Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Robert Sixto Diaz, PA-C

Individual provider Physician Assistant · NPI 1356328892

Robert Sixto Diaz, PA-C is a Physician Assistant in Richland, Washington. Qualified in 2001, 25 years ago. Practices with Apex Spine Institute, a 10-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
25
Licensed in
WA
In the registry since
2005
What do these letters mean?
PA-C — Physician Assistant, Certified
A physician assistant who holds current national certification.

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Practice location Address checks out

1050 Gilmore Ste
Richland, WA 99352
Phone: (509) 943-5300
Fax: (509) 943-5331
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence PA10004234 (WA)

Record details

NPI number1356328892
Entity typeIndividual (Type 1)
GenderMale
Credentials PA-C
Sole proprietorNo
NPI enumeratedDecember 27, 2005
Last updated in NPPESOctober 22, 2012
Mailing address1050 Gilmore, Suite, Richland, WA 99352

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 2001 (25 years in practice)
Group practice Apex Spine Institute — 10 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Richland