Payment overview · 2025
General Payments
$242.88
2 reported records · 2 companies
Healthcare provider profile · identity verified
Michael Anthony Nasiak, M.D.
Allopathic & Osteopathic Physicians|Internal Medicine · LAS VEGAS, NV · NPI 1821076449
Verified facts
What the public records show
CMS Open Payments records show Michael Anthony Nasiak, M.D. received $242.88 in general payments during 2025 across 2 reported records.
GENZYME CORPORATION accounted for 51.3% 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 |
|---|---|---|---|---|---|
| GENZYME CORPORATION | Unresolved — no canonical attribution shown | $124.67 | 51.3% | 1 | 2025 |
| BioMarin Pharmaceutical Inc. | Unresolved — no canonical attribution shown | $118.21 | 48.7% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $242.88 | 2 |
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 | 840 | 296 |
| Amlodipine Besylate | Amlodipine Besylate | 659 | 242 |
| Metformin Hcl | Metformin Hcl | 435 | 159 |
| Losartan Potassium | Losartan Potassium | 401 | 138 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 359 | 95 |
| Lisinopril | Lisinopril | 359 | 125 |
| Levothyroxine Sodium | Levothyroxine Sodium | 269 | 92 |
| Omeprazole | Omeprazole | 233 | 84 |
| Gabapentin | Gabapentin | 190 | 80 |
| Fluticasone Propionate | Fluticasone Propionate | 181 | 60 |
| Tamsulosin Hcl | Tamsulosin Hcl | 166 | 56 |
| Hydrochlorothiazide | Hydrochlorothiazide | 139 | 42 |
| Metoprolol Tartrate | Metoprolol Tartrate | 132 | 49 |
| Ibuprofen | Ibuprofen | 128 | 35 |
| Hydralazine Hcl | Hydralazine Hcl | 121 | 43 |
| Alendronate Sodium | Alendronate Sodium | 119 | 37 |
| Carvedilol | Carvedilol | 118 | 46 |
| Simvastatin | Simvastatin | 110 | 40 |
| Furosemide | Furosemide | 106 | 43 |
| Pantoprazole Sodium | Pantoprazole Sodium | 104 | 37 |
| Famotidine | Famotidine | 101 | 34 |
| Glipizide | Glipizide | 101 | 34 |
| Metoprolol Succinate | Metoprolol Succinate | 99 | 36 |
| Allopurinol | Allopurinol | 97 | 29 |
| Eliquis | Apixaban | 97 | 32 |
| Metformin Hcl Er | Metformin Hcl | 90 | 34 |
| Meloxicam | Meloxicam | 88 | 30 |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 79 | 25 |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 76 | 37 |
| Clopidogrel | Clopidogrel Bisulfate | 73 | 25 |
| Atenolol | Atenolol | 72 | 25 |
| Jardiance | Empagliflozin | 72 | 32 |
| Ozempic | Semaglutide | 71 | 20 |
| Montelukast Sodium | Montelukast Sodium | 70 | 28 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 61 | 23 |
| Trazodone Hcl | Trazodone Hcl | 60 | 21 |
| Oxybutynin Chloride | Oxybutynin Chloride | 57 | 18 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 52 | 25 |
| Meclizine Hcl | Meclizine Hcl | 51 | 13 |
| Pravastatin Sodium | Pravastatin Sodium | 51 | 18 |
| Finasteride | Finasteride | 50 | 17 |
| Tizanidine Hcl | Tizanidine Hcl | 50 | 19 |
| Spironolactone | Spironolactone | 47 | 20 |
| Ezetimibe | Ezetimibe | 44 | 15 |
| Latanoprost | Latanoprost | 44 | 12 |
| Naproxen | Naproxen | 42 | 15 |
| Januvia | Sitagliptin Phosphate | 41 | 11 |
| Nifedipine Er | Nifedipine | 41 | 13 |
| Diclofenac Sodium | Diclofenac Sodium | 39 | 11 |
| Ventolin Hfa | Albuterol Sulfate | 39 | 11 |
| Lovastatin | Lovastatin | 38 | 12 |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 34 | 13 |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 34 | 13 |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 34 | 14 |
| Duloxetine Hcl | Duloxetine Hcl | 33 | 11 |
| Zolpidem Tartrate | Zolpidem Tartrate | 32 | suppressed |
| Glipizide Er | Glipizide | 31 | suppressed |
| Potassium Chloride | Potassium Chloride | 31 | suppressed |
| Sertraline Hcl | Sertraline Hcl | 30 | 14 |
| Terazosin Hcl | Terazosin Hcl | 30 | suppressed |
| Entresto | Sacubitril/Valsartan | 28 | suppressed |
| Pioglitazone Hcl | Pioglitazone Hcl | 27 | suppressed |
| Quetiapine Fumarate | Quetiapine Fumarate | 27 | suppressed |
| Amitriptyline Hcl | Amitriptyline Hcl | 26 | suppressed |
| Baclofen | Baclofen | 26 | 11 |
| Tramadol Hcl | Tramadol Hcl | 26 | suppressed |
| Glimepiride | Glimepiride | 25 | suppressed |
| Symbicort | Budesonide/Formoterol Fumarate | 24 | suppressed |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 24 | suppressed |
| Wixela Inhub | Fluticasone Propion/Salmeterol | 24 | suppressed |
| Ramipril | Ramipril | 22 | suppressed |
| Valsartan | Valsartan | 22 | suppressed |
| Escitalopram Oxalate | Escitalopram Oxalate | 20 | suppressed |
| Fenofibrate | Fenofibrate | 20 | suppressed |
| Propranolol Hcl | Propranolol Hcl | 20 | suppressed |
| Fluoxetine Hcl | Fluoxetine Hcl | 19 | suppressed |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 19 | suppressed |
| Levetiracetam | Levetiracetam | 19 | suppressed |
| Celecoxib | Celecoxib | 18 | suppressed |
| Levemir Flexpen | Insulin Detemir | 17 | suppressed |
| Bisoprolol Fumarate | Bisoprolol Fumarate | 16 | suppressed |
| Clonazepam | Clonazepam | 16 | suppressed |
| Mupirocin | Mupirocin | 16 | suppressed |
| Sildenafil Citrate | Sildenafil Citrate | 16 | suppressed |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 15 | suppressed |
| Breo Ellipta | Fluticasone/Vilanterol | 15 | suppressed |
| Calcitriol | Calcitriol | 15 | suppressed |
| Droplet Pen Needle | Pen Needle, Diabetic | 15 | suppressed |
| Hydrocortisone | Hydrocortisone | 15 | suppressed |
| Indapamide | Indapamide | 15 | suppressed |
| Nano 2nd Gen Pen Needle | Pen Needle, Diabetic | 15 | suppressed |
| Triamterene-Hydrochlorothiazid | Triamterene/Hydrochlorothiazid | 15 | suppressed |
| Valsartan-Hydrochlorothiazide | Valsartan/Hydrochlorothiazide | 15 | suppressed |
| Bisoprolol-Hydrochlorothiazide | Bisoprolol/Hydrochlorothiazide | 14 | suppressed |
| Citalopram Hbr | Citalopram Hydrobromide | 14 | suppressed |
| Lactulose | Lactulose | 14 | suppressed |
| Benazepril Hcl | Benazepril Hcl | 13 | suppressed |
| Clotrimazole-Betamethasone | Clotrimazole/Betamethasone Dip | 13 | suppressed |
| Donepezil Hcl | Donepezil Hcl | 13 | suppressed |
| Dorzolamide-Timolol | Dorzolamide Hcl/Timolol Maleat | 13 | suppressed |
| Dropsafe Prep Pads | Alcohol Antiseptic Pads | 13 | suppressed |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 13 | suppressed |
| Janumet | Sitagliptin Phos/Metformin Hcl | 13 | suppressed |
| Methocarbamol | Methocarbamol | 13 | suppressed |
| Ondansetron Hcl | Ondansetron Hcl | 13 | suppressed |
| Otezla | Apremilast | 13 | suppressed |
| Pregabalin | Pregabalin | 13 | suppressed |
| Ultra-Fine Mini Pen Needle | Pen Needle, Diabetic | 13 | suppressed |
| Chlorthalidone | Chlorthalidone | 12 | suppressed |
| Divalproex Sodium | Divalproex Sodium | 12 | suppressed |
| Levocetirizine Dihydrochloride | Levocetirizine Dihydrochloride | 12 | suppressed |
| Temazepam | Temazepam | 12 | suppressed |
| Warfarin Sodium | Warfarin Sodium | 12 | suppressed |
| Alcohol Prep Pads | Alcohol Antiseptic Pads | 11 | suppressed |
| Azelastine Hcl | Azelastine Hcl | 11 | suppressed |
| Bupropion Xl | Bupropion Hcl | 11 | suppressed |
| Doxazosin Mesylate | Doxazosin Mesylate | 11 | suppressed |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 11 | suppressed |
| Insulin Lispro Kwikpen U-100 | Insulin Lispro | 11 | suppressed |
| Labetalol Hcl | Labetalol Hcl | 11 | suppressed |
| Lumigan | Bimatoprost | 11 | suppressed |
| Paroxetine Hcl | Paroxetine Hcl | 11 | suppressed |
| Solifenacin Succinate | Solifenacin Succinate | 11 | suppressed |
| Synthroid | Levothyroxine Sodium | 11 | suppressed |
| Trulicity | Dulaglutide | 11 | suppressed |
| Valacyclovir | Valacyclovir Hcl | 11 | suppressed |
| Xarelto | Rivaroxaban | 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 | $242.88 · 2 records | GENZYME CORPORATION | — | — | — |
| 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