Raul Sergio Villarreal, M.D.
Allergy & Immunology Physician · Live Oak, TX
Raul Sergio Villarreal, M.D. is an allergy & immunology physician with a practice address in Live Oak, Texas, and NPI 1083008908, issued on Mar 28, 2015. Check the license (Texas S4411, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Raul Sergio Villarreal
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- S4411 TX
Self-reported in NPPES; status is on the state search - Practice location
- 11515 Toepperwein RD Ste 201, Live Oak, TX 78233
- Phone
- (210) 646-6978
- Enumerated
- Mar 28, 2015
- Record last updated
- Sep 18, 2025
- Fax
- (855) 919-4370
- Medicare enrollment
- Enrolled (PECOS I20200507000282); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 2015
- Entity
- Type 1 · individual
Also registered at 11515 Toepperwein RD Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Erica Garcia, APRNNurse Practitioner1063817849
- Miguel Martinez, M.D.Allergy & Immunology Physician1013091586
Verify Raul Sergio Villarreal in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license S4411Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
554 Medicare Part D claims for 162 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims.
Most prescribed
- Trelegy Ellipta99 claims
- Epinephrine71 claims
- Albuterol Sulfate Hfa43 claims
- Fluticasone Propionate40 claims
- Azelastine Hcl34 claims
- Montelukast Sodium30 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: $2,433.32
108 payments; by number, the most common kind was food and beverage; the largest payer was GlaxoSmithKline, LLC. 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.
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
- Allergy Institute OF San Antonio, P.A.Live Oak, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allergy & Immunology Physician providers in Texas
There are 327 allergy & immunology physician records in Texas.
Other allergy & immunology physician records in Texas
- Esosa Adah, MDPearland, TX1831650514
- Margaret Adair, M.D.Coppell, TX1487827820
- Fiona Adame, DOSan Antonio, TX1972168193
- Karla Adams, MDLackland A F B, TX1174646582
- Colleen Adkins, M.D.Austin, TX1689991879
- Gary Albertson, DOAustin, TX1225063951
- Noel Ales, DOGarden Ridge, TX1538159975
- Shifaa Alkotob, MDHouston, TX1992324735
- Hande Alp, MDWebster, TX1023014693
- Michael Alvares, MDGarland, TX1306055264
Common questions
What is Raul Sergio Villarreal, M.D.'s NPI number?
Raul Sergio Villarreal, M.D.'s National Provider Identifier (NPI) is 1083008908, issued on Mar 28, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Raul Sergio Villarreal, M.D. located?
The NPPES record lists a practice address at 11515 Toepperwein RD Ste 201, Live Oak, TX, 78233. Phone: (210) 646-6978. Providers update this record themselves, so call before visiting.
How can I verify Raul Sergio Villarreal, M.D.'s license?
NPPES lists Texas license number S4411, 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 Raul Sergio Villarreal, M.D. prescribe under Medicare Part D?
In 2024, Raul Sergio Villarreal, M.D. had 554 Medicare Part D claims for 162 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.