Payment overview · 2025
General Payments
$69.90
3 reported records · 3 companies
Healthcare provider profile · identity verified
David Zenk, DO
Allopathic & Osteopathic Physicians|Internal Medicine · DES PERES, MO · NPI 1194164509
Verified facts
What the public records show
CMS Open Payments records show David Zenk, DO received $69.90 in general payments during 2025 across 3 reported records.
ABBVIE INC. accounted for 40.3% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 5 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Arexvy.
ABBVIE 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 SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 38 claims for Synthroid by this doctor in 2024.
GlaxoSmithKline, LLC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported AREXVY as an associated drug or biological on 47563 records involving 28786 distinct recipient NPIs. Public Medicare Part D data also shows 20 claims for Arexvy 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 |
|---|---|---|---|---|---|
| ABBVIE INC. | Unresolved — no canonical attribution shown | $28.16 | 40.3% | 1 | 2025 |
| Abbott Laboratories | Unresolved — no canonical attribution shown | $22.91 | 32.8% | 1 | 2025 |
| GlaxoSmithKline, LLC. | Unresolved — no canonical attribution shown | $18.83 | 26.9% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $69.90 | 3 |
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 |
|---|---|---|---|---|---|
| QULIPTA Normalized: qulipta |
Drug | ABBVIE INC. | $28.16 | 1 | 2025 |
Source payment records
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| UBRELVY Normalized: ubrelvy |
Drug | ABBVIE INC. | $28.16 | 1 | 2025 |
Source payment records
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| FREESTYLE LIBRE 3 Normalized: freestyle libre 3 |
Device | Abbott Laboratories | $22.91 | 1 | 2025 |
Source payment records
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| AREXVY Normalized: arexvy |
Biological | GlaxoSmithKline, LLC. | $18.83 | 1 | 2025 |
Source payment records
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| SHINGRIX Normalized: shingrix |
Biological | GlaxoSmithKline, LLC. | $18.83 | 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
| Open Payments product | Payment year | Part D brand | Part D year | Claims | Match method | Source |
|---|---|---|---|---|---|---|
| AREXVY arexvy |
2025 | Arexvy | 2024 | 20 | exact normalized | Medicare Part D |
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 |
|---|---|---|---|---|---|---|
| ABBVIE INC. Exact reporting entity; no affiliate inference |
2025 | SYNTHROID open payments reported associated product |
CMS Open Payments — General Payments 10655 supporting records · 4881 recipient NPIs · example record 1201352636 |
Synthroid · 2024 Exact normalized brand match · 1 Part D row |
38 | 11 |
| GlaxoSmithKline, LLC. Exact reporting entity; no affiliate inference |
2025 | AREXVY open payments reported associated product |
CMS Open Payments — General Payments 47563 supporting records · 28786 recipient NPIs · example record 1190332445 |
Arexvy · 2024 Exact normalized brand match · 1 Part D row |
20 | 20 |
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 |
|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 567 | 160 |
| Losartan Potassium | Losartan Potassium | 197 | 54 |
| Levothyroxine Sodium | Levothyroxine Sodium | 189 | 54 |
| Alprazolam | Alprazolam | 179 | 56 |
| Lisinopril | Lisinopril | 174 | 55 |
| Amlodipine Besylate | Amlodipine Besylate | 162 | 51 |
| Omeprazole | Omeprazole | 141 | 42 |
| Metoprolol Succinate | Metoprolol Succinate | 136 | 43 |
| Zolpidem Tartrate | Zolpidem Tartrate | 133 | 29 |
| Pantoprazole Sodium | Pantoprazole Sodium | 129 | 38 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 128 | 43 |
| Tamsulosin Hcl | Tamsulosin Hcl | 125 | 42 |
| Metformin Hcl Er | Metformin Hcl | 120 | 40 |
| Gabapentin | Gabapentin | 108 | 33 |
| Trazodone Hcl | Trazodone Hcl | 108 | 34 |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 105 | 32 |
| Tramadol Hcl | Tramadol Hcl | 104 | 33 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 100 | 47 |
| Meloxicam | Meloxicam | 98 | 30 |
| Escitalopram Oxalate | Escitalopram Oxalate | 90 | 25 |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 90 | 28 |
| Furosemide | Furosemide | 88 | 27 |
| Spironolactone | Spironolactone | 87 | 29 |
| Simvastatin | Simvastatin | 84 | 21 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 83 | 29 |
| Eliquis | Apixaban | 80 | 24 |
| Oxycodone Hcl | Oxycodone Hcl | 77 | 17 |
| Fluticasone Propionate | Fluticasone Propionate | 74 | 25 |
| Hydrochlorothiazide | Hydrochlorothiazide | 64 | 19 |
| Ozempic | Semaglutide | 63 | 12 |
| Duloxetine Hcl | Duloxetine Hcl | 60 | 14 |
| Metformin Hcl | Metformin Hcl | 59 | 18 |
| Bupropion Xl | Bupropion Hcl | 52 | 16 |
| Allopurinol | Allopurinol | 49 | 13 |
| Breo Ellipta | Fluticasone/Vilanterol | 48 | suppressed |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 47 | 15 |
| Sertraline Hcl | Sertraline Hcl | 47 | 15 |
| Jardiance | Empagliflozin | 46 | 11 |
| Metoprolol Tartrate | Metoprolol Tartrate | 45 | 15 |
| Finasteride | Finasteride | 42 | 14 |
| Clonazepam | Clonazepam | 39 | suppressed |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 39 | suppressed |
| Montelukast Sodium | Montelukast Sodium | 39 | 12 |
| Synthroid | Levothyroxine Sodium | 38 | 11 |
| Citalopram Hbr | Citalopram Hydrobromide | 33 | suppressed |
| Lorazepam | Lorazepam | 33 | suppressed |
| Alendronate Sodium | Alendronate Sodium | 31 | 11 |
| Carvedilol | Carvedilol | 29 | 12 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 29 | suppressed |
| Fluoxetine Hcl | Fluoxetine Hcl | 29 | suppressed |
| Mirtazapine | Mirtazapine | 29 | suppressed |
| Quetiapine Fumarate | Quetiapine Fumarate | 29 | suppressed |
| Vitamin D2 | Ergocalciferol (Vitamin D2) | 29 | suppressed |
| Amitriptyline Hcl | Amitriptyline Hcl | 28 | suppressed |
| Ezetimibe | Ezetimibe | 28 | suppressed |
| Pravastatin Sodium | Pravastatin Sodium | 27 | suppressed |
| Morphine Sulfate Er | Morphine Sulfate | 26 | suppressed |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 26 | suppressed |
| Famotidine | Famotidine | 25 | suppressed |
| Atenolol | Atenolol | 24 | suppressed |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 24 | suppressed |
| Buspirone Hcl | Buspirone Hcl | 23 | suppressed |
| Clopidogrel | Clopidogrel Bisulfate | 23 | suppressed |
| Diazepam | Diazepam | 22 | 11 |
| Potassium Chloride | Potassium Chloride | 21 | suppressed |
| Triamterene-Hydrochlorothiazid | Triamterene/Hydrochlorothiazid | 21 | suppressed |
| Arexvy | Rsvpref3 Antigen/As01e/Pf | 20 | 20 |
| Glipizide | Glipizide | 20 | suppressed |
| Spiriva Handihaler | Tiotropium Bromide | 20 | suppressed |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 20 | suppressed |
| Eszopiclone | Eszopiclone | 18 | suppressed |
| Methylprednisolone | Methylprednisolone | 18 | 18 |
| Farxiga | Dapagliflozin Propanediol | 17 | suppressed |
| Prednisone | Prednisone | 17 | 11 |
| Primidone | Primidone | 17 | suppressed |
| Symbicort | Budesonide/Formoterol Fumarate | 17 | suppressed |
| Temazepam | Temazepam | 17 | suppressed |
| Topiramate | Topiramate | 17 | suppressed |
| Dextroamphetamine-Amphetamine | Dextroamphetamine/Amphetamine | 16 | suppressed |
| Donepezil Hcl | Donepezil Hcl | 16 | suppressed |
| Levetiracetam | Levetiracetam | 16 | suppressed |
| Memantine Hcl | Memantine Hcl | 16 | suppressed |
| Azelastine Hcl | Azelastine Hcl | 15 | suppressed |
| Carbidopa-Levodopa | Carbidopa/Levodopa | 15 | suppressed |
| Ramipril | Ramipril | 15 | suppressed |
| Tizanidine Hcl | Tizanidine Hcl | 15 | suppressed |
| Celecoxib | Celecoxib | 14 | suppressed |
| Irbesartan | Irbesartan | 14 | suppressed |
| Januvia | Sitagliptin Phosphate | 14 | suppressed |
| Comfort Ez Pen Needle | Pen Needle, Diabetic | 13 | suppressed |
| Folic Acid | Folic Acid | 13 | suppressed |
| Azithromycin | Azithromycin | 12 | 11 |
| Chlorthalidone | Chlorthalidone | 12 | suppressed |
| Diclofenac Sodium | Diclofenac Sodium | 12 | suppressed |
| Doxycycline Hyclate | Doxycycline Hyclate | 12 | suppressed |
| Hydroxychloroquine Sulfate | Hydroxychloroquine Sulfate | 12 | suppressed |
| Insulin Lispro Kwikpen U-100 | Insulin Lispro | 12 | suppressed |
| Nitroglycerin | Nitroglycerin | 12 | suppressed |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 12 | suppressed |
| Diclofenac Potassium | Diclofenac Potassium | 11 | suppressed |
| Hydralazine Hcl | Hydralazine Hcl | 11 | suppressed |
| Ibandronate Sodium | Ibandronate Sodium | 11 | suppressed |
| Propranolol Hcl | Propranolol Hcl | 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 | $69.90 · 3 records | ABBVIE INC. | AREXVY, FREESTYLE LIBRE 3, QULIPTA, SHINGRIX, UBRELVY | 2 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Arexvy play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with ABBVIE 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