Quick answers
- Does Mary Hollowell accept Medicare assignment?
- Yes. Medicare's clinician data says Mary Hollowell 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 Mary Hollowell's NPI number?
- 1699409748. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mary Hollowell works
Medicare's Facility Affiliation Data lists Mary Hollowell 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.
- Saint Alphonsus Medical Center OntarioOntario, OR · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 380052
- Saint Alphonsus Regional Medical CenterBoise, ID · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 130007
Practice locations
Addresses where Mary Hollowell is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 11; the Medicare profile lists all.
- 10583 W Lake Hazel RdBoise, ID 83709 (208) 302‑5900
- 10717 W State StStar, ID 83669 (208) 302‑6300
- 11035 Karcher RdNampa, ID 83651 (208) 302‑2100
- 1150 N Sister Catherine WayNampa, ID 83687 (208) 302‑7000
- 215 E Hawaii AveNampa, ID 83686
Group practices
Medicare enrollment lists Mary Hollowell as a member of these groups (CMS data updated October 2, 2026).
- Saint Alphonsus Regional Medical Center Inc680 clinicians in the group
- Saint Alphonsus Medical Center- Ontario Inc44 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Boise
Clinicians with the same Medicare primary specialty in Boise, ID — not a recommendation.
Other clinicians in Saint Alphonsus Regional Medical Center Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2023 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699409748 |
| 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