Healthcare provider profile · identity verified

James G Schaffhauser, MD

Family Practice · BATTLE CREEK, MI · NPI 1295257558

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
Amlodipine Besylate	Amlodipine Besylate	682	216
Atorvastatin Calcium	Atorvastatin Calcium	676	211
Levothyroxine Sodium	Levothyroxine Sodium	494	150
Losartan Potassium	Losartan Potassium	442	148
Metoprolol Succinate	Metoprolol Succinate	382	127
Gabapentin	Gabapentin	375	83
Omeprazole	Omeprazole	348	116
Lisinopril	Lisinopril	334	102
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	275	55
Rosuvastatin Calcium	Rosuvastatin Calcium	248	84
Metformin Hcl	Metformin Hcl	243	72
Pantoprazole Sodium	Pantoprazole Sodium	239	82
Tamsulosin Hcl	Tamsulosin Hcl	237	87
Jardiance	Empagliflozin	229	61
Trazodone Hcl	Trazodone Hcl	227	74
Simvastatin	Simvastatin	201	64
Hydrochlorothiazide	Hydrochlorothiazide	195	65
Albuterol Sulfate Hfa	Albuterol Sulfate	190	94
Metoprolol Tartrate	Metoprolol Tartrate	182	52
Pravastatin Sodium	Pravastatin Sodium	170	49
Furosemide	Furosemide	164	55
Fluticasone Propionate	Fluticasone Propionate	153	72
Potassium Chloride	Potassium Chloride	144	51
Duloxetine Hcl	Duloxetine Hcl	142	43
Alprazolam	Alprazolam	138	40
Metformin Hcl Er	Metformin Hcl	135	45
Montelukast Sodium	Montelukast Sodium	131	43
Clopidogrel	Clopidogrel Bisulfate	123	43
Alendronate Sodium	Alendronate Sodium	116	42
Escitalopram Oxalate	Escitalopram Oxalate	115	40
Allopurinol	Allopurinol	112	33
Carvedilol	Carvedilol	110	36
Trulicity	Dulaglutide	107	17
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	105	32
Pregabalin	Pregabalin	97	23
Chlorthalidone	Chlorthalidone	96	33
Eliquis	Apixaban	92	26
Famotidine	Famotidine	90	35
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	89	22
Ozempic	Semaglutide	89	30
Solifenacin Succinate	Solifenacin Succinate	88	34
Tramadol Hcl	Tramadol Hcl	88	21
Hydralazine Hcl	Hydralazine Hcl	86	30
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	83	20
Sertraline Hcl	Sertraline Hcl	77	34
Tizanidine Hcl	Tizanidine Hcl	70	18
Finasteride	Finasteride	69	25
Azelastine Hcl	Azelastine Hcl	67	32
Citalopram Hbr	Citalopram Hydrobromide	67	17
Isosorbide Mononitrate Er	Isosorbide Mononitrate	62	20
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	59	29
Diclofenac Sodium	Diclofenac Sodium	59	26
Januvia	Sitagliptin Phosphate	59	14
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	59	suppressed
Spironolactone	Spironolactone	59	17
Glimepiride	Glimepiride	57	15
Ropinirole Hcl	Ropinirole Hcl	55	17
Donepezil Hcl	Donepezil Hcl	52	13
Ezetimibe	Ezetimibe	52	19
Atenolol	Atenolol	50	16
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	49	12
Xarelto	Rivaroxaban	49	12
Glipizide Er	Glipizide	48	17
Buspirone Hcl	Buspirone Hcl	47	13
Stiolto Respimat	Tiotropium Br/Olodaterol Hcl	47	15
Esomeprazole Magnesium	Esomeprazole Magnesium	46	16
Amitriptyline Hcl	Amitriptyline Hcl	44	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	44	14
Lansoprazole	Lansoprazole	41	suppressed
Bupropion Xl	Bupropion Hcl	40	13
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	40	suppressed
Warfarin Sodium	Warfarin Sodium	39	11
Zolpidem Tartrate	Zolpidem Tartrate	39	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	38	13
Hydroxyzine Hcl	Hydroxyzine Hcl	37	11
Baclofen	Baclofen	36	suppressed
Celecoxib	Celecoxib	35	12
Fenofibrate	Fenofibrate Nanocrystallized	35	suppressed
Estradiol	Estradiol	34	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	34	11
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	32	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	31	suppressed
Fenofibrate	Fenofibrate	30	suppressed
Ibuprofen	Ibuprofen	30	17
Ondansetron Odt	Ondansetron	30	11
Quetiapine Fumarate	Quetiapine Fumarate	30	suppressed
Ventolin Hfa	Albuterol Sulfate	30	16
Symbicort	Budesonide/Formoterol Fumarate	29	suppressed
Irbesartan	Irbesartan	27	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	27	12
Synthroid	Levothyroxine Sodium	27	suppressed
Clobetasol Propionate	Clobetasol Propionate	26	suppressed
Myrbetriq	Mirabegron	26	11
Nitroglycerin	Nitroglycerin	26	19
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	25	suppressed
Clonidine Hcl	Clonidine Hcl	25	suppressed
Desvenlafaxine Succinate Er	Desvenlafaxine Succinate	25	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	25	suppressed
Propranolol Hcl	Propranolol Hcl	25	suppressed
Bumetanide	Bumetanide	24	12
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	24	suppressed
Farxiga	Dapagliflozin Propanediol	24	suppressed
Glipizide	Glipizide	24	suppressed
Linzess	Linaclotide	24	suppressed
Nifedipine Er	Nifedipine	24	suppressed
Topiramate	Topiramate	24	suppressed
Valacyclovir	Valacyclovir Hcl	24	13
Alfuzosin Hcl Er	Alfuzosin Hcl	23	suppressed
Dutasteride	Dutasteride	23	suppressed
Lorazepam	Lorazepam	23	suppressed
Breo Ellipta	Fluticasone/Vilanterol	22	suppressed
Nystop	Nystatin	22	suppressed
Prednisone	Prednisone	22	12
Terazosin Hcl	Terazosin Hcl	22	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	21	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	21	suppressed
Valsartan	Valsartan	21	suppressed
Doxepin Hcl	Doxepin Hcl	20	suppressed
Enalapril Maleate	Enalapril Maleate	20	suppressed
Lovastatin	Lovastatin	20	suppressed
Spiriva Respimat	Tiotropium Bromide	20	suppressed
Clonazepam	Clonazepam	19	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	19	suppressed
Mirtazapine	Mirtazapine	18	suppressed
Tresiba Flextouch U-100	Insulin Degludec	18	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	18	14
Benazepril Hcl	Benazepril Hcl	17	suppressed
Clotrimazole	Clotrimazole	16	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	16	suppressed
Ibandronate Sodium	Ibandronate Sodium	16	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	16	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	16	suppressed
Acyclovir	Acyclovir	15	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	15	14
Digoxin	Digoxin	15	suppressed
Epinephrine	Epinephrine	15	suppressed
Incruse Ellipta	Umeclidinium Bromide	15	suppressed
Mounjaro	Tirzepatide	15	suppressed
Nystatin	Nystatin	15	13
Olmesartan-Hydrochlorothiazide	Olmesartan/Hydrochlorothiazide	15	suppressed
Sildenafil Citrate	Sildenafil Citrate	15	suppressed
Telmisartan	Telmisartan	15	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	14	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	14	suppressed
Raloxifene Hcl	Raloxifene Hcl	14	suppressed
Ultra-Fine Mini Pen Needle	Pen Needle, Diabetic	14	suppressed
Calcitriol	Calcitriol	13	suppressed
Clonidine	Clonidine	13	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	13	suppressed
Meloxicam	Meloxicam	13	suppressed
Methadone Hcl	Methadone Hcl	13	suppressed
Ondansetron Hcl	Ondansetron Hcl	13	11
Torsemide	Torsemide	13	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	13	suppressed
Verapamil Sr	Verapamil Hcl	13	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	13	suppressed
Pramipexole Er	Pramipexole Di-Hcl	12	suppressed
Varenicline Tartrate	Varenicline Tartrate	12	suppressed
Bisoprolol-Hydrochlorothiazide	Bisoprolol/Hydrochlorothiazide	11	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	11	suppressed
Gemfibrozil	Gemfibrozil	11	suppressed
Paroxetine Hcl	Paroxetine 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