Marilyn Johnson, PH.D
Marilyn Johnson, PH.D is a Clinical Psychologist in Chicago, IL, registered under NPI 1003021056. 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 Aug 30, 2026. Parking is available about 530 ft away at Huron-Superior Self Park. There is EV charging 0.39 mi from the office (EVgo) — useful if you are driving in from out of town. The nearest transit stop is 354 ft away, served by Ontario & St. Clair. A pharmacy sits 0.26 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 292 ft away.
Getting here and what is nearby
Coffee Do - Rite Donuts & Chicken 9 ft ~1 min
Restaurant Do-Rite Donuts & Chicken 48 ft ~1 min
Restaurant The Albert 127 ft ~1 min
Hotel Hotel EMC2 163 ft ~1 min
228 East Ontario Street, Chicago 60611
Hotel Fairfield Inn & Suites Chicago Downtown/Magnificent Mile 171 ft ~1 min
Parking Northwest University Parking B 155 ft ~1 min
259 East Erie Street, 60611
Restaurant Les Nomades 142 ft ~1 min
Hotel Hyatt Centric Chicago Magnificent Mile 214 ft ~1 min
215 East Erie Street, Chicago 60611
Coffee Stan's Donuts & Coffee 272 ft ~2 min
Transit Ontario & Fairbanks 295 ft ~2 min
Coffee Starbucks 292 ft ~2 min
Transit Fairbanks & Erie 351 ft ~2 min
Transit Ontario & St. Clair 354 ft ~2 min
Parking Erie Ontario Parking C 454 ft ~2 min
321 East Erie Street
Parking Huron-Superior Self Park 530 ft ~3 min
222 East Huron Street, Chicago 60611
Convenience 7-Eleven 645 ft ~3 min
Grocery Bockwinkel's 822 ft ~4 min
Grocery Whole Foods Market 908 ft ~4 min
255 East Grand Avenue, Chicago 60611
Mo-Su 08:00-22:00
Convenience 7-Eleven 1,020 ft ~4 min
Pharmacy Walgreens 0.21 mi ~5 min
Pharmacy Walgreens 0.25 mi ~5 min
Grocery Trader Joe's 0.25 mi ~5 min
44 East Ontario Street, Chicago 60611
Mo-Su 08:00-21:00
Pharmacy Walgreens 0.26 mi ~6 min
680 North Lake Shore Drive, Chicago 60611
Convenience 7-Eleven 0.31 mi ~7 min
EV charging EVgo 0.39 mi ~8 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 |
|---|---|---|
| 071002880 | IL | Clinical Psychologist primary |
This provider holds licence 071002880 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 psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems. NUCC Health Care Provider Taxonomy, code 103TC0700X
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 | 1003021056 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 13, 2007 |
| Last updated | Jul 8, 2007 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | PH.D |
| Practice address |
233 E ERIE ST Chicago, IL 60611 (312) 337-0374 Fax (630) 762-9978 |
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 | 2 | 1 | 0 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 2 | 2 | 0 | 1 |
Sum = 34 · next multiple of 10 = 40 · 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.