Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Charles Groskopp, D.C.

Chiropractor in Brillion, WI · enumerated 2006.

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

National Provider Identifier

1497767909

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Registry record

Entity type Individual (Type 1)

Name Dr. William Charles Groskopp

Credential D.C.

Sex Male

Practice address 205 N Main St, Suite 3, Brillion, WI, 54110

Phone (920) 756-2151

Fax (920) 756-2152

Enumeration date Aug 13, 2006

Last updated in NPPES Aug 23, 2011

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 1608-012 (WI) Primary

DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier	Type	State	Issuer
E-30001791	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does William Groskopp practice?

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

What is the NPI number for William Groskopp?

The National Provider Identifier (NPI) for William Groskopp is 1497767909, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-08-23.