Mark Walker Smith, M.D.
Specialist · Sheffield, AL
Mark Walker Smith, M.D. is a specialist with a practice address in Sheffield, Alabama, and NPI 1396715843, issued on Jan 26, 2006. Check the license (Alabama 22634, as entered in NPPES) with the Alabama board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Walker Smith
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- 22634 AL
Self-reported in NPPES; status is on the state search - Practice location
- 1015 S Jackson Hwy, Sheffield, AL 35660
- Phone
- (256) 381-5510
- Enumerated
- Jan 26, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (256) 386-5551
- Medicare enrollment
- Enrolled (PECOS I20110124000197); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 1993
- Entity
- Type 1 · individual
8 nearest specialist records → All 545 in Alabama → Look up another NPI →
Also registered at 1015 S Jackson Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frederick Holcomb, M.D.Specialist1477523272
- Kevin Walls, M.D.Urology Physician1295908507
- Melissa Wilson, CRNP, FNP-CFamily Nurse Practitioner1497632335
- Michael Yordy, M.D.Specialist1730159112
Verify Mark Walker Smith in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Alabama board licenses this profession
Search for license 22634Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average specialist in 2024
3,314 Medicare Part D claims for 713 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. 206 claims were for opioids.
Most prescribed
- Tamsulosin Hcl951 claims
- Lidocaine Hcl343 claims
- Oxybutynin Chloride Er209 claims
- Hydrocodone-Acetaminophen197 claims
- Tolterodine Tartrate Er194 claims
- Finasteride184 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): 84.7 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: $1,126.95
43 payments; by number, the most common kind was food and beverage; the largest payer was Sumitomo Pharma America, Inc. The 5,844 providers of this specialty with any payment received $4,760.79 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
- Helen Keller Specialty CareSheffield, AL
- Shoals Urological Associates PCSheffield, AL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Walker Smith among 545 specialist records in Alabama
Mark Walker Smith, M.D. is one of 545 specialist records with a practice address in Alabama. 42% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 38% newer
- In a Medicare fileYes · 42% of these records are
- In the CMS Doctors and Clinicians fileYes · 29% of these records are
- Graduated1993 · median 1991 among the 160 with a school on file
- Record last updated2026 · 82% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Alabama practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 specialist records list a practice address in Sheffield
They are 6 of the 197 NPPES records with a practice address in Sheffield, and 545 specialist records in Alabama.
All 545 in Alabama → Every provider in Sheffield → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Filomeno Gapultos, M.D.Sheffield, AL 356601700995065
- Frederick Holcomb, M.D.Sheffield, AL 356601477523272
- Kenneth Lemaster, M.D.Sheffield, AL 356601871568063
- Albert Ridgeway, MDSheffield, AL 356601326013558
- Michael Yordy, M.D.Sheffield, AL 356601730159112
- James Meckes, M.D.Muscle Shoals, AL 356611508831215
- Colin Martin, PTRussellville, AL 356531639103450
- Patricia WilliamsonHartselle, AL 356401366873424
Common questions
What is Mark Walker Smith, M.D.'s NPI number?
Mark Walker Smith, M.D.'s National Provider Identifier (NPI) is 1396715843, issued on Jan 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Walker Smith, M.D. located?
The NPPES record lists a practice address at 1015 S Jackson Hwy, Sheffield, AL, 35660. Phone: (256) 381-5510. Providers update this record themselves, so call before visiting.
How can I verify Mark Walker Smith, M.D.'s license?
NPPES lists Alabama license number 22634, as entered by the provider. Search the Alabama board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Walker Smith, M.D. prescribe under Medicare Part D?
In 2024, Mark Walker Smith, M.D. had 3,314 Medicare Part D claims for 713 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Mark Walker Smith, M.D.'s MIPS final score?
The 2023 MIPS final score is 84.7 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.