Quick answers
- Does James M. Chavez Muramatsu accept Medicare assignment?
- Yes. Medicare's clinician data says James M. Chavez Muramatsu 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 James M. Chavez Muramatsu's NPI number?
- 1518946144. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James M. Chavez Muramatsu works
Medicare's Facility Affiliation Data lists James M. Chavez Muramatsu 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.
- Grays Harbor Community HospitalAberdeen, WA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 500031
Practice locations
Addresses where James M. Chavez Muramatsu is enrolled with Medicare (CMS data updated October 2, 2026).
- 1400 N Laventure RdMount Vernon, WA 98273 (360) 428‑4075
- 597 Point Brown Ave NWOcean Shores, WA 98569 (360) 289‑2427
Group practices
Medicare enrollment lists James M. Chavez Muramatsu as a member of this group (CMS data updated October 2, 2026).
- Sea Mar Community Health Centers230 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Mount Vernon
Clinicians with the same Medicare primary specialty in Mount Vernon, WA — not a recommendation.
Other clinicians in Sea Mar Community Health Centers
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2003 (23 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1518946144 |
| 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