Healthcare provider profile · identity verified

Peter Bosak, MD

Internal Medicine · AUBURN, WA · NPI 1811912892

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	581	163
Lisinopril	Lisinopril	510	133
Amlodipine Besylate	Amlodipine Besylate	437	115
Losartan Potassium	Losartan Potassium	342	94
Levothyroxine Sodium	Levothyroxine Sodium	298	78
Metformin Hcl	Metformin Hcl	294	84
Gabapentin	Gabapentin	280	73
Omeprazole	Omeprazole	252	62
Simvastatin	Simvastatin	248	68
Metoprolol Succinate	Metoprolol Succinate	221	67
Tamsulosin Hcl	Tamsulosin Hcl	217	60
Rosuvastatin Calcium	Rosuvastatin Calcium	173	55
Hydrochlorothiazide	Hydrochlorothiazide	159	47
Furosemide	Furosemide	148	50
Trazodone Hcl	Trazodone Hcl	147	41
Albuterol Sulfate Hfa	Albuterol Sulfate	135	39
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	133	33
Pantoprazole Sodium	Pantoprazole Sodium	130	41
Alendronate Sodium	Alendronate Sodium	119	37
Pravastatin Sodium	Pravastatin Sodium	118	32
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	107	11
Allopurinol	Allopurinol	106	31
Atenolol	Atenolol	102	28
Sertraline Hcl	Sertraline Hcl	93	26
Glimepiride	Glimepiride	90	29
Prednisone	Prednisone	90	69
Clopidogrel	Clopidogrel Bisulfate	89	21
Metoprolol Tartrate	Metoprolol Tartrate	86	30
Tramadol Hcl	Tramadol Hcl	85	23
Carvedilol	Carvedilol	82	23
Ezetimibe	Ezetimibe	82	24
Escitalopram Oxalate	Escitalopram Oxalate	81	22
Fluticasone Propionate	Fluticasone Propionate	81	32
Nifedipine Er	Nifedipine	81	25
Xarelto	Rivaroxaban	77	17
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	73	16
Eliquis	Apixaban	69	16
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	68	21
Montelukast Sodium	Montelukast Sodium	67	20
Pioglitazone Hcl	Pioglitazone Hcl	64	18
Zolpidem Tartrate	Zolpidem Tartrate	64	11
Lovastatin	Lovastatin	60	14
Oxycodone Hcl	Oxycodone Hcl	60	13
Potassium Chloride	Potassium Chloride	60	19
Duloxetine Hcl	Duloxetine Hcl	57	14
Citalopram Hbr	Citalopram Hydrobromide	55	14
Donepezil Hcl	Donepezil Hcl	54	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	54	15
Paroxetine Hcl	Paroxetine Hcl	53	17
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	50	19
Lorazepam	Lorazepam	49	13
Alprazolam	Alprazolam	48	14
Hydralazine Hcl	Hydralazine Hcl	48	18
Fenofibrate	Fenofibrate	46	13
Glipizide	Glipizide	46	12
Terazosin Hcl	Terazosin Hcl	44	12
Metformin Hcl Er	Metformin Hcl	43	15
Famotidine	Famotidine	42	11
Finasteride	Finasteride	42	11
Chlorthalidone	Chlorthalidone	40	suppressed
Ropinirole Hcl	Ropinirole Hcl	38	12
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	37	14
Januvia	Sitagliptin Phosphate	35	11
Hydroxyzine Hcl	Hydroxyzine Hcl	34	11
Tizanidine Hcl	Tizanidine Hcl	34	suppressed
Dutasteride	Dutasteride	33	suppressed
Methocarbamol	Methocarbamol	33	21
Jardiance	Empagliflozin	31	11
Baclofen	Baclofen	30	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	29	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	29	13
Doxazosin Mesylate	Doxazosin Mesylate	28	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	28	suppressed
Bupropion Xl	Bupropion Hcl	27	suppressed
Cephalexin	Cephalexin	27	21
Clonazepam	Clonazepam	27	suppressed
Memantine Hcl	Memantine Hcl	27	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	27	suppressed
Benazepril Hcl	Benazepril Hcl	25	suppressed
Spironolactone	Spironolactone	24	suppressed
Azithromycin	Azithromycin	23	21
Esomeprazole Magnesium	Esomeprazole Magnesium	23	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	23	suppressed
Nystatin	Nystatin	23	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	23	suppressed
Risperidone	Risperidone	23	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	23	suppressed
Buspirone Hcl	Buspirone Hcl	22	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	22	suppressed
Propranolol Hcl	Propranolol Hcl	22	suppressed
Clonidine Hcl	Clonidine Hcl	21	suppressed
Ibuprofen	Ibuprofen	21	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	21	suppressed
Hydrocortisone	Hydrocortisone	20	suppressed
Methadone Hcl	Methadone Hcl	20	suppressed
Valacyclovir	Valacyclovir Hcl	20	suppressed
Lansoprazole	Lansoprazole	19	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	19	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	18	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	18	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	17	suppressed
Ondansetron Odt	Ondansetron	17	suppressed
Glipizide Er	Glipizide	16	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	15	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	15	11
Pregabalin	Pregabalin	15	suppressed
Symbicort	Budesonide/Formoterol Fumarate	15	suppressed
Theophylline Er	Theophylline Anhydrous	15	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	14	suppressed
Cefuroxime	Cefuroxime Axetil	14	13
Diclofenac Sodium	Diclofenac Sodium	14	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	14	suppressed
Ketoconazole	Ketoconazole	14	suppressed
Mupirocin	Mupirocin	14	11
Oxycontin	Oxycodone Hcl	14	suppressed
Synthroid	Levothyroxine Sodium	14	suppressed
Acyclovir	Acyclovir	13	suppressed
Breo Ellipta	Fluticasone/Vilanterol	13	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	13	suppressed
Ipratropium Bromide	Ipratropium Bromide	13	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	13	suppressed
Warfarin Sodium	Warfarin Sodium	13	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	12	12
Colchicine	Colchicine	12	suppressed
Sildenafil Citrate	Sildenafil Citrate	12	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	12	suppressed
Alfuzosin Hcl Er	Alfuzosin Hcl	11	suppressed
Clindamycin Hcl	Clindamycin Hcl	11	11
Fenofibrate	Fenofibrate Nanocrystallized	11	suppressed
Lactulose	Lactulose	11	suppressed
Mirtazapine	Mirtazapine	11	suppressed
Topiramate	Topiramate	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

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