NPPES file of Aug 9, 2026

William Allen Neaville, MD

Allergy & Immunology Physician · Dallas, TX

William Allen Neaville, MD is an allergy & immunology physician with a practice address in Dallas, Texas, and NPI 1326009614, issued on Mar 28, 2006. Check the license (Texas L6541, as entered in NPPES) on the Texas Medical Board; 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
1326009614
Name
William Allen Neaville
Credential
MD
Primary taxonomy
Allergy & Immunology Physician 207K00000X
License number
L6541 TX
Self-reported in NPPES; status is on the state search
Practice location
10 Medical Pkwy Ste 204, Dallas, TX 75234
Phone
(972) 661-9197
Enumerated
Mar 28, 2006
Record last updated
Apr 9, 2024
Fax
(972) 239-5526
Medicaid IDs
159167901 TX
159167903 TX
Medicare enrollment
Enrolled (PECOS I20070214000377); accepts Medicare assignment
Medical or professional school
University Of Arkansas College Of Medicine, 1997
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 10 Medical Pkwy Ste 204

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

  1. Maryam Saifi, M.DAllergy & Immunology Physician1821157942

Verify William Allen Neaville in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license L6541
    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 Texas license search

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69% fewer Medicare Part D claims than the average allergy & immunology physician in 2024

233 Medicare Part D claims for 42 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims.

  1. William Neaville233
  2. Specialty average741

Most prescribed

  1. Fluticasone Propionate26 claims
  2. Montelukast Sodium25 claims
  3. Azelastine Hcl22 claims
  4. Azelastine-Fluticasone16 claims
  5. Amoxicillin15 claims
  6. Trelegy Ellipta14 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: $951.43

41 payments; by number, the most common kind was food and beverage; the largest payer was Regeneron Healthcare Solutions, Inc. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. William Neaville$951.43
  2. Specialty average$8,321.81

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. John Allen Van Wagoner, MD, PAPlano, TX

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

William Allen Neaville among 327 allergy & immunology physician records in Texas

William Allen Neaville, MD is one of 327 allergy & immunology physician records with a practice address in Texas. 83% 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 18% of them.

  • NPI issued2006 · 18% of these records are older, 48% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated1997 · median 2003 among the 228 with a school on file
  • Record last updated2024 · 48% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Allergy & Immunology Physician providers in Texas

There are 327 allergy & immunology physician records in Texas.

The 8 allergy & immunology physician records with the nearest ZIP codes

  1. Maryam Saifi, M.DDallas, TX 752341821157942
  2. Howard Crisp, M.D.Dallas, TX 752311760608442
  3. Matthew Feldman, MDDallas, TX 752311104056027
  4. Lara Gross, MDDallas, TX 752311811331705
  5. Gladys Lange, MDDallas, TX 752311972565554
  6. Nastaran Safdarian, MDDallas, TX 752311144414434
  7. Caitlin SteeleDallas, TX 752311982383808
  8. Joseph West, MDDallas, TX 752311396972535

Common questions

What is William Allen Neaville, MD's NPI number?

William Allen Neaville, MD's National Provider Identifier (NPI) is 1326009614, issued on Mar 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Allen Neaville, MD located?

The NPPES record lists a practice address at 10 Medical Pkwy Ste 204, Dallas, TX, 75234. Phone: (972) 661-9197. Providers update this record themselves, so call before visiting.

How can I verify William Allen Neaville, MD's license?

NPPES lists Texas license number L6541, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does William Allen Neaville, MD prescribe under Medicare Part D?

In 2024, William Allen Neaville, MD had 233 Medicare Part D claims for 42 beneficiaries; the average among allergy & immunology physician prescribers was 741. 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.