Healthcare provider profile · identity verified

Janarthanan Someswarananthan, MD

Internal Medicine · CHELMSFORD, MA · NPI 1134212830

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	2050	231
Trazodone Hcl	Trazodone Hcl	1894	155
Eliquis	Apixaban	1560	123
Gabapentin	Gabapentin	1471	116
Amlodipine Besylate	Amlodipine Besylate	1196	125
Sertraline Hcl	Sertraline Hcl	1083	103
Levothyroxine Sodium	Levothyroxine Sodium	1062	113
Metoprolol Succinate	Metoprolol Succinate	1052	118
Mirtazapine	Mirtazapine	1000	99
Furosemide	Furosemide	987	128
Pantoprazole Sodium	Pantoprazole Sodium	829	110
Quetiapine Fumarate	Quetiapine Fumarate	748	68
Tamsulosin Hcl	Tamsulosin Hcl	712	92
Lisinopril	Lisinopril	684	87
Metoprolol Tartrate	Metoprolol Tartrate	630	89
Omeprazole	Omeprazole	624	85
Donepezil Hcl	Donepezil Hcl	603	46
Escitalopram Oxalate	Escitalopram Oxalate	593	46
Torsemide	Torsemide	556	50
Metformin Hcl	Metformin Hcl	505	61
Potassium Chloride	Potassium Chloride	497	67
Famotidine	Famotidine	422	49
Olanzapine	Olanzapine	420	36
Divalproex Sodium	Divalproex Sodium	361	29
Duloxetine Hcl	Duloxetine Hcl	346	45
Losartan Potassium	Losartan Potassium	330	45
Memantine Hcl	Memantine Hcl	314	24
Carvedilol	Carvedilol	306	33
Simvastatin	Simvastatin	305	36
Clopidogrel	Clopidogrel Bisulfate	300	51
Citalopram Hbr	Citalopram Hydrobromide	255	29
Finasteride	Finasteride	254	32
Lamotrigine	Lamotrigine	251	19
Allopurinol	Allopurinol	250	29
Prednisone	Prednisone	244	67
Atenolol	Atenolol	243	21
Levetiracetam	Levetiracetam	239	40
Venlafaxine Hcl Er	Venlafaxine Hcl	229	12
Buspirone Hcl	Buspirone Hcl	216	24
Risperidone	Risperidone	215	26
Glipizide	Glipizide	176	20
Carbidopa-Levodopa	Carbidopa/Levodopa	174	19
Jardiance	Empagliflozin	174	18
Isosorbide Mononitrate Er	Isosorbide Mononitrate	169	18
Topiramate	Topiramate	158	suppressed
Midodrine Hcl	Midodrine Hcl	157	26
Baclofen	Baclofen	156	20
Pravastatin Sodium	Pravastatin Sodium	156	22
Hydralazine Hcl	Hydralazine Hcl	154	29
Rosuvastatin Calcium	Rosuvastatin Calcium	152	29
Spironolactone	Spironolactone	152	22
Xarelto	Rivaroxaban	148	19
Sucralfate	Sucralfate	142	15
Ezetimibe	Ezetimibe	136	12
Amiodarone Hcl	Amiodarone Hcl	135	22
Fluoxetine Hcl	Fluoxetine Hcl	129	22
Warfarin Sodium	Warfarin Sodium	127	18
Valsartan	Valsartan	126	15
Entresto	Sacubitril/Valsartan	111	suppressed
Bupropion Hcl	Bupropion Hcl	110	suppressed
Bupropion Hcl Sr	Bupropion Hcl	110	13
Ondansetron Hcl	Ondansetron Hcl	105	42
Doxazosin Mesylate	Doxazosin Mesylate	99	suppressed
Tradjenta	Linagliptin	98	suppressed
Fludrocortisone Acetate	Fludrocortisone Acetate	96	11
Memantine Hcl Er	Memantine Hcl	94	suppressed
Fluticasone Propionate	Fluticasone Propionate	93	20
Bupropion Xl	Bupropion Hcl	92	14
Nuplazid	Pimavanserin Tartrate	92	suppressed
Latanoprost	Latanoprost	88	16
Montelukast Sodium	Montelukast Sodium	88	17
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	86	12
Myrbetriq	Mirabegron	86	suppressed
Aripiprazole	Aripiprazole	84	15
Calcium Acetate	Calcium Acetate	84	suppressed
Januvia	Sitagliptin Phosphate	84	11
Lantus	Insulin Glargine,hum.Rec.Anlog	82	suppressed
Digoxin	Digoxin	80	suppressed
Tizanidine Hcl	Tizanidine Hcl	80	11
Cefpodoxime Proxetil	Cefpodoxime Proxetil	76	57
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	71	27
Benztropine Mesylate	Benztropine Mesylate	70	suppressed
Ropinirole Hcl	Ropinirole Hcl	68	suppressed
Albuterol Sulfate Hfa	Albuterol Sulfate	67	34
Tolterodine Tartrate Er	Tolterodine Tartrate	67	suppressed
Verapamil Er	Verapamil Hcl	66	suppressed
Calcitriol	Calcitriol	65	suppressed
Ursodiol	Ursodiol	65	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	63	11
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	63	suppressed
Paroxetine Hcl	Paroxetine Hcl	62	suppressed
Farxiga	Dapagliflozin Propanediol	61	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	60	suppressed
Trulicity	Dulaglutide	60	suppressed
Lactulose	Lactulose	59	16
Amantadine	Amantadine Hcl	58	suppressed
Sevelamer Carbonate	Sevelamer Carbonate	58	suppressed
Galantamine Hbr	Galantamine Hbr	57	suppressed
Diclofenac Sodium	Diclofenac Sodium	56	17
Amitriptyline Hcl	Amitriptyline Hcl	55	suppressed
Cyclosporine	Cyclosporine	55	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	55	16
Divalproex Sodium Er	Divalproex Sodium	55	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	55	12
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	54	11
Methocarbamol	Methocarbamol	53	suppressed
Alendronate Sodium	Alendronate Sodium	52	suppressed
Atropine Sulfate	Atropine Sulfate	52	13
Carbidopa-Levodopa Er	Carbidopa/Levodopa	49	suppressed
Cephalexin	Cephalexin	49	22
Albuterol Sulfate	Albuterol Sulfate	48	17
Haloperidol	Haloperidol	48	suppressed
Lovastatin	Lovastatin	47	suppressed
Lansoprazole	Lansoprazole	44	suppressed
Felodipine Er	Felodipine	41	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	41	suppressed
Breo Ellipta	Fluticasone/Vilanterol	40	suppressed
Fenofibrate	Fenofibrate	40	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	39	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	38	12
Desvenlafaxine Succinate Er	Desvenlafaxine Succinate	37	suppressed
Labetalol Hcl	Labetalol Hcl	37	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	37	suppressed
Verapamil Hcl	Verapamil Hcl	36	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	35	29
Enalapril Maleate	Enalapril Maleate	35	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	35	suppressed
Meclizine Hcl	Meclizine Hcl	35	13
Raloxifene Hcl	Raloxifene Hcl	35	suppressed
Bumetanide	Bumetanide	34	suppressed
Folic Acid	Folic Acid	34	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	34	suppressed
Humalog	Insulin Lispro	33	11
Propranolol Hcl Er	Propranolol Hcl	33	suppressed
Valacyclovir	Valacyclovir Hcl	33	suppressed
Valproic Acid	Valproic Acid (As Sodium Salt)	33	suppressed
Quetiapine Fumarate Er	Quetiapine Fumarate	32	suppressed
Colchicine	Colchicine	31	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	31	suppressed
Levofloxacin	Levofloxacin	31	23
Propranolol Hcl	Propranolol Hcl	31	suppressed
Prazosin Hcl	Prazosin Hcl	30	suppressed
Anastrozole	Anastrozole	29	suppressed
Chlorpromazine Hcl	Chlorpromazine Hcl	29	suppressed
Clonidine Hcl	Clonidine Hcl	28	suppressed
Xifaxan	Rifaximin	28	suppressed
Enoxaparin Sodium	Enoxaparin Sodium	27	11
Methimazole	Methimazole	27	suppressed
Cholestyramine	Cholestyramine (With Sugar)	26	suppressed
Azithromycin	Azithromycin	25	18
Methenamine Hippurate	Methenamine Hippurate	25	suppressed
Naltrexone Hcl	Naltrexone Hcl	25	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	24	suppressed
Diltiazem 24hr Er (La)	Diltiazem Hcl	24	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	24	20
Levemir	Insulin Detemir	24	suppressed
Solifenacin Succinate	Solifenacin Succinate	24	suppressed
Ventolin Hfa	Albuterol Sulfate	24	suppressed
Fluticasone-Vilanterol	Fluticasone/Vilanterol	23	suppressed
Humalog Kwikpen U-100	Insulin Lispro	23	suppressed
Ibuprofen	Ibuprofen	23	suppressed
Lidocaine	Lidocaine	23	12
Meloxicam	Meloxicam	23	suppressed
Abacavir	Abacavir Sulfate	22	suppressed
Acyclovir	Acyclovir	22	suppressed
Constulose	Lactulose	22	suppressed
Daptomycin	Daptomycin	22	suppressed
Darunavir	Darunavir	22	suppressed
Oxcarbazepine	Oxcarbazepine	22	suppressed
Sotalol	Sotalol Hcl	22	suppressed
Nyamyc	Nystatin	21	suppressed
Nystatin	Nystatin	21	14
Doxycycline Monohydrate	Doxycycline Monohydrate	20	suppressed
Rivastigmine	Rivastigmine	20	suppressed
Spiriva Handihaler	Tiotropium Bromide	20	suppressed
Timolol Maleate	Timolol Maleate	20	suppressed
Trospium Chloride	Trospium Chloride	20	suppressed
Doxepin Hcl	Doxepin Hcl	19	suppressed
Jantoven	Warfarin Sodium	19	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	19	11
Prednisolone Acetate	Prednisolone Acetate	19	suppressed
Ramelteon	Ramelteon	19	suppressed
Dexlansoprazole Dr	Dexlansoprazole	18	suppressed
Humulin 70-30	Insulin Nph Hum/Reg Insulin Hm	18	suppressed
Mupirocin	Mupirocin	18	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	18	suppressed
Terazosin Hcl	Terazosin Hcl	18	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	18	suppressed
Amoxicillin	Amoxicillin	17	12
Letrozole	Letrozole	17	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	16	suppressed
Metronidazole	Metronidazole	16	suppressed
Carbamazepine	Carbamazepine	15	suppressed
Dorzolamide-Timolol	Dorzolamide Hcl/Timolol Maleat	15	suppressed
Fluvoxamine Maleate	Fluvoxamine Maleate	15	suppressed
Humulin N Kwikpen	Insulin Nph Human Isophane	15	suppressed
Hydroxyurea	Hydroxyurea	15	suppressed
Olanzapine Odt	Olanzapine	15	suppressed
Vancomycin Hcl	Vancomycin Hcl	15	suppressed
Autoshield Duo Pen Needle	Pen Needle,dual Safety,diabetc	14	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	14	suppressed
Diltiazem Hcl	Diltiazem Hcl	14	suppressed
Erythromycin	Erythromycin Base	14	suppressed
Hydrochlorothiazide	Hydrochlorothiazide	14	suppressed
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	14	suppressed
Paliperidone Er	Paliperidone	14	suppressed
Synthroid	Levothyroxine Sodium	14	suppressed
Cefadroxil	Cefadroxil	13	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	13	suppressed
Ertapenem	Ertapenem Sodium	13	suppressed
Humalog Mix 75-25	Insulin Lispro Protamin/Lispro	13	suppressed
Humalog Mix 75-25 Kwikpen	Insulin Lispro Protamin/Lispro	13	suppressed
Insulin Lispro	Insulin Lispro	13	suppressed
Sotalol Af	Sotalol Hcl	13	suppressed
Symbicort	Budesonide/Formoterol Fumarate	13	suppressed
Benazepril Hcl	Benazepril Hcl	12	suppressed
Calcitonin-Salmon	Calcitonin,salmon,synthetic	12	suppressed
Ceftriaxone	Ceftriaxone Sodium	12	suppressed
Chlorhexidine Gluconate	Chlorhexidine Gluconate	12	suppressed
Dupixent Syringe	Dupilumab	12	suppressed
Entacapone	Entacapone	12	suppressed
Lithium Carbonate	Lithium Carbonate	12	suppressed
Pyridostigmine Bromide	Pyridostigmine Bromide	12	suppressed
Rasagiline Mesylate	Rasagiline Mesylate	12	suppressed
Rivastigmine	Rivastigmine Tartrate	12	suppressed
Selegiline Hcl	Selegiline Hcl	12	suppressed
Tacrolimus	Tacrolimus	12	suppressed
Trihexyphenidyl Hcl	Trihexyphenidyl Hcl	12	suppressed
Fenofibrate	Fenofibrate,micronized	11	suppressed
Invega Sustenna	Paliperidone Palmitate	11	suppressed
Lidocaine Hcl	Lidocaine Hcl	11	suppressed
Methotrexate	Methotrexate Sodium	11	suppressed
Sevelamer Hcl	Sevelamer Hcl	11	suppressed
Spiriva Respimat	Tiotropium Bromide	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