Quick answers
- Does Amy K. Tierra accept Medicare assignment?
- Yes. Medicare's clinician data says Amy K. Tierra 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 Amy K. Tierra see?
- In 2024, CMS data shows 11 Original Medicare patients and 61 services for Amy K. Tierra. This counts Original Medicare only and measures volume, not quality.
- What is Amy K. Tierra's NPI number?
- 1053658724. 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 Amy K. Tierra, 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 | 11 |
|---|---|
| Services billed to Medicare | 61 |
| Different services or procedures | 4 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)48 services
Practice locations
Addresses where Amy K. Tierra is enrolled with Medicare (CMS data updated October 2, 2026).
- 1065 Bucks Lake RdQuincy, CA 95971 (530) 283‑2121
- 11603 State Ave, Suite GMarysville, WA 98271 (360) 658‑6800
- 1330 Rockefeller Ave, Suite 140Everett, WA 98201 (425) 261‑4210
- 4112 Harbour Pointe Blvd SW, Suite 100Mukilteo, WA 98275 (425) 347‑6330
Group practices
Medicare enrollment lists Amy K. Tierra as a member of these groups (CMS data updated October 2, 2026).
- Providence Health and Services- Washington529 clinicians in the group
- Plumas District Hospital43 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Quincy
Clinicians with the same Medicare primary specialty in Quincy, CA — not a recommendation.
Other clinicians in Providence Health and Services- Washington
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1053658724 |
| 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