William Stewart Horsley, M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Columbus, MS
William Stewart Horsley, M.D. is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Columbus, Mississippi, and NPI 1841341369, issued on Jan 12, 2007. Check the license (Mississippi 15937, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- William Stewart Horsley
- Credential
- M.D.
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License numbers
- 15937 MS
ME170618 FL
Self-reported in NPPES; status is on the state search - Practice location
- 255 Baptist Blvd Ste 401, Columbus, MS 39705
- Phone
- (662) 244-2288
- Enumerated
- Jan 12, 2007
- Record last updated
- May 18, 2026
- Fax
- (662) 244-2289
- Medicaid ID
- 124691000 FL
- Medicare enrollment
- Enrolled (PECOS I20241010002265); accepts Medicare assignment
- Medical or professional school
- University Of Alabama School Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 48 in Mississippi → Look up another NPI →
Also registered at 255 Baptist Blvd Ste 401
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hector Dox, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1154324895
- Lauren Dunn, PA-CPhysician Assistant1497181879
- Monica Wolf, PASurgical Physician Assistant1437674793
Verify William Stewart Horsley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
Search for license 15937Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average thoracic surgery (cardiothoracic vascular surgery) physician in 2024
25 Medicare Part D claims for 12 beneficiaries, against an average of 101 among the 2,587 providers of this specialty who prescribed in Part D.
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): 76.5 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: $1,687.83
18 payments; by number, the most common kind was food and beverage; the largest payer was Atricure, Inc. The 4,047 providers of this specialty with any payment received $7,828.84 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
- Cardiothoracic And Vascular Surgical Associates PAJacksonville, FL
- Lee Health System IncFort Myers, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Stewart Horsley among 48 thoracic surgery (cardiothoracic vascular surgery) physician records in Mississippi
William Stewart Horsley, M.D. is one of 48 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in Mississippi. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 58% of them.
- NPI issued2007 · 58% of these records are older, 27% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 52% of these records are
- Graduated1989 · median 1994 among the 25 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208G00000X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in Mississippi
There are 48 thoracic surgery (cardiothoracic vascular surgery) physician records in Mississippi.
All 48 in Mississippi → Every provider in Columbus → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Edward Crocker, M.D.Columbus, MS 397051770519951
- Hector Dox, M.D.Columbus, MS 397051154324895
- Lee Roberson, M.D.Columbus, MS 397051790750065
- Donald Netherland, MDMcComb, MS 396481275601015
- David Allen, MDPascagoula, MS 395811841387727
- Hazem Barmada, MD, FRCSOcean Springs, MS 395641740203199
- Robert Johnson, MDOcean Springs, MS 395641114021722
- David Kastl, M.D.Biloxi, MS 395311679573125
Common questions
What is William Stewart Horsley, M.D.'s NPI number?
William Stewart Horsley, M.D.'s National Provider Identifier (NPI) is 1841341369, issued on Jan 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William Stewart Horsley, M.D. located?
The NPPES record lists a practice address at 255 Baptist Blvd Ste 401, Columbus, MS, 39705. Phone: (662) 244-2288. Providers update this record themselves, so call before visiting.
How can I verify William Stewart Horsley, M.D.'s license?
NPPES lists Mississippi license number 15937, 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 William Stewart Horsley, M.D. prescribe under Medicare Part D?
In 2024, William Stewart Horsley, M.D. had 25 Medicare Part D claims for 12 beneficiaries; the average among thoracic surgery (cardiothoracic vascular surgery) physician prescribers was 101. Part D covers Medicare prescriptions only.
What is William Stewart Horsley, M.D.'s MIPS final score?
The 2023 MIPS final score is 76.5 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.