Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Aaron C Spalding, MD PHD

Radiation Oncology Physician in Louisville, KY · enumerated 2006.

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

National Provider Identifier

1114983871

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Registry record

Entity type Individual (Type 1)

Name Aaron C Spalding

Credential MD PHD

Sex Male

Practice address 676 S Floyd St Fl 1, Louisville, KY, 40202

Phone (502) 629-4555

Fax (502) 629-4599

Enumeration date Apr 21, 2006

Last updated in NPPES Mar 25, 2026

Taxonomy & licenses

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 01059740A (IN) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 01059740A (IN) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 4301081806 (MI) Secondary

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 42294 (KY) Primary

Other identifiers

Identifier	Type	State	Issuer
710067120	Medicaid	KY	-
50022085	Other	KY	PASSPORT
200508490	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

Is NPI 1114983871 active?

Yes, as of the latest NPPES snapshot, NPI 1114983871 is active (record last updated 2026-03-25).

How do I verify Aaron Spalding's NPI record?

Cross-check NPI 1114983871 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-03-25.