Wallace Chester Walker, MD
Family Medicine Physician · Big Timber, MT
Wallace Chester Walker, MD is a family medicine physician with a practice address in Big Timber, Montana, and NPI 1740279389, issued on Oct 17, 2005. Check the license (Montana 6045, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Wallace Chester Walker
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 6045 MT
Self-reported in NPPES; status is on the state search - Practice location
- 225 Big Timber Loop RD, Big Timber, MT 59011
- Phone
- (406) 932-7100
- Enumerated
- Oct 17, 2005
- Record last updated
- Dec 6, 2024
- Fax
- (406) 932-7102
- Medicare enrollment
- Enrolled (PECOS I20091217000041); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1984
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 775 in Montana → Look up another NPI →
Also registered at 225 Big Timber Loop RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michelle Lizotte, MDFamily Medicine Physician1124388426
- Natasha Stenberg, RDNRegistered Dietitian1467038653
Verify Wallace Chester Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 6045Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% more Medicare Part D claims than the average family medicine physician in 2024
3,674 Medicare Part D claims for 232 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. 148 claims were for opioids.
Most prescribed
- Levothyroxine Sodium226 claims
- Lisinopril155 claims
- Simvastatin153 claims
- Atorvastatin Calcium151 claims
- Eliquis139 claims
- Tamsulosin Hcl122 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: $21.15
1 payment: food and beverage; the largest payer was Edwards Lifesciences Corporation. 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.
Bills Medicare through one group practice
- Crazy Mountain Family MedicineBig Timber, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Wallace Chester Walker among 775 family medicine physician records in Montana
Wallace Chester Walker, MD 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1984 · median 2007 among the 464 with a school on file
- Record last updated2024 · 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).
2 family medicine physician records list a practice address in Big Timber
They are 2 of the 18 NPPES records with a practice address in Big Timber, and 775 family medicine physician records in Montana.
All 775 in Montana → Every provider in Big Timber → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Michelle Lizotte, MDBig Timber, MT 590111124388426
- David Kane, MDColumbus, MT 590191164509725
- Richard Klee, MDColumbus, MT 590191144313701
- Jack Exley, MDAbsarokee, MT 590011174566301
- Charlette SmallAbsarokee, MT 590011104522796
- Geraldine Mournian, M.D.Crow Agency, MT 590221275735748
- Nipa Sinh, M.D.Crow Agency, MT 590221073740288
- James UpchurchCrow Agency, MT 590221992719462
Common questions
What is Wallace Chester Walker, MD's NPI number?
Wallace Chester Walker, MD's National Provider Identifier (NPI) is 1740279389, issued on Oct 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Wallace Chester Walker, MD located?
The NPPES record lists a practice address at 225 Big Timber Loop RD, Big Timber, MT, 59011. Phone: (406) 932-7100. Providers update this record themselves, so call before visiting.
How can I verify Wallace Chester Walker, MD's license?
NPPES lists Montana license number 6045, 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 Wallace Chester Walker, MD prescribe under Medicare Part D?
In 2024, Wallace Chester Walker, MD had 3,674 Medicare Part D claims for 232 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.