Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Jay Finnessy, DMD

General Practice Dentistry in Wauwatosa, WI · enumerated 2006 · practices at Dental Associates Ltd of Wisconsin.

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

National Provider Identifier

1790720720

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Registry record

Entity type Individual (Type 1)

Name Dr. John Jay Finnessy

Credential DMD

Sex Male

Practice address 11711 W Burleigh St, Wauwatosa, WI, 53222

Phone (414) 771-2345

Fax (414) 777-3839

Enumeration date Jun 16, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License WI-5060 (WI) Primary

1223G0001X General Practice Dentistry Dental Providers · License 7771 (CO) Secondary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

Other identifiers

Identifier	Type	State	Issuer
33750600	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 John Finnessy?

The National Provider Identifier (NPI) for John Finnessy is 1790720720, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Finnessy practice?

The practice location on file with NPPES is in Wauwatosa, 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.