Healthcare provider profile · identity verified

Daniel Dean Washburn, MD

Internal Medicine · ENID, OK · NPI 1013901461

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
Levothyroxine Sodium	Levothyroxine Sodium	444	107
Atorvastatin Calcium	Atorvastatin Calcium	358	87
Furosemide	Furosemide	251	60
Lisinopril	Lisinopril	247	52
Potassium Chloride	Potassium Chloride	218	58
Amlodipine Besylate	Amlodipine Besylate	204	51
Eliquis	Apixaban	195	24
Pantoprazole Sodium	Pantoprazole Sodium	192	48
Losartan Potassium	Losartan Potassium	179	39
Gabapentin	Gabapentin	174	45
Methimazole	Methimazole	172	48
Metoprolol Tartrate	Metoprolol Tartrate	168	32
Ozempic	Semaglutide	166	30
Hydrochlorothiazide	Hydrochlorothiazide	161	41
Omeprazole	Omeprazole	157	36
Metformin Hcl Er	Metformin Hcl	155	41
Glipizide	Glipizide	153	37
Jardiance	Empagliflozin	146	24
Simvastatin	Simvastatin	145	39
Buspirone Hcl	Buspirone Hcl	139	16
Rosuvastatin Calcium	Rosuvastatin Calcium	132	37
Farxiga	Dapagliflozin Propanediol	131	23
Metformin Hcl	Metformin Hcl	130	37
Escitalopram Oxalate	Escitalopram Oxalate	93	15
Sertraline Hcl	Sertraline Hcl	92	16
Tamsulosin Hcl	Tamsulosin Hcl	92	22
Citalopram Hbr	Citalopram Hydrobromide	85	16
Januvia	Sitagliptin Phosphate	85	12
Alprazolam	Alprazolam	84	12
Metoprolol Succinate	Metoprolol Succinate	84	23
Memantine Hcl	Memantine Hcl	83	13
Meloxicam	Meloxicam	82	23
Spironolactone	Spironolactone	82	14
Donepezil Hcl	Donepezil Hcl	81	17
Allopurinol	Allopurinol	78	21
Celecoxib	Celecoxib	76	13
Mirtazapine	Mirtazapine	76	14
Levetiracetam	Levetiracetam	74	14
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	72	15
Carvedilol	Carvedilol	66	15
Cinacalcet Hcl	Cinacalcet Hcl	66	11
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	62	15
Clopidogrel	Clopidogrel Bisulfate	61	19
Tresiba Flextouch U-200	Insulin Degludec	61	11
Synthroid	Levothyroxine Sodium	60	13
Quetiapine Fumarate	Quetiapine Fumarate	59	suppressed
Montelukast Sodium	Montelukast Sodium	55	17
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	53	15
Xarelto	Rivaroxaban	53	suppressed
Trazodone Hcl	Trazodone Hcl	52	15
Duloxetine Hcl	Duloxetine Hcl	51	12
Midodrine Hcl	Midodrine Hcl	46	suppressed
Risperidone	Risperidone	46	suppressed
Rybelsus	Semaglutide	46	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	43	suppressed
Lorazepam	Lorazepam	43	suppressed
Tradjenta	Linagliptin	43	suppressed
Tramadol Hcl	Tramadol Hcl	43	11
Latanoprost	Latanoprost	42	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	42	suppressed
Clonidine Hcl	Clonidine Hcl	40	suppressed
Famotidine	Famotidine	40	suppressed
Humalog Kwikpen U-100	Insulin Lispro	40	suppressed
Warfarin Sodium	Warfarin Sodium	39	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	38	suppressed
Alendronate Sodium	Alendronate Sodium	37	suppressed
Hydralazine Hcl	Hydralazine Hcl	36	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	35	suppressed
Mupirocin	Mupirocin	35	22
Toujeo Max Solostar	Insulin Glargine,hum.Rec.Anlog	35	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	35	suppressed
Ezetimibe	Ezetimibe	34	suppressed
Temazepam	Temazepam	34	suppressed
Glimepiride	Glimepiride	33	suppressed
Amiodarone Hcl	Amiodarone Hcl	32	suppressed
Fiasp Flextouch	Insulin Aspart (Niacinamide)	32	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	32	suppressed
Novolog Flexpen	Insulin Aspart	32	12
Fentanyl	Fentanyl	31	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	31	suppressed
Ondansetron Hcl	Ondansetron Hcl	31	14
Cephalexin	Cephalexin	30	19
Glipizide Er	Glipizide	30	suppressed
Paroxetine Hcl	Paroxetine Hcl	29	suppressed
Tizanidine Hcl	Tizanidine Hcl	29	suppressed
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	29	suppressed
Divalproex Sodium	Divalproex Sodium	27	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	27	suppressed
Pravastatin Sodium	Pravastatin Sodium	27	suppressed
Ropinirole Hcl	Ropinirole Hcl	26	suppressed
Humalog Kwikpen U-200	Insulin Lispro	25	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	25	suppressed
Bisoprolol-Hydrochlorothiazide	Bisoprolol/Hydrochlorothiazide	24	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	24	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	24	suppressed
Albuterol Sulfate Hfa	Albuterol Sulfate	23	12
Digoxin	Digoxin	23	suppressed
Estradiol	Estradiol	23	suppressed
Glyxambi	Empagliflozin/Linagliptin	23	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	23	suppressed
Propranolol Hcl	Propranolol Hcl	23	suppressed
Testosterone Cypionate	Testosterone Cypionate	23	suppressed
Tresiba Flextouch U-100	Insulin Degludec	22	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	22	17
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	21	suppressed
Diclofenac Sodium	Diclofenac Sodium	21	suppressed
Ipratropium Bromide	Ipratropium Bromide	21	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	21	suppressed
Atenolol	Atenolol	20	suppressed
Myrbetriq	Mirabegron	20	suppressed
Pregabalin	Pregabalin	20	suppressed
Sucralfate	Sucralfate	20	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	20	suppressed
Irbesartan	Irbesartan	19	suppressed
Lamotrigine	Lamotrigine	19	suppressed
Finasteride	Finasteride	18	suppressed
Fluticasone Propionate	Fluticasone Propionate	18	suppressed
Methotrexate	Methotrexate Sodium	18	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	18	suppressed
Primidone	Primidone	18	suppressed
Trulicity	Dulaglutide	18	suppressed
Ultra-Fine Mini Pen Needle	Pen Needle, Diabetic	18	suppressed
Fluconazole	Fluconazole	17	suppressed
Invokana	Canagliflozin	17	suppressed
Mounjaro	Tirzepatide	17	suppressed
Prednisone	Prednisone	17	suppressed
Propranolol Hcl Er	Propranolol Hcl	17	suppressed
Topiramate	Topiramate	17	suppressed
Trulance	Plecanatide	17	suppressed
Aripiprazole	Aripiprazole	16	suppressed
Azithromycin	Azithromycin	16	15
Brimonidine Tartrate	Brimonidine Tartrate	16	suppressed
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	16	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	16	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	16	11
Hydrocortisone	Hydrocortisone	15	suppressed
Calcitriol	Calcitriol	14	suppressed
Diazepam	Diazepam	14	suppressed
Glyburide	Glyburide	14	suppressed
Janumet	Sitagliptin Phos/Metformin Hcl	14	suppressed
Naproxen	Naproxen	14	suppressed
Omnipod 5 Dexg7g6 Pods (Gen 5)	Insulin Pump Cart,auto,bt,g6/7	14	suppressed
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	13	suppressed
Ibuprofen	Ibuprofen	13	suppressed
Linzess	Linaclotide	13	suppressed
Teriparatide	Teriparatide	13	suppressed
Baclofen	Baclofen	12	suppressed
Benztropine Mesylate	Benztropine Mesylate	12	suppressed
Colestipol Hcl	Colestipol Hcl	12	suppressed
Cyproheptadine Hcl	Cyproheptadine Hcl	12	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	12	suppressed
Entresto	Sacubitril/Valsartan	12	suppressed
Glipizide-Metformin	Glipizide/Metformin Hcl	12	suppressed
Imipramine Hcl	Imipramine Hcl	12	suppressed
Livalo	Pitavastatin Calcium	12	suppressed
Rexulti	Brexpiprazole	12	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	12	suppressed
Bupropion Xl	Bupropion Hcl	11	suppressed
Clonazepam	Clonazepam	11	suppressed
Colesevelam Hcl	Colesevelam Hcl	11	suppressed
Fluvoxamine Maleate	Fluvoxamine Maleate	11	suppressed
Levemir	Insulin Detemir	11	suppressed
Memantine Hcl Er	Memantine Hcl	11	suppressed
Novolog	Insulin Aspart	11	suppressed
Ondansetron Odt	Ondansetron	11	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	11	suppressed
Spironolactone-Hctz	Spironolact/Hydrochlorothiazid	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	—	—	—	—	—
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