Dr. Thomas Michael Leath , MD
Allergy & Immunology • Austin, TX
3410 Far West Blvd, Suite 146
Austin, TX 787313194
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Thomas Leath is listed in NPPES under Allergy & Immunology.
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NPI assigned on August 11, 2006; this date does not establish years in practice.
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Published CMS data list 2,339 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 95117 — Professional service for multiple injections of allergen: 1,004 service units.
- 95165 — Professional service for preparation and provision of 1 or more antigens: 815 service units.
- 95115 — Professional service for single injection of allergen: 297 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 8 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 167 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Montelukast Sodium — 43 prescription fills, including refills.
- Ipratropium Bromide — 34 prescription fills, including refills.
- Trelegy Ellipta (Fluticasone/Umeclidin/Vilanter) — 22 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 7 records in the table · Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Allergy & Immunology in Austin, TX (2024, 18 clinicians with data). Median for this group: 2,569. Middle half: 1,374 to 4,960.
Close to the middle for Medicare Part B services among clinicians listed under Allergy & Immunology in Texas (2024, 196 clinicians with data). Median for this group: 2,701. Middle half: 799 to 6,484.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 1,433 in 2020 to 2,339 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
3410 Far West Blvd
Suite 146
Austin, TX 787313194
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 1 group name: Allergy Partners Of Texas Inc. See the list
Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
University Of Texas Medical Branch At Galveston
2000
What Public CMS Data Show
Allergy & Immunology: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
227 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $36,651 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $25,898 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
259 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$18,422 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $1,519.62 across 75 records.
By nature of payment
- Food and Beverage: $1,485.62 across 74 records.
- Education: $34.00 across 1 record.
Reporting-company totals (3 largest of 24)
- GlaxoSmithKline, LLC.: $216.87 across 16 records.
- AstraZeneca Pharmaceuticals LP: $206.30 across 7 records.
- Regeneron Pharmaceuticals, Inc.: $165.36 across 12 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
26 years (graduated 2000)
CMS Doctors and Clinicians data list 2000 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished school.
What this does not show: Years since graduation
It is not the number of years in practice, and more years does not mean better care.
Source: CMS Doctors and Clinicians National Downloadable File.
NPI first issued
2006
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Accepts Medicare assignment
CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
Dr. Leath has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists Dr. Leath as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Austin and Texas
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Allergy & Immunology in Austin, TX (2024, 18 clinicians with data). Median for this group: 2,569. Middle half: 1,374 to 4,960.
Close to the middle for clinicians listed under Allergy & Immunology in Texas (2024, 196 clinicians with data). Median for this group: 2,701. Middle half: 799 to 6,484.
Medicare-allowed amount
A lower Medicare-allowed amount than 60% of clinicians listed under Allergy & Immunology in Austin, TX (2024, 18 clinicians with data). Median for this group: $46,156. Middle half: $34,745 to $119,875.
Close to the middle for clinicians listed under Allergy & Immunology in Texas (2024, 196 clinicians with data). Median for this group: $43,229. Middle half: $18,543 to $93,441.
Paid by Medicare
A lower Medicare payment amount than 70% of clinicians listed under Allergy & Immunology in Austin, TX (2024, 18 clinicians with data). Median for this group: $35,304. Middle half: $25,362 to $91,798.
Close to the middle for clinicians listed under Allergy & Immunology in Texas (2024, 196 clinicians with data). Median for this group: $33,209. Middle half: $13,706 to $69,821.
Medicare Part D prescriptions
Fewer Part D prescriptions than 80% of clinicians listed under Allergy & Immunology in Austin, TX (2024, 19 clinicians with data). Median for this group: 462. Middle half: 286 to 730.
Fewer Part D prescriptions than 70% of clinicians listed under Allergy & Immunology in Texas (2024, 228 clinicians with data). Median for this group: 401. Middle half: 162 to 744.
Part D drug cost
A lower Part D drug cost than 85% of clinicians listed under Allergy & Immunology in Austin, TX (2024, 19 clinicians with data). Median for this group: $118,375. Middle half: $76,501 to $226,672.
A lower Part D drug cost than 80% of clinicians listed under Allergy & Immunology in Texas (2024, 228 clinicians with data). Median for this group: $119,050. Middle half: $32,459 to $262,419.
28 active clinicians are listed under Allergy & Immunology with a practice address in Austin, TX (331 in Texas).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Austin
32.1% of these 28 clinicians have the CMS telehealth indicator.
67.9% of these 28 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services increased 63% from 1,433 in 2020 to 2,339 in 2024.
- 2020: 1,433
- 2021: 1,584
- 2022: 2,314
- 2023: 2,242
- 2024: 2,339
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Medicare-allowed amount
Medicare-allowed amount increased 55% from $23,646 in 2020 to $36,651 in 2024.
- 2020: $23,646
- 2021: $32,116
- 2022: $41,920
- 2023: $38,275
- 2024: $36,651
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Paid by Medicare
Paid by Medicare increased 66% from $15,567 in 2020 to $25,898 in 2024.
- 2020: $15,567
- 2021: $22,854
- 2022: $30,336
- 2023: $27,479
- 2024: $25,898
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 17% from 200 in 2020 to 167 in 2024.
- 2020: 200
- 2021: 185
- 2022: 166
- 2023: 191
- 2024: 167
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30-day fills
30-day fills stayed about the same: 267 in 2020 and 259 in 2024.
- 2020: 267
- 2021: 263
- 2022: 265
- 2023: 303
- 2024: 259
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Part D drug cost
Part D drug cost decreased 15% from $21,658 in 2020 to $18,422 in 2024.
- 2020: $21,658
- 2021: $17,008
- 2022: $16,519
- 2023: $16,679
- 2024: $18,422
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Industry payments (Open Payments)
Industry payments (Open Payments) increased 10% from $1,378.94 in 2021 to $1,519.62 in 2025.
- 2021: $1,378.94
- 2022: $1,152.84
- 2023: $1,534.20
- 2024: $1,691.13
- 2025: $1,519.62
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2025 (payments made January 1 – December 31, 2025): 75 records totaling $1,519.62.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| AstraZeneca Pharmaceuticals LP |
Food and Beverage
In-kind items and services
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AIRSUPRA | General | $94.51 |
| Ionis Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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DAWNZERA | General | $38.06 |
| CSL Behring |
Food and Beverage
In-kind items and services
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Hizentra | General | $34.93 |
| Genentech, Inc. |
Food and Beverage
In-kind items and services
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Xolair | General | $34.55 |
| Amgen Inc. |
Education
In-kind items and services
|
— | General | $34.00 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $33.62 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $33.06 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $32.79 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
|
— | General | $32.70 |
| CSL Behring |
Food and Beverage
In-kind items and services
|
Hizentra | General | $31.89 |
| Inspire Medical Systems, Inc. |
Food and Beverage
In-kind items and services
|
INSPIRE | General | $30.15 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $29.52 |
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
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HYQVIA | General | $28.77 |
| Optinose US, Inc. |
Food and Beverage
In-kind items and services
|
Xhance | General | $28.01 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
|
— | General | $27.73 |
| Blueprint Medicines Corporation |
Food and Beverage
Cash or cash equivalent
|
AYVAKIT | General | $27.47 |
| Ionis Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
DAWNZERA | General | $26.76 |
| Novartis Pharmaceuticals Corporation |
Food and Beverage
In-kind items and services
|
— | General | $26.55 |
| Sanofi and Genzyme US Companies |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $26.11 |
| Genentech, Inc. |
Food and Beverage
In-kind items and services
|
Xolair | General | $25.51 |
| ALK-Abello, Inc |
Food and Beverage
In-kind items and services
|
Grastek | General | $25.07 |
| Regeneron Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
|
DUPIXENT | General | $24.74 |
| ARS Pharmaceuticals Operations, Inc. |
Food and Beverage
In-kind items and services
|
NEFFY | General | $23.97 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
|
TRELEGY ELLIPTA | General | $23.86 |
| GlaxoSmithKline, LLC. |
Food and Beverage
In-kind items and services
|
TRELEGY ELLIPTA | General | $23.60 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2018–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2019–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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95117
Professional service for multiple injections of allergen
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1,004 | 124 | $52.00 | $12.24 |
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95165
Professional service for preparation and provision of 1 or more antigens
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815 | 28 | $35.00 | $14.44 |
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95115
Professional service for single injection of allergen
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297 | 49 | $40.00 | $10.26 |
|
96372
Injection of drug or substance under skin or into muscle
|
106 | 19 | $70.00 | $13.94 |
|
99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
|
42 | 40 | $195.00 | $87.68 |
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96160
Administration and interpretation of patient-focused health risk assessment
|
39 | 33 | $34.00 | $2.98 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
25 | 24 | $284.00 | $123.18 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
|
11 | 11 | $242.00 | $108.25 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Montelukast Sodium | Montelukast Sodium | 43 | 2,730 | $312.95 | 11 |
| Ipratropium Bromide | Ipratropium Bromide | 34 | 1,455 | $1,345.80 | 14 |
| Trelegy Ellipta | Fluticasone/Umeclidin/Vilanter | 22 | 750 | $15,228.24 | — |
| Fluticasone Propionate | Fluticasone Propionate | 21 | 1,110 | $346.22 | — |
| Azelastine Hcl | Azelastine Hcl | 21 | 780 | $521.56 | — |
| Prednisone | Prednisone | 14 | 82 | $24.66 | 12 |
| Wixela Inhub | Fluticasone Propion/Salmeterol | 12 | 360 | $643.04 | — |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2023-10-31NUCC Taxonomy Code: 207K00000X
An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.
NUCC Taxonomy Code: 2080P0201X
A pediatrician who specializes in the diagnosis and treatment of allergies, allergic reactions, and immunologic diseases in children.
NUCC Taxonomy Code: 207KA0200X
A physician who specializes in the diagnosis, treatment, and management of allergies.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - ALLERGY/IMMUNOLOGY
I20070124000294
TX
2466453196
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Medicare Group Practice Enrollments
Source: CMS Doctors and Clinicians National Downloadable File
Allergy Partners Of Texas Inc
3410 Far W Blvd, Austin, TX 787313167
Phone: 5123490777
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Allergy & Immunology
Doctor of Medicine (M.D.)
Allergy & Immunology
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at PO BOX 603725, CHARLOTTE, NC 282603725 (Tel: 8285752625)
Pediatrics (license number reported to NPPES: TX M4273)
Registered at DEPT. 453 PO BOX 1000, MEMPHIS, TN 381480001 (Tel: 8285752625)
NPI status registered as active in NPPES database
Registered at 3410 FAR WEST BLVD, SUITE 146, AUSTIN, TX 787313194 (Tel: 5123490777)
Registered at 3410 FAR WEST BLVD, SUITE 146, AUSTIN, TX 787313194 (Tel: 5123490777)
Recorded as THOMAS LEATH, M. D.
Allergy & Immunology (license number reported to NPPES: TX M4273)
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Allergy & Immunology Specialists in Austin
- Dr. Gary Albertson, DO
- Dr. Douglas Barstow, MD
- Dr. Robert Cook, MD
- Dr. Paul Vigo, MD
- Dr. Neha Reshamwala, MD
- Dr. Amulya Amirneni, MD
Mailing Address
Po Box 603725
Charlotte, NC 282603725
Phone: 8285752625