Healthcare provider profile · identity verified

Yan Jun Chen, MD

Family Practice · TEMPLE CITY, CA · NPI 1023064250

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	762	217
Losartan Potassium	Losartan Potassium	287	77
Amlodipine Besylate	Amlodipine Besylate	257	77
Metformin Hcl	Metformin Hcl	247	72
Rosuvastatin Calcium	Rosuvastatin Calcium	176	55
Levothyroxine Sodium	Levothyroxine Sodium	174	44
Tamsulosin Hcl	Tamsulosin Hcl	171	54
Gabapentin	Gabapentin	147	46
Lisinopril	Lisinopril	133	37
Metoprolol Succinate	Metoprolol Succinate	133	37
Azithromycin	Azithromycin	126	89
Hydrochlorothiazide	Hydrochlorothiazide	126	40
Diclofenac Sodium	Diclofenac Sodium	115	38
Pantoprazole Sodium	Pantoprazole Sodium	109	36
Alprazolam	Alprazolam	107	21
Allopurinol	Allopurinol	102	32
Carvedilol	Carvedilol	99	33
Lorazepam	Lorazepam	96	27
Clopidogrel	Clopidogrel Bisulfate	94	27
Omeprazole	Omeprazole	88	26
Furosemide	Furosemide	86	33
Escitalopram Oxalate	Escitalopram Oxalate	85	21
Famotidine	Famotidine	85	30
Baclofen	Baclofen	79	31
Trazodone Hcl	Trazodone Hcl	79	28
Tramadol Hcl	Tramadol Hcl	75	28
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	74	23
Finasteride	Finasteride	73	21
Xarelto	Rivaroxaban	71	14
Alendronate Sodium	Alendronate Sodium	70	19
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	69	19
Metoprolol Tartrate	Metoprolol Tartrate	68	17
Simvastatin	Simvastatin	64	19
Eliquis	Apixaban	61	19
Prednisone	Prednisone	61	21
Sildenafil Citrate	Sildenafil Citrate	59	12
Chlorthalidone	Chlorthalidone	56	18
Fluticasone Propionate	Fluticasone Propionate	54	23
Triamcinolone Acetonide	Triamcinolone Acetonide	54	28
Benazepril Hcl	Benazepril Hcl	51	14
Valsartan	Valsartan	48	15
Albuterol Sulfate Hfa	Albuterol Sulfate	47	18
Montelukast Sodium	Montelukast Sodium	47	16
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	45	11
Pravastatin Sodium	Pravastatin Sodium	45	15
Zolpidem Tartrate	Zolpidem Tartrate	44	15
Metformin Hcl Er	Metformin Hcl	43	13
Irbesartan	Irbesartan	41	suppressed
Jardiance	Empagliflozin	40	15
Lovastatin	Lovastatin	40	12
Atenolol	Atenolol	37	suppressed
Potassium Chloride	Potassium Chloride	36	13
Meclizine Hcl	Meclizine Hcl	35	16
Fluoxetine Hcl	Fluoxetine Hcl	34	suppressed
Diazepam	Diazepam	33	suppressed
Glipizide	Glipizide	33	11
Meloxicam	Meloxicam	33	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	33	33
Glimepiride	Glimepiride	31	suppressed
Mirtazapine	Mirtazapine	31	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	31	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	30	23
Duloxetine Hcl	Duloxetine Hcl	29	suppressed
Ezetimibe	Ezetimibe	29	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	29	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	29	suppressed
Amiodarone Hcl	Amiodarone Hcl	28	suppressed
Arnuity Ellipta	Fluticasone Furoate	27	suppressed
Sertraline Hcl	Sertraline Hcl	27	suppressed
Januvia	Sitagliptin Phosphate	26	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	26	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	26	suppressed
Synthroid	Levothyroxine Sodium	25	suppressed
Clonazepam	Clonazepam	23	suppressed
Donepezil Hcl	Donepezil Hcl	23	suppressed
Naproxen	Naproxen	23	suppressed
Nifedipine Er	Nifedipine	23	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	23	14
Doxycycline Hyclate	Doxycycline Hyclate	22	15
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	22	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	20	19
Citalopram Hbr	Citalopram Hydrobromide	20	suppressed
Clobetasol Propionate	Clobetasol Propionate	18	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	18	suppressed
Bupropion Xl	Bupropion Hcl	17	suppressed
Estradiol	Estradiol	17	suppressed
Pregabalin	Pregabalin	17	suppressed
Celecoxib	Celecoxib	16	suppressed
Ciclopirox	Ciclopirox	16	suppressed
Indapamide	Indapamide	16	suppressed
Temazepam	Temazepam	16	suppressed
Levetiracetam	Levetiracetam	15	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	15	suppressed
Telmisartan	Telmisartan	15	suppressed
Tradjenta	Linagliptin	15	suppressed
Acyclovir	Acyclovir	14	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	14	suppressed
Carisoprodol	Carisoprodol	14	suppressed
Fluocinonide	Fluocinonide	14	suppressed
Hydromorphone Hcl	Hydromorphone Hcl	14	suppressed
Lamotrigine	Lamotrigine	14	suppressed
Methocarbamol	Methocarbamol	14	suppressed
Ondansetron Hcl	Ondansetron Hcl	14	suppressed
Ondansetron Odt	Ondansetron	14	suppressed
Repaglinide	Repaglinide	14	suppressed
Spironolactone	Spironolactone	14	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	13	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	13	suppressed
Amoxicillin	Amoxicillin	13	11
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	13	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	13	suppressed
Farxiga	Dapagliflozin Propanediol	13	suppressed
Methylprednisolone	Methylprednisolone	13	12
Morphine Sulfate Er	Morphine Sulfate	13	suppressed
Sulfacetamide Sodium	Sulfacetamide Sodium	13	11
Topiramate	Topiramate	13	suppressed
Estradiol (Once Weekly)	Estradiol	12	suppressed
Gemfibrozil	Gemfibrozil	12	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	12	suppressed
Ketoconazole	Ketoconazole	12	suppressed
Methenamine Hippurate	Methenamine Hippurate	12	suppressed
Ropinirole Hcl	Ropinirole Hcl	12	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	12	suppressed
Enalapril Maleate	Enalapril Maleate	11	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	11	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	11	suppressed
Methadone Hcl	Methadone Hcl	11	suppressed
Percocet	Oxycodone Hcl/Acetaminophen	11	suppressed
Risedronate Sodium	Risedronate Sodium	11	suppressed
Solifenacin Succinate	Solifenacin Succinate	11	suppressed
Testosterone	Testosterone	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