William Matthew Walker, DO
Hospitalist Physician · Evansville, IN
William Matthew Walker, DO is a hospitalist physician with a practice address in Evansville, Indiana, and NPI 1184146078, issued on Jul 12, 2017. Check the license (Indiana 02005727A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- William Matthew Walker
- Credential
- DO
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 02005727A IN
Self-reported in NPPES; status is on the state search - Practice location
- 600 Mary Street, Evansville, IN 47747
- Phone
- (812) 450-3036
- Enumerated
- Jul 12, 2017
- Record last updated
- Sep 16, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (812) 450-2193
- Medicare enrollment
- Enrolled (PECOS I20171017002224); accepts Medicare assignment
- Medical or professional school
- University Of Pikeville, Kentucky College Of Osteopathic Med, 2016
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 453 in Indiana → Look up another NPI →
Also registered at 600 Mary Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Corie Aiken, FNPNurse Practitioner1326280868
- James Alsop, D.O.Hospitalist Physician1942683263
- Samantha Anderson, CRNACertified Registered Nurse Anesthetist1093250086
- Jennifer Arnoldi, PHARMDPharmacist1083813562
- Gabriel Ballinger, CRNACertified Registered Nurse Anesthetist1689105462
- Luke Barr, M.D.Neurology Physician1942620026
Verify William Matthew Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 02005727ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% fewer Medicare Part D claims than the average hospitalist physician in 2024
482 Medicare Part D claims for 158 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 16 claims were for opioids.
Most prescribed
- Atorvastatin Calcium27 claims
- Amlodipine Besylate26 claims
- Metoprolol Succinate23 claims
- Eliquis22 claims
- Losartan Potassium17 claims
- Spironolactone17 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.
Bills Medicare through 2 group practices
- Deaconess Hospital, Inc.Henderson, KY
- Methodist Health, Inc.Henderson, KY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Matthew Walker among 453 hospitalist physician records in Indiana
William Matthew Walker, DO is one of 453 hospitalist physician records with a practice address in Indiana. 89% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 74% of them.
- NPI issued2017 · 74% of these records are older, 21% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 84% of these records are
- Graduated2016 · median 2008 among the 379 with a school on file
- Record last updated2019 · 31% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 hospitalist physician records list a practice address in Evansville
They are 56 of the 4,352 NPPES records with a practice address in Evansville, and 453 hospitalist physician records in Indiana.
All 453 in Indiana → Every provider in Evansville → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Christina Bennett, M.D.Evansville, IN 477471194092668
- Rama Chilukuri, MDEvansville, IN 477471699841874
- Roxana Donea, MDEvansville, IN 477471205898400
- Clifford Dotson, M.D.Evansville, IN 477471487689014
- Hemapriya Gopal Reddy, M.D.Evansville, IN 477471811301666
- Michael Hobson, MDEvansville, IN 477471922447135
- Ahmad Karim, M.D.Evansville, IN 477471205838414
- Tania Khalid, M.DEvansville, IN 477471326019043
Common questions
What is William Matthew Walker, DO's NPI number?
William Matthew Walker, DO's National Provider Identifier (NPI) is 1184146078, issued on Jul 12, 2017. An NPI identifies a provider in billing; it is not a license.
Where is William Matthew Walker, DO located?
The NPPES record lists a practice address at 600 Mary Street, Evansville, IN, 47747. Phone: (812) 450-3036. Providers update this record themselves, so call before visiting.
How can I verify William Matthew Walker, DO's license?
NPPES lists Indiana license number 02005727A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Matthew Walker, DO prescribe under Medicare Part D?
In 2024, William Matthew Walker, DO had 482 Medicare Part D claims for 158 beneficiaries; the average among hospitalist physician prescribers was 521. 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.