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

Dr. John Damaskos, D.D.S.

General Practice Dentistry in Port Jefferson Station, NY · enumerated 2008.

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

National Provider Identifier

1689845240

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Registry record

Entity type Individual (Type 1)

Name Dr. John Damaskos

Credential D.D.S.

Sex Male

Practice address Port Jefferson Station, NY, 11776

Phone (631) 928-6684

Fax (631) 474-2105

Enumeration date Mar 21, 2008

Last updated in NPPES Mar 21, 2008

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

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 040480 (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 John Damaskos?

The National Provider Identifier (NPI) for John Damaskos is 1689845240, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Damaskos practice?

The practice location on file with NPPES is in Port Jefferson Station, 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 2008-03-21.