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

Family Practice

William E. Zachow, DO

Works at hospitals in Anaconda, MT · Deer Lodge, MT · Butte, MT · Montana

Summary

William E. Zachow, DO (Family Practice) is listed by Medicare at 3 hospitals in Anaconda, MT, Deer Lodge, MT and Butte, MT. NPI 1285949560. 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 E. Zachow, 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
40Years since medical school (graduated 1986)
At Still University Of Health Sciences, College Of Osteo Med, KirksvilleMedical school
MaleGender (as listed)
Community Hospital of AnacondaGroup practice

Quick answers

Which hospitals does William E. Zachow work at?
Medicare's official clinician data lists William E. Zachow at 3 hospitals: Community Hospital of Anaconda, Deer Lodge Medical Center and St James Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does William E. Zachow see patients?
Medicare's clinician data lists 1 practice location in Butte, MT. Call before your visit to confirm the address.
What is William E. Zachow's specialty?
Medicare lists Family Practice as the primary specialty.
Does William E. Zachow accept Medicare assignment?
Yes. Medicare's clinician data says William E. Zachow 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 E. Zachow?
(406) 782-2329, as listed in official Medicare / NPI Registry data.
What is William E. Zachow's NPI number?
1285949560. 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 E. Zachow works

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

Group practices

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

  • Community Hospital of Anaconda44 clinicians in the group

Specialties

Find other Family Practice doctors in Montana →

Other family doctors in Butte

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

All family doctors in Butte →

Clinician information

CredentialDO
Medical schoolAt Still University Of Health Sciences, College Of Osteo Med, Kirksville
Graduation year1986
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1285949560
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