Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Rex Arthur Yahnke
Pharmacist in Sand City, CA · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659689313
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Registry record
Entity type Individual (Type 1)
Name Rex Arthur Yahnke
Sex Male
Practice address 801 Tioga Ave, Sand City, CA, 93955
Phone (831) 899-2481
Enumeration date Sep 15, 2010
Last updated in NPPES Sep 15, 2010
Taxonomy & licenses
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 NPI 1659689313 active?
Yes, as of the latest NPPES snapshot, NPI 1659689313 is active (record last updated 2010-09-15).
How do I verify Rex Yahnke's NPI record?
Cross-check NPI 1659689313 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-09-15.