Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

William Zachow, DO

Individual provider Family Medicine Physician · NPI 1285949560

William Zachow, DO is registered under Family Practice in Anaconda, Montana. Graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1986, 40 years ago. Practices with Community Hospital of Anaconda, a 45-clinician group and accepts Medicare assignment. Licensed in Arizona, California and Montana.

Years since qualifying
40
Trained at
At Still University of Health Sciences, College of Osteo Med, Kirksville
Licensed in
AZ, CA, MT
In the registry since
2010
Specialties on file
3
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

1102 E Commercial Ave
Anaconda, MT 59711-2718 Not confirmed with CMS for 12 years — call before visiting
Phone: (602) 790-4221
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 25906 (MT)
Family Medicine Physician Taxonomy 207Q00000X · Licence 20A11228 (CA)
Family Medicine Physician Taxonomy 207Q00000X · Licence 2324 (AZ)

Record details

NPI number1285949560
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedAugust 11, 2010
Last updated in NPPESSeptember 12, 2014

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolAT STILL UNIVERSITY OF HEALTH SCIENCES, COLLEGE OF OSTEO MED, KIRKSVILLE
Graduated 1986 (40 years in practice)
Group practice Community Hospital Of Anaconda — 45 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $201 3 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Community Hospital of Anaconda

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 45 clinicians in the practice; 12 are shown here.

Other providers in Anaconda