Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William A Sacksteder, MD

Vascular Surgery Physician in Oshkosh, WI · enumerated 2006.

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

National Provider Identifier

1831110162

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Registry record

Entity type Individual (Type 1)

Name William A Sacksteder

Credential MD

Sex Male

Practice address 855 N Westhaven Dr, Oshkosh, WI, 54904

Phone (920) 303-8700

Enumeration date Jul 22, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License 47528 (WI) Primary

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
31452600	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

What is the NPI number for William Sacksteder?

The National Provider Identifier (NPI) for William Sacksteder is 1831110162, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Sacksteder practice?

The practice location on file with NPPES is in Oshkosh, 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 2007-07-08.