Quick answers
- Which hospitals does Riley S. Grogan work at?
- Medicare's official clinician data lists Riley S. Grogan at 1 hospital: St. Patrick Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Riley S. Grogan see patients?
- Medicare's clinician data lists 1 practice location in Missoula, MT. Call before your visit to confirm the address.
- What is Riley S. Grogan's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Riley S. Grogan accept Medicare assignment?
- Yes. Medicare's clinician data says Riley S. Grogan 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 Riley S. Grogan offer telehealth?
- Medicare's clinician data says Riley S. Grogan offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Riley S. Grogan?
- (406) 327-1940, as listed in official Medicare / NPI Registry data.
- What is Riley S. Grogan's NPI number?
- 1669935631. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Riley S. Grogan works
Medicare's Facility Affiliation Data lists Riley S. Grogan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St. Patrick HospitalMissoula, MT · Acute Care Hospital · CCN 270014
Practice locations
Addresses where Riley S. Grogan is enrolled with Medicare (CMS data updated 2026-10-02).
- 500 W Broadway St, Fl 4Missoula, MT 59802 (406) 327‑1940
Group practices
Medicare enrollment lists Riley S. Grogan as a member of this group (CMS data updated 2026-10-02).
- Providence Health and Services Mt362 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Missoula
Clinicians with the same Medicare primary specialty in Missoula, MT — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Washington School Of Medicine |
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1669935631 |
| 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