Healthcare provider profile · identity verified

Daniel Wayne Barker, PA-C

Physician Assistant · MONTOURSVILLE, PA · NPI 1740574565

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	397	118
Omeprazole	Omeprazole	302	77
Gabapentin	Gabapentin	267	65
Lisinopril	Lisinopril	267	81
Levothyroxine Sodium	Levothyroxine Sodium	266	72
Amlodipine Besylate	Amlodipine Besylate	212	56
Furosemide	Furosemide	169	41
Losartan Potassium	Losartan Potassium	158	47
Duloxetine Hcl	Duloxetine Hcl	148	30
Hydrochlorothiazide	Hydrochlorothiazide	137	40
Albuterol Sulfate Hfa	Albuterol Sulfate	115	42
Sertraline Hcl	Sertraline Hcl	115	28
Metformin Hcl	Metformin Hcl	112	34
Tamsulosin Hcl	Tamsulosin Hcl	112	34
Metoprolol Succinate	Metoprolol Succinate	110	30
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	107	33
Jardiance	Empagliflozin	107	24
Pregabalin	Pregabalin	105	26
Rosuvastatin Calcium	Rosuvastatin Calcium	105	30
Potassium Chloride	Potassium Chloride	104	26
Prednisone	Prednisone	89	68
Buspirone Hcl	Buspirone Hcl	83	19
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	79	15
Clopidogrel	Clopidogrel Bisulfate	77	21
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	77	21
Tramadol Hcl	Tramadol Hcl	77	26
Trazodone Hcl	Trazodone Hcl	75	24
Eliquis	Apixaban	67	22
Metoprolol Tartrate	Metoprolol Tartrate	67	21
Alprazolam	Alprazolam	66	14
Meloxicam	Meloxicam	66	22
Fluticasone Propionate	Fluticasone Propionate	64	20
Ozempic	Semaglutide	62	15
Spironolactone	Spironolactone	61	12
Allopurinol	Allopurinol	60	16
Famotidine	Famotidine	60	16
Montelukast Sodium	Montelukast Sodium	58	13
Fluoxetine Hcl	Fluoxetine Hcl	57	suppressed
Diclofenac Sodium	Diclofenac Sodium	55	26
Venlafaxine Hcl Er	Venlafaxine Hcl	54	16
Tizanidine Hcl	Tizanidine Hcl	53	20
Baclofen	Baclofen	52	18
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	52	11
Warfarin Sodium	Warfarin Sodium	52	15
Atenolol	Atenolol	51	13
Metformin Hcl Er	Metformin Hcl	51	14
Lorazepam	Lorazepam	48	21
Torsemide	Torsemide	48	14
Finasteride	Finasteride	47	13
Trulicity	Dulaglutide	44	suppressed
Oxycodone Hcl	Oxycodone Hcl	42	17
Pantoprazole Sodium	Pantoprazole Sodium	42	17
Citalopram Hbr	Citalopram Hydrobromide	40	12
Topiramate	Topiramate	39	12
Glipizide Er	Glipizide	38	11
Ropinirole Hcl	Ropinirole Hcl	38	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	37	suppressed
Simvastatin	Simvastatin	36	13
Xarelto	Rivaroxaban	36	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	35	33
Clonidine Hcl	Clonidine Hcl	35	suppressed
Glipizide	Glipizide	35	11
Hydroxyzine Hcl	Hydroxyzine Hcl	33	14
Carvedilol	Carvedilol	32	12
Escitalopram Oxalate	Escitalopram Oxalate	32	11
Alendronate Sodium	Alendronate Sodium	31	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	31	28
Ezetimibe	Ezetimibe	31	13
Ondansetron Hcl	Ondansetron Hcl	30	14
Azithromycin	Azithromycin	29	26
Dicyclomine Hcl	Dicyclomine Hcl	29	suppressed
Mounjaro	Tirzepatide	29	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	29	21
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	28	26
Mirtazapine	Mirtazapine	27	suppressed
Ventolin Hfa	Albuterol Sulfate	25	11
Aripiprazole	Aripiprazole	23	suppressed
Nitroglycerin	Nitroglycerin	23	suppressed
Breo Ellipta	Fluticasone/Vilanterol	22	suppressed
Doxepin Hcl	Doxepin Hcl	22	suppressed
Propranolol Hcl	Propranolol Hcl	22	suppressed
Rybelsus	Semaglutide	22	suppressed
Amoxicillin	Amoxicillin	21	17
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	20	suppressed
Novolog Flexpen	Insulin Aspart	20	suppressed
Donepezil Hcl	Donepezil Hcl	19	suppressed
Celecoxib	Celecoxib	18	suppressed
Nifedipine Er	Nifedipine	18	suppressed
Prazosin Hcl	Prazosin Hcl	18	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	17	suppressed
Farxiga	Dapagliflozin Propanediol	17	suppressed
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	17	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	17	suppressed
Chlorthalidone	Chlorthalidone	16	suppressed
Clonazepam	Clonazepam	16	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	16	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	16	13
Valacyclovir	Valacyclovir Hcl	16	suppressed
Fluconazole	Fluconazole	15	11
Bupropion Xl	Bupropion Hcl	14	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	14	suppressed
Ibuprofen	Ibuprofen	14	suppressed
Lubiprostone	Lubiprostone	14	suppressed
Meclizine Hcl	Meclizine Hcl	14	suppressed
Naproxen	Naproxen	14	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	14	suppressed
Valsartan	Valsartan	14	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	14	suppressed
Diazepam	Diazepam	13	suppressed
Fluticasone Propionate Hfa	Fluticasone Propionate	13	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	13	suppressed
Memantine Hcl	Memantine Hcl	13	suppressed
Amiodarone Hcl	Amiodarone Hcl	12	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	12	suppressed
Entresto	Sacubitril/Valsartan	12	suppressed
Glimepiride	Glimepiride	12	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	12	suppressed
Klor-Con M20	Potassium Chloride	12	suppressed
Lamotrigine	Lamotrigine	12	suppressed
Nystatin	Nystatin	12	suppressed
Pravastatin Sodium	Pravastatin Sodium	12	suppressed
Synthroid	Levothyroxine Sodium	12	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	11	suppressed
Breztri Aerosphere	Budesonide/Glycopyr/Formoterol	11	suppressed
Bupropion Hcl Sr	Bupropion Hcl	11	suppressed
Haloperidol	Haloperidol	11	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	11	suppressed
Olanzapine	Olanzapine	11	suppressed
Pulmicort Flexhaler	Budesonide	11	suppressed
Risperidone	Risperidone	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