Healthcare provider profile · identity verified

Evadne Chi Ong, MD

Internal Medicine · JAMESTOWN, NY · NPI 1336391721

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	508	141
Levothyroxine Sodium	Levothyroxine Sodium	486	132
Amlodipine Besylate	Amlodipine Besylate	345	98
Omeprazole	Omeprazole	316	91
Rosuvastatin Calcium	Rosuvastatin Calcium	309	96
Lisinopril	Lisinopril	221	64
Famotidine	Famotidine	195	59
Metoprolol Succinate	Metoprolol Succinate	187	57
Alendronate Sodium	Alendronate Sodium	186	56
Losartan Potassium	Losartan Potassium	185	52
Sertraline Hcl	Sertraline Hcl	181	55
Pravastatin Sodium	Pravastatin Sodium	167	50
Gabapentin	Gabapentin	160	56
Potassium Chloride	Potassium Chloride	159	46
Fluticasone Propionate	Fluticasone Propionate	158	69
Eliquis	Apixaban	153	43
Simvastatin	Simvastatin	142	38
Valsartan	Valsartan	141	42
Metformin Hcl	Metformin Hcl	135	34
Pantoprazole Sodium	Pantoprazole Sodium	126	37
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	123	34
Carvedilol	Carvedilol	122	35
Furosemide	Furosemide	105	46
Allopurinol	Allopurinol	104	29
Atenolol	Atenolol	99	25
Diclofenac Sodium	Diclofenac Sodium	97	37
Clopidogrel	Clopidogrel Bisulfate	95	25
Hydrochlorothiazide	Hydrochlorothiazide	92	28
Citalopram Hbr	Citalopram Hydrobromide	91	23
Tramadol Hcl	Tramadol Hcl	90	32
Metoprolol Tartrate	Metoprolol Tartrate	87	28
Prednisone	Prednisone	86	62
Ezetimibe	Ezetimibe	85	27
Montelukast Sodium	Montelukast Sodium	84	27
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	82	29
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	75	22
Trazodone Hcl	Trazodone Hcl	74	18
Pregabalin	Pregabalin	70	14
Metformin Hcl Er	Metformin Hcl	69	22
Albuterol Sulfate Hfa	Albuterol Sulfate	68	34
Spironolactone	Spironolactone	64	19
Venlafaxine Hcl Er	Venlafaxine Hcl	63	13
Jardiance	Empagliflozin	62	19
Lovastatin	Lovastatin	61	16
Clonidine Hcl	Clonidine Hcl	56	14
Ozempic	Semaglutide	52	18
Buspirone Hcl	Buspirone Hcl	51	14
Breo Ellipta	Fluticasone/Vilanterol	49	11
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	49	16
Synthroid	Levothyroxine Sodium	49	16
Lorazepam	Lorazepam	47	13
Xarelto	Rivaroxaban	47	suppressed
Alprazolam	Alprazolam	46	27
Escitalopram Oxalate	Escitalopram Oxalate	45	17
Fluoxetine Hcl	Fluoxetine Hcl	45	16
Oxycodone Hcl	Oxycodone Hcl	44	12
Zolpidem Tartrate	Zolpidem Tartrate	43	suppressed
Trulicity	Dulaglutide	42	suppressed
Irbesartan	Irbesartan	41	13
Paxlovid	Nirmatrelvir/Ritonavir	41	41
Bumetanide	Bumetanide	40	13
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	39	suppressed
Cephalexin	Cephalexin	38	21
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	38	14
Duloxetine Hcl	Duloxetine Hcl	37	13
Propranolol Hcl	Propranolol Hcl	37	suppressed
Meloxicam	Meloxicam	36	13
Desvenlafaxine Succinate Er	Desvenlafaxine Succinate	35	11
Donepezil Hcl	Donepezil Hcl	35	suppressed
Glipizide	Glipizide	35	12
Lansoprazole	Lansoprazole	34	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	34	suppressed
Nifedipine Er	Nifedipine	34	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	34	31
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	33	suppressed
Meclizine Hcl	Meclizine Hcl	33	17
Bisoprolol Fumarate	Bisoprolol Fumarate	31	12
Memantine Hcl	Memantine Hcl	31	suppressed
Enalapril Maleate	Enalapril Maleate	29	suppressed
Januvia	Sitagliptin Phosphate	29	suppressed
Hydralazine Hcl	Hydralazine Hcl	28	suppressed
Tamsulosin Hcl	Tamsulosin Hcl	28	suppressed
Mounjaro	Tirzepatide	27	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	26	26
Clonazepam	Clonazepam	25	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	25	24
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	25	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	24	suppressed
Glipizide Er	Glipizide	24	suppressed
Nystatin	Nystatin	24	14
Tizanidine Hcl	Tizanidine Hcl	24	12
Labetalol Hcl	Labetalol Hcl	22	suppressed
Warfarin Sodium	Warfarin Sodium	22	suppressed
Azithromycin	Azithromycin	21	20
Levetiracetam	Levetiracetam	21	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	21	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	20	suppressed
Myrbetriq	Mirabegron	20	suppressed
Verapamil Er	Verapamil Hcl	20	suppressed
Atenolol-Chlorthalidone	Atenolol/Chlorthalidone	19	suppressed
Benazepril Hcl	Benazepril Hcl	19	suppressed
Methylprednisolone	Methylprednisolone	19	17
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	19	suppressed
Paroxetine Hcl	Paroxetine Hcl	19	suppressed
Celecoxib	Celecoxib	18	suppressed
Gemfibrozil	Gemfibrozil	18	suppressed
Prolia	Denosumab	18	suppressed
Spironolactone-Hctz	Spironolact/Hydrochlorothiazid	18	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	17	suppressed
Klor-Con M20	Potassium Chloride	17	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	17	suppressed
Naproxen	Naproxen	16	suppressed
Amoxicillin	Amoxicillin	15	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	15	14
Folic Acid	Folic Acid	15	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	15	suppressed
Atrovent Hfa	Ipratropium Bromide	14	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	14	suppressed
Bupropion Hcl Sr	Bupropion Hcl	14	suppressed
Bupropion Xl	Bupropion Hcl	14	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	14	suppressed
Digoxin	Digoxin	14	suppressed
Propranolol Hcl Er	Propranolol Hcl	14	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	13	suppressed
Cefdinir	Cefdinir	13	12
Cefuroxime	Cefuroxime Axetil	13	12
Dabigatran Etexilate	Dabigatran Etexilate Mesylate	13	suppressed
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	13	suppressed
Mupirocin	Mupirocin	13	suppressed
Olanzapine	Olanzapine	13	suppressed
Mometasone Furoate	Mometasone Furoate	12	suppressed
Cartia Xt	Diltiazem Hcl	11	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	11	suppressed
Felodipine Er	Felodipine	11	suppressed
Loperamide	Loperamide Hcl	11	suppressed
Methocarbamol	Methocarbamol	11	suppressed
Misoprostol	Misoprostol	11	suppressed
Nitroglycerin	Nitroglycerin	11	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	11	suppressed
Trospium Chloride	Trospium Chloride	11	suppressed
Ultra-Fine Mini Pen Needle	Pen Needle, Diabetic	11	suppressed
Valacyclovir	Valacyclovir 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