Healthcare provider profile · identity verified

David Schachermeyer, DO

Family Practice · ALLENDALE, MI · NPI 1811488927

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	481	140
Lisinopril	Lisinopril	311	84
Losartan Potassium	Losartan Potassium	309	84
Rosuvastatin Calcium	Rosuvastatin Calcium	306	85
Levothyroxine Sodium	Levothyroxine Sodium	267	75
Amlodipine Besylate	Amlodipine Besylate	244	70
Omeprazole	Omeprazole	243	77
Gabapentin	Gabapentin	214	44
Metformin Hcl	Metformin Hcl	168	46
Metoprolol Succinate	Metoprolol Succinate	164	46
Albuterol Sulfate Hfa	Albuterol Sulfate	157	55
Tamsulosin Hcl	Tamsulosin Hcl	135	37
Furosemide	Furosemide	127	40
Carvedilol	Carvedilol	119	37
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	119	25
Pantoprazole Sodium	Pantoprazole Sodium	119	37
Duloxetine Hcl	Duloxetine Hcl	117	35
Hydrochlorothiazide	Hydrochlorothiazide	112	29
Meloxicam	Meloxicam	103	41
Sertraline Hcl	Sertraline Hcl	87	25
Trazodone Hcl	Trazodone Hcl	86	27
Metformin Hcl Er	Metformin Hcl	84	25
Ezetimibe	Ezetimibe	83	24
Fluticasone Propionate	Fluticasone Propionate	81	27
Mounjaro	Tirzepatide	81	18
Metoprolol Tartrate	Metoprolol Tartrate	80	20
Eliquis	Apixaban	78	20
Potassium Chloride	Potassium Chloride	72	25
Jardiance	Empagliflozin	70	21
Montelukast Sodium	Montelukast Sodium	69	19
Escitalopram Oxalate	Escitalopram Oxalate	63	16
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	63	18
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	63	12
Famotidine	Famotidine	61	16
Atenolol	Atenolol	59	16
Ropinirole Hcl	Ropinirole Hcl	58	suppressed
Spironolactone	Spironolactone	57	17
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	56	33
Buspirone Hcl	Buspirone Hcl	53	11
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	52	14
Oxybutynin Chloride Er	Oxybutynin Chloride	47	14
Allopurinol	Allopurinol	46	15
Simvastatin	Simvastatin	44	16
Tramadol Hcl	Tramadol Hcl	44	11
Trulicity	Dulaglutide	43	13
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	40	suppressed
Finasteride	Finasteride	40	11
Venlafaxine Hcl Er	Venlafaxine Hcl	40	suppressed
Celecoxib	Celecoxib	38	14
Warfarin Sodium	Warfarin Sodium	34	suppressed
Synthroid	Levothyroxine Sodium	33	suppressed
Alendronate Sodium	Alendronate Sodium	32	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	32	suppressed
Pravastatin Sodium	Pravastatin Sodium	32	11
Baclofen	Baclofen	29	suppressed
Fenofibrate	Fenofibrate	29	suppressed
Ventolin Hfa	Albuterol Sulfate	29	suppressed
Pregabalin	Pregabalin	28	11
Fenofibrate	Fenofibrate Nanocrystallized	27	11
Citalopram Hbr	Citalopram Hydrobromide	26	suppressed
Clopidogrel	Clopidogrel Bisulfate	26	suppressed
Incruse Ellipta	Umeclidinium Bromide	26	suppressed
Nystatin	Nystatin	26	suppressed
Clonazepam	Clonazepam	25	suppressed
Glipizide	Glipizide	25	suppressed
Xarelto	Rivaroxaban	25	suppressed
Alprazolam	Alprazolam	24	suppressed
Farxiga	Dapagliflozin Propanediol	24	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	24	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	24	suppressed
Mirtazapine	Mirtazapine	24	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	23	suppressed
Jantoven	Warfarin Sodium	23	suppressed
Repatha Sureclick	Evolocumab	23	suppressed
Tresiba Flextouch U-100	Insulin Degludec	23	suppressed
Cephalexin	Cephalexin	22	17
Fluoxetine Hcl	Fluoxetine Hcl	22	suppressed
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	22	suppressed
Stiolto Respimat	Tiotropium Br/Olodaterol Hcl	21	suppressed
Torsemide	Torsemide	21	suppressed
Bupropion Hcl Sr	Bupropion Hcl	20	suppressed
Donepezil Hcl	Donepezil Hcl	20	suppressed
Methocarbamol	Methocarbamol	20	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	20	17
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	20	suppressed
Glipizide Er	Glipizide	19	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	19	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	19	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	17	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	17	16
Doxazosin Mesylate	Doxazosin Mesylate	17	suppressed
Morphine Sulfate Er	Morphine Sulfate	17	suppressed
Verapamil Er	Verapamil Hcl	17	suppressed
Acyclovir	Acyclovir	16	suppressed
Bevespi Aerosphere	Glycopyrrolate/Formoterol Fum	16	suppressed
Breo Ellipta	Fluticasone/Vilanterol	16	suppressed
Estradiol	Estradiol	16	suppressed
Nitroglycerin	Nitroglycerin	16	11
Ondansetron Odt	Ondansetron	16	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	15	suppressed
Irbesartan	Irbesartan	15	suppressed
Lovastatin	Lovastatin	15	suppressed
Aripiprazole	Aripiprazole	14	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	14	suppressed
Lorazepam	Lorazepam	14	suppressed
Prednisone	Prednisone	14	suppressed
Azelastine Hcl	Azelastine Hcl	13	suppressed
Mupirocin	Mupirocin	13	suppressed
Ozempic	Semaglutide	13	suppressed
Repatha Pushtronex	Evolocumab	13	suppressed
Spiriva Respimat	Tiotropium Bromide	13	suppressed
Valacyclovir	Valacyclovir Hcl	13	suppressed
Bupropion Xl	Bupropion Hcl	12	suppressed
Diclofenac Sodium	Diclofenac Sodium	12	suppressed
Enalapril Maleate	Enalapril Maleate	12	suppressed
Hydralazine Hcl	Hydralazine Hcl	12	suppressed
Loperamide	Loperamide Hcl	12	suppressed
Ondansetron Hcl	Ondansetron Hcl	12	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	12	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	12	suppressed
Risperidone	Risperidone	12	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	11	11
Entresto	Sacubitril/Valsartan	11	suppressed
Fluconazole	Fluconazole	11	suppressed
Humalog Kwikpen U-100	Insulin Lispro	11	suppressed
Ibuprofen	Ibuprofen	11	suppressed
Ketoconazole	Ketoconazole	11	suppressed
Meclizine Hcl	Meclizine Hcl	11	suppressed
Myrbetriq	Mirabegron	11	suppressed
Novolin 70-30 Flexpen	Insulin Nph Hum/Reg Insulin Hm	11	suppressed
Nyamyc	Nystatin	11	suppressed
Primidone	Primidone	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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