Johanna Wefes-potter
Johanna Wefes-potter is an Emergency Medicine Physician in Chicago, IL, registered under NPI 1003643453.
Getting there
Here is what surrounds this office in Chicago, based on OpenStreetMap data collected Sep 30, 2026. Parking is available about 0.34 mi away at Wood Street Parking Structure. The nearest transit stop is 478 ft away, served by Harrison & Ogden. A pharmacy sits 0.28 mi from the entrance (Jesse Brown VA Outpaitiant Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.24 mi away.
Getting here and what is nearby
Transit Paratransit 115 ft ~1 min
Transit Polk & Wolcott 437 ft ~2 min
Transit Harrison & Ogden 478 ft ~2 min
Hotel Hyatt Place Chicago - Medical / University District 475 ft ~2 min
Hotel Hyatt House Chicago - Medical / University District 613 ft ~3 min
Restaurant Lotus Banh Mi 635 ft ~3 min
Coffee Starbucks 862 ft ~4 min
Restaurant Chick-fil-A 839 ft ~4 min
Restaurant Jimmy John's 920 ft ~4 min
Coffee Leaf and Bean Cafe 930 ft ~4 min
700 South Hermitage Avenue, Chicago 60612
Hotel Hampton Inn & Suites Chicago Medical District UIC 0.23 mi ~5 min
Coffee Starbucks 0.24 mi ~5 min
600 South Paulina Street, Chicago
Convenience Veterans Canteen Service - Retail Store 0.27 mi ~6 min
Parking Rush Staff & Student Parking 0.27 mi ~6 min
1625 West Flournoy Street, Chicago 60612
Pharmacy Jesse Brown VA Outpaitiant Pharmacy 0.28 mi ~6 min
Parking 0.33 mi ~7 min
2125 West Ogden Avenue
Parking Wood Street Parking Structure 0.34 mi ~7 min
1100 South Wood Street
Gas station BP 0.43 mi ~9 min
Convenience Papo's Express 0.44 mi ~9 min
1600 West Van Buren Street, Chicago 60612
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 |
|---|---|---|
| 125.087442 | IL | Emergency Medicine Physician primary |
This provider holds licence 125.087442 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 Emergency Medicine covers
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury. NUCC Health Care Provider Taxonomy, code 207P00000X
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 | 1003643453 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 18, 2024 |
| Last updated | Jun 24, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
1901 W HARRISON ST Chicago, IL 60612 (847) 843-2000 |
| Mailing address |
1555 N BARRINGTON RD Hoffman Estates, IL 60169 |
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 | 6 | 4 | 3 | 4 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 4 | 6 | 4 | 1 |
Sum = 47 · next multiple of 10 = 50 · check digit = 3 · actual last digit = 3
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.