Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine A. Tobin, AU.D., CCC/A

Audiologist in Fond Du Lac, WI · enumerated 2006.

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

National Provider Identifier

1588697213

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Registry record

Entity type Individual (Type 1)

Name Katherine A. Tobin

Credential AU.D., CCC/A

Sex Female

Practice address 481 E Division St, Suite 900, Fond Du Lac, WI, 54935

Phone (920) 926-1288

Enumeration date Jul 8, 2006

Last updated in NPPES Jun 15, 2010

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License 295 (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
1700119179	Medicaid	WI	-
41134000	Medicaid	WI	-
P00457648	Other	-	RR MEDICARE

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

Where does Katherine Tobin practice?

The practice location on file with NPPES is in Fond Du Lac, WI. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Katherine Tobin?

The National Provider Identifier (NPI) for Katherine Tobin is 1588697213, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-15.