Quick answers
- Which hospitals does Katy Holder work at?
- Medicare's official clinician data lists Katy Holder at 3 hospitals: Saint Alphonsus Medical Center - Nampa, Saint Alphonsus Regional Medical Center and St Luke's Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Katy Holder see patients?
- Medicare's clinician data lists 2 practice locations, including Boise, ID and Meridian, ID. Call before your visit to confirm the address.
- What is Katy Holder's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Katy Holder accept Medicare assignment?
- Yes. Medicare's clinician data says Katy Holder accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Katy Holder?
- (208) 639-4900, as listed in official Medicare / NPI Registry data.
- What is Katy Holder's NPI number?
- 1427143346. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Katy Holder works
Medicare's Facility Affiliation Data lists Katy Holder at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Saint Alphonsus Medical Center - NampaNampa, ID · Acute Care Hospital · CCN 130013
- Saint Alphonsus Regional Medical CenterBoise, ID · Acute Care Hospital · CCN 130007
- St Luke's Regional Medical CenterBoise, ID · Acute Care Hospital · CCN 130006
Practice locations
Addresses where Katy Holder is enrolled with Medicare (CMS data updated 2026-10-02).
- 222 N 2nd St, Suite 115Boise, ID 83702 (208) 639‑4900
- 2855 E Magic View DrMeridian, ID 83642 (208) 639‑4900
Group practices
Medicare enrollment lists Katy Holder as a member of this group (CMS data updated 2026-10-02).
- Idaho Urologic Institute PA20 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.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2006 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1427143346 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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