Jeffrey Stewart Hallett, M.D.
Allergy & Immunology Physician · Round Rock, TX
Jeffrey Stewart Hallett, M.D. is an allergy & immunology physician with a practice address in Round Rock, Texas, and NPI 1275683823, issued on Jan 12, 2007. Check the license (Texas H1588, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Jeffrey Stewart Hallett
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- H1588 TX
Self-reported in NPPES; status is on the state search - Practice location
- 16000 Park Valley Drive, Round Rock, TX 78681
- Phone
- (512) 244-3422
- Enumerated
- Jan 12, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (512) 255-6829
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 327 in Texas → Look up another NPI →
Verify Jeffrey Stewart Hallett in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license H1588Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
477 Medicare Part D claims for 97 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.
Most prescribed
- Azelastine Hcl55 claims
- Fluticasone Propionate46 claims
- Azithromycin37 claims
- Trelegy Ellipta34 claims
- Azelastine-Fluticasone33 claims
- Albuterol Sulfate Hfa31 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: $1,620.09
63 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.
Jeffrey Stewart Hallett among 327 allergy & immunology physician records in Texas
Jeffrey Stewart Hallett, M.D. 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 2007, is newer than 52% of them.
- NPI issued2007 · 52% of these records are older, 36% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2007 · 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.
All 327 in Texas → Every provider in Round Rock → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Niharika Marpu, M.D.Round Rock, TX 786811861827594
- Veena Rajashekhar, M.D.Round Rock, TX 786811356342612
- Grace Tamesis, M.D., MPHRound Rock, TX 786811740288729
- Sumit Bose, M.D.Round Rock, TX 786651306163902
- Anthony Henry, M.D.Round Rock, TX 786641245232487
- Anna O'Connor, MDRound Rock, TX 786641053931345
- Gary Albertson, DOAustin, TX 787041225063951
- Alexander Alvarez, M.D.Austin, TX 787041558672691
Common questions
What is Jeffrey Stewart Hallett, M.D.'s NPI number?
Jeffrey Stewart Hallett, M.D.'s National Provider Identifier (NPI) is 1275683823, issued on Jan 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey Stewart Hallett, M.D. located?
The NPPES record lists a practice address at 16000 Park Valley Drive, Round Rock, TX, 78681. Phone: (512) 244-3422. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey Stewart Hallett, M.D.'s license?
NPPES lists Texas license number H1588, 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 Jeffrey Stewart Hallett, M.D. prescribe under Medicare Part D?
In 2024, Jeffrey Stewart Hallett, M.D. had 477 Medicare Part D claims for 97 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.