Robert Diaz, PA-C
NPI 1356328892 · Physician Assistant · Richland, WA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Diaz, PA-C is a Physician Assistant provider in Richland, WA (NPI 1356328892).
Provider details
- NPI number
- 1356328892
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- PA10004234 (WA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
561 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 209 | $109 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 105 | $141 |
| X-Ray of Lower and Sacral Spine, Minimum of 4 Views72110 | 62 | $41 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 50 | $76 |
| Mri Scan of Lower Spinal Canal Without Contrast72148 | 34 | $98 |
| X-Ray of Middle Spine, 2 Views72070 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$188 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-12-27
- Last updated
- 2012-10-22
Frequently asked questions
- What is Robert Diaz's NPI number?
- Robert Diaz's National Provider Identifier (NPI) is 1356328892, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Diaz's specialty?
- Robert Diaz is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Robert Diaz located?
- Robert Diaz's practice location on file with NPPES is 1050 Gilmore, Suite, Richland, WA 99352.
- What is Robert Diaz's phone number?
- The practice phone number listed in the NPPES registry for Robert Diaz is (509) 943-5300.
- Does Robert Diaz accept Medicare?
- Robert Diaz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Diaz's NPI active?
- Yes — Robert Diaz's NPI (1356328892) is active in the NPPES registry as of the last update on 2012-10-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.