Payment overview · 2025
General Payments
$17.33
2 reported records · 1 companies
Healthcare provider profile · identity verified
Brian Keith Calhoun, M.D.
Allopathic & Osteopathic Physicians|Family Medicine · MONROE, LA · NPI 1780697227
Verified facts
What the public records show
CMS Open Payments records show Brian Keith Calhoun, M.D. received $17.33 in general payments during 2025 across 2 reported records.
Phathom Pharmaceuticals, Inc. accounted for 100.0% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 1 associated product.
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 |
|---|---|---|---|---|---|
| Phathom Pharmaceuticals, Inc. | Unresolved — no canonical attribution shown | $17.33 | 100.0% | 2 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $17.33 | 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
| Reported product | Type | Reported company | Related amount* | Records | Year |
|---|---|---|---|---|---|
| VOQUEZNA Normalized: voquezna |
Drug | Phathom Pharmaceuticals, Inc. | $17.33 | 2 | 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
No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.
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 |
|---|---|---|---|
| Amlodipine Besylate | Amlodipine Besylate | 436 | 112 |
| Atorvastatin Calcium | Atorvastatin Calcium | 409 | 129 |
| Levothyroxine Sodium | Levothyroxine Sodium | 408 | 103 |
| Gabapentin | Gabapentin | 390 | 94 |
| Pantoprazole Sodium | Pantoprazole Sodium | 365 | 101 |
| Losartan Potassium | Losartan Potassium | 335 | 99 |
| Hydrochlorothiazide | Hydrochlorothiazide | 332 | 91 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 321 | 91 |
| Omeprazole | Omeprazole | 320 | 83 |
| Tramadol Hcl | Tramadol Hcl | 318 | 75 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 317 | 68 |
| Potassium Chloride | Potassium Chloride | 284 | 74 |
| Alprazolam | Alprazolam | 270 | 42 |
| Lisinopril | Lisinopril | 247 | 70 |
| Metoprolol Succinate | Metoprolol Succinate | 241 | 71 |
| Trazodone Hcl | Trazodone Hcl | 239 | 60 |
| Metformin Hcl Er | Metformin Hcl | 201 | 54 |
| Clonazepam | Clonazepam | 184 | 35 |
| Montelukast Sodium | Montelukast Sodium | 179 | 50 |
| Tamsulosin Hcl | Tamsulosin Hcl | 177 | 49 |
| Valsartan | Valsartan | 162 | 48 |
| Meloxicam | Meloxicam | 157 | 51 |
| Simvastatin | Simvastatin | 152 | 43 |
| Cefdinir | Cefdinir | 142 | 116 |
| Metoprolol Tartrate | Metoprolol Tartrate | 137 | 36 |
| Escitalopram Oxalate | Escitalopram Oxalate | 135 | 36 |
| Furosemide | Furosemide | 130 | 41 |
| Pregabalin | Pregabalin | 128 | 28 |
| Celecoxib | Celecoxib | 127 | 31 |
| Metformin Hcl | Metformin Hcl | 127 | 37 |
| Zolpidem Tartrate | Zolpidem Tartrate | 126 | 21 |
| Clopidogrel | Clopidogrel Bisulfate | 121 | 36 |
| Allopurinol | Allopurinol | 119 | 33 |
| Glimepiride | Glimepiride | 115 | 31 |
| Eliquis | Apixaban | 113 | 25 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 112 | 33 |
| Tizanidine Hcl | Tizanidine Hcl | 111 | 32 |
| Valsartan-Hydrochlorothiazide | Valsartan/Hydrochlorothiazide | 108 | 29 |
| Ozempic | Semaglutide | 106 | 19 |
| Mounjaro | Tirzepatide | 101 | 14 |
| Fluticasone Propionate | Fluticasone Propionate | 100 | 32 |
| Pravastatin Sodium | Pravastatin Sodium | 100 | 27 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 96 | 76 |
| Levocetirizine Dihydrochloride | Levocetirizine Dihydrochloride | 96 | 31 |
| Ezetimibe | Ezetimibe | 92 | 23 |
| Levofloxacin | Levofloxacin | 91 | 67 |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 90 | 24 |
| Nifedipine Er | Nifedipine | 87 | 22 |
| Famotidine | Famotidine | 85 | 26 |
| Finasteride | Finasteride | 85 | 23 |
| Prednisone | Prednisone | 85 | 32 |
| Methylprednisolone | Methylprednisolone | 83 | 67 |
| Ondansetron Odt | Ondansetron | 83 | 36 |
| Azelastine Hcl | Azelastine Hcl | 79 | 34 |
| Duloxetine Hcl | Duloxetine Hcl | 75 | 21 |
| Carvedilol | Carvedilol | 74 | 20 |
| Eszopiclone | Eszopiclone | 66 | 13 |
| Hydralazine Hcl | Hydralazine Hcl | 64 | 15 |
| Sertraline Hcl | Sertraline Hcl | 64 | 21 |
| Fluoxetine Hcl | Fluoxetine Hcl | 63 | 15 |
| Bupropion Xl | Bupropion Hcl | 62 | 18 |
| Clonidine Hcl | Clonidine Hcl | 62 | 16 |
| Pioglitazone Hcl | Pioglitazone Hcl | 62 | 21 |
| Donepezil Hcl | Donepezil Hcl | 61 | 18 |
| Citalopram Hbr | Citalopram Hydrobromide | 60 | 17 |
| Baclofen | Baclofen | 56 | 14 |
| Januvia | Sitagliptin Phosphate | 55 | suppressed |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 52 | 17 |
| Synthroid | Levothyroxine Sodium | 52 | 13 |
| Xarelto | Rivaroxaban | 50 | suppressed |
| Dextroamphetamine-Amphetamine | Dextroamphetamine/Amphetamine | 48 | suppressed |
| Estradiol | Estradiol | 48 | 15 |
| Spironolactone | Spironolactone | 48 | 12 |
| Amitriptyline Hcl | Amitriptyline Hcl | 44 | suppressed |
| Clindamycin Hcl | Clindamycin Hcl | 43 | 33 |
| Desvenlafaxine Succinate Er | Desvenlafaxine Succinate | 43 | suppressed |
| Memantine Hcl | Memantine Hcl | 43 | suppressed |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 43 | 27 |
| Diazepam | Diazepam | 41 | suppressed |
| Ropinirole Hcl | Ropinirole Hcl | 40 | suppressed |
| Lorazepam | Lorazepam | 39 | suppressed |
| Warfarin Sodium | Warfarin Sodium | 39 | suppressed |
| Fluconazole | Fluconazole | 38 | 27 |
| Glipizide Er | Glipizide | 38 | suppressed |
| Fenofibrate | Fenofibrate | 37 | suppressed |
| Quetiapine Fumarate | Quetiapine Fumarate | 37 | 12 |
| Bumetanide | Bumetanide | 36 | 16 |
| Doxycycline Hyclate | Doxycycline Hyclate | 36 | 30 |
| Etodolac | Etodolac | 36 | 13 |
| Azithromycin | Azithromycin | 35 | 21 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 35 | 16 |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 35 | 13 |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 34 | suppressed |
| Valacyclovir | Valacyclovir Hcl | 33 | 14 |
| Clotrimazole-Betamethasone | Clotrimazole/Betamethasone Dip | 32 | 19 |
| Phenobarbital | Phenobarbital | 31 | suppressed |
| Propranolol Hcl Er | Propranolol Hcl | 31 | suppressed |
| Stiolto Respimat | Tiotropium Br/Olodaterol Hcl | 31 | suppressed |
| Diclofenac Sodium | Diclofenac Sodium | 30 | suppressed |
| Jardiance | Empagliflozin | 29 | suppressed |
| Myrbetriq | Mirabegron | 27 | suppressed |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 26 | 24 |
| Meclizine Hcl | Meclizine Hcl | 26 | 14 |
| Rybelsus | Semaglutide | 26 | suppressed |
| Diclofenac Potassium | Diclofenac Potassium | 25 | suppressed |
| Verapamil Er | Verapamil Hcl | 25 | suppressed |
| Buspirone Hcl | Buspirone Hcl | 24 | 11 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 24 | 14 |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 24 | suppressed |
| Dicyclomine Hcl | Dicyclomine Hcl | 23 | suppressed |
| Paroxetine Hcl | Paroxetine Hcl | 23 | suppressed |
| Amiodarone Hcl | Amiodarone Hcl | 22 | suppressed |
| Doxazosin Mesylate | Doxazosin Mesylate | 22 | suppressed |
| Atenolol | Atenolol | 21 | suppressed |
| Butalbital-Acetaminophen-Caffe | Butalb/Acetaminophen/Caffeine | 21 | suppressed |
| Labetalol Hcl | Labetalol Hcl | 21 | suppressed |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 21 | suppressed |
| Ramipril | Ramipril | 21 | suppressed |
| Carisoprodol | Carisoprodol | 20 | suppressed |
| Glipizide | Glipizide | 20 | suppressed |
| Liothyronine Sodium | Liothyronine Sodium | 20 | suppressed |
| Mirtazapine | Mirtazapine | 20 | suppressed |
| Sucralfate | Sucralfate | 20 | suppressed |
| Colestipol Hcl | Colestipol Hcl | 19 | suppressed |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 19 | suppressed |
| Repatha Sureclick | Evolocumab | 19 | suppressed |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 19 | 14 |
| Acetaminophen-Codeine | Acetaminophen With Codeine | 18 | suppressed |
| Diphenoxylate-Atropine | Diphenoxylate Hcl/Atropine | 18 | suppressed |
| Glyburide | Glyburide | 18 | suppressed |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 18 | suppressed |
| Linzess | Linaclotide | 18 | suppressed |
| Raloxifene Hcl | Raloxifene Hcl | 18 | suppressed |
| Sumatriptan Succinate | Sumatriptan Succinate | 18 | suppressed |
| Tresiba Flextouch U-200 | Insulin Degludec | 18 | suppressed |
| Colchicine | Colchicine | 17 | suppressed |
| Lamotrigine | Lamotrigine | 17 | suppressed |
| Mupirocin | Mupirocin | 17 | 17 |
| Trelegy Ellipta | Fluticasone/Umeclidin/Vilanter | 17 | suppressed |
| Ventolin Hfa | Albuterol Sulfate | 17 | suppressed |
| Febuxostat | Febuxostat | 16 | suppressed |
| Telmisartan | Telmisartan | 16 | suppressed |
| Terbinafine Hcl | Terbinafine Hcl | 16 | suppressed |
| Triamterene-Hydrochlorothiazid | Triamterene/Hydrochlorothiazid | 16 | suppressed |
| Trimethoprim | Trimethoprim | 16 | suppressed |
| Amlodipine Besylate-Benazepril | Amlodipine Besylate/Benazepril | 15 | suppressed |
| Amoxicillin | Amoxicillin | 15 | suppressed |
| Paxlovid | Nirmatrelvir/Ritonavir | 15 | 15 |
| Symbicort | Budesonide/Formoterol Fumarate | 15 | suppressed |
| Bisoprolol-Hydrochlorothiazide | Bisoprolol/Hydrochlorothiazide | 14 | suppressed |
| Digoxin | Digoxin | 14 | suppressed |
| Dropsafe Prep Pads | Alcohol Antiseptic Pads | 14 | suppressed |
| Triazolam | Triazolam | 14 | suppressed |
| Ziprasidone Hcl | Ziprasidone Hcl | 14 | suppressed |
| Advair Hfa | Fluticasone Propion/Salmeterol | 13 | suppressed |
| Enalapril Maleate | Enalapril Maleate | 13 | suppressed |
| Farxiga | Dapagliflozin Propanediol | 13 | suppressed |
| Janumet Xr | Sitagliptin Phos/Metformin Hcl | 13 | suppressed |
| Ketorolac Tromethamine | Ketorolac Tromethamine | 13 | suppressed |
| Roflumilast | Roflumilast | 13 | suppressed |
| Topiramate | Topiramate | 13 | suppressed |
| Aspirin-Dipyridamole Er | Aspirin/Dipyridamole | 12 | suppressed |
| Gemfibrozil | Gemfibrozil | 12 | suppressed |
| Irbesartan | Irbesartan | 12 | suppressed |
| Lovastatin | Lovastatin | 12 | suppressed |
| Metronidazole | Metronidazole | 12 | suppressed |
| Nystatin | Nystatin | 12 | suppressed |
| Promethazine Hcl | Promethazine Hcl | 12 | suppressed |
| Rivastigmine | Rivastigmine Tartrate | 12 | suppressed |
| Spiriva Respimat | Tiotropium Bromide | 12 | suppressed |
| Temazepam | Temazepam | 12 | suppressed |
| Butalbital-Aspirin-Caffeine | Butalbital/Aspirin/Caffeine | 11 | suppressed |
| Diltiazem Hcl | Diltiazem Hcl | 11 | suppressed |
| Flecainide Acetate | Flecainide Acetate | 11 | suppressed |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 11 | suppressed |
| Lactulose | Lactulose | 11 | suppressed |
| Latanoprost | Latanoprost | 11 | suppressed |
| Methadone Hcl | Methadone Hcl | 11 | suppressed |
| Nebivolol Hcl | Nebivolol Hcl | 11 | suppressed |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 11 | suppressed |
| Oxycodone Hcl | Oxycodone Hcl | 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 | $17.33 · 2 records | Phathom Pharmaceuticals, Inc. | VOQUEZNA | — | — |
| 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