Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark W Larson, M.D.
Specialist in Ellensburg, WA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1194784090
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark W Larson
Credential M.D.
Sex Male
Practice address 716 E Manitoba Ave, Ellensburg, WA, 98926
Phone (509) 925-3151
Enumeration date Mar 20, 2006
Last updated in NPPES May 15, 2025
Taxonomy & licenses
207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MD00035733 (WA) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 8219073 | Medicaid | WA | - |
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.
Frequently asked questions
What is the NPI number for Mark Larson?
The National Provider Identifier (NPI) for Mark Larson is 1194784090, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Larson practice?
The practice location on file with NPPES is in Ellensburg, WA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → The Valley Clinic LLP Specialist · Ellensburg, WA NPI 1831194265 Jose Diaz Medical Physician Assistant · Ellensburg, WA NPI 1447231790 Janice Paxton Physician Assistant · Ellensburg, WA NPI 1558320788 Don Solberg Specialist · Ellensburg, WA NPI 1306815527 Marilynn Carr Specialist · Ellensburg, WA NPI 1831168038 Kerri Larson Nurse Practitioner · Ellensburg, WA NPI 1093774937 Bruce Herman Specialist · Ellensburg, WA NPI 1902865900 John Merrill-Steskal Specialist · Ellensburg, WA NPI 1700845609
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-15.