Robert Sixto Diaz , PA-C
Physician Assistant • Richland, WA
1050 Gilmore, Suite
Richland, WA 99352
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on December 27, 2005; this date does not establish years in practice.
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Published CMS data list 561 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 — Established patient outpatient office visit: 209 service units.
- 99204 — New patient outpatient office visit: 105 service units.
- 72110 — X-ray of lower and sacral spine, minimum of 4 views: 62 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 11 records in the table · Guide: How to read Medicare Part B data
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More Medicare Part B services than 85% of clinicians listed under Physician Assistant in Richland, WA (2024, 51 clinicians with data). Median for this group: 257. Middle half: 110 to 395.
More Medicare Part B services than 75% of clinicians listed under Physician Assistant in Washington (2024, 1,707 clinicians with data). Median for this group: 218. Middle half: 77 to 474.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
Practice Location & Contact Primary Location
1050 Gilmore, Suite
Richland, WA 99352
CMS Doctors and Clinicians lists 1 group name: Apex Spine Institute. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
2001
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
204 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $53,511 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $42,316 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Open Payments general payments, program year 2025
All general payments: $114.45 across 5 records.
By nature of payment
- Food and Beverage: $114.45 across 5 records.
Reporting-company totals
- Boston Scientific Corporation: $62.25 across 3 records.
- Globus Medical, Inc.: $37.69 across 1 record.
- BIOTRONIK NRO, Inc.: $14.51 across 1 record.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
25 years (graduated 2001)
CMS Doctors and Clinicians data list 2001 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2005
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Robert Diaz has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Robert Diaz as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Richland and Washington
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 85% of clinicians listed under Physician Assistant in Richland, WA (2024, 51 clinicians with data). Median for this group: 257. Middle half: 110 to 395.
More Medicare Part B services than 75% of clinicians listed under Physician Assistant in Washington (2024, 1,707 clinicians with data). Median for this group: 218. Middle half: 77 to 474.
Medicare-allowed amount
A higher Medicare-allowed amount than 90% of clinicians listed under Physician Assistant in Richland, WA (2024, 51 clinicians with data). Median for this group: $20,801. Middle half: $8,637 to $34,152.
A higher Medicare-allowed amount than 85% of clinicians listed under Physician Assistant in Washington (2024, 1,707 clinicians with data). Median for this group: $16,952. Middle half: $6,879 to $34,613.
Paid by Medicare
A higher Medicare payment amount than 90% of clinicians listed under Physician Assistant in Richland, WA (2024, 51 clinicians with data). Median for this group: $15,347. Middle half: $6,854 to $24,449.
A higher Medicare payment amount than 85% of clinicians listed under Physician Assistant in Washington (2024, 1,707 clinicians with data). Median for this group: $12,488. Middle half: $4,857 to $25,122.
81 active clinicians are listed under Physician Assistant with a practice address in Richland, WA (3,718 in Washington).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Richland
14.8% of these 81 clinicians have the CMS telehealth indicator.
67.9% of these 81 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
CMS data for Medicare Part B services are available for 2024 only.
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Medicare-allowed amount
CMS data for Medicare-allowed amount are available for 2024 only.
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Paid by Medicare
CMS data for Medicare payment amount are available for 2024 only.
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $187.84 in 2024 to $114.45 in 2025.
- 2024: $187.84
- 2025: $114.45
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $114.45.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Globus Medical, Inc. |
Food and Beverage
Cash or cash equivalent
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Senza | General | $37.69 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
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General - Pain Management | General | $25.07 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
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General - Pain Management | General | $19.97 |
| Boston Scientific Corporation |
Food and Beverage
In-kind items and services
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General - Pain Management | General | $17.21 |
| BIOTRONIK NRO, Inc. |
Food and Beverage
In-kind items and services
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Prospera | General | $14.51 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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209 | 134 | $453.39 | $108.79 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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105 | 105 | $589.54 | $141.43 |
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72110
X-ray of lower and sacral spine, minimum of 4 views
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62 | 62 | $410.22 | $40.62 |
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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50 | 46 | $321.23 | $75.93 |
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72148
Mri scan of lower spinal canal without contrast
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34 | 34 | $1387.94 | $98.38 |
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72070
X-ray of middle spine, 2 views
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21 | 21 | $250.71 | $23.76 |
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72195
Mri scan of pelvis without contrast
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21 | 21 | $1819.30 | $170.51 |
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95972
Electronic analysis of implanted neurostimulator generator with complex spinal cord or peripheral nerve stimulator programming
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19 | 16 | $500.00 | $47.96 |
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72050
X-ray of upper spine, 4-5 views
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16 | 16 | $428.61 | $41.82 |
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72100
X-ray of lower and sacral spine, 2-3 views
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12 | 12 | $304.40 | $29.90 |
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72170
X-ray of pelvis, 1-2 views
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12 | 12 | $209.77 | $20.38 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20040707000175
WA
5395722474
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Apex Spine Institute
821 Swift Blvd, Richland, WA 993523513
Phone: 5096065040
Apex Spine Institute
965 Goethals Dr, Richland, WA 993523527
Phone: 5096065040
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Physician Assistant - Medical
Physician Assistant (Certified)
Career & Practice History
NPI enumerated December 27, 2005.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Physician Assistants in Richland
- Heather Potter, PA-C
- Cameron Ritchie, PA-C
- Michael Perala, PA-C
- Kasshia Mcphee, MS, PA-C
- Huyen Sanders, PA-C
- Juliana Asencio, PA-C
Mailing Address
1050 Gilmore, Suite
Richland, WA 99352
Phone: 5099435300