NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Leif Roger Gerritzen, DMD

General Practice Dentistry in Lacey, WA · enumerated 2017.

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

National Provider Identifier

1790203339

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Leif Roger Gerritzen
Credential DMD
Sex Male
Practice address 669 Woodland Square Loop Se, Lacey, WA, 98503
Enumeration date Sep 4, 2017
Last updated in NPPES Sep 4, 2017

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License DE60773945 (WA) Primary
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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 Leif Gerritzen practice?
The practice location on file with NPPES is in Lacey, WA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Leif Gerritzen?
The National Provider Identifier (NPI) for Leif Gerritzen is 1790203339, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-09-04.