Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. John C Heyer, DO

Q: What is the NPI number for John Heyer?

The National Provider Identifier (NPI) for John Heyer is 1750310363, a Type 1 (individual) record in the CMS NPPES registry.

Family Medicine Physician in Willowbrook, IL · enumerated 2006 · practices at Midwest Express Care 2, Inc.

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

National Provider Identifier

1750310363

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Registry record

Entity type Individual (Type 1)

Name Dr. John C Heyer

Credential DO

Sex Male

Practice address Willowbrook, IL, 60527

Phone (630) 581-5372

Enumeration date Jul 3, 2006

Last updated in NPPES Aug 5, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 036057121 (IL) Primary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 02002781A (IN) Secondary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
0090000854	Other	IL	BCBS GROUP NUMBER
100368540	Medicaid	IN	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does John Heyer practice?

The practice location on file with NPPES is in Willowbrook, IL. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for John Heyer?

The National Provider Identifier (NPI) for John Heyer is 1750310363, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-05.