Healthcare provider profile · identity verified

Mark Langlois, M.D.

Family Practice · FRANKFORT, MI · NPI 1295154656

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	700	98
Levothyroxine Sodium	Levothyroxine Sodium	455	55
Eliquis	Apixaban	423	30
Amlodipine Besylate	Amlodipine Besylate	337	58
Furosemide	Furosemide	328	51
Gabapentin	Gabapentin	328	63
Potassium Chloride	Potassium Chloride	302	29
Metoprolol Succinate	Metoprolol Succinate	282	42
Sertraline Hcl	Sertraline Hcl	282	34
Lisinopril	Lisinopril	281	43
Tamsulosin Hcl	Tamsulosin Hcl	231	35
Duloxetine Hcl	Duloxetine Hcl	220	33
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	185	20
Metoprolol Tartrate	Metoprolol Tartrate	185	24
Diclofenac Sodium	Diclofenac Sodium	177	34
Trazodone Hcl	Trazodone Hcl	175	30
Omeprazole	Omeprazole	153	28
Risperidone	Risperidone	151	19
Losartan Potassium	Losartan Potassium	148	25
Mirtazapine	Mirtazapine	146	23
Metformin Hcl	Metformin Hcl	141	19
Levetiracetam	Levetiracetam	137	18
Pantoprazole Sodium	Pantoprazole Sodium	130	21
Clopidogrel	Clopidogrel Bisulfate	129	16
Donepezil Hcl	Donepezil Hcl	123	17
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	123	28
Buspirone Hcl	Buspirone Hcl	120	18
Carvedilol	Carvedilol	120	15
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	119	11
Citalopram Hbr	Citalopram Hydrobromide	103	20
Quetiapine Fumarate	Quetiapine Fumarate	103	20
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	98	13
Memantine Hcl	Memantine Hcl	97	12
Hydrochlorothiazide	Hydrochlorothiazide	96	13
Famotidine	Famotidine	93	16
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	92	suppressed
Allopurinol	Allopurinol	90	14
Warfarin Sodium	Warfarin Sodium	90	suppressed
Lamotrigine	Lamotrigine	89	suppressed
Simvastatin	Simvastatin	89	15
Escitalopram Oxalate	Escitalopram Oxalate	86	17
Bumetanide	Bumetanide	83	18
Tradjenta	Linagliptin	83	suppressed
Jardiance	Empagliflozin	78	suppressed
Lorazepam	Lorazepam	77	28
Tramadol Hcl	Tramadol Hcl	74	16
Abrysvo	Rsv Vacc, Pref A And Pref B/Pf	73	72
Divalproex Sodium	Divalproex Sodium	70	11
Lactulose	Lactulose	70	suppressed
Nystatin	Nystatin	67	35
Isosorbide Mononitrate Er	Isosorbide Mononitrate	65	suppressed
Novolog Flexpen	Insulin Aspart	64	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	64	11
Montelukast Sodium	Montelukast Sodium	62	suppressed
Pregabalin	Pregabalin	62	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	61	29
Spironolactone	Spironolactone	61	suppressed
Aripiprazole	Aripiprazole	60	suppressed
Finasteride	Finasteride	56	suppressed
Olanzapine	Olanzapine	56	suppressed
Paroxetine Hcl	Paroxetine Hcl	56	suppressed
Xarelto	Rivaroxaban	55	suppressed
Hydralazine Hcl	Hydralazine Hcl	50	suppressed
Metformin Hcl Er	Metformin Hcl	49	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	47	suppressed
Prednisone	Prednisone	47	11
Oxycodone Hcl	Oxycodone Hcl	46	22
Trulicity	Dulaglutide	45	suppressed
Albuterol Sulfate Hfa	Albuterol Sulfate	44	21
Fluticasone Propionate	Fluticasone Propionate	44	18
Torsemide	Torsemide	44	suppressed
Baclofen	Baclofen	41	suppressed
Januvia	Sitagliptin Phosphate	40	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	40	suppressed
Meloxicam	Meloxicam	40	suppressed
Carbidopa-Levodopa Er	Carbidopa/Levodopa	39	suppressed
Primidone	Primidone	39	suppressed
Divalproex Sodium Er	Divalproex Sodium	37	suppressed
Pravastatin Sodium	Pravastatin Sodium	37	suppressed
Latanoprost	Latanoprost	36	suppressed
Lithium Carbonate	Lithium Carbonate	36	suppressed
Methotrexate	Methotrexate Sodium	36	suppressed
Myrbetriq	Mirabegron	36	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	36	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	35	suppressed
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	35	12
Timolol Maleate	Timolol Maleate	35	suppressed
Oseltamivir Phosphate	Oseltamivir Phosphate	34	34
Clonazepam	Clonazepam	33	suppressed
Bupropion Xl	Bupropion Hcl	32	suppressed
Cephalexin	Cephalexin	31	18
Glipizide	Glipizide	31	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	31	suppressed
Colchicine	Colchicine	30	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	30	suppressed
Ondansetron Hcl	Ondansetron Hcl	30	suppressed
Topiramate	Topiramate	30	suppressed
Clonidine Hcl	Clonidine Hcl	27	suppressed
Albuterol Sulfate	Albuterol Sulfate	26	suppressed
Alprazolam	Alprazolam	26	suppressed
Bupropion Hcl Sr	Bupropion Hcl	26	suppressed
Entacapone	Entacapone	26	suppressed
Insulin Aspart Flexpen	Insulin Aspart	25	suppressed
Digoxin	Digoxin	24	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	24	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	23	suppressed
Atenolol	Atenolol	23	suppressed
Clozapine	Clozapine	23	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	23	suppressed
Humalog Kwikpen U-100	Insulin Lispro	22	suppressed
Rexulti	Brexpiprazole	22	suppressed
Rosuvastatin Calcium	Rosuvastatin Calcium	22	suppressed
Tizanidine Hcl	Tizanidine Hcl	22	suppressed
Anastrozole	Anastrozole	21	suppressed
Calcitriol	Calcitriol	21	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	21	suppressed
Shingrix	Varicella-Zoster Ge/As01b/Pf	21	20
Valproic Acid	Valproic Acid	21	suppressed
Amoxicillin	Amoxicillin	20	suppressed
Lokelma	Sodium Zirconium Cyclosilicate	20	suppressed
Nifedipine Er	Nifedipine	20	suppressed
Oxcarbazepine	Oxcarbazepine	20	suppressed
Xifaxan	Rifaximin	19	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	18	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	18	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	18	suppressed
Alendronate Sodium	Alendronate Sodium	17	suppressed
Brimonidine Tartrate	Brimonidine Tartrate	17	suppressed
Dulera	Mometasone/Formoterol	17	suppressed
Amiodarone Hcl	Amiodarone Hcl	16	suppressed
Azithromycin	Azithromycin	16	12
Breo Ellipta	Fluticasone/Vilanterol	16	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	16	suppressed
Fluconazole	Fluconazole	16	12
Tiotropium Bromide	Tiotropium Bromide	16	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	15	11
Ciprofloxacin Hcl	Ciprofloxacin Hcl	15	13
Fiasp Flextouch	Insulin Aspart (Niacinamide)	15	suppressed
Folic Acid	Folic Acid	15	suppressed
Gemtesa	Vibegron	15	suppressed
Midodrine Hcl	Midodrine Hcl	15	suppressed
Morphine Sulfate	Morphine Sulfate	15	15
Mupirocin	Mupirocin	15	11
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	15	11
Oxybutynin Chloride	Oxybutynin Chloride	15	suppressed
Rivastigmine	Rivastigmine Tartrate	15	suppressed
Sevelamer Carbonate	Sevelamer Carbonate	15	suppressed
Terazosin Hcl	Terazosin Hcl	15	suppressed
Valproic Acid	Valproic Acid (As Sodium Salt)	15	suppressed
Fentanyl	Fentanyl	14	suppressed
Fludrocortisone Acetate	Fludrocortisone Acetate	14	suppressed
Spiriva Respimat	Tiotropium Bromide	14	suppressed
Tresiba Flextouch U-200	Insulin Degludec	14	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	14	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	14	suppressed
Amantadine	Amantadine Hcl	13	suppressed
Brilinta	Ticagrelor	13	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	13	suppressed
Enalapril Maleate	Enalapril Maleate	13	suppressed
Ezetimibe	Ezetimibe	13	suppressed
Glatiramer Acetate	Glatiramer Acetate	13	suppressed
Glipizide Er	Glipizide	13	suppressed
Glycopyrrolate	Glycopyrrolate	13	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	13	suppressed
Methimazole	Methimazole	13	suppressed
Sotalol	Sotalol Hcl	13	suppressed
Zonisamide	Zonisamide	13	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	12	suppressed
Combigan	Brimonidine Tartrate/Timolol	12	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	12	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	12	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	12	suppressed
Rebif	Interferon Beta-1a/Albumin	12	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	11	suppressed
Bupropion Hcl	Bupropion Hcl	11	suppressed
Entresto	Sacubitril/Valsartan	11	suppressed
Nortriptyline Hcl	Nortriptyline 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