NPI registry status
Active
2026 NPPES data Pediatric Allergy/Immunology Physician NPI 1497767420 M. D.
Verify on CMS → Thomas Leath, M. D.
Pediatric Allergy/Immunology Physician in Austin, Texas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 439 in Pediatric Allergy/Immunology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
254
Medicare Part D claims · 62 beneficiaries · Pediatric Allergy/Immunology Physician avg: 374
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.7K
77 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Thomas Leath, M. D. filed 254 Medicare Part D claims in 2024 as a Pediatric Allergy/Immunology Physician in Austin, Texas, prescribing 76% generic.
- 254
- Part D claims, 2024
- 76%
- generic prescribing
- Likely
- board-certified (heuristic)
- ≥48th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Thomas Leath, M. D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1497767420), first enumerated 08/11/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 254 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Heuristic suggests board-certified status based on ABMS-eligible specialty taxonomy plus active CMS participation signals — not a direct ABMS verification.
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$1.7K in reported industry payments (77 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Texas statewide board action statistics are published annually — these figures describe aggregate state activity, not Thomas Leath, M. D.'s individual license status. Verify directly with the state medical board.
Source: TMB annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1497767420 · Pediatric Allergy/Immunology Physician
NPI-10 · ENUM-LEGACY · TAX-TRACE · RX-LIGHT · BOOK-THIN · PHOTO-ENUM
- NPI-10 1497767420
- ENUM-LEGACY 2006
- TAX-TRACE 439
- RX-LIGHT 254
- BOOK-THIN 32 in Texas
- PHOTO-ENUM Barbara Chilmonczyk,… · 2006
Thomas Leath, M. D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
254 ≥ 48th percentile 48% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
✓
Board certification likely (heuristic, not verified)
Thomas Leath, M. D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Thomas Leath, M. D.?
Quality data not reportedPrimary specialty
Pediatric Allergy/Immunology Physician
Medicare Part D claims
254 32% vs specialty avg
Specialty distribution in Texas
How Pediatric Allergy/Immunology Physician compares to other specialties among Texas providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Pediatric Allergy/Immunology Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1497767420 |
|---|---|
| Specialty | Pediatric Allergy/Immunology Physician |
| Credentials | M. D. |
| Gender | Male |
| NPI Issued | 08/11/2006 |
Hospital and facility affiliations
Facilities where Thomas Leath, M. D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Allergy Partners OF Texas Inc
Austin, TX
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Thomas Leath, M. D.. Source: openpaymentsdata.cms.gov.
Total received
$1.7K
Largest payer
AstraZeneca Pharmaceuticals LP
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - Texas TMB 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~77K Texas medical licensees in 2023 - they are NOT specific to Thomas Leath, M. D.. To verify Thomas Leath, M. D.'s current license status, search the TMB public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
344
Total board actions, Texas 2023
Across 334 cases
4.47
Actions per 1,000 licensees
Texas statewide rate
probation
Most common action type
94 cases
TMB publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Texas disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
Thomas Leath, M. D. - brand share 24.0%
Pediatric Allergy/Immunology Physician average
24% brand-name claims vs 76% generic, on 254 2024 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
254
Total Claims
$39K
Total Drug Cost
62
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 383.5
- Total Day Supply
- 10,176
- Brand vs Generic
- 24% brand / 76% generic
- Brand Drug Cost
- $31K
- Generic Drug Cost
- $8K
- Antibiotic Claims
- 20
Patient Demographics
- Average Patient Age
- 72.1 years
- Avg HCC Risk Score
- 0.92
- Gender Split
- 60% female / 40% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Thomas Leath, M. D. prescribes most
Top Medicare Part D drugs by claim count, 2024
- Montelukast Sodium
Montelukast Sodium
43 claims
- Ipratropium Bromide
Ipratropium Bromide
34 claims
- Trelegy Ellipta
Trelegy Ellipta
22 claims
- Azelastine Hcl
Azelastine Hcl
21 claims
- Fluticasone Propio…
Fluticasone Propionate
21 claims
- Prednisone 14
Prednisone
14 claims
- Wixela Inhub 12
Wixela Inhub
12 claims
| Drug | Claims |
|---|---|
| Montelukast Sodium | 43 |
| Ipratropium Bromide | 34 |
| Trelegy Ellipta Fluticasone/Umeclidin/Vilanter | 22 |
| Azelastine Hcl | 21 |
| Fluticasone Propionate | 21 |
| Prednisone | 14 |
| Wixela Inhub Fluticasone Propion/Salmeterol | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Pediatric Allergy/Immunology Physician Overview
How Thomas Leath, M. D. fits within the Pediatric Allergy/Immunology Physician landscape nationally.
439
Pediatric Allergy/Immunology Physician Providers in US
44
States with Pediatric Allergy/Immunology Physician
374
Avg Claims per Provider
Thomas Leath, M. D.'s 254 claims are below the specialty average of 374.
Nationwide Pediatric Allergy/Immunology Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Leath, both outside Texas so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Pediatric Allergy/Immunology Physician Providers in Texas
Other clinicians with the same primary specialty enrolled in Texas, drawn from the same CMS NPPES roster as Leath.
One of 32 Pediatric Allergy/Immunology Physician providers enrolled in Texas, 5 are shown here.
Dr. Joanne Allieza Acevedo
MD
League City, TX
Aikaterini Anagnostou
MD PHD
Houston, TX
Dr. John Bird
M.D.
Dallas, TX
Dr. Edward Brooks
M.D.
San Antonio, TX
Dr. Maria Buheis
MD
Houston, TX
Compare Pediatric Allergy/Immunology Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Thomas Leath, M. D.'s specialty? ▼
Thomas Leath, M. D. specializes in Pediatric Allergy/Immunology Physician and practices in Austin, Texas. Credentials: M. D..
How much does Thomas Leath, M. D. prescribe under Medicare Part D? ▼
In 2024, Thomas Leath, M. D. wrote 254 Medicare Part D claims totaling $39K in drug costs for 62 beneficiaries.
Where is Thomas Leath, M. D. located? ▼
Thomas Leath, M. D. is located at 3410 FAR WEST BLVD, Austin, TX, 78731. Phone: (512) 349-0777.
What is Thomas Leath, M. D.'s NPI number? ▼
Thomas Leath, M. D.'s National Provider Identifier (NPI) is 1497767420, issued on 08/11/2006.
Does Thomas Leath, M. D. prescribe more brand-name or generic drugs? ▼
Thomas Leath, M. D.'s prescribing is 24% brand-name and 76% generic drugs by claim count, with $31K in brand drug costs.
How many Pediatric Allergy/Immunology Physician providers are there in the US? ▼
There are 439 Pediatric Allergy/Immunology Physician providers across 44 states in the US. The average Pediatric Allergy/Immunology Physician provider writes 374 Medicare Part D claims per year.
What drugs does Thomas Leath, M. D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Thomas Leath, M. D.'s most frequently prescribed drugs include Montelukast Sodium, Ipratropium Bromide, Trelegy Ellipta. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Thomas Leath, M. D. accept Medicare? ▼
Thomas Leath, M. D. appears in CMS Medicare data with 254 Part D claims and 62 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Thomas Leath, M. D.'s credentials? ▼
Thomas Leath, M. D.'s NPI is 1497767420 with credentials M. D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of August 2026 (NPPES) / 2024 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.