Healthcare provider profile · identity verified

Douglas B Oneill, MD

Internal Medicine · NORTH ADAMS, MA · NPI 1003893082

Profile state: partd only Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

We did not find matching Open Payments records for this doctor in 2025.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

We did not find matching Open Payments records for this doctor in the selected program year.

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.

Analysis 1 · Payment-linked products

Products named in Open Payments records

No payment-linked product analysis is available because no matching General Payment records were found for the selected year.

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.

There is no payer-company set available for this comparison.

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	747	220
Amlodipine Besylate	Amlodipine Besylate	513	156
Rosuvastatin Calcium	Rosuvastatin Calcium	425	115
Omeprazole	Omeprazole	381	100
Lisinopril	Lisinopril	379	110
Levothyroxine Sodium	Levothyroxine Sodium	371	93
Losartan Potassium	Losartan Potassium	329	90
Metoprolol Succinate	Metoprolol Succinate	325	90
Metformin Hcl	Metformin Hcl	278	82
Gabapentin	Gabapentin	250	59
Alendronate Sodium	Alendronate Sodium	239	76
Albuterol Sulfate Hfa	Albuterol Sulfate	201	60
Eliquis	Apixaban	201	51
Trulicity	Dulaglutide	196	28
Hydrochlorothiazide	Hydrochlorothiazide	185	60
Simvastatin	Simvastatin	177	52
Irbesartan	Irbesartan	168	48
Lorazepam	Lorazepam	158	41
Chlorthalidone	Chlorthalidone	147	47
Furosemide	Furosemide	129	39
Escitalopram Oxalate	Escitalopram Oxalate	121	38
Metoprolol Tartrate	Metoprolol Tartrate	121	37
Duloxetine Hcl	Duloxetine Hcl	117	29
Fluoxetine Hcl	Fluoxetine Hcl	112	26
Jardiance	Empagliflozin	107	27
Olmesartan Medoxomil	Olmesartan Medoxomil	105	34
Pantoprazole Sodium	Pantoprazole Sodium	105	33
Tamsulosin Hcl	Tamsulosin Hcl	104	35
Trazodone Hcl	Trazodone Hcl	103	32
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	96	28
Sertraline Hcl	Sertraline Hcl	94	30
Famotidine	Famotidine	93	32
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	89	16
Fluticasone Propionate	Fluticasone Propionate	88	34
Warfarin Sodium	Warfarin Sodium	86	16
Zolpidem Tartrate	Zolpidem Tartrate	86	15
Mirtazapine	Mirtazapine	83	22
Allopurinol	Allopurinol	82	23
Pravastatin Sodium	Pravastatin Sodium	82	24
Paroxetine Hcl	Paroxetine Hcl	80	16
Celecoxib	Celecoxib	79	19
Tramadol Hcl	Tramadol Hcl	78	25
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	77	28
Ozempic	Semaglutide	74	14
Spironolactone	Spironolactone	69	26
Bupropion Hcl Sr	Bupropion Hcl	66	19
Ventolin Hfa	Albuterol Sulfate	66	18
Buspirone Hcl	Buspirone Hcl	65	12
Donepezil Hcl	Donepezil Hcl	65	13
Topiramate	Topiramate	64	13
Finasteride	Finasteride	60	19
Carvedilol	Carvedilol	57	19
Valsartan	Valsartan	57	18
Ezetimibe	Ezetimibe	55	17
Clonazepam	Clonazepam	53	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	52	16
Venlafaxine Hcl Er	Venlafaxine Hcl	51	suppressed
Oxycodone Hcl	Oxycodone Hcl	50	suppressed
Ibuprofen	Ibuprofen	49	14
Diclofenac Sodium	Diclofenac Sodium	48	15
Incruse Ellipta	Umeclidinium Bromide	48	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	48	28
Prednisone	Prednisone	47	20
Pregabalin	Pregabalin	45	suppressed
Ropinirole Hcl	Ropinirole Hcl	44	suppressed
Farxiga	Dapagliflozin Propanediol	42	12
Breo Ellipta	Fluticasone/Vilanterol	41	suppressed
Citalopram Hbr	Citalopram Hydrobromide	40	14
Glipizide	Glipizide	40	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	40	suppressed
Xarelto	Rivaroxaban	40	12
Propranolol Hcl	Propranolol Hcl	39	12
Diazepam	Diazepam	38	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	37	suppressed
Lovastatin	Lovastatin	34	12
Potassium Chloride	Potassium Chloride	34	suppressed
Clopidogrel	Clopidogrel Bisulfate	33	11
Lamotrigine	Lamotrigine	33	suppressed
Ondansetron Hcl	Ondansetron Hcl	33	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	32	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	32	11
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	32	suppressed
Levetiracetam	Levetiracetam	31	suppressed
Metformin Hcl Er	Metformin Hcl	31	12
Synthroid	Levothyroxine Sodium	31	suppressed
Torsemide	Torsemide	31	12
Arnuity Ellipta	Fluticasone Furoate	30	suppressed
Labetalol Hcl	Labetalol Hcl	30	suppressed
Propranolol Hcl Er	Propranolol Hcl	30	suppressed
Valacyclovir	Valacyclovir Hcl	30	15
Esomeprazole Magnesium	Esomeprazole Magnesium	29	suppressed
Mounjaro	Tirzepatide	29	suppressed
Azelastine Hcl	Azelastine Hcl	28	13
Glipizide Er	Glipizide	28	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	28	suppressed
Loperamide	Loperamide Hcl	26	suppressed
Eszopiclone	Eszopiclone	25	suppressed
Montelukast Sodium	Montelukast Sodium	25	11
Spiriva Respimat	Tiotropium Bromide	24	suppressed
Symbicort	Budesonide/Formoterol Fumarate	24	suppressed
Clotrimazole	Clotrimazole	23	11
Isosorbide Mononitrate Er	Isosorbide Mononitrate	23	suppressed
Morphine Sulfate Er	Morphine Sulfate	23	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	23	suppressed
Alprazolam	Alprazolam	22	suppressed
Bupropion Xl	Bupropion Hcl	22	suppressed
Bydureon Bcise	Exenatide Microspheres	22	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	22	21
Lidocaine Hcl Viscous	Lidocaine Hcl	22	suppressed
Nystatin	Nystatin	22	suppressed
Tresiba Flextouch U-100	Insulin Degludec	22	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	21	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	21	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	20	suppressed
Meloxicam	Meloxicam	20	suppressed
Olmesartan-Hydrochlorothiazide	Olmesartan/Hydrochlorothiazide	20	suppressed
Dulera	Mometasone/Formoterol	19	suppressed
Estradiol	Estradiol	19	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	19	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	19	suppressed
Testosterone	Testosterone	19	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	18	suppressed
Lidocaine	Lidocaine	18	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	17	suppressed
Nitroglycerin	Nitroglycerin	17	11
Quetiapine Fumarate	Quetiapine Fumarate	17	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	17	suppressed
Clonidine Hcl	Clonidine Hcl	16	suppressed
Primidone	Primidone	16	suppressed
Cephalexin	Cephalexin	15	suppressed
Tizanidine Hcl	Tizanidine Hcl	15	suppressed
Rybelsus	Semaglutide	14	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	14	suppressed
Bupropion Hcl	Bupropion Hcl	13	suppressed
Carisoprodol	Carisoprodol	13	suppressed
Nifedipine Er	Nifedipine	13	suppressed
Sucralfate	Sucralfate	13	suppressed
Irbesartan-Hydrochlorothiazide	Irbesartan/Hydrochlorothiazide	12	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	12	suppressed
Promethazine Hcl	Promethazine Hcl	12	suppressed
Tolterodine Tartrate	Tolterodine Tartrate	12	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	12	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	11	suppressed
Benazepril Hcl	Benazepril Hcl	11	suppressed
Bumetanide	Bumetanide	11	suppressed
Emgality Pen	Galcanezumab-Gnlm	11	suppressed
Glimepiride	Glimepiride	11	suppressed
Hydromorphone Hcl	Hydromorphone Hcl	11	suppressed
Ketoconazole	Ketoconazole	11	suppressed
Olanzapine	Olanzapine	11	suppressed
Ondansetron Odt	Ondansetron	11	suppressed
Phenobarbital	Phenobarbital	11	suppressed
Pioglitazone Hcl	Pioglitazone 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	—	—	—	—	—
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

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error