Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Robert L Gay III, M.D.

Anesthesiology Physician in Chicago, IL · enumerated 2005.

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

National Provider Identifier

1427057298

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Registry record

Entity type Individual (Type 1)

Name Robert L Gay III

Credential M.D.

Sex Male

Practice address 1 E Erie St, Suite 300, Chicago, IL, 60611

Phone (312) 649-3939

Fax (312) 649-5747

Enumeration date Jul 14, 2005

Last updated in NPPES Sep 17, 2024

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License G184019 (CA) Secondary

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 036085978 (IL) Primary

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

Other identifiers

Identifier	Type	State	Issuer
036085978	Medicaid	IL	-

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 Robert Gay's NPI record?

Cross-check NPI 1427057298 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1427057298 active?

Yes, as of the latest NPPES snapshot, NPI 1427057298 is active (record last updated 2024-09-17).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-17.