Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William J Oligmueller, MD

Family Medicine Physician in Greeley, CO · enumerated 2006.

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

National Provider Identifier

1134107865

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Registry record

Entity type Individual (Type 1)

Name Dr. William J Oligmueller

Credential MD

Sex Male

Practice address 5881 W 16th St, Greeley, CO, 80634

Phone (970) 313-2700

Fax (970) 313-2727

Enumeration date Jan 3, 2006

Last updated in NPPES Jul 2, 2013

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 30046 (CO) 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
01300466	Medicaid	CO	-
P00944891	Other	CO	MEDICARE RAILROAD CARRIER PTAN

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 1134107865 active?

Yes, as of the latest NPPES snapshot, NPI 1134107865 is active (record last updated 2013-07-02).

How do I verify William Oligmueller's NPI record?

Cross-check NPI 1134107865 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 2013-07-02.