Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Byrne Rademaker, M.D.

Anesthesiology Physician in Louisville, KY · enumerated 2005.

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

National Provider Identifier

1033103973

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Registry record

Entity type Individual (Type 1)

Name Dr. John Byrne Rademaker

Credential M.D.

Sex Male

Practice address 3920 Dutchmans Ln, Louisville, KY, 40207

Phone (502) 259-6710

Fax (502) 259-6704

Enumeration date Sep 7, 2005

Last updated in NPPES Dec 8, 2022

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 01046769 (IN) Secondary

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 26478 (KY) 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
000000064679	Other	IN	ANTHEM OF INDIANA
000000064679	Other	IN	HEALTHLINK
000000064679	Other	IN	ONE NATION BENEFIT
000000064679	Other	KY	ANTHEM OF KENTUCKY
000000064679	Other	IN	INDIANA COMPREHENSIVE
129703800	Other	IN	BLACK LUNG PROGRAM
000000064679	Other	IN	UNICARE
134960B	Other	IN	UNICARE MEDICARE
200024520	Medicaid	IN	-
2439494000	Other	IN	PASSPORT ADVANTAGE
64264781	Medicaid	KY	-
129703800	Other	IN	US DEPT OF LABOR
200024520	Other	IN	MANAGED HEALTH SERVICES
050067688	Other	IN	RAILROAD MEDICARE
1161027	Other	KY	PASSPORT
200024520	Other	IN	MDWISE HOOSIER ALLIANCE
000000064679	Other	IN	ANTHEM MEDICAID
000000064679	Other	IN	ANTHEM SENION ADVANTAGE

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

Is NPI 1033103973 active?

Yes, as of the latest NPPES snapshot, NPI 1033103973 is active (record last updated 2022-12-08).

How do I verify John Rademaker's NPI record?

Cross-check NPI 1033103973 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-08.