Katherine Williams, LCSW
Katherine Williams, LCSW is a provider specialising in Clinical Social Worker in Chicago, IL, registered under NPI 1003351222. 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 Chicago, based on OpenStreetMap data collected Sep 20, 2026. Parking is available about 1,029 ft away at Grant Park North Garage. There is EV charging 0.47 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 284 ft away, served by Adams & Wabash. A pharmacy sits 0.22 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 504 ft away.
Getting here and what is nearby
Restaurant Chick-fil-A 68 ft ~1 min
122 South Michigan Avenue, Chicago 60603
Mo-Sa 08:30-20:30; Su off
Transit Michigan & Monroe 181 ft ~1 min
Coffee Starbucks 184 ft ~1 min
200 South Michigan Avenue, Chicago 60604
Sa 06:00-22:00; Su 06:00-20:00; Mo-Th 05:30-20:00; Fr 05:30-21:00
Restaurant Jollibee 136 ft ~1 min
Restaurant Russian Tea Time 173 ft ~1 min
77 East Adams Street, 60603
Su-Mo 11:00-18:00, Tu-Sa 11:00-20:00
Coffee Sugary Chicago 236 ft ~1 min
Transit Michigan & Monroe 261 ft ~1 min
Transit Adams & Wabash 284 ft ~2 min
Convenience Chitown Food & Deli 401 ft ~2 min
30 East Adams Street, Chicago 60603
Convenience 7-Eleven 435 ft ~2 min
Hotel University Club of Chicago 400 ft ~2 min
Coffee Broadway Café 504 ft ~2 min
Parking Adams-Wabash Self Park 525 ft ~2 min
17 East Adams Street, Chicago 60603
Hotel The Palmer House Hilton 578 ft ~3 min
17 East Monroe Street, Chicago 60603
Hotel Chicago Athletic Association Hotel 643 ft ~3 min
Pharmacy CVS Pharmacy 646 ft ~3 min
Convenience 7-Eleven 683 ft ~3 min
Parking Grant Park South Garage 777 ft ~3 min
Pharmacy CVS Pharmacy 975 ft ~4 min
1 South State Street, Chicago 60603
Parking Grant Park North Garage 1,029 ft ~4 min
Pharmacy Walgreens 0.22 mi ~5 min
30 North Michigan Avenue, Chicago 60602
Mo-Fr 07:00-22:00; Sa-Su 08:00-22:00
Gas station BP 0.37 mi ~8 min
EV charging ChargePoint 0.47 mi ~10 min
EV charging ChargePoint 0.47 mi ~10 min
Grocery Bockwinkel's 0.49 mi ~10 min
222 North Columbus Drive, Chicago 60601
Mo-Su 08:00-23:00
Grocery Mariano's Fresh Market 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 |
|---|---|---|
| 149019046 | IL | Clinical Social Worker primary |
This provider holds licence 149019046 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
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 | 1003351222 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 23, 2016 |
| Last updated | Dec 23, 2016 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | LCSW |
| Practice address |
122 S MICHIGAN AVE SUITE 1307D Chicago, IL 60603 (630) 299-9537 |
| Mailing address |
612 MAVES DR Batavia, IL 60510 |
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 | 5 | 1 | 2 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 5 | 2 | 2 | 4 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
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.