Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William J Nelson, DDS

Oral and Maxillofacial Surgery (Dentist) in Green Bay, WI · enumerated 2006.

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

National Provider Identifier

1578583654

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Registry record

Entity type Individual (Type 1)

Name William J Nelson

Credential DDS

Sex Male

Practice address 2581 Development Dr, Green Bay, WI, 54311

Phone (920) 347-0400

Fax (920) 347-0868

Enumeration date Jul 20, 2006

Last updated in NPPES Sep 29, 2008

Taxonomy & licenses

1223S0112X Oral and Maxillofacial Surgery (Dentist) Dental Providers · License 2782 (WI) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for William Nelson?

The National Provider Identifier (NPI) for William Nelson is 1578583654, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Nelson practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-29.