Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Kathryn Viktoria Martin, PA
Physician Assistant in Stanford, CA · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1396355608
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Registry record
Entity type Individual (Type 1)
Name Kathryn Viktoria Martin
Credential PA
Sex Female
Practice address 1265 Welch Rd Ste 100, Stanford, CA, 94305
Phone (650) 725-6959
Enumeration date Aug 3, 2020
Last updated in NPPES Aug 3, 2020
Taxonomy & licenses
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program.
About the PA 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
What specialty is Kathryn Martin?
Kathryn Martin is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-03.