Quick answers
- Which hospitals does James B. Steier work at?
- Medicare's official clinician data lists James B. Steier 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 James B. Steier see patients?
- Medicare's clinician data lists 2 practice locations, including Provo, UT and Boise, ID. Call before your visit to confirm the address.
- What is James B. Steier's specialty?
- Medicare lists Rheumatology as the primary specialty.
- Does James B. Steier accept Medicare assignment?
- Yes. Medicare's clinician data says James B. Steier 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.
- Does James B. Steier offer telehealth?
- Medicare's clinician data says James B. Steier offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for James B. Steier?
- (208) 247-5050, as listed in official Medicare / NPI Registry data.
- What is James B. Steier's NPI number?
- 1255402798. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James B. Steier works
Medicare's Facility Affiliation Data lists James B. Steier 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 James B. Steier is enrolled with Medicare (CMS data updated 2026-10-02).
- 3507 N University Ave, Suite 100Provo, UT 84604
- 901 N Curtis Rd, Suite 404Boise, ID 83706 (208) 247‑5050
Group practices
Medicare enrollment lists James B. Steier as a member of these groups (CMS data updated 2026-10-02).
- Jeffrey L Mathews MD a Professional Corporation2 clinicians in the group
- Pine Valley Health LLC2 clinicians in the group
Specialties
- Rheumatologyprimary
Other rheumatologists in Utah
Clinicians with the same Medicare primary specialty in Utah — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Georgetown University School Of Medicine |
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1255402798 |
| 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