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

Dr. Donald R Dematteis, DDS, MS

Dentist in Federal Way, WA · enumerated 2009 · practices at Eid, Jaber, Jassar, Pllc.

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

National Provider Identifier

1366777393

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Registry record

Entity type Individual (Type 1)
Name Dr. Donald R Dematteis
Credential DDS, MS
Sex Male
Practice address Federal Way, WA, 98003
Phone (253) 838-2884
Enumeration date Oct 8, 2009
Last updated in NPPES Dec 19, 2009

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

Taxonomy & licenses

126800000X Dental Assistant Dental Providers · License DE00003923 (WA) Secondary
122300000X Dentist Dental Providers · License DE00003923 (WA) 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.

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Frequently asked questions

Where does Donald Dematteis practice?
The practice location on file with NPPES is in Federal Way, WA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Donald Dematteis?
The National Provider Identifier (NPI) for Donald Dematteis is 1366777393, 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 2009-12-19.