Healthcare provider profile · identity verified

Palaniappan Muthappan, M.D.

Internal Medicine · EXPORT, PA · NPI 1700810702

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	925	222
Levothyroxine Sodium	Levothyroxine Sodium	788	131
Amlodipine Besylate	Amlodipine Besylate	653	156
Pantoprazole Sodium	Pantoprazole Sodium	604	163
Furosemide	Furosemide	595	146
Sertraline Hcl	Sertraline Hcl	415	80
Metoprolol Succinate	Metoprolol Succinate	414	105
Potassium Chloride	Potassium Chloride	387	101
Losartan Potassium	Losartan Potassium	347	91
Metoprolol Tartrate	Metoprolol Tartrate	335	74
Lisinopril	Lisinopril	328	82
Quetiapine Fumarate	Quetiapine Fumarate	317	52
Tamsulosin Hcl	Tamsulosin Hcl	309	88
Eliquis	Apixaban	307	77
Mirtazapine	Mirtazapine	280	50
Warfarin Sodium	Warfarin Sodium	278	30
Gabapentin	Gabapentin	271	84
Omeprazole	Omeprazole	271	73
Pravastatin Sodium	Pravastatin Sodium	253	60
Trazodone Hcl	Trazodone Hcl	238	51
Rosuvastatin Calcium	Rosuvastatin Calcium	221	62
Clopidogrel	Clopidogrel Bisulfate	207	53
Tramadol Hcl	Tramadol Hcl	201	61
Donepezil Hcl	Donepezil Hcl	197	41
Famotidine	Famotidine	171	43
Duloxetine Hcl	Duloxetine Hcl	168	36
Carvedilol	Carvedilol	164	44
Escitalopram Oxalate	Escitalopram Oxalate	162	38
Allopurinol	Allopurinol	155	44
Atenolol	Atenolol	150	40
Glipizide	Glipizide	149	33
Lorazepam	Lorazepam	141	38
Metformin Hcl	Metformin Hcl	139	36
Spironolactone	Spironolactone	139	33
Bumetanide	Bumetanide	127	41
Levetiracetam	Levetiracetam	127	28
Albuterol Sulfate Hfa	Albuterol Sulfate	124	66
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	124	26
Finasteride	Finasteride	121	34
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	120	35
Risperidone	Risperidone	117	22
Metformin Hcl Er	Metformin Hcl	112	47
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	106	80
Memantine Hcl	Memantine Hcl	105	21
Montelukast Sodium	Montelukast Sodium	102	27
Cefuroxime	Cefuroxime Axetil	100	80
Ciprofloxacin Hcl	Ciprofloxacin Hcl	99	72
Simvastatin	Simvastatin	93	21
Oxycodone Hcl	Oxycodone Hcl	91	34
Hydralazine Hcl	Hydralazine Hcl	89	27
Buspirone Hcl	Buspirone Hcl	87	29
Alprazolam	Alprazolam	84	16
Azithromycin	Azithromycin	84	63
Fluoxetine Hcl	Fluoxetine Hcl	84	13
Olanzapine	Olanzapine	84	15
Xarelto	Rivaroxaban	84	15
Amoxicillin	Amoxicillin	82	54
Tradjenta	Linagliptin	82	14
Clonazepam	Clonazepam	81	15
Hydrochlorothiazide	Hydrochlorothiazide	80	22
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	80	11
Isosorbide Mononitrate Er	Isosorbide Mononitrate	78	18
Citalopram Hbr	Citalopram Hydrobromide	76	16
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	76	20
Triamcinolone Acetonide	Triamcinolone Acetonide	76	53
Ropinirole Hcl	Ropinirole Hcl	71	19
Prednisone	Prednisone	68	38
Breo Ellipta	Fluticasone/Vilanterol	66	23
Jardiance	Empagliflozin	65	24
Lamotrigine	Lamotrigine	65	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	62	32
Hydroxyzine Hcl	Hydroxyzine Hcl	61	13
Bupropion Hcl	Bupropion Hcl	59	suppressed
Meloxicam	Meloxicam	59	30
Valsartan	Valsartan	59	16
Doxycycline Hyclate	Doxycycline Hyclate	58	49
Ondansetron Hcl	Ondansetron Hcl	58	37
Bupropion Hcl Sr	Bupropion Hcl	57	suppressed
Amiodarone Hcl	Amiodarone Hcl	55	11
Venlafaxine Hcl Er	Venlafaxine Hcl	55	suppressed
Celecoxib	Celecoxib	53	22
Entresto	Sacubitril/Valsartan	53	11
Mupirocin	Mupirocin	48	38
Aripiprazole	Aripiprazole	47	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	47	suppressed
Sucralfate	Sucralfate	46	20
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	45	suppressed
Dabigatran Etexilate	Dabigatran Etexilate Mesylate	44	suppressed
Loperamide	Loperamide Hcl	44	28
Unifine Safecontrol Pen Needle	Pen Needle,dual Safety,diabetc	44	13
Alendronate Sodium	Alendronate Sodium	43	12
Metronidazole	Metronidazole	42	34
Sotalol	Sotalol Hcl	42	suppressed
Haloperidol	Haloperidol	41	suppressed
Klor-Con M10	Potassium Chloride	41	14
Levofloxacin	Levofloxacin	40	29
Chlorthalidone	Chlorthalidone	39	suppressed
Clindamycin Hcl	Clindamycin Hcl	39	34
Divalproex Sodium Er	Divalproex Sodium	38	suppressed
Ezetimibe	Ezetimibe	38	15
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	38	suppressed
Creon	Lipase/Protease/Amylase	37	suppressed
Januvia	Sitagliptin Phosphate	37	suppressed
Terazosin Hcl	Terazosin Hcl	36	suppressed
Cephalexin	Cephalexin	34	29
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	34	suppressed
Hydrocortisone	Hydrocortisone	34	16
Benztropine Mesylate	Benztropine Mesylate	33	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	33	26
Gemfibrozil	Gemfibrozil	33	suppressed
Meclizine Hcl	Meclizine Hcl	33	23
Nystatin	Nystatin	33	25
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	32	23
Digoxin	Digoxin	32	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	31	suppressed
Metolazone	Metolazone	31	22
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	30	11
Enalapril Maleate	Enalapril Maleate	29	suppressed
Midodrine Hcl	Midodrine Hcl	29	suppressed
Synthroid	Levothyroxine Sodium	29	suppressed
Bupropion Xl	Bupropion Hcl	28	suppressed
Diltiazem Hcl	Diltiazem Hcl	27	16
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	27	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	27	11
Primidone	Primidone	27	suppressed
Theophylline Er	Theophylline Anhydrous	27	suppressed
Clonidine Hcl	Clonidine Hcl	25	suppressed
Dexamethasone	Dexamethasone	25	20
Fenofibrate	Fenofibrate Nanocrystallized	25	suppressed
Humalog Kwikpen U-100	Insulin Lispro	25	11
Trulicity	Dulaglutide	25	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	24	suppressed
Hydroxyzine Pamoate	Hydroxyzine Pamoate	24	suppressed
Labetalol Hcl	Labetalol Hcl	24	suppressed
Latanoprost	Latanoprost	24	suppressed
Fludrocortisone Acetate	Fludrocortisone Acetate	23	suppressed
Myrbetriq	Mirabegron	23	suppressed
Repaglinide	Repaglinide	23	suppressed
Baclofen	Baclofen	22	suppressed
Brilinta	Ticagrelor	22	suppressed
Liothyronine Sodium	Liothyronine Sodium	22	suppressed
Ondansetron Odt	Ondansetron	22	16
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	21	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	21	suppressed
Glimepiride	Glimepiride	20	suppressed
Methimazole	Methimazole	20	suppressed
Pregabalin	Pregabalin	20	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	19	suppressed
Colesevelam Hcl	Colesevelam Hcl	19	suppressed
Fluconazole	Fluconazole	19	16
Fluticasone Propionate	Fluticasone Propionate	19	13
Ibuprofen	Ibuprofen	19	12
Lactulose	Lactulose	19	16
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	19	suppressed
Ventolin Hfa	Albuterol Sulfate	19	suppressed
Morphine Sulfate Er	Morphine Sulfate	18	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	17	suppressed
Diclofenac Sodium	Diclofenac Sodium	17	suppressed
Fenofibrate	Fenofibrate	17	suppressed
Glyxambi	Empagliflozin/Linagliptin	17	suppressed
Nitroglycerin	Nitroglycerin	17	15
Topiramate	Topiramate	17	suppressed
Anastrozole	Anastrozole	16	suppressed
Erythromycin	Erythromycin Base	16	14
Esomeprazole Magnesium	Esomeprazole Magnesium	16	suppressed
Methylprednisolone	Methylprednisolone	16	13
Novolog Flexpen	Insulin Aspart	16	suppressed
Fenofibrate	Fenofibrate,micronized	15	suppressed
Lovastatin	Lovastatin	15	suppressed
Methocarbamol	Methocarbamol	15	suppressed
Ozempic	Semaglutide	15	suppressed
Cinacalcet Hcl	Cinacalcet Hcl	14	suppressed
Cyclosporine	Cyclosporine	14	suppressed
Folic Acid	Folic Acid	14	suppressed
Spiriva Respimat	Tiotropium Bromide	14	suppressed
Temazepam	Temazepam	14	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	14	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	13	suppressed
Irbesartan	Irbesartan	13	suppressed
Lithium Carbonate Er	Lithium Carbonate	13	suppressed
Lurasidone Hcl	Lurasidone Hcl	13	suppressed
Paliperidone Er	Paliperidone	13	suppressed
Prazosin Hcl	Prazosin Hcl	13	suppressed
Cilostazol	Cilostazol	12	suppressed
Isosorbide Dinitrate	Isosorbide Dinitrate	12	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	12	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	12	suppressed
Valproic Acid	Valproic Acid	12	suppressed
Arexvy	Rsvpref3 Antigen/As01e/Pf	11	11
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	11	suppressed
Carisoprodol	Carisoprodol	11	suppressed
Glycopyrrolate	Glycopyrrolate	11	suppressed
Invega Sustenna	Paliperidone Palmitate	11	suppressed
Paroxetine Hcl	Paroxetine Hcl	11	suppressed
Polymyxin B Sul-Trimethoprim	Polymyxin B Sulf/Trimethoprim	11	suppressed
Ssd	Silver Sulfadiazine	11	11
Vitamin D2	Ergocalciferol (Vitamin D2)	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