Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Katherine Elizabeth Thorson, MD
Surgery Physician in Silverdale, WA · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1407347677
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Registry record
Entity type Individual (Type 1)
Name Katherine Elizabeth Thorson
Credential MD
Sex Female
Practice address 1780 Nw Myhre Rd Ste 1220, Silverdale, WA, 98383
Phone (360) 698-4500
Fax (360) 698-6960
Enumeration date May 23, 2018
Last updated in NPPES Aug 6, 2025
Taxonomy & licenses
208C00000X Colon & Rectal Surgery Physician Allopathic & Osteopathic Physicians · License MD61667218 (WA) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD 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.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Katherine Thorson?
Katherine Thorson is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all → Kristine Lineberry Diagnostic Radiology Physician · Silverdale, WA NPI 1528092632 Robert Pallow Vascular & Interventional Radiology Physician · Silverdale, WA NPI 1265529390 Kathryn Osborne Medical Physician Assistant · Silverdale, WA NPI 1124420674 Kendra Martinez Adult Health Nurse Practitioner · Silverdale, WA NPI 1699425504
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-06.