NPPES file of Aug 9, 2026

Lawrence J. Leader, DO

Cardiovascular Disease Physician · Hattiesburg, MS

Lawrence J. Leader, DO is a cardiovascular disease physician with a practice address in Hattiesburg, Mississippi, and NPI 1508970211, issued on Aug 18, 2006. Check the license (Mississippi 14515, as entered in NPPES) on the Mississippi State Board of Medical Licensure; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1508970211
Name
Lawrence J. Leader
Credential
DO
Primary taxonomy
Cardiovascular Disease Physician 207RC0000X
License number
14515 MS
Self-reported in NPPES; status is on the state search
Practice location
415 S 28TH Ave, Hattiesburg, MS 39401
Phone
(601) 268-5800
Enumerated
Aug 18, 2006
Record last updated
Jul 20, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(601) 261-3530
Medicaid IDs
00115279 MS
1779539 LA
Medicare enrollment
Enrolled (PECOS I20050616000373); accepts Medicare assignment
Medical or professional school
Nova Southeastern College Of Osteo Medicine, 1988
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 415 S 28TH Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ralph Abraham, MDSurgery Physician1013931674
  2. Logan AbramsPerfusionist1346803061
  3. William Adcock, AGACNPCritical Care Medicine Nurse Practitioner1225894264
  4. Mansoor Ahmad, MDHospitalist Physician1154096758
  5. Mohammed Ahmed, MDHospitalist Physician1942224514
  6. Muthanna Al-Ghuraibawi, M.D.Hospitalist Physician1811622665

Verify Lawrence J. Leader in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMississippi State Board of Medical Licensure
    Search for license 14515
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Mississippi license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.1 times the Medicare Part D claims of the average cardiovascular disease physician in 2024

6,543 Medicare Part D claims for 688 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.

  1. Lawrence Leader6,543
  2. Specialty average3,078

Most prescribed

  1. Metoprolol Succinate636 claims
  2. Eliquis430 claims
  3. Clopidogrel409 claims
  4. Amlodipine Besylate362 claims
  5. Atorvastatin Calcium352 claims
  6. Isosorbide Mononitrate Er302 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: $377.49

20 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 16,686 providers of this specialty with any payment received $3,819.56 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Lawrence Leader$377.49
  2. Specialty average$3,819.56

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 4 group practices

  1. Fgh Physician BillingHattiesburg, MS
  2. Forrest County General HospitalColumbia, MS
  3. Hattiesburg Clinic PAHattiesburg, MS
  4. Walthall General HospitalTylertown, MS

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Lawrence J. Leader among 142 cardiovascular disease physician records in Mississippi

Lawrence J. Leader, DO is one of 142 cardiovascular disease physician records with a practice address in Mississippi. 92% 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 8% of them.

  • NPI issued2006 · 8% of these records are older, 34% newer
  • In a Medicare fileYes · 92% of these records are
  • In the CMS Doctors and Clinicians fileYes · 77% of these records are
  • Graduated1988 · median 1996 among the 109 with a school on file
  • Record last updated2020 · 65% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Mississippi practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Cardiovascular Disease Physician providers in Mississippi

There are 142 cardiovascular disease physician records in Mississippi.

The 8 cardiovascular disease physician records with the nearest ZIP codes

  1. Bassam Mechleb, MDHattiesburg, MS 394011063625325
  2. Wissam Mechleb, MDHattiesburg, MS 394011487841847
  3. Thomas Messer, MDHattiesburg, MS 394011639284888
  4. Rebecca Prechter, DOHattiesburg, MS 394011588169866
  5. John Lovejoy, M.D.Hattiesburg, MS 394021770528713
  6. Walter Beard, M.D.Laurel, MS 394401396032983
  7. Wassim Mouannes, MDLaurel, MS 394401780799965
  8. William Sullivan, M.D.Laurel, MS 394401659385276

Common questions

What is Lawrence J. Leader, DO's NPI number?

Lawrence J. Leader, DO's National Provider Identifier (NPI) is 1508970211, issued on Aug 18, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Lawrence J. Leader, DO located?

The NPPES record lists a practice address at 415 S 28TH Ave, Hattiesburg, MS, 39401. Phone: (601) 268-5800. Providers update this record themselves, so call before visiting.

How can I verify Lawrence J. Leader, DO's license?

NPPES lists Mississippi license number 14515, 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 Lawrence J. Leader, DO prescribe under Medicare Part D?

In 2024, Lawrence J. Leader, DO had 6,543 Medicare Part D claims for 688 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.