Quick answers
- Which hospitals does Gregory S. Harrison work at?
- Medicare's official clinician data lists Gregory S. Harrison at 5 hospitals: St Luke's Elmore Medical Center, St Luke's McCall, St Luke's Nampa Medical Center, St Luke's Regional Medical Center and St Lukes Magic Valley Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory S. Harrison see patients?
- Medicare's clinician data lists 1 practice location in Boise, ID. Call before your visit to confirm the address.
- What is Gregory S. Harrison's specialty?
- Medicare lists Neurosurgery as the primary specialty.
- Does Gregory S. Harrison accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory S. Harrison 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 Gregory S. Harrison offer telehealth?
- Medicare's clinician data says Gregory S. Harrison offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Gregory S. Harrison?
- (208) 381-9384, as listed in official Medicare / NPI Registry data.
- What is Gregory S. Harrison's NPI number?
- 1104825892. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory S. Harrison works
Medicare's Facility Affiliation Data lists Gregory S. Harrison at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St Luke's Elmore Medical CenterMountain Home, ID · Critical Access Hospital · CCN 131311
- St Luke's McCallMcCall, ID · Critical Access Hospital · CCN 131312
- St Luke's Nampa Medical CenterNampa, ID · Acute Care Hospital · CCN 130071
- St Luke's Regional Medical CenterBoise, ID · Acute Care Hospital · CCN 130006
- St Lukes Magic Valley Medical CenterTwin Falls, ID · Acute Care Hospital · CCN 130002
Practice locations
Addresses where Gregory S. Harrison is enrolled with Medicare (CMS data updated 2026-10-02).
- 190 E Bannock StBoise, ID 83712 (208) 381‑9384
Group practices
Medicare enrollment lists Gregory S. Harrison as a member of this group (CMS data updated 2026-10-02).
- St Lukes Clinic-Treasure Valley LLC1,173 clinicians in the group
Specialties
- Neurosurgeryprimary
Other neurosurgeons in Boise
Clinicians with the same Medicare primary specialty in Boise, ID — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loyola University Of Chicago, Stritch School Of Medicine |
| Graduation year | 1995 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1104825892 |
| 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