Healthcare provider profile · identity verified

David J Gunderman, MD

Family Practice · WASHINGTON COURT HOUSE, OH · NPI 1508861246

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	969	157
Levothyroxine Sodium	Levothyroxine Sodium	808	116
Furosemide	Furosemide	802	121
Potassium Chloride	Potassium Chloride	754	120
Eliquis	Apixaban	661	76
Gabapentin	Gabapentin	555	85
Sertraline Hcl	Sertraline Hcl	537	80
Mirtazapine	Mirtazapine	494	88
Divalproex Sodium	Divalproex Sodium	448	59
Trazodone Hcl	Trazodone Hcl	443	70
Metoprolol Tartrate	Metoprolol Tartrate	437	75
Lisinopril	Lisinopril	403	63
Amlodipine Besylate	Amlodipine Besylate	387	66
Omeprazole	Omeprazole	381	86
Tamsulosin Hcl	Tamsulosin Hcl	353	61
Metoprolol Succinate	Metoprolol Succinate	346	76
Memantine Hcl	Memantine Hcl	330	53
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	303	45
Quetiapine Fumarate	Quetiapine Fumarate	287	45
Metformin Hcl	Metformin Hcl	286	43
Ondansetron Hcl	Ondansetron Hcl	282	94
Pantoprazole Sodium	Pantoprazole Sodium	274	65
Buspirone Hcl	Buspirone Hcl	273	44
Donepezil Hcl	Donepezil Hcl	249	40
Duloxetine Hcl	Duloxetine Hcl	243	42
Tramadol Hcl	Tramadol Hcl	241	54
Levetiracetam	Levetiracetam	228	30
Hydroxyzine Hcl	Hydroxyzine Hcl	222	72
Carvedilol	Carvedilol	210	29
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	192	74
Oxycodone Hcl	Oxycodone Hcl	185	32
Ropinirole Hcl	Ropinirole Hcl	184	29
Losartan Potassium	Losartan Potassium	183	29
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	182	82
Lorazepam	Lorazepam	179	47
Cefdinir	Cefdinir	166	62
Sodium Chloride	0.9 % Sodium Chloride	165	54
Clopidogrel	Clopidogrel Bisulfate	161	39
Tizanidine Hcl	Tizanidine Hcl	146	28
Allopurinol	Allopurinol	145	25
Famotidine	Famotidine	141	35
Torsemide	Torsemide	137	25
Hydroxyzine Pamoate	Hydroxyzine Pamoate	131	32
Escitalopram Oxalate	Escitalopram Oxalate	122	24
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	116	15
Hydrochlorothiazide	Hydrochlorothiazide	112	18
Citalopram Hbr	Citalopram Hydrobromide	111	17
Warfarin Sodium	Warfarin Sodium	111	suppressed
Jardiance	Empagliflozin	109	12
Carbidopa-Levodopa	Carbidopa/Levodopa	108	11
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	107	24
Doxycycline Hyclate	Doxycycline Hyclate	102	54
Doxycycline Monohydrate	Doxycycline Monohydrate	102	40
Fluconazole	Fluconazole	102	36
Risperidone	Risperidone	102	24
Topiramate	Topiramate	102	13
Benztropine Mesylate	Benztropine Mesylate	100	13
Prednisone	Prednisone	100	38
Ertapenem	Ertapenem Sodium	99	39
Haloperidol	Haloperidol	95	16
Hydrocortisone	Hydrocortisone	95	41
Lidocaine Hcl	Lidocaine Hcl	95	50
Simvastatin	Simvastatin	95	17
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	94	14
Isosorbide Mononitrate Er	Isosorbide Mononitrate	94	14
Insulin Lispro Kwikpen U-100	Insulin Lispro	93	29
Oxybutynin Chloride	Oxybutynin Chloride	92	17
Baclofen	Baclofen	91	11
Montelukast Sodium	Montelukast Sodium	90	22
Ceftriaxone	Ceftriaxone Sodium	89	46
Fluoxetine Hcl	Fluoxetine Hcl	88	17
Nystatin	Nystatin	88	56
Januvia	Sitagliptin Phosphate	87	suppressed
Spironolactone	Spironolactone	87	21
Trulicity	Dulaglutide	87	12
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	79	11
Humalog Kwikpen U-100	Insulin Lispro	77	25
Hydralazine Hcl	Hydralazine Hcl	77	17
Olanzapine	Olanzapine	74	16
Levofloxacin	Levofloxacin	73	31
Sucralfate	Sucralfate	73	12
Atenolol	Atenolol	72	suppressed
Finasteride	Finasteride	70	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	70	67
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	66	27
Tradjenta	Linagliptin	66	suppressed
Amiodarone Hcl	Amiodarone Hcl	65	17
Ciprofloxacin Hcl	Ciprofloxacin Hcl	65	37
Clonazepam	Clonazepam	65	13
Midodrine Hcl	Midodrine Hcl	64	22
Xarelto	Rivaroxaban	64	15
Insulin Aspart Flexpen	Insulin Aspart	63	15
Klor-Con 10	Potassium Chloride	61	12
Fluticasone Propionate	Fluticasone Propionate	60	21
Zonisamide	Zonisamide	60	suppressed
Erythromycin	Erythromycin Base	59	36
Bupropion Xl	Bupropion Hcl	58	suppressed
Bethanechol Chloride	Bethanechol Chloride	57	suppressed
Pravastatin Sodium	Pravastatin Sodium	57	12
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	56	25
Latanoprost	Latanoprost	56	13
Meclizine Hcl	Meclizine Hcl	54	16
Oxybutynin Chloride Er	Oxybutynin Chloride	53	suppressed
Enoxaparin Sodium	Enoxaparin Sodium	51	suppressed
Myrbetriq	Mirabegron	51	suppressed
Albuterol Sulfate Hfa	Albuterol Sulfate	49	34
Colestipol Hcl	Colestipol Hcl	48	suppressed
Vancomycin Hcl	Vancomycin Hcl	47	20
Clonidine Hcl	Clonidine Hcl	46	suppressed
Metformin Hcl Er	Metformin Hcl	46	11
Methocarbamol	Methocarbamol	46	17
Paroxetine Hcl	Paroxetine Hcl	45	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	44	suppressed
Lactulose	Lactulose	44	11
Oseltamivir Phosphate	Oseltamivir Phosphate	43	39
Albuterol Sulfate	Albuterol Sulfate	42	14
Novolog Flexpen	Insulin Aspart	42	suppressed
Promethazine Hcl	Promethazine Hcl	42	suppressed
Alprazolam	Alprazolam	40	suppressed
Meloxicam	Meloxicam	40	suppressed
Cimetidine	Cimetidine	39	suppressed
Pregabalin	Pregabalin	39	suppressed
Alendronate Sodium	Alendronate Sodium	38	suppressed
Aripiprazole	Aripiprazole	38	suppressed
Fenofibrate	Fenofibrate	38	suppressed
Glipizide	Glipizide	38	suppressed
Humalog	Insulin Lispro	38	16
Lovastatin	Lovastatin	38	suppressed
Rosuvastatin Calcium	Rosuvastatin Calcium	38	13
Lamotrigine	Lamotrigine	37	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	37	suppressed
Clozapine	Clozapine	36	suppressed
Digoxin	Digoxin	36	suppressed
Morphine Sulfate	Morphine Sulfate	35	19
Sevelamer Carbonate	Sevelamer Carbonate	34	suppressed
Autoshield Duo Pen Needle	Pen Needle,dual Safety,diabetc	33	suppressed
Breo Ellipta	Fluticasone/Vilanterol	33	suppressed
Insulin Lispro	Insulin Lispro	33	19
Rexulti	Brexpiprazole	33	suppressed
Xifaxan	Rifaximin	33	suppressed
Entresto	Sacubitril/Valsartan	32	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	32	13
Venlafaxine Hcl	Venlafaxine Hcl	32	suppressed
Dextrose 5%-0.45% Nacl	Dextrose 5 %-0.45 % Sod Chlord	29	14
Haloperidol Lactate	Haloperidol Lactate	29	suppressed
Medroxyprogesterone Acetate	Medroxyprogesterone Acetate	29	suppressed
Sotalol	Sotalol Hcl	29	suppressed
Ammonium Lactate	Ammonium Lactate	28	13
Atropine Sulfate	Atropine Sulfate	28	20
Lidocaine Hcl	Lidocaine Hcl/Pf	28	20
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	28	suppressed
Scopolamine	Scopolamine	28	suppressed
Bumetanide	Bumetanide	27	suppressed
Cephalexin	Cephalexin	27	13
Ezetimibe	Ezetimibe	27	suppressed
Fentanyl	Fentanyl	27	suppressed
Phenobarbital	Phenobarbital	27	suppressed
Ssd	Silver Sulfadiazine	27	11
Brimonidine Tartrate	Brimonidine Tartrate	26	suppressed
Constulose	Lactulose	26	suppressed
Glipizide Er	Glipizide	26	suppressed
Propranolol Hcl	Propranolol Hcl	26	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	25	suppressed
Farxiga	Dapagliflozin Propanediol	25	suppressed
Nitroglycerin	Nitroglycerin	25	17
Levalbuterol Hcl	Levalbuterol Hcl	24	suppressed
Loperamide	Loperamide Hcl	24	14
Spiriva Respimat	Tiotropium Bromide	24	suppressed
Valacyclovir	Valacyclovir Hcl	24	11
Amoxicillin	Amoxicillin	23	16
Arnuity Ellipta	Fluticasone Furoate	23	suppressed
Carbamazepine	Carbamazepine	23	suppressed
Diclofenac Sodium	Diclofenac Sodium	23	13
Esomeprazole Magnesium	Esomeprazole Magnesium	23	suppressed
Fiasp Flextouch	Insulin Aspart (Niacinamide)	23	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	23	suppressed
Clindamycin Hcl	Clindamycin Hcl	22	suppressed
Piperacillin-Tazobactam	Piperacillin Sodium/Tazobactam	22	11
Prazosin Hcl	Prazosin Hcl	22	suppressed
Abrysvo	Rsv Vacc, Pref A And Pref B/Pf	21	21
Desvenlafaxine Succinate Er	Desvenlafaxine Succinate	21	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	21	suppressed
Oxcarbazepine	Oxcarbazepine	21	suppressed
Azithromycin	Azithromycin	20	suppressed
Diltiazem Hcl	Diltiazem Hcl	20	suppressed
Kapspargo Sprinkle	Metoprolol Succinate	20	suppressed
Ketoconazole	Ketoconazole	20	14
Lansoprazole	Lansoprazole	20	suppressed
Moxifloxacin	Moxifloxacin Hcl	20	suppressed
Nystop	Nystatin	20	14
Benazepril Hcl	Benazepril Hcl	19	suppressed
Breyna	Budesonide/Formoterol Fumarate	19	suppressed
Glucagon Emergency Kit	Glucagon	19	suppressed
Incruse Ellipta	Umeclidinium Bromide	19	suppressed
Travoprost	Travoprost	19	suppressed
Vilazodone Hcl	Vilazodone Hcl	19	suppressed
Calcitriol	Calcitriol	18	suppressed
Carbamazepine Er	Carbamazepine	18	suppressed
Diazepam	Diazepam	18	suppressed
Dorzolamide-Timolol	Dorzolamide Hcl/Timolol Maleat	18	suppressed
Memantine Hcl Er	Memantine Hcl	18	suppressed
Metronidazole	Metronidazole	18	suppressed
Naltrexone Hcl	Naltrexone Hcl	18	suppressed
Nifedipine Er	Nifedipine	18	suppressed
Nitrofurantoin	Nitrofurantoin Macrocrystal	18	suppressed
Zosyn	Piperacillin-Tazo-Dextrose,iso	18	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	17	suppressed
Levemir	Insulin Detemir	17	suppressed
Megestrol Acetate	Megestrol Acetate	17	suppressed
Mesalamine Dr	Mesalamine	17	suppressed
Methenamine Hippurate	Methenamine Hippurate	17	suppressed
Mounjaro	Tirzepatide	17	suppressed
Mupirocin	Mupirocin	17	16
Nuedexta	Dextromethorphan Hbr/Quinidine	17	suppressed
Timolol Maleate	Timolol Maleate	17	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	17	suppressed
Trospium Chloride	Trospium Chloride	17	suppressed
Acyclovir	Acyclovir	16	suppressed
Breztri Aerosphere	Budesonide/Glycopyr/Formoterol	16	suppressed
Fluphenazine Hcl	Fluphenazine Hcl	16	suppressed
Novolog	Insulin Aspart	16	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	16	suppressed
Solifenacin Succinate	Solifenacin Succinate	16	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	15	suppressed
Anastrozole	Anastrozole	15	suppressed
Bupropion Hcl Sr	Bupropion Hcl	15	suppressed
Hydromorphone Hcl	Hydromorphone Hcl	15	suppressed
Oxycontin	Oxycodone Hcl	15	suppressed
Ozempic	Semaglutide	15	suppressed
Sps	Sodium Polystyrene Sulfon/Sorb	15	suppressed
Calcitonin-Salmon	Calcitonin,salmon,synthetic	14	suppressed
Gemtesa	Vibegron	14	suppressed
Minocycline Hcl	Minocycline Hcl	14	suppressed
Paliperidone Er	Paliperidone	14	suppressed
Paxlovid (Eua)	Nirmatrelvir/Ritonavir	14	14
Rivastigmine	Rivastigmine Tartrate	14	suppressed
Securesafe Pen Needle	Pen Needle, Diabetic, Safety	14	suppressed
Spiriva Handihaler	Tiotropium Bromide	14	suppressed
Sulfasalazine	Sulfasalazine	14	suppressed
Bromocriptine Mesylate	Bromocriptine Mesylate	13	suppressed
Divalproex Sodium Er	Divalproex Sodium	13	suppressed
Fenofibrate	Fenofibrate,micronized	13	suppressed
Flecainide Acetate	Flecainide Acetate	13	suppressed
Galantamine Hbr	Galantamine Hbr	13	suppressed
Gemfibrozil	Gemfibrozil	13	suppressed
Guanfacine Hcl	Guanfacine Hcl	13	suppressed
Haloperidol Decanoate	Haloperidol Decanoate	13	suppressed
Ingrezza	Valbenazine Tosylate	13	suppressed
Lacosamide	Lacosamide	13	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	13	suppressed
Ondansetron Odt	Ondansetron	13	suppressed
Primidone	Primidone	13	suppressed
Trimethoprim	Trimethoprim	13	suppressed
Cinacalcet Hcl	Cinacalcet Hcl	12	suppressed
Clomipramine Hcl	Clomipramine Hcl	12	suppressed
Dexamethasone	Dexamethasone	12	suppressed
Enulose	Lactulose	12	suppressed
Glyburide-Metformin Hcl	Glyburide/Metformin Hcl	12	suppressed
Invokana	Canagliflozin	12	suppressed
Labetalol Hcl	Labetalol Hcl	12	suppressed
Thioridazine Hcl	Thioridazine Hcl	12	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	12	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	12	suppressed
Budesonide	Budesonide	11	suppressed
Febuxostat	Febuxostat	11	suppressed
Fluocinonide	Fluocinonide	11	suppressed
Lokelma	Sodium Zirconium Cyclosilicate	11	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	11	suppressed
Loxapine	Loxapine Succinate	11	suppressed
Prednisolone Acetate	Prednisolone Acetate	11	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	11	suppressed
Ziprasidone Hcl	Ziprasidone Hcl	11	suppressed
Zirgan	Ganciclovir	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