Healthcare provider profile · identity verified

Joseph John Barth, MD

Internal Medicine · PRINCE FREDERICK, MD · NPI 1164571741

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	618	169
Losartan Potassium	Losartan Potassium	439	128
Tamsulosin Hcl	Tamsulosin Hcl	251	61
Gabapentin	Gabapentin	250	80
Hydrochlorothiazide	Hydrochlorothiazide	250	67
Lisinopril	Lisinopril	245	66
Pantoprazole Sodium	Pantoprazole Sodium	230	64
Alprazolam	Alprazolam	207	42
Simvastatin	Simvastatin	200	51
Levothyroxine Sodium	Levothyroxine Sodium	187	48
Amlodipine Besylate	Amlodipine Besylate	166	47
Metoprolol Succinate	Metoprolol Succinate	144	45
Omeprazole	Omeprazole	138	42
Zolpidem Tartrate	Zolpidem Tartrate	128	20
Carvedilol	Carvedilol	126	33
Eliquis	Apixaban	124	31
Rosuvastatin Calcium	Rosuvastatin Calcium	123	37
Albuterol Sulfate Hfa	Albuterol Sulfate	110	53
Metformin Hcl	Metformin Hcl	106	28
Prednisone	Prednisone	97	48
Metformin Hcl Er	Metformin Hcl	94	27
Allopurinol	Allopurinol	93	24
Famotidine	Famotidine	92	20
Metoprolol Tartrate	Metoprolol Tartrate	87	25
Tramadol Hcl	Tramadol Hcl	85	19
Atenolol	Atenolol	84	27
Furosemide	Furosemide	84	30
Dutasteride	Dutasteride	82	20
Fluticasone Propionate	Fluticasone Propionate	75	28
Finasteride	Finasteride	74	23
Clopidogrel	Clopidogrel Bisulfate	65	16
Memantine Hcl	Memantine Hcl	62	11
Sertraline Hcl	Sertraline Hcl	62	14
Hydralazine Hcl	Hydralazine Hcl	61	23
Potassium Chloride	Potassium Chloride	59	21
Eplerenone	Eplerenone	57	19
Glimepiride	Glimepiride	57	19
Doxycycline Monohydrate	Doxycycline Monohydrate	56	42
Citalopram Hbr	Citalopram Hydrobromide	53	15
Jardiance	Empagliflozin	53	13
Spironolactone	Spironolactone	53	15
Mirtazapine	Mirtazapine	52	14
Pravastatin Sodium	Pravastatin Sodium	51	16
Escitalopram Oxalate	Escitalopram Oxalate	48	14
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	48	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	47	13
Trazodone Hcl	Trazodone Hcl	46	14
Warfarin Sodium	Warfarin Sodium	44	11
Montelukast Sodium	Montelukast Sodium	42	13
Breo Ellipta	Fluticasone/Vilanterol	41	13
Meloxicam	Meloxicam	41	13
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	41	11
Xarelto	Rivaroxaban	41	suppressed
Azithromycin	Azithromycin	40	34
Duloxetine Hcl	Duloxetine Hcl	39	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	38	12
Lansoprazole	Lansoprazole	37	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	37	11
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	35	17
Ciprofloxacin Hcl	Ciprofloxacin Hcl	34	27
Clonazepam	Clonazepam	33	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	32	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	32	suppressed
Labetalol Hcl	Labetalol Hcl	31	suppressed
Buspirone Hcl	Buspirone Hcl	30	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	30	18
Diazepam	Diazepam	29	13
Bupropion Hcl Sr	Bupropion Hcl	28	suppressed
Ketoconazole	Ketoconazole	28	13
Mupirocin	Mupirocin	28	15
Colchicine	Colchicine	27	18
Ibuprofen	Ibuprofen	27	suppressed
Donepezil Hcl	Donepezil Hcl	26	11
Levofloxacin	Levofloxacin	25	18
Propranolol Hcl Er	Propranolol Hcl	25	suppressed
Alendronate Sodium	Alendronate Sodium	24	suppressed
Januvia	Sitagliptin Phosphate	24	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	24	suppressed
Terbinafine Hcl	Terbinafine Hcl	24	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	22	19
Esomeprazole Magnesium	Esomeprazole Magnesium	22	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	21	suppressed
Levetiracetam	Levetiracetam	21	suppressed
Chlordiazepoxide Hcl	Chlordiazepoxide Hcl	20	suppressed
Doxepin Hcl	Doxepin Hcl	20	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	20	suppressed
Paroxetine Hcl	Paroxetine Hcl	20	suppressed
Synthroid	Levothyroxine Sodium	20	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	18	suppressed
Lidocaine	Lidocaine	18	suppressed
Amoxicillin	Amoxicillin	17	15
Cefuroxime	Cefuroxime Axetil	17	13
Felodipine Er	Felodipine	17	suppressed
Lorazepam	Lorazepam	17	suppressed
Nifedipine Er	Nifedipine	17	suppressed
Trulicity	Dulaglutide	17	suppressed
Ultra-Fine Mini Pen Needle	Pen Needle, Diabetic	17	suppressed
Valacyclovir	Valacyclovir Hcl	17	suppressed
Verapamil Er	Verapamil Hcl	17	suppressed
Ezetimibe	Ezetimibe	16	suppressed
Myrbetriq	Mirabegron	16	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	16	suppressed
Meclizine Hcl	Meclizine Hcl	15	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	15	15
Celecoxib	Celecoxib	14	suppressed
Chlorthalidone	Chlorthalidone	14	suppressed
Ozempic	Semaglutide	14	suppressed
Ropinirole Hcl	Ropinirole Hcl	14	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	14	suppressed
Bupropion Xl	Bupropion Hcl	13	suppressed
Isosorbide Mononitrate	Isosorbide Mononitrate	13	suppressed
Tolterodine Tartrate	Tolterodine Tartrate	13	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	12	suppressed
Advair Diskus	Fluticasone Propion/Salmeterol	12	suppressed
Benazepril Hcl	Benazepril Hcl	12	suppressed
Benztropine Mesylate	Benztropine Mesylate	12	suppressed
Candesartan Cilexetil	Candesartan Cilexetil	12	suppressed
Fenofibrate	Fenofibrate	12	suppressed
Pregabalin	Pregabalin	12	suppressed
Azelastine Hcl	Azelastine Hcl	11	suppressed
Digoxin	Digoxin	11	suppressed
Tizanidine Hcl	Tizanidine Hcl	11	suppressed
Topiramate	Topiramate	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