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William C Dannenmaier, MD

Orthopaedic Surgery Physician in Rockford, IL · enumerated 2006.

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

National Provider Identifier

1619944337

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Registry record

Entity type Individual (Type 1)
Name William C Dannenmaier
Credential MD
Sex Male
Practice address 1340 Charles St, Suite 100, Rockford, IL, 61104
Phone (779) 696-1900
Enumeration date Mar 1, 2006
Last updated in NPPES Jul 23, 2018

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 036062543 (IL) 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
036062543 Medicaid IL -

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

Is NPI 1619944337 active?
Yes, as of the latest NPPES snapshot, NPI 1619944337 is active (record last updated 2018-07-23).
How do I verify William Dannenmaier's NPI record?
Cross-check NPI 1619944337 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 2018-07-23.