Payment overview · 2025
General Payments
$286.59
12 reported records · 5 companies
Healthcare provider profile · identity verified
Michael Gerald Knapp, DO
Allopathic & Osteopathic Physicians|Family Medicine · JOPLIN, MO · NPI 1689776148
Verified facts
What the public records show
CMS Open Payments records show Michael Gerald Knapp, DO received $286.59 in general payments during 2025 across 12 reported records.
AstraZeneca Pharmaceuticals LP accounted for 68.0% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 7 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Farxiga, Gemtesa.
AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 36 claims for Farxiga by this doctor in 2024.
Sumitomo Pharma America, 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 GEMTESA as an associated drug or biological on 61692 records involving 22152 distinct recipient NPIs. Public Medicare Part D data also shows 23 claims for Gemtesa 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 | $194.90 | 68.0% | 8 | 2025 |
| Seqirus USA Inc | Unresolved — no canonical attribution shown | $26.47 | 9.2% | 1 | 2025 |
| Sumitomo Pharma America, Inc. | Unresolved — no canonical attribution shown | $23.81 | 8.3% | 1 | 2025 |
| Dexcom, Inc. | Unresolved — no canonical attribution shown | $22.29 | 7.8% | 1 | 2025 |
| Verona Pharma, Inc. | Unresolved — no canonical attribution shown | $19.12 | 6.7% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $286.59 | 12 |
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 |
|---|---|---|---|---|---|
| BREZTRI Normalized: breztri |
Drug | AstraZeneca Pharmaceuticals LP | $125.78 | 5 | 2025 |
Source payment records
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| FARXIGA Normalized: farxiga |
Drug | AstraZeneca Pharmaceuticals LP | $69.12 | 3 | 2025 |
Source payment records
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| Fluad Normalized: fluad |
Biological | Seqirus USA Inc | $26.47 | 1 | 2025 |
Source payment records
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| Flucelvax Normalized: flucelvax |
Biological | Seqirus USA Inc | $26.47 | 1 | 2025 |
Source payment records
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| GEMTESA Normalized: gemtesa |
Drug | Sumitomo Pharma America, Inc. | $23.81 | 1 | 2025 |
Source payment records
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| Dexcom G6 Transmitter Normalized: dexcom g6 transmitter |
Medical Supply | Dexcom, Inc. | $22.29 | 1 | 2025 |
Source payment records
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| Ohtuvayre Normalized: ohtuvayre |
Drug | Verona Pharma, Inc. | $19.12 | 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 |
|---|---|---|---|---|---|---|
| FARXIGA farxiga |
2025 | Farxiga | 2024 | 36 Beneficiary count suppressed |
exact normalized | Medicare Part D |
| GEMTESA gemtesa |
2025 | Gemtesa | 2024 | 23 Beneficiary count suppressed |
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 |
|---|---|---|---|---|---|---|
| AstraZeneca Pharmaceuticals LP Exact reporting entity; no affiliate inference |
2025 | FARXIGA open payments reported associated product |
CMS Open Payments — General Payments 106133 supporting records · 42906 recipient NPIs · example record 1206131362 |
Farxiga · 2024 Exact normalized brand match · 1 Part D row |
36 | suppressed by CMS |
| Sumitomo Pharma America, Inc. Exact reporting entity; no affiliate inference |
2025 | GEMTESA open payments reported associated product |
CMS Open Payments — General Payments 61692 supporting records · 22152 recipient NPIs · example record 1176593503 |
Gemtesa · 2024 Exact normalized brand match · 1 Part D row |
23 | 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 |
|---|---|---|---|
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 311 | 55 |
| Levothyroxine Sodium | Levothyroxine Sodium | 302 | 71 |
| Atorvastatin Calcium | Atorvastatin Calcium | 288 | 67 |
| Amlodipine Besylate | Amlodipine Besylate | 194 | 48 |
| Omeprazole | Omeprazole | 170 | 28 |
| Alprazolam | Alprazolam | 166 | 36 |
| Losartan Potassium | Losartan Potassium | 122 | 25 |
| Metformin Hcl | Metformin Hcl | 122 | 34 |
| Simvastatin | Simvastatin | 114 | 31 |
| Gabapentin | Gabapentin | 111 | 23 |
| Potassium Chloride | Potassium Chloride | 90 | 21 |
| Tramadol Hcl | Tramadol Hcl | 89 | 12 |
| Tamsulosin Hcl | Tamsulosin Hcl | 88 | 23 |
| Allopurinol | Allopurinol | 86 | 20 |
| Hydrochlorothiazide | Hydrochlorothiazide | 86 | 22 |
| Carvedilol | Carvedilol | 83 | 25 |
| Meloxicam | Meloxicam | 80 | 15 |
| Furosemide | Furosemide | 73 | 15 |
| Duloxetine Hcl | Duloxetine Hcl | 68 | 16 |
| Montelukast Sodium | Montelukast Sodium | 64 | 14 |
| Pantoprazole Sodium | Pantoprazole Sodium | 64 | 18 |
| Metoprolol Tartrate | Metoprolol Tartrate | 62 | 16 |
| Lorazepam | Lorazepam | 61 | suppressed |
| Zolpidem Tartrate | Zolpidem Tartrate | 61 | 12 |
| Eliquis | Apixaban | 60 | 13 |
| Pravastatin Sodium | Pravastatin Sodium | 58 | 12 |
| Memantine Hcl | Memantine Hcl | 56 | suppressed |
| Ozempic | Semaglutide | 56 | suppressed |
| Clopidogrel | Clopidogrel Bisulfate | 55 | 14 |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 55 | 14 |
| Olmesartan-Hydrochlorothiazide | Olmesartan/Hydrochlorothiazide | 53 | 12 |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 51 | 13 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 49 | 36 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 48 | 14 |
| Clonidine Hcl | Clonidine Hcl | 46 | 12 |
| Clorazepate Dipotassium | Clorazepate Dipotassium | 46 | suppressed |
| Lisinopril | Lisinopril | 45 | 15 |
| Citalopram Hbr | Citalopram Hydrobromide | 44 | 11 |
| Quetiapine Fumarate | Quetiapine Fumarate | 44 | suppressed |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 44 | 12 |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 43 | suppressed |
| Hydralazine Hcl | Hydralazine Hcl | 42 | 12 |
| Sertraline Hcl | Sertraline Hcl | 42 | 11 |
| Tresiba Flextouch U-100 | Insulin Degludec | 42 | suppressed |
| Carisoprodol | Carisoprodol | 41 | suppressed |
| Trazodone Hcl | Trazodone Hcl | 39 | suppressed |
| Clonazepam | Clonazepam | 38 | suppressed |
| Celecoxib | Celecoxib | 37 | 15 |
| Pregabalin | Pregabalin | 37 | suppressed |
| Colchicine | Colchicine | 36 | suppressed |
| Farxiga | Dapagliflozin Propanediol | 36 | suppressed |
| Metformin Hcl Er | Metformin Hcl | 36 | suppressed |
| Diazepam | Diazepam | 35 | suppressed |
| Metoprolol Succinate | Metoprolol Succinate | 35 | suppressed |
| Methotrexate | Methotrexate Sodium | 34 | suppressed |
| Doxepin Hcl | Doxepin Hcl | 32 | suppressed |
| Finasteride | Finasteride | 30 | suppressed |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 29 | suppressed |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 29 | suppressed |
| Xarelto | Rivaroxaban | 29 | suppressed |
| Alendronate Sodium | Alendronate Sodium | 28 | suppressed |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 28 | suppressed |
| Paroxetine Hcl | Paroxetine Hcl | 27 | suppressed |
| Spironolactone | Spironolactone | 27 | suppressed |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 27 | 19 |
| Bupropion Hcl Sr | Bupropion Hcl | 26 | suppressed |
| Oxycodone Hcl | Oxycodone Hcl | 26 | suppressed |
| Escitalopram Oxalate | Escitalopram Oxalate | 25 | suppressed |
| Estradiol | Estradiol | 25 | suppressed |
| Morphine Sulfate Er | Morphine Sulfate | 25 | suppressed |
| Naproxen | Naproxen | 25 | suppressed |
| Prednisone | Prednisone | 25 | 16 |
| Synthroid | Levothyroxine Sodium | 25 | suppressed |
| Dicyclomine Hcl | Dicyclomine Hcl | 24 | suppressed |
| Januvia | Sitagliptin Phosphate | 24 | suppressed |
| Doxazosin Mesylate | Doxazosin Mesylate | 23 | suppressed |
| Gemtesa | Vibegron | 23 | suppressed |
| Warfarin Sodium | Warfarin Sodium | 23 | suppressed |
| Aripiprazole | Aripiprazole | 22 | suppressed |
| Fluconazole | Fluconazole | 22 | suppressed |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 22 | suppressed |
| Mupirocin | Mupirocin | 22 | 15 |
| Triamterene-Hydrochlorothiazid | Triamterene/Hydrochlorothiazid | 22 | suppressed |
| Atenolol | Atenolol | 21 | suppressed |
| Diclofenac Sodium | Diclofenac Sodium | 21 | suppressed |
| Irbesartan-Hydrochlorothiazide | Irbesartan/Hydrochlorothiazide | 21 | suppressed |
| Mounjaro | Tirzepatide | 21 | suppressed |
| Pioglitazone Hcl | Pioglitazone Hcl | 21 | suppressed |
| Trintellix | Vortioxetine Hydrobromide | 21 | suppressed |
| Fluoxetine Hcl | Fluoxetine Hcl | 20 | suppressed |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 20 | suppressed |
| Pramipexole Dihydrochloride | Pramipexole Di-Hcl | 20 | suppressed |
| Sucralfate | Sucralfate | 20 | suppressed |
| Bydureon Bcise | Exenatide Microspheres | 19 | suppressed |
| Jardiance | Empagliflozin | 19 | suppressed |
| Levetiracetam | Levetiracetam | 19 | suppressed |
| Acyclovir | Acyclovir | 18 | suppressed |
| Hydromorphone Hcl | Hydromorphone Hcl | 18 | suppressed |
| Oxybutynin Chloride | Oxybutynin Chloride | 18 | suppressed |
| Tizanidine Hcl | Tizanidine Hcl | 18 | suppressed |
| Ondansetron Odt | Ondansetron | 17 | 11 |
| Trelegy Ellipta | Fluticasone/Umeclidin/Vilanter | 17 | suppressed |
| Arexvy | Rsvpref3 Antigen/As01e/Pf | 16 | 16 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 16 | suppressed |
| Bumetanide | Bumetanide | 15 | suppressed |
| Carbidopa-Levodopa | Carbidopa/Levodopa | 15 | suppressed |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 15 | suppressed |
| Glipizide Er | Glipizide | 15 | suppressed |
| Hydroxyzine Pamoate | Hydroxyzine Pamoate | 15 | suppressed |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 15 | suppressed |
| Azelastine Hcl | Azelastine Hcl | 14 | 11 |
| Diltiazem 24hr Er | Diltiazem Hcl | 14 | suppressed |
| Fenofibrate | Fenofibrate Nanocrystallized | 14 | suppressed |
| Phenytoin Sodium Extended | Phenytoin Sodium Extended | 14 | suppressed |
| Promethazine Hcl | Promethazine Hcl | 14 | suppressed |
| Ropinirole Hcl | Ropinirole Hcl | 14 | suppressed |
| Temazepam | Temazepam | 14 | suppressed |
| Amitriptyline Hcl | Amitriptyline Hcl | 13 | suppressed |
| Brimonidine Tartrate | Brimonidine Tartrate | 13 | suppressed |
| Desvenlafaxine Succinate Er | Desvenlafaxine Succinate | 13 | suppressed |
| Diphenoxylate-Atropine | Diphenoxylate Hcl/Atropine | 13 | suppressed |
| Gemfibrozil | Gemfibrozil | 13 | suppressed |
| Spiriva Handihaler | Tiotropium Bromide | 13 | suppressed |
| Benazepril Hcl | Benazepril Hcl | 12 | suppressed |
| Valsartan | Valsartan | 12 | suppressed |
| Ventolin Hfa | Albuterol Sulfate | 12 | suppressed |
| Dofetilide | Dofetilide | 11 | suppressed |
| Donepezil Hcl | Donepezil Hcl | 11 | suppressed |
| Glimepiride | Glimepiride | 11 | suppressed |
| Insulin Degludec Pen (U-200) | Insulin Degludec | 11 | suppressed |
| Methimazole | Methimazole | 11 | suppressed |
| Ramipril | Ramipril | 11 | suppressed |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 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 | $286.59 · 12 records | AstraZeneca Pharmaceuticals LP | BREZTRI, Dexcom G6 Transmitter, FARXIGA, Fluad, Flucelvax, GEMTESA, Ohtuvayre | 2 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Farxiga play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with AstraZeneca Pharmaceuticals LP?
- 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