Healthcare provider profile · identity verified

Roger L. Ong, MD

Internal Medicine · HARBOR CITY, CA · NPI 1881761799

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	430	199
Lisinopril	Lisinopril	277	115
Amlodipine Besylate	Amlodipine Besylate	263	132
Losartan Potassium	Losartan Potassium	230	96
Hydrochlorothiazide	Hydrochlorothiazide	173	65
Levothyroxine Sodium	Levothyroxine Sodium	171	80
Simvastatin	Simvastatin	156	63
Metformin Hcl	Metformin Hcl	152	66
Rosuvastatin Calcium	Rosuvastatin Calcium	147	66
Metoprolol Tartrate	Metoprolol Tartrate	128	51
Albuterol Sulfate Hfa	Albuterol Sulfate	123	64
Omeprazole	Omeprazole	116	60
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	109	48
Potassium Chloride	Potassium Chloride	104	39
Atenolol	Atenolol	99	42
Meloxicam	Meloxicam	95	46
Glipizide	Glipizide	84	39
Tamsulosin Hcl	Tamsulosin Hcl	78	38
Trazodone Hcl	Trazodone Hcl	77	25
Ibuprofen	Ibuprofen	72	29
Pantoprazole Sodium	Pantoprazole Sodium	65	22
Pradaxa	Dabigatran Etexilate Mesylate	63	22
Alendronate Sodium	Alendronate Sodium	61	25
Gabapentin	Gabapentin	58	31
Metformin Hcl Er	Metformin Hcl	56	31
Cephalexin	Cephalexin	55	54
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	52	25
Furosemide	Furosemide	51	22
Hydralazine Hcl	Hydralazine Hcl	50	24
Terazosin Hcl	Terazosin Hcl	47	23
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	44	13
Amoxicillin	Amoxicillin	42	30
Clopidogrel	Clopidogrel Bisulfate	41	21
Finasteride	Finasteride	35	14
Triamcinolone Acetonide	Triamcinolone Acetonide	35	24
Colchicine	Colchicine	34	18
Pravastatin Sodium	Pravastatin Sodium	34	12
Bisoprolol Fumarate	Bisoprolol Fumarate	33	17
Famotidine	Famotidine	33	16
Carvedilol	Carvedilol	32	12
Allopurinol	Allopurinol	31	19
Jardiance	Empagliflozin	31	13
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	30	14
Adacel Tdap	Diph,pertuss(Acell),tet Vac/Pf	27	27
Acyclovir	Acyclovir	26	14
Alvesco	Ciclesonide	26	14
Wixela Inhub	Fluticasone Propion/Salmeterol	26	12
Hydrocortisone	Hydrocortisone	25	15
Azelastine Hcl	Azelastine Hcl	24	suppressed
Ozempic	Semaglutide	24	12
Bupropion Xl	Bupropion Hcl	23	suppressed
Ezetimibe	Ezetimibe	23	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	23	suppressed
Lovastatin	Lovastatin	23	suppressed
Duloxetine Hcl	Duloxetine Hcl	22	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	21	21
Eliquis	Apixaban	21	suppressed
Humulin N Kwikpen	Insulin Nph Human Isophane	21	11
Citalopram Hbr	Citalopram Hydrobromide	20	11
Lorazepam	Lorazepam	19	11
Sertraline Hcl	Sertraline Hcl	19	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	19	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	19	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	18	12
Azithromycin	Azithromycin	18	18
Pioglitazone Hcl	Pioglitazone Hcl	18	suppressed
Acarbose	Acarbose	17	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	16	suppressed
Metronidazole	Metronidazole	16	suppressed
Potassium Citrate Er	Potassium Citrate	16	suppressed
Tramadol Hcl	Tramadol Hcl	16	suppressed
Victoza 2-Pak	Liraglutide	16	suppressed
Alprazolam	Alprazolam	15	suppressed
Chlorhexidine Gluconate	Chlorhexidine Gluconate	14	suppressed
Montelukast Sodium	Montelukast Sodium	14	suppressed
Prednisone	Prednisone	14	12
Humulin N	Insulin Nph Human Isophane	13	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	13	suppressed
Spironolactone	Spironolactone	13	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	12	suppressed
Mirtazapine	Mirtazapine	12	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	12	12
Ondansetron Odt	Ondansetron	12	11
Warfarin Sodium	Warfarin Sodium	12	suppressed
Neomycin-Polymyxin-Dexameth	Neomycin/Polymyxin B/Dexametha	11	11
Oxazepam	Oxazepam	11	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	11	suppressed
Progesterone	Progesterone, Micronized	11	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	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