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

Gregory Rizzo

Pediatric Dentistry in Norwell, MA · enumerated 2020.

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

National Provider Identifier

1659900645

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Registry record

Entity type Individual (Type 1)
Name Gregory Rizzo
Sex Male
Practice address Norwell, MA, 02061
Phone (781) 474-7865
Enumeration date Apr 2, 2020
Last updated in NPPES May 22, 2024

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

Taxonomy & licenses

122300000X Dentist Dental Providers · License 062672 (NY) Secondary
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
1223P0221X Pediatric Dentistry Dental Providers · License DN10000072 (MA) Primary

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 Gregory Rizzo practice?
The practice location on file with NPPES is in Norwell, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Gregory Rizzo?
The National Provider Identifier (NPI) for Gregory Rizzo is 1659900645, 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 2024-05-22.