Healthcare provider profile · identity verified

William M Demarchi, MD

Internal Medicine · BOCA RATON, FL · NPI 1659353100

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	1649	294
Eliquis	Apixaban	1571	153
Amlodipine Besylate	Amlodipine Besylate	1117	240
Gabapentin	Gabapentin	963	151
Furosemide	Furosemide	915	145
Levothyroxine Sodium	Levothyroxine Sodium	915	163
Pantoprazole Sodium	Pantoprazole Sodium	757	141
Tamsulosin Hcl	Tamsulosin Hcl	621	122
Sertraline Hcl	Sertraline Hcl	586	109
Rosuvastatin Calcium	Rosuvastatin Calcium	551	162
Trazodone Hcl	Trazodone Hcl	502	108
Losartan Potassium	Losartan Potassium	501	135
Carvedilol	Carvedilol	496	81
Clopidogrel	Clopidogrel Bisulfate	482	83
Donepezil Hcl	Donepezil Hcl	482	69
Mirtazapine	Mirtazapine	480	94
Metoprolol Tartrate	Metoprolol Tartrate	470	116
Metoprolol Succinate	Metoprolol Succinate	466	109
Potassium Chloride	Potassium Chloride	455	87
Lisinopril	Lisinopril	449	86
Metformin Hcl	Metformin Hcl	444	107
Levetiracetam	Levetiracetam	422	52
Memantine Hcl	Memantine Hcl	370	52
Allopurinol	Allopurinol	331	55
Escitalopram Oxalate	Escitalopram Oxalate	314	58
Famotidine	Famotidine	304	54
Omeprazole	Omeprazole	304	86
Latanoprost	Latanoprost	282	60
Duloxetine Hcl	Duloxetine Hcl	271	51
Divalproex Sodium	Divalproex Sodium	260	41
Jardiance	Empagliflozin	246	28
Hydralazine Hcl	Hydralazine Hcl	235	56
Quetiapine Fumarate	Quetiapine Fumarate	235	61
Trulicity	Dulaglutide	229	21
Simvastatin	Simvastatin	227	75
Pravastatin Sodium	Pravastatin Sodium	221	42
Risperidone	Risperidone	213	34
Baclofen	Baclofen	207	35
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	207	50
Isosorbide Mononitrate Er	Isosorbide Mononitrate	193	26
Myrbetriq	Mirabegron	188	19
Hydrochlorothiazide	Hydrochlorothiazide	184	51
Olanzapine	Olanzapine	184	28
Finasteride	Finasteride	183	36
Prednisone	Prednisone	181	52
Montelukast Sodium	Montelukast Sodium	172	44
Januvia	Sitagliptin Phosphate	163	15
Amiodarone Hcl	Amiodarone Hcl	162	26
Citalopram Hbr	Citalopram Hydrobromide	155	27
Fluticasone Propionate	Fluticasone Propionate	150	57
Lamotrigine	Lamotrigine	143	16
Spironolactone	Spironolactone	137	33
Xarelto	Rivaroxaban	136	21
Alendronate Sodium	Alendronate Sodium	123	30
Ondansetron Hcl	Ondansetron Hcl	122	75
Buspirone Hcl	Buspirone Hcl	119	27
Fluoxetine Hcl	Fluoxetine Hcl	116	23
Insulin Lispro Kwikpen U-100	Insulin Lispro	116	36
Doxycycline Hyclate	Doxycycline Hyclate	108	65
Warfarin Sodium	Warfarin Sodium	106	11
Paroxetine Hcl	Paroxetine Hcl	104	22
Atenolol	Atenolol	99	24
Brimonidine Tartrate	Brimonidine Tartrate	99	19
Sucralfate	Sucralfate	98	15
Alprazolam	Alprazolam	96	37
Meloxicam	Meloxicam	95	23
Tradjenta	Linagliptin	95	suppressed
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	92	54
Ezetimibe	Ezetimibe	90	23
Lactulose	Lactulose	88	26
Oxybutynin Chloride	Oxybutynin Chloride	88	17
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	86	suppressed
Lidocaine Hcl	Lidocaine Hcl	86	54
Torsemide	Torsemide	85	22
Sodium Chloride	0.9 % Sodium Chloride	83	35
Ciprofloxacin Hcl	Ciprofloxacin Hcl	81	50
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	80	51
Doxazosin Mesylate	Doxazosin Mesylate	79	suppressed
Movantik	Naloxegol Oxalate	76	suppressed
Vascepa	Icosapent Ethyl	75	suppressed
Autoshield Duo Pen Needle	Pen Needle,dual Safety,diabetc	74	15
Bupropion Xl	Bupropion Hcl	72	11
Cephalexin	Cephalexin	71	42
Carbidopa-Levodopa	Carbidopa/Levodopa	70	11
Glipizide	Glipizide	70	24
Metformin Hcl Er	Metformin Hcl	70	19
Triamcinolone Acetonide	Triamcinolone Acetonide	69	28
Albuterol Sulfate Hfa	Albuterol Sulfate	67	44
Aripiprazole	Aripiprazole	66	11
Oxycodone Hcl	Oxycodone Hcl	65	20
Metoclopramide Hcl	Metoclopramide Hcl	64	14
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	62	48
Ceftriaxone	Ceftriaxone Sodium	62	47
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	62	18
Nystatin	Nystatin	62	41
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	59	19
Ertapenem	Ertapenem Sodium	58	28
Ozempic	Semaglutide	58	19
Venlafaxine Hcl	Venlafaxine Hcl	58	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	57	32
Tramadol Hcl	Tramadol Hcl	56	27
Chlorhexidine Gluconate	Chlorhexidine Gluconate	55	16
Budesonide	Budesonide	54	suppressed
Bupropion Hcl Sr	Bupropion Hcl	54	12
Klor-Con 10	Potassium Chloride	53	suppressed
Lorazepam	Lorazepam	53	30
Valsartan	Valsartan	53	18
Flecainide Acetate	Flecainide Acetate	52	suppressed
Humalog Kwikpen U-100	Insulin Lispro	52	17
Linzess	Linaclotide	52	12
Diltiazem Hcl	Diltiazem Hcl	51	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	50	suppressed
Midodrine Hcl	Midodrine Hcl	50	14
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	49	35
Lovastatin	Lovastatin	48	12
Tizanidine Hcl	Tizanidine Hcl	48	11
Azithromycin	Azithromycin	47	37
Lansoprazole	Lansoprazole	47	suppressed
Clonidine Hcl	Clonidine Hcl	46	18
Clozapine	Clozapine	46	suppressed
Clonazepam	Clonazepam	42	15
Nitroglycerin	Nitroglycerin	42	31
Symbicort	Budesonide/Formoterol Fumarate	42	17
Benztropine Mesylate	Benztropine Mesylate	41	suppressed
Insulin Aspart Flexpen	Insulin Aspart	41	12
Albuterol Sulfate	Albuterol Sulfate	40	20
Anastrozole	Anastrozole	40	suppressed
Novolog Flexpen	Insulin Aspart	40	14
Oxybutynin Chloride Er	Oxybutynin Chloride	40	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	40	27
Amitriptyline Hcl	Amitriptyline Hcl	39	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	39	suppressed
Fenofibrate	Fenofibrate	38	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	38	suppressed
Dilt-Xr	Diltiazem Hcl	37	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	37	suppressed
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	37	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	37	suppressed
Diclofenac Sodium	Diclofenac Sodium	36	17
Lokelma	Sodium Zirconium Cyclosilicate	36	suppressed
Santyl	Collagenase Clostridium Hist.	36	24
Methotrexate	Methotrexate Sodium	35	suppressed
Ranolazine Er	Ranolazine	35	suppressed
Breo Ellipta	Fluticasone/Vilanterol	34	12
Bumetanide	Bumetanide	34	14
Farxiga	Dapagliflozin Propanediol	34	suppressed
Glipizide Er	Glipizide	34	suppressed
Ibuprofen	Ibuprofen	34	17
Insulin Lispro	Insulin Lispro	34	suppressed
Lidocaine	Lidocaine	34	suppressed
Ropinirole Hcl	Ropinirole Hcl	34	suppressed
Valproic Acid	Valproic Acid (As Sodium Salt)	34	suppressed
Cinacalcet Hcl	Cinacalcet Hcl	33	suppressed
Colchicine	Colchicine	33	suppressed
Divalproex Sodium Er	Divalproex Sodium	33	suppressed
Ipratropium Bromide	Ipratropium Bromide	33	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	33	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	32	suppressed
Fluconazole	Fluconazole	32	24
Isosorbide Dinitrate	Isosorbide Dinitrate	32	suppressed
Lubiprostone	Lubiprostone	31	suppressed
Nifedipine Er	Nifedipine	31	suppressed
Pregabalin	Pregabalin	31	12
Sodium Bicarbonate	Sodium Bicarbonate	31	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	31	suppressed
Prednisolone Acetate	Prednisolone Acetate	30	13
Tolterodine Tartrate Er	Tolterodine Tartrate	30	suppressed
Digoxin	Digoxin	29	suppressed
Hydrocortisone	Hydrocortisone	29	13
Methimazole	Methimazole	29	suppressed
Diltiazem 12hr Er	Diltiazem Hcl	28	suppressed
Ketoconazole	Ketoconazole	28	18
Labetalol Hcl	Labetalol Hcl	28	suppressed
Ondansetron Odt	Ondansetron	28	21
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	27	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	27	suppressed
Dorzolamide-Timolol	Dorzolamide Hcl/Timolol Maleat	27	suppressed
Dorzolamide-Timolol	Dorzolamide/Timolol/Pf	27	suppressed
Formoterol Fumarate	Formoterol Fumarate	27	suppressed
Meclizine Hcl	Meclizine Hcl	27	12
Temazepam	Temazepam	27	suppressed
Calcium Acetate	Calcium Acetate	25	suppressed
Chlorthalidone	Chlorthalidone	25	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	25	13
Desvenlafaxine Succinate Er	Desvenlafaxine Succinate	25	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	25	suppressed
Levofloxacin	Levofloxacin	25	20
Mirabegron Er	Mirabegron	25	suppressed
Namzaric	Memantine Hcl/Donepezil Hcl	25	suppressed
Nitrofurantoin	Nitrofurantoin Macrocrystal	25	15
Thiothixene	Thiothixene	25	suppressed
Benazepril Hcl	Benazepril Hcl	24	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	24	11
Nystop	Nystatin	24	suppressed
Primidone	Primidone	24	suppressed
Topiramate	Topiramate	24	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	23	suppressed
Cyclosporine	Cyclosporine	23	suppressed
Restasis	Cyclosporine	23	suppressed
Sevelamer Carbonate	Sevelamer Carbonate	23	suppressed
Simbrinza	Brinzolamide/Brimonidine Tart	23	suppressed
Solifenacin Succinate	Solifenacin Succinate	23	suppressed
Naproxen	Naproxen	22	suppressed
Terazosin Hcl	Terazosin Hcl	22	suppressed
Tresiba Flextouch U-100	Insulin Degludec	22	suppressed
Amoxicillin	Amoxicillin	21	16
Brimonidine Tartrate-Timolol	Brimonidine Tartrate/Timolol	21	suppressed
Phenytoin	Phenytoin	21	suppressed
Ramipril	Ramipril	21	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	21	suppressed
Kerendia	Finerenone	20	suppressed
Methocarbamol	Methocarbamol	20	12
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	20	suppressed
Verapamil Er	Verapamil Hcl	20	suppressed
Abacavir	Abacavir Sulfate	19	suppressed
Brilinta	Ticagrelor	19	suppressed
Calcitonin-Salmon	Calcitonin,salmon,synthetic	19	suppressed
Propranolol Hcl	Propranolol Hcl	19	suppressed
Valacyclovir	Valacyclovir Hcl	19	suppressed
Ventolin Hfa	Albuterol Sulfate	19	suppressed
Cefuroxime	Cefuroxime Axetil	18	14
Clonidine	Clonidine	18	suppressed
Memantine Hcl Er	Memantine Hcl	18	suppressed
Folic Acid	Folic Acid	17	suppressed
Nebivolol Hcl	Nebivolol Hcl	17	suppressed
Ramelteon	Ramelteon	17	suppressed
Breyna	Budesonide/Formoterol Fumarate	16	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	16	suppressed
Humulin R	Insulin Regular, Human	16	suppressed
Janumet	Sitagliptin Phos/Metformin Hcl	16	suppressed
Letrozole	Letrozole	16	suppressed
Levemir Flexpen	Insulin Detemir	16	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	16	suppressed
Scopolamine	Scopolamine	16	suppressed
Stiolto Respimat	Tiotropium Br/Olodaterol Hcl	16	suppressed
Arnuity Ellipta	Fluticasone Furoate	15	suppressed
Icosapent Ethyl	Icosapent Ethyl	15	suppressed
Lumigan	Bimatoprost	15	suppressed
Methylprednisolone	Methylprednisolone	15	13
Metronidazole	Metronidazole	15	suppressed
Promethazine Hcl	Promethazine Hcl	15	suppressed
Dexamethasone	Dexamethasone	14	suppressed
Diltiazem 24hr Er (La)	Diltiazem Hcl	14	suppressed
Fluticasone-Vilanterol	Fluticasone/Vilanterol	14	suppressed
Haloperidol	Haloperidol	14	suppressed
Medroxyprogesterone Acetate	Medroxyprogesterone Acetate	14	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	14	12
Rybelsus	Semaglutide	14	suppressed
Sodium Chloride	Sodium Chloride 0.45 %	14	12
Spiriva Respimat	Tiotropium Bromide	14	suppressed
Testosterone Cypionate	Testosterone Cypionate	14	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	14	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	13	suppressed
Carbamazepine Er	Carbamazepine	13	suppressed
Cefdinir	Cefdinir	13	suppressed
Clotrimazole	Clotrimazole	13	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	13	suppressed
Entresto	Sacubitril/Valsartan	13	suppressed
Glimepiride	Glimepiride	13	suppressed
Glucagon Emergency Kit	Glucagon	13	suppressed
Gvoke Pfs 1-Pack Syringe	Glucagon	13	suppressed
Hydroxyurea	Hydroxyurea	13	suppressed
Ingrezza	Valbenazine Tosylate	13	suppressed
Isosorbide Dinit-Hydralazine	Isosorbide Dinit/Hydralazine	13	suppressed
Methenamine Hippurate	Methenamine Hippurate	13	suppressed
Mupirocin	Mupirocin	13	suppressed
Raloxifene Hcl	Raloxifene Hcl	13	suppressed
Silodosin	Silodosin	13	suppressed
Tiadylt Er	Diltiazem Hcl	13	suppressed
Acetazolamide	Acetazolamide	12	suppressed
Actemra	Tocilizumab	12	suppressed
Actemra Actpen	Tocilizumab	12	suppressed
Gvoke Hypopen 1-Pack	Glucagon	12	suppressed
Imipramine Hcl	Imipramine Hcl	12	suppressed
Norethindrone Acetate	Norethindrone Acetate	12	suppressed
Olanzapine Odt	Olanzapine	12	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	12	suppressed
Enalapril Maleate	Enalapril Maleate	11	suppressed
Enulose	Lactulose	11	suppressed
Invokana	Canagliflozin	11	suppressed
Paliperidone Er	Paliperidone	11	suppressed
Spiriva Handihaler	Tiotropium Bromide	11	suppressed
Timolol Maleate	Timolol Maleate	11	suppressed
Toujeo Max Solostar	Insulin Glargine,hum.Rec.Anlog	11	suppressed
Vraylar	Cariprazine 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