What is Margaret Schermerhorn's NPI number?

Margaret Schermerhorn's National Provider Identifier (NPI) is 1003552308, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Margaret Schermerhorn's specialty?

Margaret Schermerhorn is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).

Where is Margaret Schermerhorn located?

Margaret Schermerhorn's practice location on file with NPPES is 1620 W Harrison St, Chicago, IL 60612-3801.

What is Margaret Schermerhorn's phone number?

The practice phone number listed in the NPPES registry for Margaret Schermerhorn is (312) 942-5000.

Does Margaret Schermerhorn accept Medicare?

Margaret Schermerhorn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Margaret Schermerhorn's NPI active?

Yes — Margaret Schermerhorn's NPI (1003552308) is active in the NPPES registry as of the last update on 2024-06-20.

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Margaret Schermerhorn, MD

NPI 1003552308 · Obstetrics & Gynecology Physician · Chicago, IL

Margaret Schermerhorn, MD is a Obstetrics & Gynecology Physician provider in Chicago, IL (NPI 1003552308).

Provider details

NPI number: 1003552308
Entity type: Individual
Primary specialty: Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Female
Sole proprietor: Yes
License: 125.084261 (IL)

Practice location

1620 W Harrison St

Chicago, IL 60612-3801

Phone: (312) 942-5000

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Mailing address

1620 W Harrison St

Chicago, IL 60612-3801

Specialties & taxonomies

Obstetrics & Gynecology PhysicianPrimary207V00000XLicense 125.084261 (IL)
Allopathic & Osteopathic Physicians

Enrolled with Medicare as Order and Referring Only - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(61/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
4 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Enumerated: 2022-05-09
Last updated: 2024-06-20
Certified: 2024-06-18

Frequently asked questions

What is Margaret Schermerhorn's NPI number?: Margaret Schermerhorn's National Provider Identifier (NPI) is 1003552308, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Margaret Schermerhorn's specialty?: Margaret Schermerhorn is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
Where is Margaret Schermerhorn located?: Margaret Schermerhorn's practice location on file with NPPES is 1620 W Harrison St, Chicago, IL 60612-3801.
What is Margaret Schermerhorn's phone number?: The practice phone number listed in the NPPES registry for Margaret Schermerhorn is (312) 942-5000.
Does Margaret Schermerhorn accept Medicare?: Margaret Schermerhorn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Margaret Schermerhorn's NPI active?: Yes — Margaret Schermerhorn's NPI (1003552308) is active in the NPPES registry as of the last update on 2024-06-20.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions