Margaret Schermerhorn, MD
Margaret Schermerhorn, MD is an Obstetrics & Gynecology Physician in Chicago, IL, registered under NPI 1003552308. 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 30, 2026. Parking is available about 0.23 mi away. The nearest transit stop is 380 ft away, served by Harrison & Paulina. If you arrive early, there is a coffee shop 0.39 mi away.
Getting here and what is nearby
Transit Harrison & Ashland 203 ft ~1 min
Transit Harrison & Ashland 294 ft ~2 min
Restaurant Au Bon Pain 299 ft ~2 min
Transit Harrison & Paulina 380 ft ~2 min
Restaurant Subway 373 ft ~2 min
1611 West Harrison Street, Chicago 60612
Mo-Fr 06:30-21:00; Sa 07:00-17:00; Su 10:00-17:00
Coffee Starbucks 526 ft ~2 min
600 South Paulina Street, Chicago
Hotel Courtyard by Marriott Chicago at Medical District / UIC 573 ft ~3 min
Convenience Papo's Express 754 ft ~3 min
1600 West Van Buren Street, Chicago 60612
Gas station BP 714 ft ~3 min
Parking Rush Staff & Student Parking 805 ft ~4 min
1625 West Flournoy Street, Chicago 60612
Parking 896 ft ~4 min
711 South Ashland Avenue
Coffee Leaf and Bean Cafe 1,010 ft ~4 min
700 South Hermitage Avenue, Chicago 60612
Hotel Hotel Chicago West Loop 0.22 mi ~5 min
Hotel Hyatt House Chicago - Medical / University District 0.23 mi ~5 min
Parking 0.23 mi ~5 min
1640 West Jackson Boulevard
Restaurant Dunkin' 0.25 mi ~5 min
Coffee FROTH 0.39 mi ~8 min
1515 West Monroe Street, Chicago 60607
Th-Sa 08:00-23:00; Su-We 08:00-19:00
Convenience 7-Eleven 0.39 mi ~8 min
Convenience Campus Market 0.41 mi ~9 min
West Taylor Street, Chicago 60607
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 |
|---|---|---|
| 125.084261 | IL | Obstetrics & Gynecology Physician primary |
This provider holds licence 125.084261 issued in IL. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Order And Referring Only - Obstetrics/gynecology
- PAC ID
- 3779021787
- Enrollment ID
- I20240821001063
Medicare enrolment is recorded as approved under the provider type Order And Referring Only - Obstetrics/gynecology. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Obstetrics & Gynecology covers
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women. NUCC Health Care Provider Taxonomy, code 207V00000X
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 | 1003552308 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 9, 2022 |
| Last updated | Jun 20, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | MD |
| Practice address |
1620 W HARRISON ST Chicago, IL 60612 (312) 942-5000 |
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 | 5 | 5 | 2 | 3 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 5 | 4 | 3 | 0 |
Sum = 42 · next multiple of 10 = 50 · check digit = 8 · actual last digit = 8
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.