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Family Practice

William B. Oley Iii, MD

Works at hospitals in Red Lodge, MT · Montana

Summary

William B. Oley Iii, MD (Family Practice) is listed by Medicare at 1 hospital in Red Lodge, MT. NPI 1801994413. 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 William B. Oley Iii, 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

Family PracticePrimary specialty
YesAccepts Medicare assignment
26Years since medical school (graduated 2000)
Ohio State University College Of MedicineMedical school
MaleGender (as listed)
Memorial Hospital AssociationGroup practice

Quick answers

Which hospitals does William B. Oley Iii work at?
Medicare's official clinician data lists William B. Oley Iii at 1 hospital: Beartooth Billings Clinic. This is where the clinician works or has privileges; call the hospital to confirm.
Where does William B. Oley Iii see patients?
Medicare's clinician data lists 1 practice location in Red Lodge, MT. Call before your visit to confirm the address.
What is William B. Oley Iii's specialty?
Medicare lists Family Practice as the primary specialty.
Does William B. Oley Iii accept Medicare assignment?
Yes. Medicare's clinician data says William B. Oley Iii 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 William B. Oley Iii?
(406) 446-2345, as listed in official Medicare / NPI Registry data.
What is William B. Oley Iii's NPI number?
1801994413. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where William B. Oley Iii works

Medicare's Facility Affiliation Data lists William B. Oley Iii 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 William B. Oley Iii is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists William B. Oley Iii as a member of this group (CMS data updated 2026-10-02).

  • Memorial Hospital Association21 clinicians in the group

Specialties

Find other Family Practice doctors in Montana →

Other family doctors in Red Lodge

Clinicians with the same Medicare primary specialty in Red Lodge, MT — not a recommendation.

All family doctors in Red Lodge →

Clinician information

CredentialMD
Medical schoolOhio State University College Of Medicine
Graduation year2000
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1801994413
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