Payment overview · 2025
General Payments
We did not find matching Open Payments records for this doctor in the selected program year.
Healthcare provider profile · identity verified
David A. Knorek, M.D.
Internal Medicine · HARRISBURG, PA · NPI 1760745376
Verified facts
What the public records show
We did not find matching Open Payments records for this doctor in 2025.
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.
Analysis 1 · Payment-linked products
Products named in Open Payments records
No payment-linked product analysis is available because no matching General Payment records were found for the selected year.
Public prescribing for products named in payments
There is no explicit payment-product set available for a Part D comparison.
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.
There is no payer-company set available for this comparison.
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 | 454 | 126 |
| Amlodipine Besylate | Amlodipine Besylate | 404 | 106 |
| Losartan Potassium | Losartan Potassium | 267 | 74 |
| Pantoprazole Sodium | Pantoprazole Sodium | 252 | 78 |
| Levothyroxine Sodium | Levothyroxine Sodium | 250 | 69 |
| Omeprazole | Omeprazole | 250 | 71 |
| Lisinopril | Lisinopril | 240 | 65 |
| Metformin Hcl | Metformin Hcl | 212 | 55 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 212 | 66 |
| Gabapentin | Gabapentin | 204 | 61 |
| Meloxicam | Meloxicam | 167 | 54 |
| Pravastatin Sodium | Pravastatin Sodium | 152 | 47 |
| Metoprolol Succinate | Metoprolol Succinate | 150 | 43 |
| Montelukast Sodium | Montelukast Sodium | 133 | 37 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 131 | 40 |
| Simvastatin | Simvastatin | 130 | 35 |
| Sertraline Hcl | Sertraline Hcl | 122 | 34 |
| Eliquis | Apixaban | 119 | 29 |
| Ezetimibe | Ezetimibe | 115 | 37 |
| Trazodone Hcl | Trazodone Hcl | 109 | 27 |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 99 | 43 |
| Buspirone Hcl | Buspirone Hcl | 98 | 31 |
| Alendronate Sodium | Alendronate Sodium | 95 | 25 |
| Furosemide | Furosemide | 93 | 40 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 90 | 41 |
| Carvedilol | Carvedilol | 88 | 26 |
| Duloxetine Hcl | Duloxetine Hcl | 85 | 24 |
| Allopurinol | Allopurinol | 84 | 22 |
| Tamsulosin Hcl | Tamsulosin Hcl | 83 | 30 |
| Escitalopram Oxalate | Escitalopram Oxalate | 82 | 23 |
| Glipizide Er | Glipizide | 82 | 27 |
| Fluticasone Propionate | Fluticasone Propionate | 78 | 25 |
| Hydrochlorothiazide | Hydrochlorothiazide | 77 | 21 |
| Januvia | Sitagliptin Phosphate | 74 | 20 |
| Prednisone | Prednisone | 72 | 46 |
| Pregabalin | Pregabalin | 71 | suppressed |
| Diclofenac Sodium | Diclofenac Sodium | 68 | 22 |
| Tizanidine Hcl | Tizanidine Hcl | 64 | 18 |
| Mirtazapine | Mirtazapine | 63 | 17 |
| Spironolactone | Spironolactone | 63 | 14 |
| Lorazepam | Lorazepam | 62 | 17 |
| Farxiga | Dapagliflozin Propanediol | 61 | 13 |
| Bupropion Xl | Bupropion Hcl | 60 | 20 |
| Ozempic | Semaglutide | 59 | 11 |
| Donepezil Hcl | Donepezil Hcl | 57 | 15 |
| Fluoxetine Hcl | Fluoxetine Hcl | 57 | 13 |
| Mounjaro | Tirzepatide | 57 | suppressed |
| Baclofen | Baclofen | 51 | 12 |
| Azelastine Hcl | Azelastine Hcl | 50 | 17 |
| Fenofibrate | Fenofibrate Nanocrystallized | 50 | 18 |
| Hydroxyzine Pamoate | Hydroxyzine Pamoate | 49 | 17 |
| Clopidogrel | Clopidogrel Bisulfate | 48 | 19 |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 48 | 13 |
| Jardiance | Empagliflozin | 47 | 19 |
| Potassium Chloride | Potassium Chloride | 47 | 16 |
| Propranolol Hcl | Propranolol Hcl | 47 | 16 |
| Synthroid | Levothyroxine Sodium | 46 | 15 |
| Amitriptyline Hcl | Amitriptyline Hcl | 45 | 12 |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 44 | suppressed |
| Bumetanide | Bumetanide | 42 | 16 |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 42 | 16 |
| Ketoconazole | Ketoconazole | 41 | 11 |
| Glimepiride | Glimepiride | 39 | suppressed |
| Dicyclomine Hcl | Dicyclomine Hcl | 38 | 12 |
| Famotidine | Famotidine | 38 | 14 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 36 | 24 |
| Valsartan | Valsartan | 35 | suppressed |
| Clobetasol Propionate | Clobetasol Propionate | 34 | 16 |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 34 | 12 |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 34 | suppressed |
| Finasteride | Finasteride | 33 | 11 |
| Quetiapine Fumarate | Quetiapine Fumarate | 33 | suppressed |
| Citalopram Hbr | Citalopram Hydrobromide | 32 | suppressed |
| Chlorthalidone | Chlorthalidone | 31 | suppressed |
| Ciclopirox | Ciclopirox Olamine | 30 | 15 |
| Enalapril Maleate | Enalapril Maleate | 30 | suppressed |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 30 | suppressed |
| Benazepril Hcl | Benazepril Hcl | 29 | suppressed |
| Sucralfate | Sucralfate | 28 | suppressed |
| Atenolol | Atenolol | 27 | suppressed |
| Etodolac Er | Etodolac | 27 | suppressed |
| Meclizine Hcl | Meclizine Hcl | 27 | suppressed |
| Alprazolam | Alprazolam | 26 | suppressed |
| Telmisartan | Telmisartan | 26 | suppressed |
| Azithromycin | Azithromycin | 25 | 21 |
| Doxycycline Hyclate | Doxycycline Hyclate | 25 | 15 |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 25 | suppressed |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 25 | suppressed |
| Nifedipine Er | Nifedipine | 25 | suppressed |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 24 | suppressed |
| Fenofibrate | Fenofibrate | 24 | suppressed |
| Hydrocortisone | Hydrocortisone | 24 | suppressed |
| Tramadol Hcl | Tramadol Hcl | 24 | suppressed |
| Doxepin Hcl | Doxepin Hcl | 23 | suppressed |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 22 | suppressed |
| Klor-Con M20 | Potassium Chloride | 22 | suppressed |
| Ropinirole Hcl | Ropinirole Hcl | 22 | suppressed |
| Acetaminophen-Codeine | Acetaminophen With Codeine | 21 | suppressed |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 21 | 18 |
| Clonazepam | Clonazepam | 21 | suppressed |
| Methylprednisolone | Methylprednisolone | 21 | 17 |
| Metoprolol Tartrate | Metoprolol Tartrate | 21 | suppressed |
| Mupirocin | Mupirocin | 21 | suppressed |
| Paroxetine Hcl | Paroxetine Hcl | 21 | suppressed |
| Valacyclovir | Valacyclovir Hcl | 21 | 14 |
| Amiodarone Hcl | Amiodarone Hcl | 20 | suppressed |
| Celecoxib | Celecoxib | 20 | 12 |
| Irbesartan | Irbesartan | 20 | suppressed |
| Levetiracetam | Levetiracetam | 20 | suppressed |
| Metronidazole | Metronidazole | 20 | suppressed |
| Tradjenta | Linagliptin | 20 | suppressed |
| Fenofibrate | Fenofibrate,micronized | 19 | suppressed |
| Valsartan-Hydrochlorothiazide | Valsartan/Hydrochlorothiazide | 19 | suppressed |
| Memantine Hcl | Memantine Hcl | 18 | suppressed |
| Topiramate | Topiramate | 18 | suppressed |
| Eszopiclone | Eszopiclone | 17 | suppressed |
| Metformin Hcl Er | Metformin Hcl | 17 | suppressed |
| Ondansetron Hcl | Ondansetron Hcl | 17 | suppressed |
| Estradiol | Estradiol | 16 | suppressed |
| Fluconazole | Fluconazole | 16 | suppressed |
| Glipizide | Glipizide | 16 | suppressed |
| Myrbetriq | Mirabegron | 16 | suppressed |
| Ofloxacin | Ofloxacin | 16 | 11 |
| Propranolol Hcl Er | Propranolol Hcl | 16 | suppressed |
| Risperidone | Risperidone | 16 | suppressed |
| Warfarin Sodium | Warfarin Sodium | 16 | suppressed |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 15 | 12 |
| Nystatin | Nystatin | 15 | 12 |
| Repaglinide | Repaglinide | 15 | suppressed |
| Trulicity | Dulaglutide | 15 | suppressed |
| Breztri Aerosphere | Budesonide/Glycopyr/Formoterol | 14 | suppressed |
| Bupropion Hcl Sr | Bupropion Hcl | 14 | suppressed |
| Metoclopramide Hcl | Metoclopramide Hcl | 14 | suppressed |
| Nano 2nd Gen Pen Needle | Pen Needle, Diabetic | 14 | suppressed |
| Pioglitazone Hcl | Pioglitazone Hcl | 14 | suppressed |
| Torsemide | Torsemide | 14 | suppressed |
| Colchicine | Colchicine | 13 | suppressed |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 13 | suppressed |
| Sulindac | Sulindac | 13 | suppressed |
| Atomoxetine Hcl | Atomoxetine Hcl | 12 | suppressed |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 12 | suppressed |
| Fluocinonide | Fluocinonide | 12 | suppressed |
| Incruse Ellipta | Umeclidinium Bromide | 12 | suppressed |
| Nortriptyline Hcl | Nortriptyline Hcl | 12 | suppressed |
| Xarelto | Rivaroxaban | 12 | suppressed |
| Aripiprazole | Aripiprazole | 11 | suppressed |
| Bupropion Hcl | Bupropion Hcl | 11 | suppressed |
| Calcitriol | Calcitriol | 11 | suppressed |
| Clotrimazole-Betamethasone | Clotrimazole/Betamethasone Dip | 11 | suppressed |
| Imiquimod | Imiquimod | 11 | suppressed |
| Linzess | Linaclotide | 11 | suppressed |
| Lubiprostone | Lubiprostone | 11 | suppressed |
| Mometasone Furoate | Mometasone Furoate | 11 | suppressed |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 11 | suppressed |
| Piroxicam | Piroxicam | 11 | suppressed |
| Rybelsus | Semaglutide | 11 | suppressed |
| Sumatriptan Succinate | Sumatriptan Succinate | 11 | suppressed |
| Varenicline Tartrate | Varenicline Tartrate | 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 | — | — | — | — | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- 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