Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Cathy Lynn Dreifuerst, AU.D.
Audiologist in Oshkosh, WI · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1750341285
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Registry record
Entity type Individual (Type 1)
Name Dr. Cathy Lynn Dreifuerst
Credential AU.D.
Sex Female
Practice address 515 S Washburn St Ste 200, Oshkosh, WI, 54904
Phone (920) 969-1768
Fax (920) 267-5222
Enumeration date Mar 27, 2006
Last updated in NPPES Oct 7, 2019
Taxonomy & licenses
231H00000X Audiologist Speech, Language and Hearing Service Providers · License 228-156 (WI) Primary
AUD · Doctor of Audiology: A licensed audiologist diagnosing and treating hearing and balance disorders.
About the AUD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 41128400 | Medicaid | WI | - |
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
Where does Cathy Dreifuerst practice?
The practice location on file with NPPES is in Oshkosh, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Cathy Dreifuerst?
The National Provider Identifier (NPI) for Cathy Dreifuerst is 1750341285, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Tamara Mischka Audiologist · Oshkosh, WI NPI 1891876553 Katie Armatoski Audiologist · Oshkosh, WI NPI 1215361167 Benjamin Johnson Otolaryngology Physician · Oshkosh, WI NPI 1508420647 Katelyn Herne Audiologist · Oshkosh, WI NPI 1114710563 Angela Lemerande Family Nurse Practitioner · Oshkosh, WI NPI 1003789041
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-10-07.