Quick answers
- Which hospitals does John Gannon work at?
- Medicare's official clinician data lists John Gannon at 5 hospitals: Bozeman Health Big Sky Medical Center, Bozeman Health Deaconess Hospital, Livingston Healthcare, Madison Valley Medical Center and St Peters Health. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John Gannon see patients?
- Medicare's clinician data lists 5 practice locations, including Bozeman, MT. Call before your visit to confirm the address.
- What is John Gannon's specialty?
- Medicare lists Urology as the primary specialty.
- Does John Gannon accept Medicare assignment?
- Yes. Medicare's clinician data says John Gannon 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 John Gannon offer telehealth?
- Medicare's clinician data says John Gannon offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for John Gannon?
- (406) 414-5000, as listed in official Medicare / NPI Registry data.
- What is John Gannon's NPI number?
- 1861634289. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John Gannon works
Medicare's Facility Affiliation Data lists John Gannon at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Bozeman Health Big Sky Medical CenterBig Sky, MT · Critical Access Hospital · CCN 271389
- Bozeman Health Deaconess HospitalBozeman, MT · Acute Care Hospital · CCN 270057
- Livingston HealthcareLivingston, MT · Critical Access Hospital · CCN 271317
- Madison Valley Medical CenterEnnis, MT · Critical Access Hospital · CCN 271329
- St Peters HealthHelena, MT · Acute Care Hospital · CCN 270003
Practice locations
Addresses where John Gannon is enrolled with Medicare (CMS data updated 2026-10-02).
- 875 S Cottonwood RdBozeman, MT 59718
- 915 Highland BlvdBozeman, MT 59715 (406) 414‑5000
- 925 Highland BlvdBozeman, MT 59715
- 925 Highland Blvd, Suite 1220Bozeman, MT 59715 (406) 414‑3780
- 931 Highland BlvdBozeman, MT 59715
Group practices
Medicare enrollment lists John Gannon as a member of this group (CMS data updated 2026-10-02).
- Bozeman Health Deaconess Hospital320 clinicians in the group
Specialties
- Urologyprimary
Other urologists in Montana
Clinicians with the same Medicare primary specialty in Montana — not a recommendation.
Clinician information
| Medical school | Medical College Of Wisconsin |
|---|---|
| Graduation year | 2009 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1861634289 |
| 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