Healthcare provider profile · identity verified

Russell J Fredrickson, MD

Family Practice · NORTH FOND DU LAC, WI · NPI 1881685261

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	1357	356
Lisinopril	Lisinopril	555	144
Amlodipine Besylate	Amlodipine Besylate	535	131
Simvastatin	Simvastatin	429	106
Omeprazole	Omeprazole	423	129
Metoprolol Succinate	Metoprolol Succinate	411	112
Metformin Hcl	Metformin Hcl	338	81
Levothyroxine Sodium	Levothyroxine Sodium	333	83
Pantoprazole Sodium	Pantoprazole Sodium	305	77
Metoprolol Tartrate	Metoprolol Tartrate	295	73
Losartan Potassium	Losartan Potassium	291	72
Hydrochlorothiazide	Hydrochlorothiazide	277	77
Sertraline Hcl	Sertraline Hcl	261	57
Furosemide	Furosemide	246	73
Gabapentin	Gabapentin	246	77
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	227	61
Allopurinol	Allopurinol	190	48
Fluticasone Propionate	Fluticasone Propionate	188	78
Rosuvastatin Calcium	Rosuvastatin Calcium	183	56
Tamsulosin Hcl	Tamsulosin Hcl	177	43
Eliquis	Apixaban	174	43
Potassium Chloride	Potassium Chloride	170	46
Pravastatin Sodium	Pravastatin Sodium	162	52
Glipizide	Glipizide	156	33
Citalopram Hbr	Citalopram Hydrobromide	155	35
Metformin Hcl Er	Metformin Hcl	147	35
Alendronate Sodium	Alendronate Sodium	134	34
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	132	33
Warfarin Sodium	Warfarin Sodium	128	30
Celecoxib	Celecoxib	123	39
Trazodone Hcl	Trazodone Hcl	120	32
Pioglitazone Hcl	Pioglitazone Hcl	119	33
Spironolactone	Spironolactone	114	32
Venlafaxine Hcl Er	Venlafaxine Hcl	112	28
Bupropion Xl	Bupropion Hcl	108	20
Carvedilol	Carvedilol	107	30
Finasteride	Finasteride	105	23
Zolpidem Tartrate	Zolpidem Tartrate	105	27
Prednisone	Prednisone	98	57
Clonazepam	Clonazepam	92	22
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	89	23
Famotidine	Famotidine	86	21
Clopidogrel	Clopidogrel Bisulfate	82	22
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	81	15
Duloxetine Hcl	Duloxetine Hcl	80	14
Ozempic	Semaglutide	79	16
Tramadol Hcl	Tramadol Hcl	77	27
Alprazolam	Alprazolam	72	28
Oxybutynin Chloride	Oxybutynin Chloride	69	17
Escitalopram Oxalate	Escitalopram Oxalate	68	18
Albuterol Sulfate Hfa	Albuterol Sulfate	67	33
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	66	28
Tizanidine Hcl	Tizanidine Hcl	63	17
Fluoxetine Hcl	Fluoxetine Hcl	62	17
Glipizide Er	Glipizide	62	15
Oxycodone Hcl	Oxycodone Hcl	60	13
Montelukast Sodium	Montelukast Sodium	59	15
Ondansetron Odt	Ondansetron	59	12
Ezetimibe	Ezetimibe	58	15
Isosorbide Mononitrate Er	Isosorbide Mononitrate	57	suppressed
Meloxicam	Meloxicam	55	17
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	54	11
Atenolol	Atenolol	53	14
Synthroid	Levothyroxine Sodium	51	13
Lovastatin	Lovastatin	50	11
Loperamide	Loperamide Hcl	48	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	45	29
Estradiol	Estradiol	44	14
Jardiance	Empagliflozin	44	12
Hydralazine Hcl	Hydralazine Hcl	43	12
Azithromycin	Azithromycin	42	39
Diazepam	Diazepam	40	18
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	40	14
Glipizide-Metformin	Glipizide/Metformin Hcl	37	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	37	20
Amiodarone Hcl	Amiodarone Hcl	35	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	35	32
Pregabalin	Pregabalin	35	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	34	15
Irbesartan	Irbesartan	34	suppressed
Lorazepam	Lorazepam	34	14
Morphine Sulfate Er	Morphine Sulfate	34	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	33	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	33	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	33	11
Buspirone Hcl	Buspirone Hcl	32	13
Hydroxyzine Hcl	Hydroxyzine Hcl	32	suppressed
Symbicort	Budesonide/Formoterol Fumarate	32	suppressed
Potassium Citrate Er	Potassium Citrate	31	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	30	suppressed
Terazosin Hcl	Terazosin Hcl	30	suppressed
Torsemide	Torsemide	30	13
Cephalexin	Cephalexin	28	24
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	28	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	27	18
Primidone	Primidone	27	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	26	suppressed
Propranolol Hcl	Propranolol Hcl	26	suppressed
Lansoprazole	Lansoprazole	25	suppressed
Clobetasol Propionate	Clobetasol Propionate	24	13
Clonidine Hcl	Clonidine Hcl	24	suppressed
Fluconazole	Fluconazole	24	16
Ibuprofen	Ibuprofen	24	suppressed
Aripiprazole	Aripiprazole	22	suppressed
Chlorthalidone	Chlorthalidone	22	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	22	20
Klor-Con M20	Potassium Chloride	22	suppressed
Meclizine Hcl	Meclizine Hcl	22	suppressed
Ropinirole Hcl	Ropinirole Hcl	22	suppressed
Glimepiride	Glimepiride	21	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	21	11
Glatiramer Acetate	Glatiramer Acetate	20	suppressed
Valacyclovir	Valacyclovir Hcl	20	11
Midodrine Hcl	Midodrine Hcl	19	suppressed
Paroxetine Hcl	Paroxetine Hcl	19	suppressed
Acyclovir	Acyclovir	18	suppressed
Amoxicillin	Amoxicillin	18	16
Valsartan	Valsartan	18	suppressed
Benazepril Hcl	Benazepril Hcl	17	suppressed
Bisoprolol-Hydrochlorothiazide	Bisoprolol/Hydrochlorothiazide	17	suppressed
Dutasteride	Dutasteride	17	suppressed
Fenofibrate	Fenofibrate,micronized	17	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	17	17
Diclofenac Sodium	Diclofenac Sodium	16	11
Gemfibrozil	Gemfibrozil	16	suppressed
Metronidazole	Metronidazole	16	suppressed
Calcitonin-Salmon	Calcitonin,salmon,synthetic	15	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	15	suppressed
Doxepin Hcl	Doxepin Hcl	15	suppressed
Enalapril Maleate	Enalapril Maleate	15	suppressed
Januvia	Sitagliptin Phosphate	15	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	14	12
Bupropion Hcl Sr	Bupropion Hcl	14	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	14	suppressed
Lisdexamfetamine Dimesylate	Lisdexamfetamine Dimesylate	14	suppressed
Asmanex Hfa	Mometasone Furoate	13	suppressed
Bumetanide	Bumetanide	13	suppressed
Colchicine	Colchicine	13	11
Medroxyprogesterone Acetate	Medroxyprogesterone Acetate	13	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	13	suppressed
Naproxen	Naproxen	13	suppressed
Nystatin	Nystatin	13	13
Quetiapine Fumarate	Quetiapine Fumarate	13	suppressed
Risperidone	Risperidone	13	suppressed
Risperidone Odt	Risperidone	13	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	13	suppressed
Topiramate	Topiramate	13	suppressed
Fenofibrate	Fenofibrate	12	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	12	suppressed
Ondansetron Hcl	Ondansetron Hcl	12	suppressed
Prenatal Vitamin Plus Low Iron	Pnv,calcium 72/Iron/Folic Acid	12	suppressed
Betamethasone Dipropionate	Betamethasone Dipropionate	11	suppressed
Betamethasone Valerate	Betamethasone Valerate	11	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	11	suppressed
Levetiracetam	Levetiracetam	11	suppressed
Metolazone	Metolazone	11	suppressed
Mupirocin	Mupirocin	11	suppressed
Sucralfate	Sucralfate	11	suppressed
Xarelto	Rivaroxaban	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