Healthcare provider profile · identity verified

Daniel L Davies, DO

Internal Medicine · PORTSMOUTH, NH · NPI 1083683833

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	730	222
Lisinopril	Lisinopril	588	171
Amlodipine Besylate	Amlodipine Besylate	458	133
Levothyroxine Sodium	Levothyroxine Sodium	302	83
Omeprazole	Omeprazole	292	91
Hydrochlorothiazide	Hydrochlorothiazide	249	74
Metoprolol Succinate	Metoprolol Succinate	220	66
Rosuvastatin Calcium	Rosuvastatin Calcium	215	69
Simvastatin	Simvastatin	214	63
Losartan Potassium	Losartan Potassium	213	65
Gabapentin	Gabapentin	181	52
Metformin Hcl Er	Metformin Hcl	173	50
Tamsulosin Hcl	Tamsulosin Hcl	157	51
Metformin Hcl	Metformin Hcl	137	42
Escitalopram Oxalate	Escitalopram Oxalate	129	41
Furosemide	Furosemide	124	39
Pantoprazole Sodium	Pantoprazole Sodium	123	37
Eliquis	Apixaban	119	34
Metoprolol Tartrate	Metoprolol Tartrate	111	30
Albuterol Sulfate Hfa	Albuterol Sulfate	103	39
Finasteride	Finasteride	102	33
Allopurinol	Allopurinol	101	35
Trazodone Hcl	Trazodone Hcl	101	28
Lorazepam	Lorazepam	98	38
Prednisone	Prednisone	91	52
Atenolol	Atenolol	89	29
Valsartan	Valsartan	85	29
Bupropion Xl	Bupropion Hcl	83	28
Zolpidem Tartrate	Zolpidem Tartrate	83	22
Xarelto	Rivaroxaban	82	19
Sertraline Hcl	Sertraline Hcl	81	25
Glimepiride	Glimepiride	80	25
Clonazepam	Clonazepam	78	19
Spironolactone	Spironolactone	73	21
Pravastatin Sodium	Pravastatin Sodium	66	24
Carvedilol	Carvedilol	63	20
Synthroid	Levothyroxine Sodium	61	13
Meloxicam	Meloxicam	55	14
Citalopram Hbr	Citalopram Hydrobromide	52	13
Famotidine	Famotidine	51	15
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	51	13
Potassium Chloride	Potassium Chloride	51	16
Celecoxib	Celecoxib	49	13
Duloxetine Hcl	Duloxetine Hcl	48	16
Jardiance	Empagliflozin	47	20
Warfarin Sodium	Warfarin Sodium	47	12
Tramadol Hcl	Tramadol Hcl	46	18
Venlafaxine Hcl Er	Venlafaxine Hcl	46	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	44	15
Donepezil Hcl	Donepezil Hcl	43	15
Fluticasone Propionate	Fluticasone Propionate	43	18
Fluoxetine Hcl	Fluoxetine Hcl	42	11
Alendronate Sodium	Alendronate Sodium	37	11
Alprazolam	Alprazolam	37	15
Mounjaro	Tirzepatide	37	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	36	19
Doxazosin Mesylate	Doxazosin Mesylate	35	suppressed
Clopidogrel	Clopidogrel Bisulfate	33	11
Irbesartan	Irbesartan	33	11
Montelukast Sodium	Montelukast Sodium	33	12
Enalapril Maleate	Enalapril Maleate	31	suppressed
Ezetimibe	Ezetimibe	31	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	30	12
Telmisartan	Telmisartan	30	suppressed
Valacyclovir	Valacyclovir Hcl	30	16
Amitriptyline Hcl	Amitriptyline Hcl	29	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	29	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	29	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	28	27
Amoxicillin	Amoxicillin	27	12
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	25	suppressed
Mirtazapine	Mirtazapine	25	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	25	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	25	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	24	suppressed
Nystatin	Nystatin	24	12
Wixela Inhub	Fluticasone Propion/Salmeterol	24	suppressed
Lovastatin	Lovastatin	23	suppressed
Benazepril Hcl	Benazepril Hcl	22	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	22	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	21	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	21	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	21	suppressed
Glipizide Er	Glipizide	21	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	21	suppressed
Labetalol Hcl	Labetalol Hcl	21	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	21	suppressed
Ozempic	Semaglutide	21	suppressed
Sildenafil Citrate	Sildenafil Citrate	20	suppressed
Tizanidine Hcl	Tizanidine Hcl	20	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	19	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	19	suppressed
Buspirone Hcl	Buspirone Hcl	18	suppressed
Estradiol	Estradiol	18	suppressed
Levetiracetam	Levetiracetam	18	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	18	suppressed
Ondansetron Hcl	Ondansetron Hcl	18	12
Oxycodone Hcl	Oxycodone Hcl	18	suppressed
Ipratropium Bromide	Ipratropium Bromide	17	suppressed
Lansoprazole	Lansoprazole	17	suppressed
Propranolol Hcl	Propranolol Hcl	17	suppressed
Ramipril	Ramipril	17	suppressed
Chlorthalidone	Chlorthalidone	16	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	16	15
Eszopiclone	Eszopiclone	16	suppressed
Diazepam	Diazepam	15	suppressed
Meclizine Hcl	Meclizine Hcl	15	suppressed
Pregabalin	Pregabalin	15	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	14	suppressed
Fenofibrate	Fenofibrate,micronized	14	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	14	suppressed
Propranolol Hcl Er	Propranolol Hcl	14	suppressed
Sotalol	Sotalol Hcl	14	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	13	12
Ropinirole Hcl	Ropinirole Hcl	13	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	12	11
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	12	suppressed
Fesoterodine Fumarate Er	Fesoterodine Fumarate	12	suppressed
Invokana	Canagliflozin	12	suppressed
Methocarbamol	Methocarbamol	12	suppressed
Paroxetine Hcl	Paroxetine Hcl	12	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	12	suppressed
Symbicort	Budesonide/Formoterol Fumarate	12	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	12	suppressed
Trulicity	Dulaglutide	12	suppressed
Fenofibrate	Fenofibrate	11	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	11	suppressed
Rybelsus	Semaglutide	11	suppressed
Theophylline Er	Theophylline Anhydrous	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