William Zachow, D.O.
Family Medicine Physician · Anaconda, MT
William Zachow, D.O. is a family medicine physician with a practice address in Anaconda, Montana, and NPI 1285949560, issued on Aug 11, 2010. Check the license (Montana 25906, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- William Zachow
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 25906 MT
2324 AZ
20A11228 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1102 E Commercial Ave, Anaconda, MT 59711
- Phone
- (602) 790-4221
- Enumerated
- Aug 11, 2010
- Record last updated
- Sep 12, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicaid ID
- 282947 AZ
- Medicare enrollment
- Enrolled (PECOS I20130710000510); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 1986
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 775 in Montana → Look up another NPI →
Also registered at 1102 E Commercial Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Emily Owen, MDInternal Medicine Physician1841787629
- Elizabeth Schiedermayer, MDInternal Medicine Physician1538629761
Verify William Zachow in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 25906Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% more Medicare Part D claims than the average family medicine physician in 2024
3,744 Medicare Part D claims for 230 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 292 claims were for opioids.
Most prescribed
- Lisinopril204 claims
- Atorvastatin Calcium203 claims
- Hydrocodone-Acetaminophen191 claims
- Potassium Chloride139 claims
- Levothyroxine Sodium130 claims
- Amlodipine Besylate123 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $140.85
2 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Community Hospital OF AnacondaButte, MT · Critical Access Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
William Zachow among 775 family medicine physician records in Montana
William Zachow, D.O. is one of 775 family medicine physician records with a practice address in Montana. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 67% of them.
- NPI issued2010 · 67% of these records are older, 30% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1986 · median 2007 among the 464 with a school on file
- Record last updated2014 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 family medicine physician records list a practice address in Anaconda
They are 5 of the 192 NPPES records with a practice address in Anaconda, and 775 family medicine physician records in Montana.
All 775 in Montana → Every provider in Anaconda → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Kira Conn, MDAnaconda, MT 597111548526387
- Hunter Crose, MDAnaconda, MT 597111013951060
- Matthew Graf, M.D.Anaconda, MT 597111215374905
- Annie Morrison, M.D.Anaconda, MT 597111427349315
- Morgan Blake, DOBelgrade, MT 597141841872512
- Leslee Kane, M.D.Belgrade, MT 597141326227752
- David King, MDBelgrade, MT 597141285665786
- Heather Kjerstad, MDBelgrade, MT 597141003846577
Common questions
What is William Zachow, D.O.'s NPI number?
William Zachow, D.O.'s National Provider Identifier (NPI) is 1285949560, issued on Aug 11, 2010. An NPI identifies a provider in billing; it is not a license.
Where is William Zachow, D.O. located?
The NPPES record lists a practice address at 1102 E Commercial Ave, Anaconda, MT, 59711. Phone: (602) 790-4221. Providers update this record themselves, so call before visiting.
How can I verify William Zachow, D.O.'s license?
NPPES lists Montana license number 25906, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Zachow, D.O. prescribe under Medicare Part D?
In 2024, William Zachow, D.O. had 3,744 Medicare Part D claims for 230 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.