Healthcare provider profile · identity verified

Peter Ritsema, MD

Family Practice · JENISON, MI · NPI 1235185067

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	859	250
Rosuvastatin Calcium	Rosuvastatin Calcium	439	123
Lisinopril	Lisinopril	435	125
Levothyroxine Sodium	Levothyroxine Sodium	433	117
Amlodipine Besylate	Amlodipine Besylate	349	99
Omeprazole	Omeprazole	294	88
Metformin Hcl	Metformin Hcl	272	74
Metoprolol Succinate	Metoprolol Succinate	231	72
Trazodone Hcl	Trazodone Hcl	197	65
Losartan Potassium	Losartan Potassium	191	59
Gabapentin	Gabapentin	186	59
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	161	28
Tamsulosin Hcl	Tamsulosin Hcl	154	42
Fluoxetine Hcl	Fluoxetine Hcl	140	41
Hydrochlorothiazide	Hydrochlorothiazide	139	40
Eliquis	Apixaban	127	37
Alprazolam	Alprazolam	116	32
Metformin Hcl Er	Metformin Hcl	102	29
Pantoprazole Sodium	Pantoprazole Sodium	101	33
Glimepiride	Glimepiride	98	29
Tramadol Hcl	Tramadol Hcl	97	26
Alendronate Sodium	Alendronate Sodium	94	30
Bupropion Xl	Bupropion Hcl	93	27
Furosemide	Furosemide	93	32
Meloxicam	Meloxicam	89	31
Lovastatin	Lovastatin	88	23
Finasteride	Finasteride	85	24
Allopurinol	Allopurinol	84	25
Chlorthalidone	Chlorthalidone	84	23
Citalopram Hbr	Citalopram Hydrobromide	80	21
Propranolol Hcl Er	Propranolol Hcl	80	21
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	78	15
Methadone Hcl	Methadone Hcl	77	suppressed
Duloxetine Hcl	Duloxetine Hcl	72	21
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	71	21
Metoprolol Tartrate	Metoprolol Tartrate	71	23
Fluticasone Propionate	Fluticasone Propionate	67	22
Lorazepam	Lorazepam	66	12
Clopidogrel	Clopidogrel Bisulfate	62	20
Valacyclovir	Valacyclovir Hcl	61	20
Xarelto	Rivaroxaban	61	12
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	60	17
Zolpidem Tartrate	Zolpidem Tartrate	60	12
Carvedilol	Carvedilol	57	16
Albuterol Sulfate Hfa	Albuterol Sulfate	56	31
Pravastatin Sodium	Pravastatin Sodium	54	25
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	53	suppressed
Mounjaro	Tirzepatide	53	suppressed
Diazepam	Diazepam	52	suppressed
Prednisone	Prednisone	51	28
Ramipril	Ramipril	51	17
Atenolol	Atenolol	50	13
Cephalexin	Cephalexin	50	36
Clonazepam	Clonazepam	50	suppressed
Potassium Chloride	Potassium Chloride	50	19
Sertraline Hcl	Sertraline Hcl	48	15
Baclofen	Baclofen	45	14
Trulicity	Dulaglutide	45	suppressed
Famotidine	Famotidine	41	16
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	40	14
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	40	suppressed
Simvastatin	Simvastatin	39	12
Montelukast Sodium	Montelukast Sodium	38	13
Warfarin Sodium	Warfarin Sodium	38	suppressed
Spironolactone	Spironolactone	35	12
Ezetimibe	Ezetimibe	34	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	32	11
Ozempic	Semaglutide	32	suppressed
Solifenacin Succinate	Solifenacin Succinate	31	suppressed
Celecoxib	Celecoxib	30	12
Amitriptyline Hcl	Amitriptyline Hcl	29	suppressed
Bupropion Hcl Sr	Bupropion Hcl	29	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	29	11
Venlafaxine Hcl Er	Venlafaxine Hcl	29	suppressed
Azelastine Hcl	Azelastine Hcl	27	suppressed
Buspirone Hcl	Buspirone Hcl	27	suppressed
Nystatin	Nystatin	27	14
Methylphenidate Er	Methylphenidate Hcl	25	suppressed
Oxycontin	Oxycodone Hcl	25	suppressed
Propranolol Hcl	Propranolol Hcl	25	suppressed
Amoxicillin	Amoxicillin	24	16
Diclofenac Sodium	Diclofenac Sodium	24	11
Methylphenidate Hcl	Methylphenidate Hcl	23	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	23	suppressed
Qvar Redihaler	Beclomethasone Dipropionate	23	suppressed
Estradiol	Estradiol	22	12
Januvia	Sitagliptin Phosphate	21	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	21	12
Donepezil Hcl	Donepezil Hcl	20	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	20	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	20	suppressed
Pregabalin	Pregabalin	20	suppressed
Fenofibrate	Fenofibrate	19	suppressed
Methocarbamol	Methocarbamol	19	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	19	13
Oxybutynin Chloride Er	Oxybutynin Chloride	19	suppressed
Oxycodone Hcl	Oxycodone Hcl	18	suppressed
Azithromycin	Azithromycin	17	14
Lansoprazole	Lansoprazole	17	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	17	suppressed
Nabumetone	Nabumetone	17	suppressed
Ipratropium Bromide	Ipratropium Bromide	16	suppressed
Jardiance	Empagliflozin	16	suppressed
Lamotrigine	Lamotrigine	16	suppressed
Ropinirole Hcl	Ropinirole Hcl	16	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	16	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	15	suppressed
Paroxetine Hcl	Paroxetine Hcl	15	suppressed
Temazepam	Temazepam	15	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	14	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	14	12
Estradiol (Once Weekly)	Estradiol	13	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	13	suppressed
Lumigan	Bimatoprost	13	suppressed
Risedronate Sodium	Risedronate Sodium	13	suppressed
Terbinafine Hcl	Terbinafine Hcl	13	suppressed
Cholestyramine	Cholestyramine (With Sugar)	12	suppressed
Cyanocobalamin Injection	Cyanocobalamin (Vitamin B-12)	12	suppressed
Ibandronate Sodium	Ibandronate Sodium	12	suppressed
Ibuprofen	Ibuprofen	12	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	12	suppressed
Ultra-Fine Nano Pen Needle	Pen Needle, Diabetic	12	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	11	suppressed
Hydralazine Hcl	Hydralazine Hcl	11	suppressed
Hydrocortisone	Hydrocortisone	11	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	11	suppressed
Levetiracetam	Levetiracetam	11	suppressed
Morphine Sulfate	Morphine Sulfate	11	suppressed
Nadolol	Nadolol	11	suppressed
Symbicort	Budesonide/Formoterol Fumarate	11	suppressed
Valsartan	Valsartan	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