Chicago, IL, registered under NPI 1003204686. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Chicago, based on OpenStreetMap data collected Sep 11, 2026. Parking is available about 0.40 mi away. The nearest transit stop is 239 ft away, served by North Ave & California. A pharmacy sits 0.40 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.45 mi away.
Getting here and what is nearby
Pharmacy AllCareX Discount Pharmacy 0.00 mi ~1 min
2750 West North Avenue, Chicago 60647
Mo 08:30-17:30; Tu 08:30-19:30; We 10:00-19:00; Th-Fr 08:30-17:30; Sa 09:00-16:30
Transit California & North Ave 111 ft ~1 min
Coffee Etheria Cafe 172 ft ~1 min
2800 West North Avenue, Chicago 60647
Mo-Fr 07:00-16:00; Sa-Su 08:00-14:00
Transit North Ave & California 217 ft ~1 min
Parking 223 ft ~1 min
Transit North Ave & California 239 ft ~1 min
Parking 256 ft ~1 min
Grocery Cermak Produce 491 ft ~2 min
Restaurant Burger King 561 ft ~3 min
2840 West North Avenue, Chicago 60647
06:00-22:00
Restaurant 1492 Cuban Fusion 0.20 mi ~4 min
Restaurant Yacht 57 0.22 mi ~5 min
1750 North California Avenue, Chicago 60647
Tu-Sa 11:00-21:00; Su 01:00-19:00
Convenience El Yunque 0.37 mi ~8 min
1900 North California Avenue
Coffee The Boathouse Cafe 0.39 mi ~8 min
Parking 0.40 mi ~8 min
2435-2449 West North Avenue
Pharmacy Walgreens 0.40 mi ~9 min
Coffee Drink Happy Thoughts 0.45 mi ~9 min
Convenience Shell 0.46 mi ~10 min
2400 West North Avenue, Chicago 60647
Gas station Shell 0.46 mi ~10 min
2400 West North Avenue, Chicago 60647
Convenience BP Shop 0.47 mi ~10 min
2801 West Armitage Avenue, Chicago 60647
Gas station BP 0.47 mi ~10 min
2801 West Armitage Avenue, Chicago 60647
Grocery FoodSmart 0.49 mi ~10 min
1948 North Francisco Avenue
Gas station BP 0.50 mi ~11 min
3142 West North Avenue, Chicago 60647
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 |
|---|---|---|
| 149019574 | IL | Clinical Social Worker primary |
This provider holds licence 149019574 issued in IL. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
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
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 101YM0800X | Mental Health Counselor Mental Health | — | — | |
| 1041C0700X | Clinical Social Worker Clinical | 149019574 | IL | primary |
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 | 1003204686 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jan 5, 2015 |
| Last updated | Nov 29, 2023 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | LCSW |
| Practice address |
2750 W NORTH AVE Chicago, IL 60647 (312) 666-3494 Fax (312) 666-6228 |
| Mailing address |
1701 W SUPERIOR ST Chicago, IL 60622 |
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 | 2 | 0 | 4 | 6 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 0 | 8 | 6 | 7 |
Sum = 54 · next multiple of 10 = 60 · check digit = 6 · actual last digit = 6
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.