Payment overview · 2025
General Payments
$2,210.78
85 reported records · 21 companies
Healthcare provider profile · identity verified
David Engler
Allopathic & Osteopathic Physicians|Allergy & Immunology|Allergy · HOUSTON, TX · NPI 1669477568
Verified facts
What the public records show
CMS Open Payments records show David Engler received $2,210.78 in general payments during 2025 across 85 reported records.
AstraZeneca Pharmaceuticals LP accounted for 11.4% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 25 associated products.
Takeda Pharmaceuticals U.S.A., Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported GAMMAGARD LIQUID as an associated drug or biological on 29 records involving 8 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Gammagard Liquid by this doctor in 2024.
These records do not establish that a payment influenced prescribing or medical care.
Separate record types
Research & Ownership
Research Payments (direct recipient): not present in the loaded data
Associated Research Funding (for example, named PI): not present in the loaded data
Ownership / Investment: not present in the loaded data
These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.
Who paid this doctor?
Companies in 2025 General Payments
| Reported company | Canonical company | Amount | Share | Records | Year |
|---|---|---|---|---|---|
| AstraZeneca Pharmaceuticals LP | Unresolved — no canonical attribution shown | $251.33 | 11.4% | 12 | 2025 |
| Takeda Pharmaceuticals U.S.A., Inc. | Unresolved — no canonical attribution shown | $241.80 | 10.9% | 8 | 2025 |
| Ionis Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $215.45 | 9.8% | 6 | 2025 |
| BioCryst US Sales Co., LLC | Unresolved — no canonical attribution shown | $196.81 | 8.9% | 9 | 2025 |
| CSL Behring | Unresolved — no canonical attribution shown | $155.68 | 7.0% | 6 | 2025 |
| PFIZER INC. | Unresolved — no canonical attribution shown | $141.64 | 6.4% | 7 | 2025 |
| Pharming Healthcare, Inc. | Unresolved — no canonical attribution shown | $138.07 | 6.2% | 5 | 2025 |
| Genentech, Inc. | Unresolved — no canonical attribution shown | $117.09 | 5.3% | 1 | 2025 |
| Blueprint Medicines Corporation | Unresolved — no canonical attribution shown | $97.90 | 4.4% | 3 | 2025 |
| Novartis Pharmaceuticals Corporation | Unresolved — no canonical attribution shown | $97.79 | 4.4% | 4 | 2025 |
| GlaxoSmithKline, LLC. | Unresolved — no canonical attribution shown | $96.10 | 4.3% | 4 | 2025 |
| Regeneron Healthcare Solutions, Inc. | Unresolved — no canonical attribution shown | $91.72 | 4.2% | 4 | 2025 |
| Amgen Inc. | Unresolved — no canonical attribution shown | $90.64 | 4.1% | 4 | 2025 |
| GENZYME CORPORATION | Unresolved — no canonical attribution shown | $49.01 | 2.2% | 2 | 2025 |
| Genentech USA, Inc. | Unresolved — no canonical attribution shown | $46.20 | 2.1% | 2 | 2025 |
| Grifols USA, LLC | Unresolved — no canonical attribution shown | $42.95 | 1.9% | 2 | 2025 |
| Galderma Laboratories, L.P. | Unresolved — no canonical attribution shown | $34.58 | 1.6% | 2 | 2025 |
| GC Biopharma USA, Inc. | Unresolved — no canonical attribution shown | $33.50 | 1.5% | 1 | 2025 |
| Optinose US, Inc. | Unresolved — no canonical attribution shown | $26.38 | 1.2% | 1 | 2025 |
| ARS Pharmaceuticals Operations, Inc. | Unresolved — no canonical attribution shown | $23.73 | 1.1% | 1 | 2025 |
| HOSPIRA, INC. | Unresolved — no canonical attribution shown | $22.41 | 1.0% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $2,210.78 | 85 |
A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.
Analysis 1 · Payment-linked products
Products named in Open Payments records
| Reported product | Type | Reported company | Related amount* | Records | Year |
|---|---|---|---|---|---|
| TEZSPIRE Normalized: tezspire |
Biological | Amgen Inc., AstraZeneca Pharmaceuticals LP | $233.70 | 10 | 2025 |
Source payment records
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| CUVITRU Normalized: cuvitru |
Biological | Takeda Pharmaceuticals U.S.A., Inc. | $226.49 | 7 | 2025 |
Source payment records
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| DAWNZERA Normalized: dawnzera |
Drug | Ionis Pharmaceuticals, Inc. | $182.13 | 5 | 2025 |
Source payment records
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| CUTAQUIG Normalized: cutaquig |
Biological | HOSPIRA, INC., PFIZER INC. | $164.05 | 8 | 2025 |
Source payment records
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| Xolair Normalized: xolair |
Biological | Genentech USA, Inc., Genentech, Inc. | $163.29 | 3 | 2025 |
Source payment records
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| ORLADEYO Normalized: orladeyo |
Drug | BioCryst US Sales Co., LLC | $163.00 | 8 | 2025 |
Source payment records
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| PANZYGA Normalized: panzyga |
Biological | PFIZER INC. | $141.64 | 7 | 2025 |
Source payment records
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| RUCONEST Normalized: ruconest |
Biological | Pharming Healthcare, Inc. | $138.07 | 5 | 2025 |
Source payment records
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| OCTAGAM IMMUNE GLOBULIN (HUMAN) Normalized: octagam immune globulin human |
Drug | PFIZER INC. | $132.47 | 6 | 2025 |
Source payment records
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| AYVAKIT Normalized: ayvakit |
Biological, Drug | Blueprint Medicines Corporation, GENZYME CORPORATION | $123.41 | 4 | 2025 |
Source payment records
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| DUPIXENT Normalized: dupixent |
Biological | GENZYME CORPORATION, Regeneron Healthcare Solutions, Inc. | $115.22 | 5 | 2025 |
Source payment records
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| TRELEGY ELLIPTA Normalized: trelegy ellipta |
Drug | GlaxoSmithKline, LLC. | $96.10 | 4 | 2025 |
Source payment records
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| AIRSUPRA Normalized: airsupra |
Drug | AstraZeneca Pharmaceuticals LP | $71.25 | 4 | 2025 |
Source payment records
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| Haegarda Normalized: haegarda |
Biological | CSL Behring | $64.84 | 3 | 2025 |
Source payment records
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| Andembry Normalized: andembry |
Biological | CSL Behring | $59.06 | 2 | 2025 |
Source payment records
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| Rhapsido Normalized: rhapsido |
Drug | Novartis Pharmaceuticals Corporation | $48.81 | 2 | 2025 |
Source payment records
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| Xembify Normalized: xembify |
Biological | Grifols USA, LLC | $42.95 | 2 | 2025 |
Source payment records
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| FASENRA Normalized: fasenra |
Biological | AstraZeneca Pharmaceuticals LP | $36.93 | 2 | 2025 |
Source payment records
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| NEMLUVIO Normalized: nemluvio |
Drug | Galderma Laboratories, L.P. | $34.58 | 2 | 2025 |
Source payment records
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| ALYGLO Normalized: alyglo |
Drug | GC Biopharma USA, Inc. | $33.50 | 1 | 2025 |
Source payment records
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| Hizentra Normalized: hizentra |
Biological | CSL Behring | $31.78 | 1 | 2025 |
Source payment records
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| Xhance Normalized: xhance |
Drug | Optinose US, Inc. | $26.38 | 1 | 2025 |
Source payment records
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| NEFFY Normalized: neffy |
Drug | ARS Pharmaceuticals Operations, Inc. | $23.73 | 1 | 2025 |
Source payment records
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| BREZTRI Normalized: breztri |
Drug | AstraZeneca Pharmaceuticals LP | $20.99 | 1 | 2025 |
Source payment records
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| TAKHZYRO Normalized: takhzyro |
Biological | Takeda Pharmaceuticals U.S.A., Inc. | $15.31 | 1 | 2025 |
Source payment records
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* Product-associated amounts are non-additive because one payment record may name more than one product.
These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.
Public prescribing for products named in payments
No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.
The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.
Analysis 2 · Same-company prescribing overlap
Drugs reported in other payments from the same company that also appear in Medicare Part D
This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.
| Paying company | Payment year | Drug reported by same entity | Open Payments evidence | Part D | Claims | Beneficiaries |
|---|---|---|---|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. Exact reporting entity; no affiliate inference |
2025 | GAMMAGARD LIQUID open payments reported associated product |
CMS Open Payments — General Payments 29 supporting records · 8 recipient NPIs · example record 1223786557 |
Gammagard Liquid · 2024 Exact normalized brand match · 1 Part D row |
18 | suppressed by CMS |
These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.
Public Medicare Part D data
Provider-and-drug rows loaded for 2024
| Brand | Generic | Claims | Beneficiaries |
|---|---|---|---|
| Epinephrine | Epinephrine | 54 | 42 |
| Azelastine Hcl | Azelastine Hcl | 48 | 19 |
| Fluticasone Propionate | Fluticasone Propionate | 39 | 14 |
| Montelukast Sodium | Montelukast Sodium | 37 | 14 |
| Ipratropium Bromide | Ipratropium Bromide | 27 | suppressed |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 21 | 13 |
| Breo Ellipta | Fluticasone/Vilanterol | 20 | suppressed |
| Dupixent Syringe | Dupilumab | 20 | suppressed |
| Gammagard Liquid | Immun Glob G(Igg)/Gly/Iga Ov50 | 18 | suppressed |
| Dupixent Pen | Dupilumab | 17 | suppressed |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 15 | suppressed |
| Spiriva Respimat | Tiotropium Bromide | 13 | suppressed |
| Famotidine | Famotidine | 12 | suppressed |
| Cyclosporine Modified | Cyclosporine, Modified | 11 | suppressed |
| Fluconazole | Fluconazole | 11 | suppressed |
Timeline
Payment and prescribing data by year
Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.
| Year | General Payments | Main payer | Explicit products | Company overlaps | Part D coverage |
|---|---|---|---|---|---|
| 2025 | $2,210.78 · 85 records | AstraZeneca Pharmaceuticals LP | AIRSUPRA, ALYGLO, AYVAKIT, Andembry, BREZTRI, CUTAQUIG, CUVITRU, DAWNZERA, DUPIXENT, FASENRA, Haegarda, Hizentra, NEFFY, NEMLUVIO, OCTAGAM IMMUNE GLOBULIN (HUMAN), ORLADEYO, PANZYGA, RUCONEST, Rhapsido, TAKHZYRO, TEZSPIRE, TRELEGY ELLIPTA, Xembify, Xhance, Xolair | 1 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- How do you evaluate evidence when you have a financial relationship with Takeda Pharmaceuticals U.S.A., Inc.?
- Are there reasonable alternatives I should understand when we discuss treatment options?
- How should I interpret the industry-payment records shown here in the context of my care?
These are general questions generated from reviewed templates. They are not personalized medical advice.
Sources and limitations
How to read this page
- Payment and Medicare prescribing data can cover different years; every comparison shows both years explicitly.
- Part D does not represent a doctor’s entire practice; it excludes many patients and is subject to CMS public-release thresholds.
- Company–drug relationships must have an auditable source, a precise relationship type, and a valid evidence period. Unresolved mappings are not published.
- Generic drug claims are not attributed to a specific manufacturer without manufacturer-level evidence.
- When a source extract is incomplete, missing rows are never treated as proof of no payments or no prescriptions.
Loaded source releases
| Dataset | Year | Publication | Source |
|---|---|---|---|
| CMS Open Payments — General Payments | 2025 | 2026-06-30 | Original source |
| Medicare Part D Prescribers by Provider and Drug | 2024 | 2026-05-06 | Original source |
| NPPES Data Dissemination V2 | current / reference data | 2026-08-10 | Original source |
Full methodology · Questions & answers · Report a possible error