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Dr. Mark Ossi, OD

Optometrist in Leesburg, FL · enumerated 2019.

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

National Provider Identifier

1245883297

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Registry record

Entity type Individual (Type 1)
Name Dr. Mark Ossi
Credential OD
Sex Male
Practice address 225 N 1st St, Leesburg, FL, 34748
Fax (352) 360-2389
Enumeration date Jul 18, 2019
Last updated in NPPES Nov 27, 2023

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OPC5696 (FL) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

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 Mark Ossi practice?
The practice location on file with NPPES is in Leesburg, FL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Ossi?
The National Provider Identifier (NPI) for Mark Ossi is 1245883297, 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 2023-11-27.