Quick answers
- Does Aryon M. Nielsen accept Medicare assignment?
- Yes. Medicare's clinician data says Aryon M. Nielsen 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 Aryon M. Nielsen's NPI number?
- 1477369510. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Aryon M. Nielsen works
Medicare's Facility Affiliation Data lists Aryon M. Nielsen 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.
- Marshall Medical CenterPlacerville, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050254
Practice locations
Addresses where Aryon M. Nielsen is enrolled with Medicare (CMS data updated October 2, 2026).
- 1004 Fowler Way, Suite 4Placerville, CA 95667 (530) 626‑9488
- 1095 Marshall WayPlacerville, CA 95667
- 3581 Palmer Dr, Suite 602Cameron Park, CA 95682
- 4201 Town Ctr Blvd, Bldg DEl Dorado Hills, CA 95762 (916) 905‑6378
Group practices
Medicare enrollment lists Aryon M. Nielsen as a member of this group (CMS data updated October 2, 2026).
- Marshall Medical Center176 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Placerville
Clinicians with the same Medicare primary specialty in Placerville, CA — not a recommendation.
Other clinicians in Marshall Medical Center
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| School | University Of California, Davis School Of Medicine |
| Graduation year | 2024 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1477369510 |
| 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