Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
William Marculis, D.O.
Surgery Physician in Mauston, WI · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1306833876
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Registry record
Entity type Individual (Type 1)
Name William Marculis
Credential D.O.
Sex Male
Practice address 1040 Division St, Mauston, WI, 53948
Phone (608) 847-5000
Enumeration date Sep 30, 2005
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD.
About the DO credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 30069200 | 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
What is the NPI number for William Marculis?
The National Provider Identifier (NPI) for William Marculis is 1306833876, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Marculis practice?
The practice location on file with NPPES is in Mauston, WI. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Kimberley Sabey Family Medicine Physician · Mauston, WI NPI 1497749188 Rodney Malinowski Surgery Physician · Mauston, WI NPI 1699761130 Samuel Williams Physician Assistant · Mauston, WI NPI 1871580332 Dennis Ness Family Medicine Physician · Mauston, WI NPI 1598752065 Timothy Napier Surgery Physician · Mauston, WI NPI 1952398422 James Speichinger Obstetrics & Gynecology Physician · Mauston, WI NPI 1700873270 Leon Radant Family Medicine Physician · Mauston, WI NPI 1982691457 Jane Peterson-Kattenbraker Family Medicine Physician · Mauston, WI NPI 1245227719
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.