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Michael Dennis Oreilly, MD

Orthopaedic Surgery Physician in Green Bay, WI · enumerated 2006.

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

National Provider Identifier

1912923699

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Registry record

Entity type Individual (Type 1)
Name Michael Dennis Oreilly
Credential MD
Sex Male
Practice address 1715 Dousman St, Green Bay, WI, 54303
Phone (920) 496-4700
Fax (920) 496-4747
Enumeration date Jul 14, 2006
Last updated in NPPES Jul 31, 2008

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 23180 (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
30338700 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.

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Frequently asked questions

Where does Michael Oreilly practice?
The practice location on file with NPPES is in Green Bay, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Michael Oreilly?
The National Provider Identifier (NPI) for Michael Oreilly is 1912923699, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-31.