Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Greta Bires, MD

Family Medicine Physician in Chicago, IL · enumerated 2019.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1164985040

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Registry record

Entity type Individual (Type 1)

Name Greta Bires

Credential MD

Sex Female

Practice address 259 E Erie St Ste 2150, Chicago, IL, 60611

Phone (312) 926-3627

Fax (312) 926-3858

Enumeration date Apr 9, 2019

Last updated in NPPES Oct 9, 2025

Taxonomy & licenses

207RS0010X Sports Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License MD475023 (PA) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MD475023 (PA) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 25MA12732100 (NJ) Primary

207QS0010X Sports Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License 036170447 (IL) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Greta Bires's NPI record?

Cross-check NPI 1164985040 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1164985040 active?

Yes, as of the latest NPPES snapshot, NPI 1164985040 is active (record last updated 2025-10-09).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-09.