Payment overview · 2025
General Payments
$121.80
1 reported records · 1 companies
Healthcare provider profile · identity verified
Son L Chau, M.D.
Allopathic & Osteopathic Physicians|General Practice · ORLANDO, FL · NPI 1023006111
Verified facts
What the public records show
CMS Open Payments records show Son L Chau, M.D. received $121.80 in general payments during 2025 across 1 reported records.
Gilead Sciences, Inc. accounted for 100.0% of that reported general-payment amount.
Gilead Sciences, 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 Vemlidy as an associated drug or biological on 782 records involving 554 distinct recipient NPIs. Public Medicare Part D data also shows 24 claims for Vemlidy 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 |
|---|---|---|---|---|---|
| Gilead Sciences, Inc. | Unresolved — no canonical attribution shown | $121.80 | 100.0% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $121.80 | 1 |
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.
| Paying company | Payment year | Drug reported by same entity | Open Payments evidence | Part D | Claims | Beneficiaries |
|---|---|---|---|---|---|---|
| Gilead Sciences, Inc. Exact reporting entity; no affiliate inference |
2025 | Vemlidy open payments reported associated product |
CMS Open Payments — General Payments 782 supporting records · 554 recipient NPIs · example record 1234350906 |
Vemlidy · 2024 Exact normalized brand match · 1 Part D row |
24 | 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 |
|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 1356 | 431 |
| Losartan Potassium | Losartan Potassium | 1052 | 323 |
| Metformin Hcl | Metformin Hcl | 925 | 293 |
| Methylprednisolone | Methylprednisolone | 871 | 480 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 831 | 259 |
| Gabapentin | Gabapentin | 793 | 244 |
| Amlodipine Besylate | Amlodipine Besylate | 750 | 256 |
| Levothyroxine Sodium | Levothyroxine Sodium | 725 | 196 |
| Pantoprazole Sodium | Pantoprazole Sodium | 634 | 209 |
| Omeprazole | Omeprazole | 519 | 150 |
| Diclofenac Sodium | Diclofenac Sodium | 505 | 227 |
| Tramadol Hcl | Tramadol Hcl | 494 | 208 |
| Metoprolol Tartrate | Metoprolol Tartrate | 491 | 144 |
| Azithromycin | Azithromycin | 458 | 297 |
| Glimepiride | Glimepiride | 415 | 126 |
| Alprazolam | Alprazolam | 394 | 86 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 376 | 126 |
| Alendronate Sodium | Alendronate Sodium | 371 | 128 |
| Tamsulosin Hcl | Tamsulosin Hcl | 367 | 114 |
| Lisinopril | Lisinopril | 362 | 113 |
| Jardiance | Empagliflozin | 360 | 66 |
| Fluticasone Propionate | Fluticasone Propionate | 338 | 146 |
| Mirtazapine | Mirtazapine | 328 | 107 |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 327 | 147 |
| Vitamin D2 | Ergocalciferol (Vitamin D2) | 297 | 126 |
| Clonidine Hcl | Clonidine Hcl | 295 | 106 |
| Meloxicam | Meloxicam | 288 | 100 |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 282 | 52 |
| Trazodone Hcl | Trazodone Hcl | 274 | 86 |
| Simvastatin | Simvastatin | 253 | 78 |
| Fenofibrate | Fenofibrate | 246 | 70 |
| Zolpidem Tartrate | Zolpidem Tartrate | 240 | 52 |
| Clopidogrel | Clopidogrel Bisulfate | 211 | 66 |
| Furosemide | Furosemide | 198 | 77 |
| Trelegy Ellipta | Fluticasone/Umeclidin/Vilanter | 197 | 59 |
| Carvedilol | Carvedilol | 183 | 57 |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 183 | 64 |
| Butalbital-Acetaminophen-Caffe | Butalb/Acetaminophen/Caffeine | 180 | 68 |
| Memantine Hcl | Memantine Hcl | 178 | 37 |
| Metoprolol Succinate | Metoprolol Succinate | 178 | 60 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 174 | 59 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 172 | 127 |
| Lactulose | Lactulose | 169 | 63 |
| Meclizine Hcl | Meclizine Hcl | 159 | 82 |
| Nifedipine Er | Nifedipine | 153 | 45 |
| Januvia | Sitagliptin Phosphate | 150 | 38 |
| Montelukast Sodium | Montelukast Sodium | 143 | 46 |
| Eliquis | Apixaban | 137 | 33 |
| Farxiga | Dapagliflozin Propanediol | 133 | 38 |
| Methocarbamol | Methocarbamol | 132 | 68 |
| Donepezil Hcl | Donepezil Hcl | 125 | 33 |
| Pravastatin Sodium | Pravastatin Sodium | 119 | 34 |
| Sertraline Hcl | Sertraline Hcl | 117 | 36 |
| Finasteride | Finasteride | 115 | 41 |
| Acetaminophen-Codeine | Acetaminophen With Codeine | 111 | 54 |
| Hydrochlorothiazide | Hydrochlorothiazide | 109 | 38 |
| Clonazepam | Clonazepam | 108 | 15 |
| Famotidine | Famotidine | 107 | 35 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 103 | 50 |
| Levofloxacin | Levofloxacin | 102 | 87 |
| Levocetirizine Dihydrochloride | Levocetirizine Dihydrochloride | 101 | 35 |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 100 | 49 |
| Atenolol | Atenolol | 97 | 33 |
| Betamethasone Diprop Augmented | Betamethasone/Propylene Glyc | 96 | 44 |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 93 | 25 |
| Hydralazine Hcl | Hydralazine Hcl | 91 | 29 |
| Mupirocin | Mupirocin | 87 | 52 |
| Metformin Hcl Er | Metformin Hcl | 86 | 38 |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 86 | 27 |
| Tenofovir Disoproxil Fumarate | Tenofovir Disoproxil Fumarate | 86 | 26 |
| Allopurinol | Allopurinol | 85 | 27 |
| Lorazepam | Lorazepam | 82 | 16 |
| Quetiapine Fumarate | Quetiapine Fumarate | 80 | 17 |
| Morphine Sulfate Er | Morphine Sulfate | 76 | 11 |
| Ondansetron Hcl | Ondansetron Hcl | 76 | 29 |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 74 | 28 |
| Cephalexin | Cephalexin | 71 | 52 |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 70 | 24 |
| Ketoconazole | Ketoconazole | 68 | 26 |
| Prednisone | Prednisone | 68 | 22 |
| Diphenoxylate-Atropine | Diphenoxylate Hcl/Atropine | 67 | 50 |
| Escitalopram Oxalate | Escitalopram Oxalate | 66 | 20 |
| Doxycycline Hyclate | Doxycycline Hyclate | 64 | 48 |
| Paroxetine Hcl | Paroxetine Hcl | 64 | 16 |
| Carbidopa-Levodopa | Carbidopa/Levodopa | 60 | suppressed |
| Dropsafe Prep Pads | Alcohol Antiseptic Pads | 59 | 23 |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 58 | 19 |
| Oxycodone Hcl | Oxycodone Hcl | 56 | 12 |
| Temazepam | Temazepam | 56 | suppressed |
| Ibandronate Sodium | Ibandronate Sodium | 53 | 19 |
| Megestrol Acetate | Megestrol Acetate | 52 | 18 |
| Rivastigmine | Rivastigmine Tartrate | 52 | 11 |
| Ozempic | Semaglutide | 51 | 16 |
| Dicyclomine Hcl | Dicyclomine Hcl | 50 | 16 |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 50 | 14 |
| Nystatin | Nystatin | 50 | 26 |
| Citalopram Hbr | Citalopram Hydrobromide | 49 | 17 |
| Amoxicillin | Amoxicillin | 48 | 31 |
| Ibuprofen | Ibuprofen | 48 | 18 |
| Levetiracetam | Levetiracetam | 48 | suppressed |
| Sildenafil Citrate | Sildenafil Citrate | 48 | 13 |
| Oxybutynin Chloride | Oxybutynin Chloride | 47 | 13 |
| Tizanidine Hcl | Tizanidine Hcl | 46 | 12 |
| Ezetimibe | Ezetimibe | 45 | 14 |
| Doxazosin Mesylate | Doxazosin Mesylate | 44 | 12 |
| Gemtesa | Vibegron | 44 | suppressed |
| Metoclopramide Hcl | Metoclopramide Hcl | 44 | 28 |
| Potassium Chloride | Potassium Chloride | 44 | 15 |
| Symbicort | Budesonide/Formoterol Fumarate | 43 | 12 |
| Amlodipine Besylate-Benazepril | Amlodipine Besylate/Benazepril | 41 | 11 |
| Naproxen | Naproxen | 41 | 13 |
| Nitroglycerin | Nitroglycerin | 41 | 20 |
| Betamethasone Dipropionate | Betamethasone Dipropionate | 40 | 27 |
| Duloxetine Hcl | Duloxetine Hcl | 40 | 12 |
| Torsemide | Torsemide | 40 | 16 |
| Azelastine Hcl | Azelastine Hcl | 39 | 15 |
| Diazepam | Diazepam | 38 | 11 |
| Tresiba Flextouch U-100 | Insulin Degludec | 37 | suppressed |
| Vascepa | Icosapent Ethyl | 37 | 12 |
| Ranolazine Er | Ranolazine | 36 | suppressed |
| Rybelsus | Semaglutide | 36 | suppressed |
| Ammonium Lactate | Ammonium Lactate | 35 | suppressed |
| Ipratropium-Albuterol | Ipratropium/Albuterol Sulfate | 35 | suppressed |
| Myrbetriq | Mirabegron | 35 | 11 |
| Buspirone Hcl | Buspirone Hcl | 34 | 12 |
| Lantus | Insulin Glargine,hum.Rec.Anlog | 34 | 13 |
| Ventolin Hfa | Albuterol Sulfate | 34 | suppressed |
| Clonidine | Clonidine | 33 | suppressed |
| Ofloxacin | Ofloxacin | 33 | 20 |
| Triamterene-Hydrochlorothiazid | Triamterene/Hydrochlorothiazid | 33 | 11 |
| Fluconazole | Fluconazole | 32 | 17 |
| Ketorolac Tromethamine | Ketorolac Tromethamine | 32 | 17 |
| Ondansetron Odt | Ondansetron | 32 | 13 |
| Pioglitazone Hcl | Pioglitazone Hcl | 32 | 11 |
| Lovastatin | Lovastatin | 30 | suppressed |
| Novolog Flexpen | Insulin Aspart | 30 | 11 |
| Valsartan | Valsartan | 30 | 11 |
| Gemfibrozil | Gemfibrozil | 29 | suppressed |
| Acyclovir | Acyclovir | 28 | 11 |
| Baclofen | Baclofen | 28 | suppressed |
| Benazepril Hcl | Benazepril Hcl | 28 | suppressed |
| Glipizide | Glipizide | 27 | suppressed |
| Morphine Sulfate | Morphine Sulfate | 27 | suppressed |
| Prolia | Denosumab | 27 | 18 |
| Propranolol Hcl | Propranolol Hcl | 27 | suppressed |
| Sucralfate | Sucralfate | 27 | 21 |
| Synthroid | Levothyroxine Sodium | 27 | suppressed |
| Bumetanide | Bumetanide | 26 | suppressed |
| Clotrimazole-Betamethasone | Clotrimazole/Betamethasone Dip | 26 | 17 |
| Linzess | Linaclotide | 26 | suppressed |
| Metronidazole | Metronidazole | 26 | suppressed |
| Gentamicin Sulfate | Gentamicin Sulfate | 25 | 15 |
| Carbidopa-Levodopa Er | Carbidopa/Levodopa | 24 | suppressed |
| Combivent Respimat | Ipratropium/Albuterol Sulfate | 24 | suppressed |
| Nano 2nd Gen Pen Needle | Pen Needle, Diabetic | 24 | 13 |
| Spironolactone | Spironolactone | 24 | suppressed |
| Trulicity | Dulaglutide | 24 | suppressed |
| Valacyclovir | Valacyclovir Hcl | 24 | suppressed |
| Vemlidy | Tenofovir Alafenamide | 24 | suppressed |
| Bisoprolol Fumarate | Bisoprolol Fumarate | 23 | suppressed |
| Midodrine Hcl | Midodrine Hcl | 23 | suppressed |
| Topiramate | Topiramate | 23 | suppressed |
| Repatha Sureclick | Evolocumab | 22 | suppressed |
| Amiodarone Hcl | Amiodarone Hcl | 21 | suppressed |
| Dextroamphetamine-Amphetamine | Dextroamphetamine/Amphetamine | 21 | suppressed |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 21 | suppressed |
| Hydrocortisone | Hydrocortisone | 21 | suppressed |
| Lidocaine | Lidocaine | 21 | suppressed |
| Xarelto | Rivaroxaban | 21 | suppressed |
| Nuplazid | Pimavanserin Tartrate | 20 | suppressed |
| Olmesartan-Hydrochlorothiazide | Olmesartan/Hydrochlorothiazide | 20 | suppressed |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 18 | 12 |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 18 | suppressed |
| Labetalol Hcl | Labetalol Hcl | 18 | suppressed |
| Latanoprost | Latanoprost | 18 | suppressed |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 18 | 14 |
| Oseltamivir Phosphate | Oseltamivir Phosphate | 18 | 18 |
| Breztri Aerosphere | Budesonide/Glycopyr/Formoterol | 17 | suppressed |
| Diltiazem Hcl | Diltiazem Hcl | 17 | suppressed |
| Loperamide | Loperamide Hcl | 17 | suppressed |
| Methimazole | Methimazole | 17 | suppressed |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 16 | suppressed |
| Fluoxetine Hcl | Fluoxetine Hcl | 16 | suppressed |
| Glipizide Er | Glipizide | 16 | suppressed |
| Lamotrigine | Lamotrigine | 16 | suppressed |
| Lansoprazole | Lansoprazole | 16 | suppressed |
| Mounjaro | Tirzepatide | 16 | suppressed |
| Sumatriptan Succinate | Sumatriptan Succinate | 16 | suppressed |
| Telmisartan | Telmisartan | 16 | suppressed |
| Valsartan-Hydrochlorothiazide | Valsartan/Hydrochlorothiazide | 16 | suppressed |
| Warfarin Sodium | Warfarin Sodium | 16 | suppressed |
| Alcohol Prep Pads | Alcohol Antiseptic Pads | 15 | suppressed |
| Insulin Lispro | Insulin Lispro | 15 | suppressed |
| Mometasone Furoate | Mometasone Furoate | 15 | suppressed |
| Silver Sulfadiazine | Silver Sulfadiazine | 15 | suppressed |
| Amitriptyline Hcl | Amitriptyline Hcl | 14 | suppressed |
| Erythromycin | Erythromycin Base | 14 | suppressed |
| Glycopyrrolate | Glycopyrrolate | 14 | suppressed |
| Lacosamide | Lacosamide | 14 | suppressed |
| Pregabalin | Pregabalin | 14 | suppressed |
| Ropinirole Hcl | Ropinirole Hcl | 14 | suppressed |
| Brilinta | Ticagrelor | 13 | suppressed |
| Bupropion Xl | Bupropion Hcl | 13 | suppressed |
| Clobetasol Propionate | Clobetasol Propionate | 13 | suppressed |
| Droplet Pen Needle | Pen Needle, Diabetic | 13 | suppressed |
| Low-Ogestrel | Norgestrel-Ethinyl Estradiol | 13 | suppressed |
| Oxcarbazepine | Oxcarbazepine | 13 | suppressed |
| Breo Ellipta | Fluticasone/Vilanterol | 12 | suppressed |
| Divalproex Sodium | Divalproex Sodium | 12 | suppressed |
| Enalapril Maleate | Enalapril Maleate | 12 | suppressed |
| Folic Acid | Folic Acid | 12 | suppressed |
| Methenamine Hippurate | Methenamine Hippurate | 12 | suppressed |
| Nitrofurantoin | Nitrofurantoin Macrocrystal | 12 | suppressed |
| Phenazopyridine Hcl | Phenazopyridine Hcl | 12 | suppressed |
| Rivastigmine | Rivastigmine | 12 | suppressed |
| Scopolamine | Scopolamine | 12 | suppressed |
| Ssd | Silver Sulfadiazine | 12 | suppressed |
| Terazosin Hcl | Terazosin Hcl | 12 | suppressed |
| Tresiba Flextouch U-200 | Insulin Degludec | 12 | suppressed |
| Aripiprazole | Aripiprazole | 11 | suppressed |
| Celecoxib | Celecoxib | 11 | suppressed |
| Diltiazem 24hr Er | Diltiazem Hcl | 11 | suppressed |
| Entresto | Sacubitril/Valsartan | 11 | suppressed |
| Janumet | Sitagliptin Phos/Metformin Hcl | 11 | suppressed |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 11 | suppressed |
| Ultra-Fine Mini Pen Needle | Pen Needle, Diabetic | 11 | suppressed |
| Zonisamide | Zonisamide | 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 | $121.80 · 1 records | Gilead Sciences, Inc. | — | 1 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- How do you evaluate evidence when you have a financial relationship with Gilead Sciences, 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