NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

William D. Fiorini, M.D.

Family Medicine Physician in Marysville, OH · enumerated 2006.

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

National Provider Identifier

1811961006

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Registry record

Entity type Individual (Type 1)
Name William D. Fiorini
Credential M.D.
Sex Male
Practice address Marysville, OH, 43041
Phone (937) 578-5555
Fax (937) 578-5870
Enumeration date Feb 14, 2006
Last updated in NPPES Nov 22, 2011

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

171W00000X Contractor Other Service Providers · License 35-047010 (OH) Secondary
207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 35-047010 (OH) 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
0050489 Medicaid OH -

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

What is the NPI number for William Fiorini?
The National Provider Identifier (NPI) for William Fiorini is 1811961006, a Type 1 (individual) record in the CMS NPPES registry.
Where does William Fiorini practice?
The practice location on file with NPPES is in Marysville, OH. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-22.