Payment overview · 2025
General Payments
$22.48
1 reported records · 1 companies
Healthcare provider profile · identity verified
Darren S O'Neill, M.D.
Allopathic & Osteopathic Physicians|Internal Medicine · ENFIELD, CT · NPI 1861434607
Verified facts
What the public records show
CMS Open Payments records show Darren S O'Neill, M.D. received $22.48 in general payments during 2025 across 1 reported records.
PFIZER INC. accounted for 100.0% of that reported general-payment amount.
The Open Payments records used for this analysis explicitly named 2 associated products.
A separate comparison found the same explicitly named product in public Medicare Part D data: Eliquis.
PFIZER 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 ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 395 claims for Eliquis by this doctor in 2024.
PFIZER 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 PAXLOVID as an associated drug or biological on 24465 records involving 15715 distinct recipient NPIs. Public Medicare Part D data also shows 34 claims for Paxlovid 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 |
|---|---|---|---|---|---|
| PFIZER INC. | Unresolved — no canonical attribution shown | $22.48 | 100.0% | 1 | 2025 |
What were the payments for?
Payment categories
| Category | Amount | Records |
|---|---|---|
| Food and Beverage | $22.48 | 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
| Reported product | Type | Reported company | Related amount* | Records | Year |
|---|---|---|---|---|---|
| ELIQUIS Normalized: eliquis |
Drug | PFIZER INC. | $22.48 | 1 | 2025 |
Source payment records
|
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| NURTEC ODT Normalized: nurtec odt |
Drug | PFIZER INC. | $22.48 | 1 | 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
| Open Payments product | Payment year | Part D brand | Part D year | Claims | Match method | Source |
|---|---|---|---|---|---|---|
| ELIQUIS eliquis |
2025 | Eliquis | 2024 | 395 | exact normalized | Medicare Part D |
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 |
|---|---|---|---|---|---|---|
| PFIZER INC. Exact reporting entity; no affiliate inference |
2025 | ELIQUIS open payments reported associated product |
CMS Open Payments — General Payments 87112 supporting records · 36032 recipient NPIs · example record 1228794063 |
Eliquis · 2024 Exact normalized brand match · 1 Part D row |
395 | 85 |
| PFIZER INC. Exact reporting entity; no affiliate inference |
2025 | PAXLOVID open payments reported associated product |
CMS Open Payments — General Payments 24465 supporting records · 15715 recipient NPIs · example record 1228794432 |
Paxlovid · 2024 Exact normalized brand match · 1 Part D row |
34 | 34 |
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 | 1198 | 327 |
| Amlodipine Besylate | Amlodipine Besylate | 785 | 212 |
| Omeprazole | Omeprazole | 723 | 181 |
| Lisinopril | Lisinopril | 703 | 179 |
| Gabapentin | Gabapentin | 477 | 106 |
| Levothyroxine Sodium | Levothyroxine Sodium | 461 | 128 |
| Losartan Potassium | Losartan Potassium | 461 | 134 |
| Metoprolol Succinate | Metoprolol Succinate | 404 | 116 |
| Eliquis | Apixaban | 395 | 85 |
| Metformin Hcl | Metformin Hcl | 364 | 91 |
| Simvastatin | Simvastatin | 359 | 97 |
| Lorazepam | Lorazepam | 331 | 85 |
| Sertraline Hcl | Sertraline Hcl | 299 | 77 |
| Rosuvastatin Calcium | Rosuvastatin Calcium | 292 | 89 |
| Tramadol Hcl | Tramadol Hcl | 267 | 60 |
| Hydrochlorothiazide | Hydrochlorothiazide | 255 | 70 |
| Furosemide | Furosemide | 245 | 70 |
| Clonazepam | Clonazepam | 240 | 34 |
| Bupropion Xl | Bupropion Hcl | 229 | 57 |
| Escitalopram Oxalate | Escitalopram Oxalate | 223 | 54 |
| Doxycycline Hyclate | Doxycycline Hyclate | 220 | 161 |
| Oxycodone Hcl | Oxycodone Hcl | 220 | 34 |
| Trazodone Hcl | Trazodone Hcl | 212 | 56 |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 211 | 74 |
| Mounjaro | Tirzepatide | 208 | 33 |
| Methylprednisolone | Methylprednisolone | 206 | 136 |
| Donepezil Hcl | Donepezil Hcl | 189 | 46 |
| Tamsulosin Hcl | Tamsulosin Hcl | 189 | 54 |
| Citalopram Hbr | Citalopram Hydrobromide | 188 | 49 |
| Azelastine Hcl | Azelastine Hcl | 170 | 76 |
| Duloxetine Hcl | Duloxetine Hcl | 169 | 38 |
| Pravastatin Sodium | Pravastatin Sodium | 163 | 43 |
| Atenolol | Atenolol | 159 | 46 |
| Montelukast Sodium | Montelukast Sodium | 152 | 43 |
| Fluticasone Propionate | Fluticasone Propionate | 148 | 67 |
| Alprazolam | Alprazolam | 144 | 29 |
| Meloxicam | Meloxicam | 140 | 42 |
| Trulicity | Dulaglutide | 139 | 23 |
| Jardiance | Empagliflozin | 137 | 27 |
| Pantoprazole Sodium | Pantoprazole Sodium | 136 | 38 |
| Memantine Hcl | Memantine Hcl | 132 | 25 |
| Prednisone | Prednisone | 131 | 60 |
| Metoprolol Tartrate | Metoprolol Tartrate | 113 | 30 |
| Januvia | Sitagliptin Phosphate | 111 | 23 |
| Finasteride | Finasteride | 101 | 31 |
| Trelegy Ellipta | Fluticasone/Umeclidin/Vilanter | 100 | 17 |
| Ezetimibe | Ezetimibe | 99 | 25 |
| Ozempic | Semaglutide | 99 | 21 |
| Zolpidem Tartrate | Zolpidem Tartrate | 96 | 31 |
| Glimepiride | Glimepiride | 91 | 18 |
| Triamcinolone Acetonide | Triamcinolone Acetonide | 91 | 44 |
| Olmesartan Medoxomil | Olmesartan Medoxomil | 79 | 21 |
| Pregabalin | Pregabalin | 79 | 17 |
| Nitrofurantoin Mono-Macro | Nitrofurantoin Monohyd/M-Cryst | 75 | 63 |
| Synthroid | Levothyroxine Sodium | 75 | 21 |
| Cyclobenzaprine Hcl | Cyclobenzaprine Hcl | 74 | 40 |
| Oxybutynin Chloride Er | Oxybutynin Chloride | 74 | 20 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 73 | 44 |
| Famotidine | Famotidine | 72 | 23 |
| Mirtazapine | Mirtazapine | 72 | 18 |
| Carbidopa-Levodopa | Carbidopa/Levodopa | 69 | 15 |
| Carvedilol | Carvedilol | 69 | 20 |
| Valacyclovir | Valacyclovir Hcl | 69 | 28 |
| Allopurinol | Allopurinol | 67 | 21 |
| Fluoxetine Hcl | Fluoxetine Hcl | 66 | 11 |
| Hydralazine Hcl | Hydralazine Hcl | 64 | 16 |
| Baclofen | Baclofen | 63 | 14 |
| Metformin Hcl Er | Metformin Hcl | 62 | 21 |
| Warfarin Sodium | Warfarin Sodium | 59 | 21 |
| Celecoxib | Celecoxib | 58 | 17 |
| Nystatin | Nystatin | 58 | 30 |
| Clotrimazole-Betamethasone | Clotrimazole/Betamethasone Dip | 57 | 30 |
| Ondansetron Odt | Ondansetron | 56 | 30 |
| Hydrocortisone | Hydrocortisone | 54 | 23 |
| Paroxetine Hcl | Paroxetine Hcl | 54 | 14 |
| Amoxicillin | Amoxicillin | 52 | 34 |
| Diltiazem 24hr Er (Cd) | Diltiazem Hcl | 52 | 17 |
| Glipizide Er | Glipizide | 52 | 11 |
| Ibandronate Sodium | Ibandronate Sodium | 52 | 14 |
| Lisinopril-Hydrochlorothiazide | Lisinopril/Hydrochlorothiazide | 51 | 16 |
| Losartan-Hydrochlorothiazide | Losartan/Hydrochlorothiazide | 51 | 16 |
| Memantine Hcl Er | Memantine Hcl | 51 | suppressed |
| Pioglitazone Hcl | Pioglitazone Hcl | 51 | 14 |
| Butalbital-Acetaminophen-Caffe | Butalb/Acetaminophen/Caffeine | 49 | suppressed |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 49 | 16 |
| Valsartan | Valsartan | 48 | 15 |
| Azithromycin | Azithromycin | 45 | 31 |
| Potassium Chloride | Potassium Chloride | 45 | 16 |
| Xarelto | Rivaroxaban | 45 | suppressed |
| Alendronate Sodium | Alendronate Sodium | 42 | 12 |
| Clopidogrel | Clopidogrel Bisulfate | 42 | 13 |
| Bupropion Hcl Sr | Bupropion Hcl | 41 | suppressed |
| Lovastatin | Lovastatin | 41 | 11 |
| Wixela Inhub | Fluticasone Propion/Salmeterol | 41 | 14 |
| Hydromorphone Hcl | Hydromorphone Hcl | 40 | suppressed |
| Triamterene-Hydrochlorothiazid | Triamterene/Hydrochlorothiazid | 40 | 12 |
| Chlorthalidone | Chlorthalidone | 39 | 14 |
| Eszopiclone | Eszopiclone | 39 | suppressed |
| Clonidine Hcl | Clonidine Hcl | 37 | suppressed |
| Spironolactone | Spironolactone | 37 | suppressed |
| Amitriptyline Hcl | Amitriptyline Hcl | 36 | suppressed |
| Breo Ellipta | Fluticasone/Vilanterol | 36 | 11 |
| Ipratropium Bromide | Ipratropium Bromide | 35 | 14 |
| Paxlovid | Nirmatrelvir/Ritonavir | 34 | 34 |
| Quetiapine Fumarate | Quetiapine Fumarate | 34 | suppressed |
| Farxiga | Dapagliflozin Propanediol | 33 | suppressed |
| Fludrocortisone Acetate | Fludrocortisone Acetate | 33 | suppressed |
| Irbesartan | Irbesartan | 33 | suppressed |
| Olanzapine | Olanzapine | 33 | suppressed |
| Buspirone Hcl | Buspirone Hcl | 32 | suppressed |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 32 | 11 |
| Isosorbide Mononitrate Er | Isosorbide Mononitrate | 32 | suppressed |
| Valsartan-Hydrochlorothiazide | Valsartan/Hydrochlorothiazide | 32 | suppressed |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 31 | suppressed |
| Ibuprofen | Ibuprofen | 31 | suppressed |
| Oxycodone-Acetaminophen | Oxycodone Hcl/Acetaminophen | 31 | suppressed |
| Sildenafil Citrate | Sildenafil Citrate | 31 | suppressed |
| Symbicort | Budesonide/Formoterol Fumarate | 31 | suppressed |
| Temazepam | Temazepam | 31 | suppressed |
| Propranolol Hcl Er | Propranolol Hcl | 30 | suppressed |
| Topiramate | Topiramate | 30 | suppressed |
| Risperidone | Risperidone | 29 | suppressed |
| Venlafaxine Hcl Er | Venlafaxine Hcl | 29 | suppressed |
| Fluconazole | Fluconazole | 28 | suppressed |
| Ventolin Hfa | Albuterol Sulfate | 28 | suppressed |
| Diazepam | Diazepam | 27 | suppressed |
| Cephalexin | Cephalexin | 26 | 20 |
| Meclizine Hcl | Meclizine Hcl | 26 | 17 |
| Tiadylt Er | Diltiazem Hcl | 24 | suppressed |
| Dicyclomine Hcl | Dicyclomine Hcl | 23 | suppressed |
| Hydroxyzine Hcl | Hydroxyzine Hcl | 23 | suppressed |
| Lidocaine | Lidocaine | 23 | suppressed |
| Methocarbamol | Methocarbamol | 23 | suppressed |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 22 | 18 |
| Ampicillin Trihydrate | Ampicillin Trihydrate | 21 | 20 |
| Aimovig Autoinjector | Erenumab-Aooe | 20 | suppressed |
| Epinephrine | Epinephrine | 20 | 16 |
| Erythromycin | Erythromycin Base | 20 | 16 |
| Midodrine Hcl | Midodrine Hcl | 20 | suppressed |
| Sulfamethoxazole-Trimethoprim | Sulfamethoxazole/Trimethoprim | 20 | 14 |
| Ciclopirox | Ciclopirox Olamine | 19 | 11 |
| Methimazole | Methimazole | 19 | suppressed |
| Myrbetriq | Mirabegron | 19 | suppressed |
| Nifedipine Er | Nifedipine | 19 | suppressed |
| Ropinirole Hcl | Ropinirole Hcl | 19 | suppressed |
| Sumatriptan Succinate | Sumatriptan Succinate | 19 | suppressed |
| Ultra-Fine Short Pen Needle | Pen Needle, Diabetic | 19 | suppressed |
| Amlodipine Besylate-Benazepril | Amlodipine Besylate/Benazepril | 18 | suppressed |
| Clotrimazole | Clotrimazole | 18 | suppressed |
| Colchicine | Colchicine | 18 | suppressed |
| Fluticasone-Salmeterol | Fluticasone Propion/Salmeterol | 18 | suppressed |
| Gemfibrozil | Gemfibrozil | 18 | suppressed |
| Jantoven | Warfarin Sodium | 18 | suppressed |
| Pramipexole Dihydrochloride | Pramipexole Di-Hcl | 18 | suppressed |
| Raloxifene Hcl | Raloxifene Hcl | 18 | suppressed |
| Cholestyramine | Cholestyramine (With Sugar) | 17 | 11 |
| Estradiol | Estradiol | 17 | suppressed |
| Glipizide | Glipizide | 17 | suppressed |
| Nano 2nd Gen Pen Needle | Pen Needle, Diabetic | 17 | suppressed |
| Tretinoin | Tretinoin | 17 | suppressed |
| Arnuity Ellipta | Fluticasone Furoate | 16 | suppressed |
| Dilt-Xr | Diltiazem Hcl | 16 | suppressed |
| Gemtesa | Vibegron | 16 | suppressed |
| Janumet | Sitagliptin Phos/Metformin Hcl | 16 | suppressed |
| Linzess | Linaclotide | 16 | suppressed |
| Sucralfate | Sucralfate | 16 | suppressed |
| Dextroamphetamine-Amphetamine | Dextroamphetamine/Amphetamine | 15 | suppressed |
| Diclofenac Sodium | Diclofenac Sodium | 15 | suppressed |
| Fenofibrate | Fenofibrate,micronized | 15 | suppressed |
| Lantus | Insulin Glargine,hum.Rec.Anlog | 15 | suppressed |
| Methylphenidate Hcl | Methylphenidate Hcl | 15 | suppressed |
| Metolazone | Metolazone | 15 | suppressed |
| Metronidazole | Metronidazole | 15 | suppressed |
| Nitroglycerin | Nitroglycerin | 15 | suppressed |
| Oxybutynin Chloride | Oxybutynin Chloride | 15 | suppressed |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 14 | suppressed |
| Diltiazem 24hr Er (La) | Diltiazem Hcl | 14 | suppressed |
| Morphine Sulfate Er | Morphine Sulfate | 14 | suppressed |
| Nortriptyline Hcl | Nortriptyline Hcl | 14 | suppressed |
| Klor-Con M20 | Potassium Chloride | 13 | suppressed |
| Levetiracetam | Levetiracetam | 13 | suppressed |
| Nystop | Nystatin | 13 | suppressed |
| Tizanidine Hcl | Tizanidine Hcl | 13 | suppressed |
| Brilinta | Ticagrelor | 12 | suppressed |
| Calcitriol | Calcitriol | 12 | suppressed |
| Diltiazem Hcl | Diltiazem Hcl | 12 | suppressed |
| Lactulose | Lactulose | 12 | suppressed |
| Metoclopramide Hcl | Metoclopramide Hcl | 12 | suppressed |
| Naproxen | Naproxen | 12 | suppressed |
| Ranolazine Er | Ranolazine | 12 | suppressed |
| Rivastigmine | Rivastigmine Tartrate | 12 | suppressed |
| Testosterone Cypionate | Testosterone Cypionate | 12 | suppressed |
| Torsemide | Torsemide | 12 | suppressed |
| Acyclovir | Acyclovir | 11 | suppressed |
| Advair Diskus | Fluticasone Propion/Salmeterol | 11 | suppressed |
| Cyanocobalamin Injection | Cyanocobalamin (Vitamin B-12) | 11 | suppressed |
| Digoxin | Digoxin | 11 | suppressed |
| Diltiazem 24hr Er | Diltiazem Hcl | 11 | suppressed |
| Felodipine Er | Felodipine | 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 | $22.48 · 1 records | PFIZER INC. | ELIQUIS, NURTEC ODT | 2 | — |
| 2024 | — | — | — | — | Complete |
Questions to ask
Questions you could discuss with your doctor
- What role, if any, does Eliquis play in your treatment recommendations for me?
- How do you evaluate evidence when you have a financial relationship with PFIZER 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