Quick answers
- Does Ksenia J. Merska accept Medicare assignment?
- Yes. Medicare's clinician data says Ksenia J. Merska 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 Ksenia J. Merska see?
- In 2024, CMS data shows 182 Original Medicare patients and 344 services for Ksenia J. Merska. This counts Original Medicare only and measures volume, not quality.
- What is Ksenia J. Merska's NPI number?
- 1316225170. 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 Ksenia J. Merska, 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 | 182 |
|---|---|
| Services billed to Medicare | 344 |
| Different services or procedures | 45 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)80 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)49 services
- Automated urinalysis test (81003)27 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)26 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)26 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).
- High cholesterol73%
- High blood pressure68%
- Arthritis43%
- Ischemic heart disease26%
- Diabetes23%
- Anxiety20%
Practice locations
Addresses where Ksenia J. Merska is enrolled with Medicare (CMS data updated October 2, 2026).
- 10555 SE Carr RdRenton, WA 98055 (425) 656‑4211
- 400 S 43rd St, Valley Medical CenterRenton, WA 98055 (425) 656‑5550
- 4033 Talbot Rd SRenton, WA 98055 (425) 656‑5588
- 4033 Talbot Rd S, 360 Medical Arts Ctr OutpatientRenton, WA 98055 (425) 251‑5255
Group practices
Medicare enrollment lists Ksenia J. Merska as a member of this group (CMS data updated October 2, 2026).
- Vantage Radiology and Diagnostic Services, a Professional Services Cor42 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Renton
Clinicians with the same Medicare primary specialty in Renton, WA — not a recommendation.
Other clinicians in Vantage Radiology and Diagnostic Services, a Professional Services Cor
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2011 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1316225170 |
| 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