PROFESSIONAL DIAGNOSTIC SERVICE, S.C.
PROFESSIONAL DIAGNOSTIC SERVICE, S.C. is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003063421, based in Chicago, IL. It is classified under Community/Behavioral Health Agency.
Getting there
Here is what surrounds this office in Chicago, based on OpenStreetMap data collected Sep 3, 2026. Parking is available about 0.39 mi away at Presidential Towers Garage. There is EV charging 0.30 mi from the office (Blink ParkChip Garage - 1035 Van Buren) — useful if you are driving in from out of town. The nearest transit stop is 415 ft away, served by UIC-Halsted Blue Line Station. If you arrive early, there is a coffee shop 632 ft away.
Getting here and what is nearby
Transit Van Buren & Halsted 126 ft ~1 min
Restaurant Giordano's Pizzeria 132 ft ~1 min
Restaurant Jimmy John's 150 ft ~1 min
Restaurant Primos Chicago Pizza 237 ft ~1 min
816 West Van Buren Street, Chicago 60607
Convenience 7-Eleven 317 ft ~2 min
Hotel Sonder Greektown 299 ft ~2 min
Transit UIC-Halsted Blue Line Station 373 ft ~2 min
Coffee Artopolis 378 ft ~2 min
306 South Halsted Street, Chicago 60661
Mo-Th 08:30-00:00; Fr-Sa 08:30-01:00; Su 09:00-00:00
Transit UIC-Halsted Blue Line Station 415 ft ~2 min
Coffee Moka & Co 553 ft ~3 min
Coffee Ground Up 632 ft ~3 min
900 West Van Buren Street, Chicago 60607
Mo-Fr 06:00-18:00; Sa-Su 07:30-17:00
Grocery H Mart 820 ft ~4 min
711 West Jackson Boulevard, Chicago 60661
Mo-Su 09:00-22:00
Convenience Go Grocer 0.20 mi ~4 min
205 South Peoria Street, Chicago 60607
Mo-We,Su 08:00-22:00; Th-Sa 08:00-23:00
Convenience 7-Eleven 0.21 mi ~5 min
627 West Jackson Boulevard, Chicago 60661
EV charging Blink 0.24 mi ~5 min
EV charging 0.25 mi ~6 min
Grocery Wild Fork 0.25 mi ~6 min
Gas station Shell 0.26 mi ~6 min
1001 West Jackson Boulevard, Chicago 60607
Hotel Crowne Plaza Chicago West Loop 0.29 mi ~6 min
25 South Halsted Street, Chicago 60661
EV charging Blink ParkChip Garage - 1035 Van Buren 0.30 mi ~6 min
Grocery Mariano's Fresh Market 0.30 mi ~7 min
40 South Halsted Street, Chicago 60607
06:00-22:00
Parking 0.32 mi ~7 min
601 West Monroe Street, Chicago 60661
Parking UIC Lot 11 0.37 mi ~8 min
1055 West Congress Parkway, Chicago 60607
Parking Presidential Towers Garage 0.39 mi ~8 min
32 South Jefferson Street, Chicago 60661
Hotel Holiday Inn Chicago-Downtown 0.40 mi ~9 min
Gas station Shell 0.48 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 |
|---|---|---|
| A-3920-0003-A | IL | Community/Behavioral Health Agency primary |
This provider holds licence A-3920-0003-A 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 Community/Behavioral Health covers
A private or public agency usually under local government jurisdiction, responsible for assuring the delivery of community based mental health, intellectual disabilities, substance abuse and/or behavioral health services to individuals with those disabilities. Services may range from companion care, respite, transportation, community integration, crisis intervention and stabilization, supported employment, day support, prevocational services, residential support, therapeutic and supportive consultation, environmental modifications, intensive in-home therapy and day treatment, in addition to traditional mental health and behavioral treatment. NUCC Health Care Provider Taxonomy, code 251S00000X
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003063421 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Aug 27, 2008 |
| Last updated | Aug 27, 2008 |
| Status | Active |
| Practice address |
821 W VAN BUREN ST Chicago, IL 60607 (312) 491-0404 Fax (312) 491-0505 |
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 | 0 | 6 | 3 | 4 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 6 | 6 | 4 | 4 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
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.