Payment overview · 2025
General Payments
$3,122.85
18 reported records · 1 companies
Healthcare provider profile · identity verified
Michael R Cox, MD
Allopathic & Osteopathic Physicians|Internal Medicine · TOPEKA, KS · NPI 1275593451
Verified facts
What the public records show
CMS Open Payments records show Michael R Cox, MD received $3,122.85 in general payments during 2025 across 18 reported records.
Merck Sharp & Dohme LLC accounted for 100.0% of that reported general-payment amount.
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 |
|---|---|---|---|---|---|
| Merck Sharp & Dohme LLC | Unresolved — no canonical attribution shown | $3,122.85 | 100.0% | 18 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Travel and Lodging | $2,653.24 | 11 |
| Food and Beverage | $469.61 | 7 |
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
Payment records were found, but the reported records did not identify a specific associated product for this analysis.
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.
No publishable same-company prescribing overlap was found in the loaded Part D year. This does not mean the doctor never prescribed a drug reported elsewhere by a paying company.
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 | 813 | 218 |
| Levothyroxine Sodium | Levothyroxine Sodium | 566 | 142 |
| Lisinopril | Lisinopril | 520 | 147 |
| Amlodipine Besylate | Amlodipine Besylate | 427 | 118 |
| Hydrochlorothiazide | Hydrochlorothiazide | 312 | 88 |
| Omeprazole | Omeprazole | 307 | 87 |
| Tramadol Hcl | Tramadol Hcl | 278 | 50 |
| Simvastatin | Simvastatin | 270 | 78 |
| Pantoprazole Sodium | Pantoprazole Sodium | 258 | 69 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 255 | 66 |
| Tamsulosin Hcl | Tamsulosin Hcl | 195 | 50 |
| Oxycodone Hcl | Oxycodone Hcl | 184 | 27 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 183 | 26 |
| Gabapentin | Gabapentin | 177 | 59 |
| Zolpidem Tartrate | Zolpidem Tartrate | 160 | 27 |
| Losartan Potassium | Losartan Potassium | 150 | 45 |
| Carvedilol | Carvedilol | 146 | 42 |
| Sertraline Hcl | Sertraline Hcl | 124 | 33 |
| Allopurinol | Allopurinol | 115 | 33 |
| Furosemide | Furosemide | 114 | 33 |
| Potassium Chloride | Potassium Chloride | 112 | 31 |
| Duloxetine Hcl | Duloxetine Hcl | 108 | 19 |
| Metoprolol Succinate | Metoprolol Succinate | 108 | 32 |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 107 | 37 |
| Alprazolam | Alprazolam | 101 | 17 |
| Metformin Hcl Er | Metformin Hcl | 93 | 30 |
| Escitalopram Oxalate | Escitalopram Oxalate | 88 | 25 |
| Alendronate Sodium | Alendronate Sodium | 87 | 27 |
| Finasteride | Finasteride | 86 | 23 |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 77 | 22 |
| Metformin Hcl | Metformin Hcl | 75 | 22 |
| Pravastatin Sodium | Pravastatin Sodium | 73 | 22 |
| Citalopram Hbr | Citalopram Hydrobromide | 72 | 17 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 69 | 25 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 68 | 24 |
| Celecoxib | Celecoxib | 66 | 19 |
| Doxazosin Mesylate | Doxazosin Mesylate | 65 | 18 |
| Prednisone | Prednisone | 64 | 29 |
| Irbesartan | Irbesartan | 62 | 16 |
| Trazodone Hcl | Trazodone Hcl | 56 | 16 |
| Clopidogrel | Clopidogrel Bisulfate | 55 | 18 |
| Fluticasone Propionate | Fluticasone Propionate | 53 | 16 |
| Metoprolol Tartrate | Metoprolol Tartrate | 52 | 14 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 51 | 44 |
| Eliquis | Apixaban | 51 | 14 |
| Lorazepam | Lorazepam | 48 | 13 |
| Montelukast Sodium | Montelukast Sodium | 48 | 15 |
| Tizanidine Hcl | Tizanidine Hcl | 48 | 11 |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 48 | 12 |
| Fenofibrate | Fenofibrate Nanocrystallized | 44 | 12 |
| Pregabalin | Pregabalin | 44 | suppressed |
| Synthroid | Levothyroxine Sodium | 43 | 11 |
| Azithromycin | Azithromycin | 41 | 33 |
| Atenolol | Atenolol | 39 | 11 |
| Meloxicam | Meloxicam | 39 | 11 |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 36 | suppressed |
| Estradiol | Estradiol | 35 | suppressed |
| Morphine Sulfate Er | Morphine Sulfate | 35 | suppressed |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 34 | suppressed |
| Fenofibrate | Fenofibrate | 33 | suppressed |
| Fluoxetine Hcl | Fluoxetine Hcl | 33 | suppressed |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 31 | suppressed |
| Buspirone Hcl | Buspirone Hcl | 30 | suppressed |
| Donepezil Hcl | Donepezil Hcl | 30 | suppressed |
| Gemfibrozil | Gemfibrozil | 30 | suppressed |
| Glimepiride | Glimepiride | 30 | suppressed |
| Bupropion Xl | Bupropion Hcl | 29 | suppressed |
| Fentanyl | Fentanyl | 29 | suppressed |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 29 | suppressed |
| Acetaminophen-Codeine | Acetaminophen With Codeine | 28 | suppressed |
| Cephalexin | Cephalexin | 26 | 12 |
| Diclofenac Sodium | Diclofenac Sodium | 26 | suppressed |
| Xarelto | Rivaroxaban | 26 | suppressed |
| Amlodipine Besylate-Benazepril | Amlodipine Besylate/Benazepril | 25 | suppressed |
| Januvia | Sitagliptin Phosphate | 25 | suppressed |
| Ezetimibe | Ezetimibe | 23 | suppressed |
| Lovastatin | Lovastatin | 23 | suppressed |
| Raloxifene Hcl | Raloxifene Hcl | 22 | suppressed |
| Diltiazem 24hr Er | Diltiazem Hcl | 21 | suppressed |
| Pioglitazone Hcl | Pioglitazone Hcl | 21 | suppressed |
| Valacyclovir | Valacyclovir Hcl | 21 | suppressed |
| Primidone | Primidone | 20 | suppressed |
| Metoclopramide Hcl | Metoclopramide Hcl | 18 | suppressed |
| Valsartan-Hydrochlorothiazide | Valsartan/Hydrochlorothiazide | 18 | suppressed |
| Amitriptyline Hcl | Amitriptyline Hcl | 17 | suppressed |
| Oxycontin | Oxycodone Hcl | 17 | suppressed |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 17 | 15 |
| Topiramate | Topiramate | 17 | suppressed |
| Torsemide | Torsemide | 17 | suppressed |
| Valsartan | Valsartan | 17 | suppressed |
| Famotidine | Famotidine | 16 | suppressed |
| Pramipexole Dihydrochloride | Pramipexole Di-Hcl | 16 | suppressed |
| Enalapril Maleate | Enalapril Maleate | 15 | suppressed |
| Lansoprazole | Lansoprazole | 15 | suppressed |
| Ozempic | Semaglutide | 15 | suppressed |
| Paxlovid | Nirmatrelvir/Ritonavir | 15 | 15 |
| Xtampza Er | Oxycodone Myristate | 15 | suppressed |
| Mirtazapine | Mirtazapine | 14 | suppressed |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 14 | suppressed |
| Verapamil Er | Verapamil Hcl | 14 | suppressed |
| Clonazepam | Clonazepam | 13 | suppressed |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 13 | suppressed |
| Klor-Con M20 | Potassium Chloride | 13 | suppressed |
| Morphine Sulfate | Morphine Sulfate | 13 | suppressed |
| Risperidone | Risperidone | 13 | suppressed |
| Terazosin Hcl | Terazosin Hcl | 13 | suppressed |
| Amiloride Hcl | Amiloride Hcl | 12 | suppressed |
| Benazepril Hcl | Benazepril Hcl | 12 | suppressed |
| Bupropion Hcl Sr | Bupropion Hcl | 12 | suppressed |
| Hydromorphone Hcl | Hydromorphone Hcl | 12 | suppressed |
| Methadone Hcl | Methadone Hcl | 12 | suppressed |
| Prenatal Vitamin Plus Low Iron | Pnv,calcium 72/Iron/Folic Acid | 12 | suppressed |
| Propranolol Hcl Er | Propranolol Hcl | 12 | suppressed |
| Quetiapine Fumarate | Quetiapine Fumarate | 12 | suppressed |
| Diphenoxylate-Atropine | Diphenoxylate Hcl/Atropine | 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 | $3,122.85 · 18 records | Merck Sharp & Dohme LLC | — | — | — |
| 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