William Buck, DO
Internal Medicine Physician · Laurel, MS
William Buck, DO is an internal medicine physician with a practice address in Laurel, Mississippi, and NPI 1528647856, issued on Apr 5, 2021. Check the license (Mississippi T-4413, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- William Buck
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- T-4413 MS
Self-reported in NPPES; status is on the state search - Practice location
- 1203 Jefferson St, Laurel, MS 39440
- Phone
- (601) 649-2863
- Enumerated
- Apr 5, 2021
- Record last updated
- May 15, 2025
- Medicare enrollment
- Enrolled (PECOS I20240710004483); accepts Medicare assignment
- Medical or professional school
- William Carey University College Of Osteopathic Medicine, 2021
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 972 in Mississippi → Look up another NPI →
Also registered at 1203 Jefferson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Walter Beard, M.D.Cardiovascular Disease Physician1396032983
- James Beasley, M.D.Internal Medicine Physician1689696817
- Madison Brewer, FNP-CFamily Nurse Practitioner1679112304
- Charles Cannon, M.D.Internal Medicine Physician1841214145
Verify William Buck 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-4413Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
94 Medicare Part D claims for 40 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of 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: $109.65
1 payment: food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- South Central Clinics, IncEllisville, MS
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Buck among 972 internal medicine physician records in Mississippi
William Buck, DO is one of 972 internal medicine physician records with a practice address in Mississippi. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 75% of them.
- NPI issued2021 · 75% of these records are older, 21% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2021 · median 2008 among the 585 with a school on file
- Record last updated2025 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 internal medicine physician records list a practice address in Laurel
They are 14 of the 623 NPPES records with a practice address in Laurel, and 972 internal medicine physician records in Mississippi.
All 972 in Mississippi → Every provider in Laurel → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- James Beasley, M.D.Laurel, MS 394401689696817
- Charles Cannon, M.D.Laurel, MS 394401841214145
- Willus Horne, M.D.Laurel, MS 394401417961012
- Hamit Kumar, M.B.B.SLaurel, MS 394401174842330
- Mark Norton, M.D.Laurel, MS 394401881608495
- Alison ReddingLaurel, MS 394401205398245
- Herbert Rogers, M.D.Laurel, MS 394401720092331
- Ihtesham Shafiq, MDLaurel, MS 394401457181851
Common questions
What is William Buck, DO's NPI number?
William Buck, DO's National Provider Identifier (NPI) is 1528647856, issued on Apr 5, 2021. An NPI identifies a provider in billing; it is not a license.
Where is William Buck, DO located?
The NPPES record lists a practice address at 1203 Jefferson St, Laurel, MS, 39440. Phone: (601) 649-2863. Providers update this record themselves, so call before visiting.
How can I verify William Buck, DO's license?
NPPES lists Mississippi license number T-4413, 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 Buck, DO prescribe under Medicare Part D?
In 2024, William Buck, DO had 94 Medicare Part D claims for 40 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.