NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark William Houk, D.C., D.A.B.C.O.

Chiropractor in Spokane, WA · enumerated 2005.

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

National Provider Identifier

1144205204

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mark William Houk
Credential D.C., D.A.B.C.O.
Sex Male
Practice address 9720 N Nevada St, Spokane, WA, 99218
Phone (509) 464-2273
Fax (509) 242-1954
Enumeration date Dec 13, 2005
Last updated in NPPES Nov 27, 2007

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License CH00001608 (WA) Primary
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC 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 Mark Houk?
The National Provider Identifier (NPI) for Mark Houk is 1144205204, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Houk practice?
The practice location on file with NPPES is in Spokane, WA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-27.