Healthcare provider profile · identity verified

Frank H. Chen, MD

Family Practice · RIVERSIDE, CA · NPI 1477601458

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	622	219
Levothyroxine Sodium	Levothyroxine Sodium	598	193
Losartan Potassium	Losartan Potassium	520	184
Amlodipine Besylate	Amlodipine Besylate	454	171
Breyna	Budesonide/Formoterol Fumarate	343	139
Atenolol	Atenolol	281	99
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	252	89
Metformin Hcl Er	Metformin Hcl	249	98
Albuterol Sulfate Hfa	Albuterol Sulfate	245	87
Lisinopril	Lisinopril	239	84
Tamsulosin Hcl	Tamsulosin Hcl	238	86
Trazodone Hcl	Trazodone Hcl	234	63
Gabapentin	Gabapentin	224	86
Rosuvastatin Calcium	Rosuvastatin Calcium	216	86
Furosemide	Furosemide	215	73
Omeprazole	Omeprazole	208	85
Potassium Chloride	Potassium Chloride	201	69
Fluticasone Propionate	Fluticasone Propionate	187	63
Hydrochlorothiazide	Hydrochlorothiazide	164	64
Ibuprofen	Ibuprofen	161	58
Metoprolol Succinate	Metoprolol Succinate	147	53
Metoprolol Tartrate	Metoprolol Tartrate	146	57
Lorazepam	Lorazepam	145	23
Allopurinol	Allopurinol	141	54
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	139	34
Prednisone	Prednisone	130	85
Famotidine	Famotidine	129	43
Simvastatin	Simvastatin	126	52
Meloxicam	Meloxicam	102	39
Pradaxa	Dabigatran Etexilate Mesylate	93	32
Triamcinolone Acetonide	Triamcinolone Acetonide	90	40
Montelukast Sodium	Montelukast Sodium	88	40
Pantoprazole Sodium	Pantoprazole Sodium	88	36
Buprenorphine	Buprenorphine	86	20
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	84	66
Doxycycline Monohydrate	Doxycycline Monohydrate	79	42
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	78	30
Alvesco	Ciclesonide	77	20
Glipizide	Glipizide	75	28
Azelastine Hcl	Azelastine Hcl	74	34
Clopidogrel	Clopidogrel Bisulfate	74	25
Sertraline Hcl	Sertraline Hcl	74	28
Fluoxetine Hcl	Fluoxetine Hcl	73	26
Metformin Hcl	Metformin Hcl	73	25
Duloxetine Hcl	Duloxetine Hcl	70	20
Fluocinonide	Fluocinonide	69	31
Azithromycin	Azithromycin	65	54
Baclofen	Baclofen	65	15
Mirtazapine	Mirtazapine	65	12
Amoxicillin	Amoxicillin	63	40
Belbuca	Buprenorphine Hcl	62	14
Carvedilol	Carvedilol	61	22
Alendronate Sodium	Alendronate Sodium	58	16
Quetiapine Fumarate	Quetiapine Fumarate	54	14
Lovastatin	Lovastatin	53	18
Ciprofloxacin Hcl	Ciprofloxacin Hcl	52	29
Finasteride	Finasteride	49	12
Acyclovir	Acyclovir	47	23
Latanoprost	Latanoprost	46	12
Ropinirole Hcl	Ropinirole Hcl	46	suppressed
Pregabalin	Pregabalin	44	12
Alprazolam	Alprazolam	43	12
Acetaminophen-Codeine	Acetaminophen With Codeine	42	suppressed
Terazosin Hcl	Terazosin Hcl	40	17
Eliquis	Apixaban	39	16
Warfarin Sodium	Warfarin Sodium	38	14
Estradiol	Estradiol	35	12
Hydrocortisone	Hydrocortisone	35	20
Jardiance	Empagliflozin	35	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	33	12
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	32	13
Paxlovid	Nirmatrelvir/Ritonavir	32	32
Tadalafil	Tadalafil	32	suppressed
Hydralazine Hcl	Hydralazine Hcl	31	suppressed
Tramadol Hcl	Tramadol Hcl	30	suppressed
Citalopram Hbr	Citalopram Hydrobromide	29	11
Diazepam	Diazepam	28	suppressed
Pravastatin Sodium	Pravastatin Sodium	28	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	28	suppressed
Temazepam	Temazepam	28	suppressed
Asa-Butalb-Caffeine-Codeine	Codeine/Butalbital/Asa/Caffein	27	suppressed
Levetiracetam	Levetiracetam	27	suppressed
Neomycin-Polymyxin-Dexameth	Neomycin/Polymyxin B/Dexametha	27	18
Spiriva Respimat	Tiotropium Bromide	27	suppressed
Spironolactone	Spironolactone	27	11
Bupropion Xl	Bupropion Hcl	26	suppressed
Glimepiride	Glimepiride	26	suppressed
Fenofibrate	Fenofibrate	25	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	25	suppressed
Lactulose	Lactulose	25	suppressed
Ondansetron Hcl	Ondansetron Hcl	25	suppressed
Mupirocin	Mupirocin	23	14
Humulin N	Insulin Nph Human Isophane	22	suppressed
Propranolol Hcl	Propranolol Hcl	22	suppressed
Terbinafine Hcl	Terbinafine Hcl	22	16
Cyclosporine	Cyclosporine	21	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	21	suppressed
Metronidazole	Metronidazole	21	15
Oxycodone Hcl	Oxycodone Hcl	21	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	21	suppressed
Colchicine	Colchicine	20	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	20	suppressed
Nystatin	Nystatin	20	17
Tizanidine Hcl	Tizanidine Hcl	20	suppressed
Valacyclovir	Valacyclovir Hcl	20	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	19	13
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	19	suppressed
Donepezil Hcl	Donepezil Hcl	18	suppressed
Hydromorphone Hcl	Hydromorphone Hcl	18	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	18	suppressed
Calcitonin-Salmon	Calcitonin,salmon,synthetic	17	suppressed
Clonidine Hcl	Clonidine Hcl	17	suppressed
Ozempic	Semaglutide	17	suppressed
Clobetasol Propionate	Clobetasol Propionate	16	suppressed
Diltiazem 12hr Er	Diltiazem Hcl	16	suppressed
Nitroglycerin	Nitroglycerin	16	11
Morphine Sulfate Er	Morphine Sulfate	15	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	14	suppressed
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	14	suppressed
Veo Insulin Syringe	Syringe-Needle,insulin,0.5 Ml	14	suppressed
Xarelto	Rivaroxaban	14	suppressed
Zenpep	Lipase/Protease/Amylase	14	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	13	suppressed
Clonazepam	Clonazepam	13	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	13	suppressed
Topiramate	Topiramate	13	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	13	suppressed
Verapamil Er	Verapamil Hcl	13	suppressed
Cephalexin	Cephalexin	12	suppressed
Clindamycin Hcl	Clindamycin Hcl	12	suppressed
Lidocaine	Lidocaine	12	suppressed
Lidocaine Hcl Viscous	Lidocaine Hcl	12	suppressed
Nifedipine Er	Nifedipine	12	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	12	suppressed
Rivastigmine	Rivastigmine	12	suppressed
Amiodarone Hcl	Amiodarone Hcl	11	suppressed
Betamethasone Dipropionate	Betamethasone Dipropionate	11	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	11	suppressed
Digoxin	Digoxin	11	suppressed
Naproxen	Naproxen	11	suppressed
Ondansetron Odt	Ondansetron	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

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