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

Dr. Alan Sezer, DDS

Q: What is the NPI number for Alan Sezer?

The National Provider Identifier (NPI) for Alan Sezer is 1023257516, a Type 1 (individual) record in the CMS NPPES registry.

Prosthodontics in Roslyn, NY · enumerated 2009.

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

National Provider Identifier

1023257516

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Registry record

Entity type Individual (Type 1)

Name Dr. Alan Sezer

Credential DDS

Sex Male

Practice address Roslyn, NY, 11576

Phone (631) 367-0364

Enumeration date Feb 6, 2009

Last updated in NPPES Feb 6, 2009

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

Taxonomy & licenses

1223P0700X Prosthodontics Dental Providers · License 036972 (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

What is the NPI number for Alan Sezer?

The National Provider Identifier (NPI) for Alan Sezer is 1023257516, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alan Sezer practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-02-06.