Carson Barrett Walker, MD
Surgery Physician · Billings, MT
Carson Barrett Walker, MD is a surgery physician with a practice address in Billings, Montana, and NPI 1104453299, issued on Mar 26, 2020. Check the license (Montana MED-PHYS-LIC-158516, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Carson Barrett Walker
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- MED-PHYS-LIC-158516 MT
Self-reported in NPPES; status is on the state search - Practice location
- 2900 12TH Ave N Ste 355W, Billings, MT 59101
- Phone
- (406) 238-6470
- Enumerated
- Mar 26, 2020
- Record last updated
- Jun 25, 2025
- Fax
- (406) 238-6499
- Medicare enrollment
- Enrolled (PECOS I20250805002221); accepts Medicare assignment
- Medical or professional school
- University Of Colorado School Of Medicine, Aurora, 2020
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 136 in Montana → Look up another NPI →
Verify Carson Barrett Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license MED-PHYS-LIC-158516Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average surgery physician in 2024
113 Medicare Part D claims for 59 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 39 claims were for opioids.
Most prescribed
- Oxycodone Hcl34 claims
- Ondansetron Odt12 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: $168.72
2 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 17,103 providers of this specialty with any payment received $3,513.80 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
- Surgical Associates, PCBillings, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Carson Barrett Walker among 136 surgery physician records in Montana
Carson Barrett Walker, MD is one of 136 surgery 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 2020, is newer than 98% of them.
- NPI issued2020 · 98% of these records are older, under 1% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2020 · median 2003 among the 92 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in Montana
There are 136 surgery physician records in Montana.
All 136 in Montana → Every provider in Billings → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- George Bentzel, MDBillings, MT 591011689699621
- Timothy Dernbach, MDBillings, MT 591011962440800
- Eric Dringman, MDBillings, MT 591011245262583
- Scott Dull, MDBillings, MT 591011174634919
- John Gregory, MDBillings, MT 591011861504847
- Paul Grmoljez, MDBillings, MT 591011831241785
- Kathryn Hatch, MDBillings, MT 591011275558215
- Terry Housinger, MDBillings, MT 591011790705234
Common questions
What is Carson Barrett Walker, MD's NPI number?
Carson Barrett Walker, MD's National Provider Identifier (NPI) is 1104453299, issued on Mar 26, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Carson Barrett Walker, MD located?
The NPPES record lists a practice address at 2900 12TH Ave N Ste 355W, Billings, MT, 59101. Phone: (406) 238-6470. Providers update this record themselves, so call before visiting.
How can I verify Carson Barrett Walker, MD's license?
NPPES lists Montana license number MED-PHYS-LIC-158516, 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 Carson Barrett Walker, MD prescribe under Medicare Part D?
In 2024, Carson Barrett Walker, MD had 113 Medicare Part D claims for 59 beneficiaries; the average among surgery physician prescribers was 147. 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.