Healthcare provider profile · identity verified

Christopher John Gunnell, M.D.

Family Practice · SAINT IGNACE, MI · NPI 1932142262

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
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	766	78
Levothyroxine Sodium	Levothyroxine Sodium	528	131
Atorvastatin Calcium	Atorvastatin Calcium	486	127
Gabapentin	Gabapentin	471	58
Lisinopril	Lisinopril	372	97
Omeprazole	Omeprazole	334	85
Albuterol Sulfate Hfa	Albuterol Sulfate	314	82
Amlodipine Besylate	Amlodipine Besylate	304	84
Metformin Hcl	Metformin Hcl	288	78
Simvastatin	Simvastatin	245	67
Losartan Potassium	Losartan Potassium	233	61
Pantoprazole Sodium	Pantoprazole Sodium	220	62
Ibuprofen	Ibuprofen	204	63
Alprazolam	Alprazolam	201	35
Tramadol Hcl	Tramadol Hcl	201	31
Metoprolol Succinate	Metoprolol Succinate	187	52
Chlorthalidone	Chlorthalidone	180	50
Sertraline Hcl	Sertraline Hcl	171	44
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	164	36
Hydrochlorothiazide	Hydrochlorothiazide	160	40
Zolpidem Tartrate	Zolpidem Tartrate	160	21
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	158	34
Oxycodone Hcl	Oxycodone Hcl	152	12
Trazodone Hcl	Trazodone Hcl	152	36
Tamsulosin Hcl	Tamsulosin Hcl	149	35
Metoprolol Tartrate	Metoprolol Tartrate	144	39
Furosemide	Furosemide	130	45
Rosuvastatin Calcium	Rosuvastatin Calcium	123	35
Fluticasone Propionate	Fluticasone Propionate	122	48
Pregabalin	Pregabalin	114	14
Metformin Hcl Er	Metformin Hcl	108	28
Diazepam	Diazepam	107	11
Allopurinol	Allopurinol	97	30
Pravastatin Sodium	Pravastatin Sodium	93	20
Duloxetine Hcl	Duloxetine Hcl	92	21
Glipizide	Glipizide	90	24
Meloxicam	Meloxicam	90	20
Clopidogrel	Clopidogrel Bisulfate	85	26
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	84	25
Citalopram Hbr	Citalopram Hydrobromide	82	15
Montelukast Sodium	Montelukast Sodium	82	25
Carvedilol	Carvedilol	80	23
Lorazepam	Lorazepam	80	11
Eliquis	Apixaban	79	21
Clonazepam	Clonazepam	78	suppressed
Potassium Chloride	Potassium Chloride	77	21
Famotidine	Famotidine	71	23
Ropinirole Hcl	Ropinirole Hcl	71	17
Warfarin Sodium	Warfarin Sodium	67	14
Trulicity	Dulaglutide	63	suppressed
Glimepiride	Glimepiride	61	16
Buspirone Hcl	Buspirone Hcl	60	14
Escitalopram Oxalate	Escitalopram Oxalate	59	18
Acetaminophen-Codeine	Acetaminophen With Codeine	56	suppressed
Lovastatin	Lovastatin	53	16
Januvia	Sitagliptin Phosphate	51	11
Oxybutynin Chloride Er	Oxybutynin Chloride	49	suppressed
Atenolol	Atenolol	48	13
Spironolactone	Spironolactone	48	12
Enalapril Maleate	Enalapril Maleate	45	12
Baclofen	Baclofen	44	13
Esomeprazole Magnesium	Esomeprazole Magnesium	43	11
Naproxen	Naproxen	43	suppressed
Paroxetine Hcl	Paroxetine Hcl	42	11
Tizanidine Hcl	Tizanidine Hcl	42	suppressed
Ventolin Hfa	Albuterol Sulfate	41	15
Bupropion Xl	Bupropion Hcl	40	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	40	suppressed
Sucralfate	Sucralfate	40	12
Amitriptyline Hcl	Amitriptyline Hcl	38	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	38	14
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	38	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	38	suppressed
Ondansetron Hcl	Ondansetron Hcl	37	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	37	25
Quetiapine Fumarate	Quetiapine Fumarate	36	suppressed
Glipizide Er	Glipizide	35	suppressed
Cephalexin	Cephalexin	33	20
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	33	suppressed
Nitroglycerin	Nitroglycerin	32	17
Jardiance	Empagliflozin	31	suppressed
Novolog Flexpen	Insulin Aspart	31	suppressed
Ultra-Fine Mini Pen Needle	Pen Needle, Diabetic	31	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	30	suppressed
Prednisone	Prednisone	30	22
Methocarbamol	Methocarbamol	29	suppressed
Fenofibrate	Fenofibrate,micronized	28	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	28	suppressed
Morphine Sulfate Er	Morphine Sulfate	28	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	28	12
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	27	suppressed
Breo Ellipta	Fluticasone/Vilanterol	27	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	27	suppressed
Estradiol	Estradiol	26	suppressed
Meclizine Hcl	Meclizine Hcl	26	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	26	suppressed
Ozempic	Semaglutide	26	suppressed
Rizatriptan	Rizatriptan Benzoate	26	suppressed
Temazepam	Temazepam	26	suppressed
Valacyclovir	Valacyclovir Hcl	26	suppressed
Desvenlafaxine Succinate Er	Desvenlafaxine Succinate	25	suppressed
Ezetimibe	Ezetimibe	25	suppressed
Levetiracetam	Levetiracetam	25	suppressed
Mirtazapine	Mirtazapine	25	suppressed
Trueplus Pen Needle	Pen Needle, Diabetic	25	suppressed
Azithromycin	Azithromycin	24	20
Hydralazine Hcl	Hydralazine Hcl	24	suppressed
Celecoxib	Celecoxib	23	suppressed
Mounjaro	Tirzepatide	23	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	23	17
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	21	suppressed
Alendronate Sodium	Alendronate Sodium	20	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	20	suppressed
Donepezil Hcl	Donepezil Hcl	20	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	20	suppressed
Lansoprazole	Lansoprazole	20	suppressed
Olanzapine	Olanzapine	20	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	20	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	20	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	19	17
Diclofenac Sodium	Diclofenac Sodium	19	suppressed
Fluticasone Propionate Hfa	Fluticasone Propionate	19	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	19	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	19	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	19	suppressed
Nifedipine Er	Nifedipine	19	suppressed
Gemfibrozil	Gemfibrozil	18	suppressed
Morphine Sulfate	Morphine Sulfate	18	suppressed
Nadolol	Nadolol	18	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	17	suppressed
Ondansetron Odt	Ondansetron	17	suppressed
Synthroid	Levothyroxine Sodium	17	suppressed
Carbamazepine Er	Carbamazepine	16	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	16	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	16	suppressed
Labetalol Hcl	Labetalol Hcl	16	suppressed
Lithium Carbonate	Lithium Carbonate	16	suppressed
Bumetanide	Bumetanide	15	suppressed
Dulera	Mometasone/Formoterol	15	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	15	suppressed
Nystatin	Nystatin	15	11
Propranolol Hcl	Propranolol Hcl	15	suppressed
Topiramate	Topiramate	15	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	15	suppressed
Finasteride	Finasteride	14	suppressed
Lamotrigine	Lamotrigine	14	suppressed
Lidocaine	Lidocaine	14	suppressed
Mometasone Furoate	Mometasone Furoate	14	suppressed
Clozapine Odt	Clozapine	13	suppressed
Incruse Ellipta	Umeclidinium Bromide	13	suppressed
Linzess	Linaclotide	13	suppressed
Nikki	Ethinyl Estradiol/Drospirenone	13	suppressed
Propranolol Hcl Er	Propranolol Hcl	13	suppressed
Triazolam	Triazolam	13	suppressed
Bupropion Hcl Sr	Bupropion Hcl	12	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	12	suppressed
Clonidine Hcl	Clonidine Hcl	12	suppressed
Colchicine	Colchicine	12	suppressed
Fentanyl	Fentanyl	12	suppressed
Irbesartan	Irbesartan	12	suppressed
Ketoconazole	Ketoconazole	12	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	12	suppressed
Tadalafil	Tadalafil	12	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	12	suppressed
Victoza 3-Pak	Liraglutide	12	suppressed
Acarbose	Acarbose	11	suppressed
Aripiprazole	Aripiprazole	11	suppressed
Carbamazepine	Carbamazepine	11	suppressed
Carisoprodol	Carisoprodol	11	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	11	suppressed
Droplet Pen Needle	Pen Needle, Diabetic	11	suppressed
Gralise	Gabapentin	11	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	11	suppressed
Ramipril	Ramipril	11	suppressed
Sulfasalazine	Sulfasalazine	11	suppressed
Symbicort	Budesonide/Formoterol Fumarate	11	suppressed
Trintellix	Vortioxetine Hydrobromide	11	suppressed
Vyvanse	Lisdexamfetamine Dimesylate	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