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

Dr. Leo A Massaro, DDS

Q: What is the NPI number for Leo Massaro?

The National Provider Identifier (NPI) for Leo Massaro is 1720257033, a Type 1 (individual) record in the CMS NPPES registry.

Dentist in Liverpool, NY · enumerated 2008.

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

National Provider Identifier

1720257033

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Registry record

Entity type Individual (Type 1)

Name Dr. Leo A Massaro

Credential DDS

Sex Male

Practice address Liverpool, NY, 13088

Phone (315) 451-5500

Fax (315) 451-5507

Enumeration date Feb 21, 2008

Last updated in NPPES Oct 4, 2011

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

Taxonomy & licenses

122300000X Dentist Dental Providers · License 048562 (NY) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Leo Massaro practice?

The practice location on file with NPPES is in Liverpool, NY. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Leo Massaro?

The National Provider Identifier (NPI) for Leo Massaro is 1720257033, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-04.