Healthcare provider profile · identity verified

Daniel R Retzer, MD

Family Practice · DAVIS JUNCTION, IL · NPI 1063455079

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
Losartan Potassium	Losartan Potassium	617	166
Metoprolol Succinate	Metoprolol Succinate	527	139
Lisinopril	Lisinopril	480	127
Atorvastatin Calcium	Atorvastatin Calcium	470	126
Omeprazole	Omeprazole	399	122
Rosuvastatin Calcium	Rosuvastatin Calcium	382	100
Simvastatin	Simvastatin	370	90
Levothyroxine Sodium	Levothyroxine Sodium	367	85
Amlodipine Besylate	Amlodipine Besylate	315	84
Metformin Hcl	Metformin Hcl	286	79
Metoprolol Tartrate	Metoprolol Tartrate	231	59
Hydrochlorothiazide	Hydrochlorothiazide	209	55
Tamsulosin Hcl	Tamsulosin Hcl	201	61
Gabapentin	Gabapentin	193	59
Allopurinol	Allopurinol	184	46
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	183	52
Doxazosin Mesylate	Doxazosin Mesylate	160	42
Furosemide	Furosemide	147	56
Albuterol Sulfate Hfa	Albuterol Sulfate	144	52
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	140	36
Eliquis	Apixaban	139	28
Pravastatin Sodium	Pravastatin Sodium	126	34
Fluoxetine Hcl	Fluoxetine Hcl	119	28
Tramadol Hcl	Tramadol Hcl	117	48
Glipizide	Glipizide	111	33
Potassium Chloride	Potassium Chloride	111	31
Trazodone Hcl	Trazodone Hcl	107	27
Atenolol	Atenolol	106	29
Carvedilol	Carvedilol	99	29
Pantoprazole Sodium	Pantoprazole Sodium	95	27
Prednisone	Prednisone	95	80
Terazosin Hcl	Terazosin Hcl	92	26
Irbesartan	Irbesartan	89	20
Finasteride	Finasteride	77	21
Alprazolam	Alprazolam	74	35
Paroxetine Hcl	Paroxetine Hcl	72	21
Triamcinolone Acetonide	Triamcinolone Acetonide	69	39
Enalapril Maleate	Enalapril Maleate	68	17
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	67	15
Lovastatin	Lovastatin	66	17
Sertraline Hcl	Sertraline Hcl	66	17
Xarelto	Rivaroxaban	64	15
Clopidogrel	Clopidogrel Bisulfate	62	18
Glipizide Er	Glipizide	62	14
Spironolactone	Spironolactone	58	16
Clonidine Hcl	Clonidine Hcl	55	17
Ozempic	Semaglutide	55	12
Warfarin Sodium	Warfarin Sodium	54	19
Metformin Hcl Er	Metformin Hcl	52	17
Methylphenidate Hcl	Methylphenidate Hcl	51	11
Duloxetine Hcl	Duloxetine Hcl	50	13
Fluticasone Propionate	Fluticasone Propionate	50	18
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	48	40
Azithromycin	Azithromycin	46	37
Meloxicam	Meloxicam	46	27
Methylprednisolone	Methylprednisolone	46	43
Doxycycline Hyclate	Doxycycline Hyclate	45	31
Cephalexin	Cephalexin	44	37
Ipratropium Bromide	Ipratropium Bromide	44	13
Jardiance	Empagliflozin	43	12
Ezetimibe	Ezetimibe	42	13
Clonazepam	Clonazepam	41	14
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	40	29
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	39	16
Tizanidine Hcl	Tizanidine Hcl	39	23
Alendronate Sodium	Alendronate Sodium	38	13
Amitriptyline Hcl	Amitriptyline Hcl	38	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	38	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	34	23
Diltiazem Hcl	Diltiazem Hcl	33	suppressed
Citalopram Hbr	Citalopram Hydrobromide	31	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	31	13
Famotidine	Famotidine	31	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	30	suppressed
Klor-Con M20	Potassium Chloride	28	suppressed
Lorazepam	Lorazepam	28	12
Ventolin Hfa	Albuterol Sulfate	28	suppressed
Ondansetron Hcl	Ondansetron Hcl	27	15
Ramipril	Ramipril	27	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	26	suppressed
Montelukast Sodium	Montelukast Sodium	26	suppressed
Bupropion Xl	Bupropion Hcl	25	suppressed
Valacyclovir	Valacyclovir Hcl	25	11
Hydralazine Hcl	Hydralazine Hcl	24	11
Chlorthalidone	Chlorthalidone	23	suppressed
Celecoxib	Celecoxib	21	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	21	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	20	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	20	suppressed
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	20	suppressed
Ondansetron Odt	Ondansetron	18	suppressed
Verapamil Sr	Verapamil Hcl	18	suppressed
Fluorouracil	Fluorouracil	17	17
Gemfibrozil	Gemfibrozil	17	suppressed
Metronidazole	Metronidazole	17	13
Mounjaro	Tirzepatide	17	suppressed
Zolpidem Tartrate Er	Zolpidem Tartrate	17	suppressed
Bupropion Hcl Sr	Bupropion Hcl	16	suppressed
Digoxin	Digoxin	16	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	16	suppressed
Fenofibrate	Fenofibrate	16	suppressed
Synthroid	Levothyroxine Sodium	16	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	16	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	15	suppressed
Amoxicillin	Amoxicillin	15	15
Colchicine	Colchicine	15	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	15	suppressed
Estradiol	Estradiol	15	suppressed
Breo Ellipta	Fluticasone/Vilanterol	14	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	14	suppressed
Sildenafil Citrate	Sildenafil Citrate	14	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	14	suppressed
Benazepril Hcl	Benazepril Hcl	13	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	13	suppressed
Primidone	Primidone	13	suppressed
Ibuprofen	Ibuprofen	12	suppressed
Ketoconazole	Ketoconazole	12	suppressed
Mirtazapine	Mirtazapine	12	suppressed
Pyridostigmine Bromide	Pyridostigmine Bromide	12	suppressed
Sucralfate	Sucralfate	12	suppressed
Atenolol-Chlorthalidone	Atenolol/Chlorthalidone	11	suppressed
Dulera	Mometasone/Formoterol	11	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	11	suppressed
Levemir Flexpen	Insulin Detemir	11	suppressed
Novolog Mix 70-30 Flexpen	Insulin Aspart Prot/Insuln Asp	11	suppressed
Nystatin	Nystatin	11	suppressed
Pregabalin	Pregabalin	11	suppressed
Risperidone	Risperidone	11	suppressed
Temazepam	Temazepam	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