Marshall K. Walker, M.D.
Vascular & Interventional Radiology Physician · Mobile, AL
Marshall K. Walker, M.D. is a vascular & interventional radiology physician with a practice address in Mobile, Alabama, and NPI 1619295441, issued on May 4, 2010. Check the license (Alabama MD.31143, as entered in NPPES) on the Alabama Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Marshall K. Walker
- Credential
- M.D.
- Primary taxonomy
- Vascular & Interventional Radiology Physician 2085R0204X
- License numbers
- MD.31143 AL
31143 AL
ME170526 FL
C3071 KY
24945 MS
Self-reported in NPPES; status is on the state search - Practice location
- 3610 Springhill Memorial Dr. N., Mobile, AL 36608
- Phone
- (251) 410-3600
- Enumerated
- May 4, 2010
- Record last updated
- Nov 21, 2025
- Fax
- (251) 410-3743
- Medicare enrollment
- Enrolled (PECOS I20250108001406); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest vascular & interventional radiology physician records → All 48 in Alabama → Look up another NPI →
Also registered at 3610 Springhill Memorial Dr. N.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melanie Busby, P.A.Surgical Physician Assistant1437308665
- Ross Key, P.A.Physician Assistant1578078770
Verify Marshall K. Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersAlabama Board of Medical Examiners
Search for license MD.31143Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17.7 times the Medicare Part D claims of the average vascular & interventional radiology physician in 2024
1,327 Medicare Part D claims for 274 beneficiaries, against an average of 75 among the 1,444 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims. 710 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen285 claims
- Oxycodone-Acetaminophen190 claims
- Gabapentin146 claims
- Oxycodone Hcl75 claims
- Celecoxib73 claims
- Diclofenac Sodium59 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 96.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $259.22
10 payments; by number, the most common kind was food and beverage; the largest payer was Nevro Corp. The 3,457 providers of this specialty with any payment received $7,206.73 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 2 group practices
- Mobile Open Mri LLCMobile, AL
- Radiology Imaging Specialists LLCOcala, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marshall K. Walker among 48 vascular & interventional radiology physician records in Alabama
Marshall K. Walker, M.D. is one of 48 vascular & interventional radiology physician records with a practice address in Alabama. 81% 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 60% of them.
- NPI issued2010 · 60% of these records are older, 33% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2010 · median 2008 among the 34 with a school on file
- Record last updated2025 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0204X and a Alabama practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Vascular & Interventional Radiology Physician providers in Alabama
There are 48 vascular & interventional radiology physician records in Alabama.
All 48 in Alabama → Every provider in Mobile → Vascular & Interventional Radiology Physician nationwide →
The 8 vascular & interventional radiology physician records with the nearest ZIP codes
- Charles Gaston, M.D.Mobile, AL 366071073990644
- Austin Trupp, MDMobile, AL 366071902251853
- Thea Moran, MDMobile, AL 366171568416378
- Patrick Patten, M.D.Mobile, AL 366171063731628
- Derek Samuels, MDMobile, AL 366171558523910
- Eric Saunders, DOMobile, AL 366171992331896
- Brad Steffler, MDMobile, AL 366171265486708
- Matthew Dobbs, MDAuburn, AL 368301497935837
Common questions
What is Marshall K. Walker, M.D.'s NPI number?
Marshall K. Walker, M.D.'s National Provider Identifier (NPI) is 1619295441, issued on May 4, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Marshall K. Walker, M.D. located?
The NPPES record lists a practice address at 3610 Springhill Memorial Dr. N., Mobile, AL, 36608. Phone: (251) 410-3600. Providers update this record themselves, so call before visiting.
How can I verify Marshall K. Walker, M.D.'s license?
NPPES lists Alabama license number MD.31143, as entered by the provider. Search the Alabama Board of Medical Examiners at https://www.albme.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marshall K. Walker, M.D. prescribe under Medicare Part D?
In 2024, Marshall K. Walker, M.D. had 1,327 Medicare Part D claims for 274 beneficiaries; the average among vascular & interventional radiology physician prescribers was 75. Part D covers Medicare prescriptions only.
What is Marshall K. Walker, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.