Matthew Lewis Walker, MD
Psychiatry Physician · Jackson, MS
Matthew Lewis Walker, MD is a psychiatry physician with a practice address in Jackson, Mississippi, and NPI 1063823896, issued on May 14, 2014. Check the license (Mississippi T-2876, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Matthew Lewis Walker
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- T-2876 MS
Self-reported in NPPES; status is on the state search - Practice location
- 2500 N State St, Jackson, MS 39216
- Phone
- (601) 984-5601
- Enumerated
- May 14, 2014
- Record last updated
- Jul 21, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20220801002770); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In Shreveport, 2014
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 272 in Mississippi → Look up another NPI →
Also registered at 2500 N State St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Matthew Lewis Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
Search for license T-2876Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average psychiatry physician in 2024
170 Medicare Part D claims for 31 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Quetiapine Fumarate25 claims
- Olanzapine14 claims
- Mirtazapine13 claims
- Sertraline Hcl12 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: $124.98
1 payment: food and beverage; the largest payer was Abbvie Inc. The 13,693 providers of this specialty with any payment received $4,954.93 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
- Saint Joseph's Mercy Care Services IncAtlanta, GA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Lewis Walker among 272 psychiatry physician records in Mississippi
Matthew Lewis Walker, MD is one of 272 psychiatry physician records with a practice address in Mississippi. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 63% of them.
- NPI issued2014 · 63% of these records are older, 35% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileYes · 41% of these records are
- Graduated2014 · median 2004 among the 111 with a school on file
- Record last updated2015 · 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 2084P0800X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
85 psychiatry physician records list a practice address in Jackson
They are 85 of the 6,997 NPPES records with a practice address in Jackson, and 272 psychiatry physician records in Mississippi.
All 272 in Mississippi → Every provider in Jackson → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Janet Angelo, M.D.Jackson, MS 392161316978547
- John Beddingfield, M.D.Jackson, MS 392161386663201
- Andrew Bishop, MDJackson, MS 392161881702710
- James Brister, MDJackson, MS 392161457377145
- Nancy Bryant, M.D.Jackson, MS 392161417044827
- Ray Kimble, MDJackson, MS 392161689607962
- Mark Ladner, M.D.Jackson, MS 392161487753562
- Vincent Liberto, M.D.Jackson, MS 392161184642472
Common questions
What is Matthew Lewis Walker, MD's NPI number?
Matthew Lewis Walker, MD's National Provider Identifier (NPI) is 1063823896, issued on May 14, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Lewis Walker, MD located?
The NPPES record lists a practice address at 2500 N State St, Jackson, MS, 39216. Phone: (601) 984-5601. Providers update this record themselves, so call before visiting.
How can I verify Matthew Lewis Walker, MD's license?
NPPES lists Mississippi license number T-2876, as entered by the provider. Search the Mississippi State Board of Medical Licensure at https://www.msbml.ms.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Matthew Lewis Walker, MD prescribe under Medicare Part D?
In 2024, Matthew Lewis Walker, MD had 170 Medicare Part D claims for 31 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.