Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Neurosurgery

Dewey Thoms, MD

Works at hospitals in Great Falls, MT · Montana

Summary

Dewey Thoms, MD (Neurosurgery) is listed by Medicare at 1 hospital in Great Falls, MT. NPI 1235557968. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Dewey Thoms, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

NeurosurgeryPrimary specialty
YesAccepts Medicare assignment
12Years since medical school (graduated 2014)
Louisiana State University School Of Medicine In ShreveportMedical school
MaleGender (as listed)
Benefis Hospitals IncGroup practice

Quick answers

Which hospitals does Dewey Thoms work at?
Medicare's official clinician data lists Dewey Thoms at 1 hospital: Benefis Hospitals Inc. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Dewey Thoms see patients?
Medicare's clinician data lists 2 practice locations, including Great Falls, MT. Call before your visit to confirm the address.
What is Dewey Thoms's specialty?
Medicare lists Neurosurgery as the primary specialty.
Does Dewey Thoms accept Medicare assignment?
Yes. Medicare's clinician data says Dewey Thoms 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 Dewey Thoms?
(406) 455-5000, as listed in official Medicare / NPI Registry data.
What is Dewey Thoms's NPI number?
1235557968. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Dewey Thoms works

Medicare's Facility Affiliation Data lists Dewey Thoms at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Dewey Thoms is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Dewey Thoms as a member of this group (CMS data updated 2026-10-02).

  • Benefis Hospitals Inc384 clinicians in the group

Specialties

Find other Neurosurgery doctors in Montana →

Other neurosurgeons in Great Falls

Clinicians with the same Medicare primary specialty in Great Falls, MT — not a recommendation.

All neurosurgeons in Great Falls →

Clinician information

CredentialMD
Medical schoolLouisiana State University School Of Medicine In Shreveport
Graduation year2014
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1235557968
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians