Quick answers
- Does Marcus R. Kubosumi accept Medicare assignment?
- Yes. Medicare's clinician data says Marcus R. Kubosumi 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.
- What is Marcus R. Kubosumi's NPI number?
- 1639195985. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marcus R. Kubosumi works
Medicare's Facility Affiliation Data lists Marcus R. Kubosumi at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Confluence Health HospitalWenatchee, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500016
Practice locations
Addresses where Marcus R. Kubosumi is enrolled with Medicare (CMS data updated October 2, 2026).
- 1201 S Miller StWenatchee, WA 98801 (509) 662‑2208
- 314 Basin St SWEphrata, WA 98823 (509) 754‑7186
Group practices
Medicare enrollment lists Marcus R. Kubosumi as a member of these groups (CMS data updated October 2, 2026).
- Central Washington Health Services Association721 clinicians in the group
- Wenatchee Valley Hospital24 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Wenatchee
Clinicians with the same Medicare primary specialty in Wenatchee, WA — not a recommendation.
Other clinicians in Central Washington Health Services Association
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Utah School Of Medicine |
| Graduation year | 1984 (42 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639195985 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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