Quick answers
- Does Melissa R. Walker accept Medicare assignment?
- Yes. Medicare's clinician data says Melissa R. Walker 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 Melissa R. Walker's NPI number?
- 1285582700. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Melissa R. Walker works
Medicare's Facility Affiliation Data lists Melissa R. Walker 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.
- Adventist Health and RideoutMarysville, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050133
Practice locations
Addresses where Melissa R. Walker is enrolled with Medicare (CMS data updated October 2, 2026).
- 726 4th StMarysville, CA 95901 (530) 749‑4300
Group practices
Medicare enrollment lists Melissa R. Walker as a member of this group (CMS data updated October 2, 2026).
- Galen Inpatient Physicians PC1,077 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Marysville
Clinicians with the same Medicare primary specialty in Marysville, CA — not a recommendation.
Other clinicians in Galen Inpatient Physicians PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2025 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285582700 |
| 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