Quick answers
- Does Mason K. Vegas accept Medicare assignment?
- Yes. Medicare's clinician data says Mason K. Vegas accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Mason K. Vegas see?
- In 2024, CMS data shows 212 Original Medicare patients and 3,935 services for Mason K. Vegas. This counts Original Medicare only and measures volume, not quality.
- What is Mason K. Vegas's NPI number?
- 1962162784. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Mason K. Vegas, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 212 |
|---|---|
| Services billed to Medicare | 3,935 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Injection, methylprednisolone acetate, 1 mg (J1010)3,120 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)128 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)63 services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)60 services
- X-ray of knee, 4 or more views (73564)59 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- Arthritis75%
- High blood pressure67%
- High cholesterol62%
- Depression26%
- Diabetes25%
- Anxiety25%
Practice locations
Addresses where Mason K. Vegas is enrolled with Medicare (CMS data updated October 2, 2026).
- 1200 E Columbia AveColville, WA 99114 (509) 684‑3701
- 212 E Central AveSpokane, WA 99208
- 413 Lilly Rd NEOlympia, WA 98506
Group practices
Medicare enrollment lists Mason K. Vegas as a member of this group (CMS data updated October 2, 2026).
- Providence Health and Services Washington784 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Colville
Clinicians with the same Medicare primary specialty in Colville, WA — not a recommendation.
Other clinicians in Providence Health and Services Washington
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1962162784 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians