Healthcare provider profile · identity verified

Diddarjit Grewal, M.D.

Internal Medicine · ROCHESTER, NY · NPI 1912934647

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	1207	365
Lisinopril	Lisinopril	538	159
Hydrochlorothiazide	Hydrochlorothiazide	515	157
Amlodipine Besylate	Amlodipine Besylate	513	164
Omeprazole	Omeprazole	436	148
Levothyroxine Sodium	Levothyroxine Sodium	415	129
Losartan Potassium	Losartan Potassium	378	118
Gabapentin	Gabapentin	294	99
Metoprolol Succinate	Metoprolol Succinate	284	84
Alendronate Sodium	Alendronate Sodium	282	93
Pantoprazole Sodium	Pantoprazole Sodium	226	78
Metformin Hcl	Metformin Hcl	214	73
Rosuvastatin Calcium	Rosuvastatin Calcium	180	54
Fluticasone Propionate	Fluticasone Propionate	171	74
Zolpidem Tartrate	Zolpidem Tartrate	170	23
Citalopram Hbr	Citalopram Hydrobromide	162	52
Furosemide	Furosemide	161	50
Simvastatin	Simvastatin	158	53
Famotidine	Famotidine	155	61
Albuterol Sulfate Hfa	Albuterol Sulfate	148	66
Duloxetine Hcl	Duloxetine Hcl	144	42
Meloxicam	Meloxicam	140	57
Sertraline Hcl	Sertraline Hcl	130	40
Chlorthalidone	Chlorthalidone	129	41
Trazodone Hcl	Trazodone Hcl	126	48
Spironolactone	Spironolactone	122	40
Ozempic	Semaglutide	121	23
Eliquis	Apixaban	108	34
Alprazolam	Alprazolam	105	22
Metoprolol Tartrate	Metoprolol Tartrate	105	38
Ezetimibe	Ezetimibe	101	33
Escitalopram Oxalate	Escitalopram Oxalate	99	32
Glimepiride	Glimepiride	97	33
Lovastatin	Lovastatin	80	24
Jardiance	Empagliflozin	79	24
Bupropion Xl	Bupropion Hcl	74	22
Atenolol	Atenolol	68	22
Trulicity	Dulaglutide	67	12
Carvedilol	Carvedilol	66	22
Pregabalin	Pregabalin	66	17
Allopurinol	Allopurinol	65	22
Tramadol Hcl	Tramadol Hcl	65	19
Terazosin Hcl	Terazosin Hcl	64	18
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	61	22
Venlafaxine Hcl Er	Venlafaxine Hcl	61	19
Lorazepam	Lorazepam	60	17
Mirtazapine	Mirtazapine	60	17
Fluoxetine Hcl	Fluoxetine Hcl	56	16
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	56	suppressed
Clonidine Hcl	Clonidine Hcl	55	17
Ipratropium Bromide	Ipratropium Bromide	54	13
Potassium Chloride	Potassium Chloride	54	17
Tamsulosin Hcl	Tamsulosin Hcl	54	20
Torsemide	Torsemide	53	21
Warfarin Sodium	Warfarin Sodium	53	15
Metformin Hcl Er	Metformin Hcl	52	24
Pravastatin Sodium	Pravastatin Sodium	52	20
Clopidogrel	Clopidogrel Bisulfate	50	17
Hydralazine Hcl	Hydralazine Hcl	50	12
Paroxetine Hcl	Paroxetine Hcl	50	15
Rybelsus	Semaglutide	49	11
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	47	15
Enalapril Maleate	Enalapril Maleate	46	14
Glipizide	Glipizide	46	16
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	46	suppressed
Buspirone Hcl	Buspirone Hcl	43	19
Irbesartan	Irbesartan	43	suppressed
Montelukast Sodium	Montelukast Sodium	43	suppressed
Finasteride	Finasteride	39	11
Prednisone	Prednisone	39	22
Isosorbide Mononitrate Er	Isosorbide Mononitrate	37	suppressed
Diazepam	Diazepam	36	14
Esomeprazole Magnesium	Esomeprazole Magnesium	36	suppressed
Lansoprazole	Lansoprazole	36	12
Synthroid	Levothyroxine Sodium	36	14
Ondansetron Hcl	Ondansetron Hcl	35	11
Tizanidine Hcl	Tizanidine Hcl	35	16
Ketoconazole	Ketoconazole	34	22
Quetiapine Fumarate	Quetiapine Fumarate	33	suppressed
Oxycodone Hcl	Oxycodone Hcl	31	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	30	suppressed
Clonazepam	Clonazepam	29	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	29	12
Hydroxyzine Hcl	Hydroxyzine Hcl	29	15
Naproxen	Naproxen	29	16
Cephalexin	Cephalexin	28	18
Azelastine Hcl	Azelastine Hcl	27	12
Levetiracetam	Levetiracetam	27	suppressed
Meclizine Hcl	Meclizine Hcl	27	15
Diclofenac Sodium	Diclofenac Sodium	26	13
Mounjaro	Tirzepatide	26	suppressed
Propranolol Hcl	Propranolol Hcl	25	suppressed
Valacyclovir	Valacyclovir Hcl	25	17
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	24	15
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	24	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	24	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	23	suppressed
Aripiprazole	Aripiprazole	23	suppressed
Celecoxib	Celecoxib	22	11
Triamcinolone Acetonide	Triamcinolone Acetonide	22	11
Valsartan	Valsartan	22	suppressed
Eplerenone	Eplerenone	21	suppressed
Baclofen	Baclofen	20	14
Fenofibrate	Fenofibrate Nanocrystallized	20	suppressed
Gemfibrozil	Gemfibrozil	20	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	20	16
Xarelto	Rivaroxaban	20	suppressed
Benazepril Hcl	Benazepril Hcl	19	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	19	suppressed
Fentanyl	Fentanyl	19	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	19	suppressed
Ropinirole Hcl	Ropinirole Hcl	19	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	18	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	17	12
Felodipine Er	Felodipine	17	suppressed
Glipizide Er	Glipizide	17	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	17	suppressed
Propranolol Hcl Er	Propranolol Hcl	17	suppressed
Unifine Pentips Plus	Pen Needle, Diabetic	17	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	16	suppressed
Bupropion Hcl Sr	Bupropion Hcl	16	suppressed
Mometasone Furoate	Mometasone Furoate	16	12
Rizatriptan	Rizatriptan Benzoate	16	suppressed
Amoxicillin	Amoxicillin	15	14
Humalog Kwikpen U-100	Insulin Lispro	15	suppressed
Morphine Sulfate Er	Morphine Sulfate	15	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	15	suppressed
Ramipril	Ramipril	15	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	15	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	15	suppressed
Zolpidem Tartrate Er	Zolpidem Tartrate	15	suppressed
Incruse Ellipta	Umeclidinium Bromide	14	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	14	suppressed
Spironolactone-Hctz	Spironolact/Hydrochlorothiazid	14	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	14	suppressed
Vascepa	Icosapent Ethyl	14	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	13	suppressed
Diclofenac Potassium	Diclofenac Potassium	13	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	13	suppressed
Humulin 70/30 Kwikpen	Insulin Nph Hum/Reg Insulin Hm	13	suppressed
Icosapent Ethyl	Icosapent Ethyl	13	suppressed
Januvia	Sitagliptin Phosphate	13	suppressed
Labetalol Hcl	Labetalol Hcl	13	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	13	suppressed
Oxycontin	Oxycodone Hcl	13	suppressed
Ammonium Lactate	Ammonium Lactate	12	suppressed
Entresto	Sacubitril/Valsartan	12	suppressed
Fluconazole	Fluconazole	12	suppressed
Nystatin	Nystatin	12	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	12	suppressed
Verapamil Er	Verapamil Hcl	12	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	11	suppressed
Arnuity Ellipta	Fluticasone Furoate	11	suppressed
Candesartan Cilexetil	Candesartan Cilexetil	11	suppressed
Cimetidine	Cimetidine	11	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	11	suppressed
Rexulti	Brexpiprazole	11	suppressed
Triazolam	Triazolam	11	suppressed
Unifine Pentips	Pen Needle, Diabetic	11	suppressed
Ventolin Hfa	Albuterol Sulfate	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