Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Clark Dale Christoffersen, DDS

General Practice Dentistry in Deer Park, WA · enumerated 2006.

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

National Provider Identifier

1558439174

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Registry record

Entity type Individual (Type 1)

Name Mr. Clark Dale Christoffersen

Credential DDS

Sex Male

Practice address 118 E Crawford, Deer Park, WA, 99006

Phone (509) 276-2421

Enumeration date Dec 1, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License DE00005057 (WA) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Other identifiers

Identifier	Type	State	Issuer
DE00005057	Other	-	DENTAL

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 Clark Christoffersen?

The National Provider Identifier (NPI) for Clark Christoffersen is 1558439174, a Type 1 (individual) record in the CMS NPPES registry.

Where does Clark Christoffersen practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.