Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory P Holdener, MD

Diagnostic Radiology Physician in Belleville, IL · enumerated 2006.

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

National Provider Identifier

1487607982

Verified

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Registry record

Entity type Individual (Type 1)

Name Gregory P Holdener

Credential MD

Sex Male

Practice address 301 West Lincoln Street, Suite 104, Belleville, IL, 62220

Phone (618) 235-0955

Fax (618) 235-9203

Enumeration date May 18, 2006

Last updated in NPPES Oct 14, 2011

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 036082418 (IL) Primary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License R4N99 (MO) Secondary

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
36082418	Medicaid	IL	-
179892	Other	-	HEALTHLINK

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

How do I verify Gregory Holdener's NPI record?

Cross-check NPI 1487607982 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1487607982 active?

Yes, as of the latest NPPES snapshot, NPI 1487607982 is active (record last updated 2011-10-14).

Other providers at this practice address

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Paul Schroeder Diagnostic Radiology Physician · Belleville, IL NPI 1669425492 Naveen Saini Diagnostic Radiology Physician · Belleville, IL NPI 1619163433

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-14.