Healthcare provider profile · identity verified

Jon D Kammerer, MD

Family Practice · CRESCO, IA · NPI 1427169192

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	368	82
Furosemide	Furosemide	339	68
Warfarin Sodium	Warfarin Sodium	322	27
Levothyroxine Sodium	Levothyroxine Sodium	269	47
Lisinopril	Lisinopril	258	63
Gabapentin	Gabapentin	223	34
Omeprazole	Omeprazole	219	45
Metoprolol Succinate	Metoprolol Succinate	218	51
Metformin Hcl	Metformin Hcl	198	41
Eliquis	Apixaban	183	25
Potassium Chloride	Potassium Chloride	175	35
Metoprolol Tartrate	Metoprolol Tartrate	152	30
Losartan Potassium	Losartan Potassium	142	33
Amlodipine Besylate	Amlodipine Besylate	135	30
Simvastatin	Simvastatin	135	29
Famotidine	Famotidine	130	20
Pantoprazole Sodium	Pantoprazole Sodium	123	24
Tramadol Hcl	Tramadol Hcl	121	23
Tamsulosin Hcl	Tamsulosin Hcl	115	26
Fentanyl	Fentanyl	111	suppressed
Trazodone Hcl	Trazodone Hcl	106	21
Alprazolam	Alprazolam	104	14
Finasteride	Finasteride	101	19
Hydrochlorothiazide	Hydrochlorothiazide	99	25
Spironolactone	Spironolactone	97	21
Allopurinol	Allopurinol	87	18
Prednisone	Prednisone	84	27
Sertraline Hcl	Sertraline Hcl	84	16
Clopidogrel	Clopidogrel Bisulfate	83	18
Fluoxetine Hcl	Fluoxetine Hcl	78	12
Fluticasone Propionate	Fluticasone Propionate	71	14
Isosorbide Mononitrate Er	Isosorbide Mononitrate	68	suppressed
Glimepiride	Glimepiride	67	17
Baclofen	Baclofen	65	suppressed
Rosuvastatin Calcium	Rosuvastatin Calcium	64	15
Carvedilol	Carvedilol	63	14
Escitalopram Oxalate	Escitalopram Oxalate	63	12
Mirtazapine	Mirtazapine	63	suppressed
Oxycodone Hcl	Oxycodone Hcl	62	13
Quetiapine Fumarate	Quetiapine Fumarate	62	11
Lorazepam	Lorazepam	61	11
Albuterol Sulfate Hfa	Albuterol Sulfate	57	23
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	56	18
Zolpidem Tartrate	Zolpidem Tartrate	56	15
Glipizide	Glipizide	54	12
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	51	suppressed
Duloxetine Hcl	Duloxetine Hcl	51	suppressed
Xarelto	Rivaroxaban	51	15
Citalopram Hbr	Citalopram Hydrobromide	45	suppressed
Lamotrigine	Lamotrigine	44	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	44	12
Trimethoprim	Trimethoprim	44	suppressed
Promethazine Hcl	Promethazine Hcl	41	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	41	21
Diclofenac Sodium	Diclofenac Sodium	39	suppressed
Latanoprost	Latanoprost	39	suppressed
Myrbetriq	Mirabegron	39	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	39	suppressed
Cephalexin	Cephalexin	35	27
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	35	suppressed
Clonazepam	Clonazepam	34	suppressed
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	34	suppressed
Divalproex Sodium	Divalproex Sodium	33	suppressed
Metolazone	Metolazone	33	suppressed
Atenolol	Atenolol	31	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	31	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	31	suppressed
Ozempic	Semaglutide	31	suppressed
Pregabalin	Pregabalin	31	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	30	suppressed
Pravastatin Sodium	Pravastatin Sodium	30	suppressed
Meclizine Hcl	Meclizine Hcl	29	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	29	16
Topiramate	Topiramate	29	suppressed
Nystatin	Nystatin	28	16
Verapamil Er	Verapamil Hcl	28	suppressed
Buspirone Hcl	Buspirone Hcl	27	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	27	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	27	suppressed
Jardiance	Empagliflozin	27	suppressed
Fluconazole	Fluconazole	26	14
Phenytoin Sodium Extended	Phenytoin Sodium Extended	26	suppressed
Torsemide	Torsemide	26	suppressed
Budesonide	Budesonide	25	suppressed
Risperidone	Risperidone	25	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	25	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	24	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	24	suppressed
Incruse Ellipta	Umeclidinium Bromide	24	suppressed
Nyamyc	Nystatin	24	suppressed
Amiodarone Hcl	Amiodarone Hcl	23	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	23	18
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	23	suppressed
Memantine Hcl	Memantine Hcl	23	suppressed
Paroxetine Hcl	Paroxetine Hcl	23	suppressed
Thiothixene	Thiothixene	23	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	22	suppressed
Benazepril Hcl	Benazepril Hcl	22	suppressed
Levetiracetam	Levetiracetam	22	suppressed
Premarin	Estrogens, Conjugated	22	suppressed
Bupropion Xl	Bupropion Hcl	21	suppressed
Celecoxib	Celecoxib	21	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	21	15
Synthroid	Levothyroxine Sodium	21	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	20	19
Doxazosin Mesylate	Doxazosin Mesylate	20	suppressed
Glipizide Er	Glipizide	20	suppressed
Donepezil Hcl	Donepezil Hcl	19	suppressed
Nitroglycerin	Nitroglycerin	19	16
Carbamazepine Er	Carbamazepine	17	suppressed
Ezetimibe	Ezetimibe	17	suppressed
Hydrocortisone	Hydrocortisone	17	suppressed
Nabumetone	Nabumetone	17	suppressed
Alendronate Sodium	Alendronate Sodium	16	suppressed
Dorzolamide-Timolol	Dorzolamide Hcl/Timolol Maleat	16	suppressed
Januvia	Sitagliptin Phosphate	16	suppressed
Lovastatin	Lovastatin	16	suppressed
Propranolol Hcl Er	Propranolol Hcl	16	suppressed
Terazosin Hcl	Terazosin Hcl	16	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	16	suppressed
Aripiprazole	Aripiprazole	15	suppressed
Bumetanide	Bumetanide	15	suppressed
Entresto	Sacubitril/Valsartan	15	suppressed
Hydromorphone Hcl	Hydromorphone Hcl	15	suppressed
Loperamide	Loperamide Hcl	15	suppressed
Novolog Flexpen	Insulin Aspart	15	suppressed
Amoxicillin	Amoxicillin	14	suppressed
Ipratropium Bromide	Ipratropium Bromide	14	suppressed
Ondansetron Odt	Ondansetron	14	suppressed
Propranolol Hcl	Propranolol Hcl	14	suppressed
Breo Ellipta	Fluticasone/Vilanterol	13	suppressed
Lactulose	Lactulose	13	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	13	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	13	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	13	suppressed
Ondansetron Hcl	Ondansetron Hcl	13	suppressed
Oxcarbazepine	Oxcarbazepine	13	suppressed
Rexulti	Brexpiprazole	13	suppressed
Betamethasone Dipropionate	Betamethasone Dipropionate	12	suppressed
Bupropion Hcl Sr	Bupropion Hcl	12	suppressed
Desipramine Hcl	Desipramine Hcl	12	suppressed
Diazepam	Diazepam	12	suppressed
Levofloxacin	Levofloxacin	12	11
Metformin Hcl Er	Metformin Hcl	12	suppressed
Mupirocin	Mupirocin	12	suppressed
Nifedipine Er	Nifedipine	12	suppressed
Solifenacin Succinate	Solifenacin Succinate	12	suppressed
Abilify Maintena	Aripiprazole	11	suppressed
Acyclovir	Acyclovir	11	suppressed
Azithromycin	Azithromycin	11	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	11	suppressed
Enalapril Maleate	Enalapril Maleate	11	suppressed
Farxiga	Dapagliflozin Propanediol	11	suppressed
Travoprost	Travoprost	11	suppressed
Valacyclovir	Valacyclovir 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