Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Neal Holzum, MD

Hospitalist Physician in O Fallon, MO · enumerated 2006.

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

National Provider Identifier

1326011271

Verified

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Registry record

Entity type Individual (Type 1)

Name Neal Holzum

Credential MD

Sex Male

Practice address 2 Progress Point Ct, Ste 101a, O Fallon, MO, 63368

Phone (636) 236-9945

Enumeration date Feb 10, 2006

Last updated in NPPES Nov 25, 2009

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 110686 (MO) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 110686 (MO) 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
205262405	Medicaid	MO	-
1326011271	Medicaid	MO	-
P00664284	Other	MO	RAILROAD MEDICARE

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 1326011271 active?

Yes, as of the latest NPPES snapshot, NPI 1326011271 is active (record last updated 2009-11-25).

How do I verify Neal Holzum's NPI record?

Cross-check NPI 1326011271 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 2009-11-25.