Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Sara Ellefson, AUD
Audiologist in Mequon, WI · enumerated 2023.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1649043688
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Registry record
Entity type Individual (Type 1)
Name Dr. Sara Ellefson
Credential AUD
Sex Female
Practice address 11649 N Port Washington Rd Ste 105, Mequon, WI, 53092
Phone (262) 241-3144
Fax (262) 241-3186
Enumeration date Nov 1, 2023
Last updated in NPPES May 19, 2025
Taxonomy & licenses
231H00000X Audiologist Speech, Language and Hearing Service Providers · License 1047-156 (WI) Primary
AUD · Doctor of Audiology: A licensed audiologist diagnosing and treating hearing and balance disorders.
About the AUD credential
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.
Frequently asked questions
How do I verify Sara Ellefson's NPI record?
Cross-check NPI 1649043688 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1649043688 active?
Yes, as of the latest NPPES snapshot, NPI 1649043688 is active (record last updated 2025-05-19).
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-19.