NPPES file of Aug 9, 2026

William A. Thomas, M.D.

Neurology Physician · Lewes, DE

William A. Thomas, M.D. is a neurology physician with a practice address in Lewes, Delaware, and NPI 1700825569, issued on Jun 6, 2006. Check the license (Delaware C10005030, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1700825569
Name
William A. Thomas
Credential
M.D.
Primary taxonomy
Neurology Physician 2084N0400X
License number
C10005030 DE
Self-reported in NPPES; status is on the state search
Practice location
34434 King Street Row, Lewes, DE 19958
Phone
(302) 644-8880
Enumerated
Jun 6, 2006
Record last updated
Nov 8, 2024
Fax
(302) 644-8882
Medicaid ID
0000792701 DE
Medicare enrollment
Enrolled (PECOS I20060206000540); accepts Medicare assignment
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 34434 King Street Row

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

  1. Noel Bautista, P.T.Physical Therapist1457519555
  2. Richard Hayward, PT,OMPT,OCS,CEESPhysical Therapist1184687238
  3. Betty McPeakNurse's Aide1205293545
  4. Deborah Peterman, NP-CNurse Practitioner1558358424
  5. Shalini Sehgal, M.D.Nephrology Physician1851388953
  6. Laurel Steen, PA-CPhysician Assistant1245667401

Verify William A. Thomas in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
    Search for license C10005030
    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 Delaware 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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51% more Medicare Part D claims than the average neurology physician in 2024

2,075 Medicare Part D claims for 410 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.

  1. William Thomas2,075
  2. Specialty average1,370

Most prescribed

  1. Memantine Hcl416 claims
  2. Donepezil Hcl196 claims
  3. Topiramate183 claims
  4. Gabapentin150 claims
  5. Levetiracetam148 claims
  6. Carbidopa-Levodopa129 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 MIPS final score for 2023 (Medicare payment program): 0 of 100

The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score0.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $699.25

49 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 10,858 providers of this specialty with any payment received $8,318.07 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Thomas$699.25
  2. Specialty average$8,318.07

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

  1. Beebe Physician Network Inc.Lewes, DE

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

William A. Thomas among 65 neurology physician records in Delaware

William A. Thomas, M.D. is one of 65 neurology physician records with a practice address in Delaware. 86% 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 11% of them.

  • NPI issued2006 · 11% of these records are older, 54% newer
  • In a Medicare fileYes · 86% of these records are
  • In the CMS Doctors and Clinicians fileYes · 75% of these records are
  • Graduated1991 · median 2005 among the 48 with a school on file
  • Record last updated2024 · 37% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Neurology Physician providers in Delaware

There are 65 neurology physician records in Delaware.

The 8 neurology physician records with the nearest ZIP codes

  1. Paul Peet, M.D.Lewes, DE 199581235151507
  2. Jay Dave, D.O.Milford, DE 199631215159488
  3. Raid Kofahi, MDMilford, DE 199631770580094
  4. Lawrence Kemp, M.D.Millsboro, DE 199661619916855
  5. Michael Mark, MDMillsboro, DE 199661821082892
  6. Gina Alderson, MDSeaford, DE 199731619032752
  7. Bruce Dopler, MDSeaford, DE 199731992860027
  8. Raju Maharjan, M.D.Seaford, DE 199731033367578

Common questions

What is William A. Thomas, M.D.'s NPI number?

William A. Thomas, M.D.'s National Provider Identifier (NPI) is 1700825569, issued on Jun 6, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William A. Thomas, M.D. located?

The NPPES record lists a practice address at 34434 King Street Row, Lewes, DE, 19958. Phone: (302) 644-8880. Providers update this record themselves, so call before visiting.

How can I verify William A. Thomas, M.D.'s license?

NPPES lists Delaware license number C10005030, as entered by the provider. Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does William A. Thomas, M.D. prescribe under Medicare Part D?

In 2024, William A. Thomas, M.D. had 2,075 Medicare Part D claims for 410 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.

What is William A. Thomas, M.D.'s MIPS final score?

The 2023 MIPS final score is 0 of 100. 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.