William Robert Walker, PA-C
Physician Assistant · Crow Agency, MT
William Robert Walker, PA-C is a physician assistant with a practice address in Crow Agency, Montana, and NPI 1013227321, issued on Oct 20, 2010. Check the license (Montana 638, as entered in NPPES) with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Robert Walker
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 638 MT
PA1676 ME
Self-reported in NPPES; status is on the state search - Practice location
- 10110 South 7650 East Road, Crow Agency, MT 59022
- Phone
- (406) 638-2626
- Enumerated
- Oct 20, 2010
- Record last updated
- Jul 21, 2022
- Fax
- (406) 638-3572
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 698 in Montana → Look up another NPI →
Verify William Robert Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this profession
Search for license 638Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average physician assistant in 2024
74 Medicare Part D claims for 66 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Cephalexin15 claims
- Doxycycline Monohydrate15 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.
William Robert Walker among 698 physician assistant records in Montana
William Robert Walker, PA-C is one of 698 physician assistant records with a practice address in Montana. 84% 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 34% of them.
- NPI issued2010 · 34% of these records are older, 64% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 74% of these records are
- Record last updated2022 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 physician assistant records list a practice address in Crow Agency
They are 3 of the 130 NPPES records with a practice address in Crow Agency, and 698 physician assistant records in Montana.
All 698 in Montana → Every provider in Crow Agency → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- David Dickinson, PA-CCrow Agency, MT 590221861586745
- Mary TruslerCrow Agency, MT 590221225716673
- Abby BymasterColumbus, MT 590191598448011
- Chelsey Clark, PA-C, RDN, CDCES,CLCBig Timber, MT 590111699172049
- Kimberley Caprata, PA-CHardin, MT 590341326085762
- Paul Murter, PHYSICIAN ASSISTANTHardin, MT 590341912126368
- Stefanie Rickhoff, PAHardin, MT 590341518509298
- Brianna SolisHarlowton, MT 590361689479149
Common questions
What is William Robert Walker, PA-C's NPI number?
William Robert Walker, PA-C's National Provider Identifier (NPI) is 1013227321, issued on Oct 20, 2010. An NPI identifies a provider in billing; it is not a license.
Where is William Robert Walker, PA-C located?
The NPPES record lists a practice address at 10110 South 7650 East Road, Crow Agency, MT, 59022. Phone: (406) 638-2626. Providers update this record themselves, so call before visiting.
How can I verify William Robert Walker, PA-C's license?
NPPES lists Montana license number 638, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.
How much does William Robert Walker, PA-C prescribe under Medicare Part D?
In 2024, William Robert Walker, PA-C had 74 Medicare Part D claims for 66 beneficiaries; the average among physician assistant prescribers was 830. 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.