Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Robert Sixto Diaz, PA-C
Physician Assistant in Richland, WA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1356328892
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Registry record
Entity type Individual (Type 1)
Name Robert Sixto Diaz
Credential PA-C
Sex Male
Practice address 1050 Gilmore, Suite, Richland, WA, 99352
Phone (509) 943-5300
Fax (509) 943-5331
Enumeration date Dec 27, 2005
Last updated in NPPES Oct 22, 2012
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA10004234 (WA) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 8359242 | 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
How do I verify Robert Diaz's NPI record?
Cross-check NPI 1356328892 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1356328892 active?
Yes, as of the latest NPPES snapshot, NPI 1356328892 is active (record last updated 2012-10-22).
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-10-22.