Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nancy Lynn Oldenburg

Pediatric Nurse Practitioner in Dekalb, IL · enumerated 2008.

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

National Provider Identifier

1629231964

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Registry record

Entity type Individual (Type 1)

Name Nancy Lynn Oldenburg

Sex Female

Practice address 2550 N Annie Glidden Rd, Dekalb, IL, 60115

Phone (815) 758-6673

Enumeration date Jul 7, 2008

Last updated in NPPES Jul 7, 2008

Taxonomy & licenses

363LP0200X Pediatric Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209003441 (IL) Primary

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

How do I verify Nancy Oldenburg's NPI record?

Cross-check NPI 1629231964 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1629231964 active?

Yes, as of the latest NPPES snapshot, NPI 1629231964 is active (record last updated 2008-07-07).

Other providers at this practice address

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Dekalb County Government Public Health or Welfare Agency · Dekalb, IL NPI 1548315344 Alice Gordon Women's Health Nurse Practitioner · Dekalb, IL NPI 1902057342 Greater Family Health Federally Qualified Health Center (FQHC) · Dekalb, IL NPI 1730517871

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-07.