Healthcare provider profile · identity verified

James P. Volberding, M.D.

Internal Medicine · MILWAUKEE, WI · NPI 1629007125

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	887	208
Amlodipine Besylate	Amlodipine Besylate	655	160
Losartan Potassium	Losartan Potassium	651	157
Levothyroxine Sodium	Levothyroxine Sodium	468	90
Omeprazole	Omeprazole	391	82
Eliquis	Apixaban	346	46
Furosemide	Furosemide	320	59
Metoprolol Succinate	Metoprolol Succinate	292	68
Hydrochlorothiazide	Hydrochlorothiazide	281	67
Gabapentin	Gabapentin	277	52
Lisinopril	Lisinopril	267	71
Doxazosin Mesylate	Doxazosin Mesylate	256	53
Metformin Hcl	Metformin Hcl	243	67
Rosuvastatin Calcium	Rosuvastatin Calcium	220	62
Sertraline Hcl	Sertraline Hcl	220	42
Oxycodone Hcl	Oxycodone Hcl	208	28
Zolpidem Tartrate	Zolpidem Tartrate	190	37
Escitalopram Oxalate	Escitalopram Oxalate	180	40
Lorazepam	Lorazepam	177	39
Potassium Chloride	Potassium Chloride	176	41
Trazodone Hcl	Trazodone Hcl	162	51
Carvedilol	Carvedilol	157	41
Metoprolol Tartrate	Metoprolol Tartrate	155	25
Famotidine	Famotidine	146	34
Allopurinol	Allopurinol	144	36
Mirtazapine	Mirtazapine	142	28
Simvastatin	Simvastatin	140	40
Tamsulosin Hcl	Tamsulosin Hcl	140	41
Pantoprazole Sodium	Pantoprazole Sodium	136	35
Fluoxetine Hcl	Fluoxetine Hcl	134	33
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	130	17
Alprazolam	Alprazolam	113	32
Ezetimibe	Ezetimibe	110	27
Donepezil Hcl	Donepezil Hcl	103	20
Albuterol Sulfate Hfa	Albuterol Sulfate	98	29
Pravastatin Sodium	Pravastatin Sodium	96	28
Tramadol Hcl	Tramadol Hcl	96	41
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	96	27
Irbesartan	Irbesartan	90	23
Clopidogrel	Clopidogrel Bisulfate	83	20
Duloxetine Hcl	Duloxetine Hcl	76	12
Hydralazine Hcl	Hydralazine Hcl	74	13
Bupropion Xl	Bupropion Hcl	73	19
Memantine Hcl	Memantine Hcl	73	12
Warfarin Sodium	Warfarin Sodium	72	12
Fluticasone Propionate	Fluticasone Propionate	68	26
Glipizide Er	Glipizide	68	16
Prednisone	Prednisone	66	36
Spironolactone	Spironolactone	66	14
Triamcinolone Acetonide	Triamcinolone Acetonide	66	31
Synthroid	Levothyroxine Sodium	63	13
Finasteride	Finasteride	61	12
Clonazepam	Clonazepam	60	11
Latanoprost	Latanoprost	58	suppressed
Ibandronate Sodium	Ibandronate Sodium	57	13
Diazepam	Diazepam	56	13
Trulicity	Dulaglutide	56	11
Venlafaxine Hcl Er	Venlafaxine Hcl	56	13
Propranolol Hcl	Propranolol Hcl	55	18
Tizanidine Hcl	Tizanidine Hcl	54	19
Celecoxib	Celecoxib	52	17
Doxycycline Monohydrate	Doxycycline Monohydrate	51	44
Metformin Hcl Er	Metformin Hcl	51	12
Methylphenidate Hcl	Methylphenidate Hcl	47	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	47	13
Diclofenac Sodium	Diclofenac Sodium	45	22
Glimepiride	Glimepiride	44	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	43	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	42	24
Acetaminophen-Codeine	Acetaminophen With Codeine	40	suppressed
Buspirone Hcl	Buspirone Hcl	39	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	39	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	39	suppressed
Myrbetriq	Mirabegron	39	13
Jardiance	Empagliflozin	38	suppressed
Sucralfate	Sucralfate	38	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	38	suppressed
Atenolol	Atenolol	36	suppressed
Metolazone	Metolazone	36	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	35	suppressed
Ramipril	Ramipril	35	suppressed
Testosterone	Testosterone	35	suppressed
Midodrine Hcl	Midodrine Hcl	34	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	33	suppressed
Azithromycin	Azithromycin	32	25
Cephalexin	Cephalexin	32	23
Citalopram Hbr	Citalopram Hydrobromide	32	11
Pregabalin	Pregabalin	31	suppressed
Testosterone Cypionate	Testosterone Cypionate	31	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	31	suppressed
Valacyclovir	Valacyclovir Hcl	31	17
Alendronate Sodium	Alendronate Sodium	30	suppressed
Alfuzosin Hcl Er	Alfuzosin Hcl	30	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	30	12
Paroxetine Hcl	Paroxetine Hcl	30	suppressed
Nystatin	Nystatin	29	12
Bupropion Hcl Sr	Bupropion Hcl	28	suppressed
Clonidine	Clonidine	28	suppressed
Ipratropium Bromide	Ipratropium Bromide	28	suppressed
Januvia	Sitagliptin Phosphate	28	suppressed
Benazepril Hcl	Benazepril Hcl	27	suppressed
Bumetanide	Bumetanide	27	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	27	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	26	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	26	suppressed
Entresto	Sacubitril/Valsartan	26	suppressed
Indapamide	Indapamide	26	suppressed
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	26	suppressed
Ozempic	Semaglutide	26	suppressed
Amiodarone Hcl	Amiodarone Hcl	25	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	25	suppressed
Klor-Con M20	Potassium Chloride	25	suppressed
Mounjaro	Tirzepatide	25	suppressed
Buprenorphine-Naloxone	Buprenorphine Hcl/Naloxone Hcl	24	suppressed
Montelukast Sodium	Montelukast Sodium	24	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	24	19
Venlafaxine Hcl	Venlafaxine Hcl	24	suppressed
Arnuity Ellipta	Fluticasone Furoate	22	suppressed
Meloxicam	Meloxicam	22	suppressed
Verapamil Er	Verapamil Hcl	22	suppressed
Divalproex Sodium	Divalproex Sodium	21	suppressed
Folic Acid	Folic Acid	21	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	21	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	20	20
Lactulose	Lactulose	20	suppressed
Ondansetron Odt	Ondansetron	20	11
Rivastigmine	Rivastigmine	20	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	19	16
Dutasteride	Dutasteride	19	suppressed
Fenofibrate	Fenofibrate	19	suppressed
Lamotrigine	Lamotrigine	19	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	19	suppressed
Potassium Citrate Er	Potassium Citrate	19	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	19	suppressed
Temazepam	Temazepam	19	suppressed
Baclofen	Baclofen	18	suppressed
Eplerenone	Eplerenone	18	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	18	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	18	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	18	suppressed
Symbicort	Budesonide/Formoterol Fumarate	18	suppressed
Xarelto	Rivaroxaban	18	suppressed
Advair Hfa	Fluticasone Propion/Salmeterol	17	suppressed
Amoxicillin	Amoxicillin	17	15
Carbidopa-Levodopa	Carbidopa/Levodopa	17	suppressed
Clindamycin Hcl	Clindamycin Hcl	17	11
Erythromycin	Erythromycin Base	17	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	17	suppressed
Levetiracetam	Levetiracetam	17	suppressed
Movantik	Naloxegol Oxalate	17	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	17	17
Fluconazole	Fluconazole	16	suppressed
Bethanechol Chloride	Bethanechol Chloride	15	suppressed
Cyclosporine	Cyclosporine	15	suppressed
Loperamide	Loperamide Hcl	15	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	15	suppressed
Timolol Maleate	Timolol Maleate	15	suppressed
Veltassa	Patiromer Calcium Sorbitex	15	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	14	suppressed
Fesoterodine Fumarate Er	Fesoterodine Fumarate	14	suppressed
Hydrocortisone	Hydrocortisone	14	suppressed
Levocarnitine	Levocarnitine	14	suppressed
Lidocaine	Lidocaine	14	suppressed
Ibuprofen	Ibuprofen	13	suppressed
Isosorbide Mononitrate	Isosorbide Mononitrate	13	suppressed
Meclizine Hcl	Meclizine Hcl	13	suppressed
Morphine Sulfate Er	Morphine Sulfate	13	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	13	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	12	suppressed
Cefuroxime	Cefuroxime Axetil	12	suppressed
Humulin 70/30 Kwikpen	Insulin Nph Hum/Reg Insulin Hm	12	suppressed
Lansoprazole	Lansoprazole	12	suppressed
Nitroglycerin	Nitroglycerin	12	11
Nortriptyline Hcl	Nortriptyline Hcl	12	suppressed
Ondansetron Hcl	Ondansetron Hcl	12	suppressed
Telmisartan	Telmisartan	12	suppressed
Valsartan	Valsartan	12	suppressed
Aripiprazole	Aripiprazole	11	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	11	suppressed
Ketorolac Tromethamine	Ketorolac Tromethamine	11	suppressed
Minoxidil	Minoxidil	11	suppressed
Rytary	Carbidopa/Levodopa	11	suppressed
Suboxone	Buprenorphine Hcl/Naloxone 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