Healthcare provider profile · identity verified

William Wang, D.O.

Internal Medicine · WHITTIER, CA · NPI 1508213646

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	1073	473
Amlodipine Besylate	Amlodipine Besylate	653	284
Levothyroxine Sodium	Levothyroxine Sodium	626	264
Lisinopril	Lisinopril	604	286
Losartan Potassium	Losartan Potassium	515	241
Metformin Hcl	Metformin Hcl	367	177
Rosuvastatin Calcium	Rosuvastatin Calcium	328	159
Hydrochlorothiazide	Hydrochlorothiazide	284	128
Simvastatin	Simvastatin	280	124
Albuterol Sulfate Hfa	Albuterol Sulfate	244	75
Metoprolol Succinate	Metoprolol Succinate	238	113
Gabapentin	Gabapentin	235	117
Furosemide	Furosemide	206	103
Tamsulosin Hcl	Tamsulosin Hcl	197	87
Pantoprazole Sodium	Pantoprazole Sodium	194	113
Pravastatin Sodium	Pravastatin Sodium	175	83
Carvedilol	Carvedilol	172	68
Omeprazole	Omeprazole	172	93
Metoprolol Tartrate	Metoprolol Tartrate	171	78
Famotidine	Famotidine	166	74
Clopidogrel	Clopidogrel Bisulfate	147	61
Metformin Hcl Er	Metformin Hcl	147	64
Jardiance	Empagliflozin	139	53
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	117	59
Alendronate Sodium	Alendronate Sodium	116	56
Fluticasone Propionate	Fluticasone Propionate	110	46
Pioglitazone Hcl	Pioglitazone Hcl	109	53
Eliquis	Apixaban	106	30
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	103	92
Allopurinol	Allopurinol	93	50
Glimepiride	Glimepiride	93	39
Donepezil Hcl	Donepezil Hcl	92	42
Glipizide	Glipizide	91	42
Trazodone Hcl	Trazodone Hcl	91	47
Buspirone Hcl	Buspirone Hcl	90	36
Montelukast Sodium	Montelukast Sodium	84	47
Symbicort	Budesonide/Formoterol Fumarate	84	25
Tizanidine Hcl	Tizanidine Hcl	79	31
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	73	30
Sertraline Hcl	Sertraline Hcl	73	29
Duloxetine Hcl	Duloxetine Hcl	72	33
Potassium Chloride	Potassium Chloride	70	41
Irbesartan	Irbesartan	68	34
Glipizide Er	Glipizide	67	32
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	67	25
Escitalopram Oxalate	Escitalopram Oxalate	65	32
Ozempic	Semaglutide	63	26
Hydralazine Hcl	Hydralazine Hcl	62	32
Ezetimibe	Ezetimibe	58	29
Benazepril Hcl	Benazepril Hcl	56	22
Citalopram Hbr	Citalopram Hydrobromide	56	23
Finasteride	Finasteride	55	22
Azithromycin	Azithromycin	52	50
Prednisone	Prednisone	51	35
Memantine Hcl	Memantine Hcl	50	21
Valsartan	Valsartan	50	26
Tramadol Hcl	Tramadol Hcl	49	27
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	48	23
Oxybutynin Chloride Er	Oxybutynin Chloride	47	19
Vitamin D2	Ergocalciferol (Vitamin D2)	47	23
Meloxicam	Meloxicam	45	22
Spironolactone	Spironolactone	45	16
Hydroxyzine Hcl	Hydroxyzine Hcl	44	20
Oxybutynin Chloride	Oxybutynin Chloride	44	21
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	43	22
Atenolol	Atenolol	42	16
Ibuprofen	Ibuprofen	41	28
Irbesartan-Hydrochlorothiazide	Irbesartan/Hydrochlorothiazide	41	21
Diclofenac Sodium	Diclofenac Sodium	40	21
Lovastatin	Lovastatin	40	17
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	39	22
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	37	36
Farxiga	Dapagliflozin Propanediol	36	12
Isosorbide Mononitrate Er	Isosorbide Mononitrate	35	19
Clonidine Hcl	Clonidine Hcl	34	16
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	34	suppressed
Ropinirole Hcl	Ropinirole Hcl	34	13
Fluoxetine Hcl	Fluoxetine Hcl	33	12
Januvia	Sitagliptin Phosphate	33	12
Nifedipine Er	Nifedipine	33	16
Bupropion Hcl Sr	Bupropion Hcl	32	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	32	20
Ondansetron Hcl	Ondansetron Hcl	32	27
Paxlovid	Nirmatrelvir/Ritonavir	32	32
Triamcinolone Acetonide	Triamcinolone Acetonide	32	22
Baclofen	Baclofen	31	24
Paroxetine Hcl	Paroxetine Hcl	31	12
Esomeprazole Magnesium	Esomeprazole Magnesium	30	16
Nitroglycerin	Nitroglycerin	30	14
Trulicity	Dulaglutide	30	18
Breztri Aerosphere	Budesonide/Glycopyr/Formoterol	29	suppressed
Bydureon Bcise	Exenatide Microspheres	29	11
Ciprofloxacin Hcl	Ciprofloxacin Hcl	28	27
Celecoxib	Celecoxib	27	19
Meclizine Hcl	Meclizine Hcl	26	suppressed
Topiramate	Topiramate	26	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	25	19
Alcohol Prep Pads	Alcohol Antiseptic Pads	25	14
Doxazosin Mesylate	Doxazosin Mesylate	25	suppressed
Myrbetriq	Mirabegron	25	13
Alprazolam	Alprazolam	23	17
Mounjaro	Tirzepatide	23	12
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	23	23
Propranolol Hcl	Propranolol Hcl	23	suppressed
Ramipril	Ramipril	23	12
Amitriptyline Hcl	Amitriptyline Hcl	22	suppressed
Enalapril Maleate	Enalapril Maleate	22	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	22	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	21	suppressed
Levetiracetam	Levetiracetam	21	11
Olmesartan Medoxomil	Olmesartan Medoxomil	21	suppressed
Prazosin Hcl	Prazosin Hcl	21	suppressed
Vascepa	Icosapent Ethyl	21	suppressed
Latanoprost	Latanoprost	20	suppressed
Fenofibrate	Fenofibrate	19	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	18	suppressed
Lidocaine	Lidocaine	18	suppressed
Linzess	Linaclotide	18	suppressed
Rybelsus	Semaglutide	18	suppressed
Estradiol	Estradiol	17	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	17	suppressed
Solifenacin Succinate	Solifenacin Succinate	17	suppressed
Benazepril-Hydrochlorothiazide	Benazepril/Hydrochlorothiazide	16	suppressed
Diltiazem 12hr Er	Diltiazem Hcl	16	suppressed
Humalog Kwikpen U-100	Insulin Lispro	16	suppressed
Levemir Flexpen	Insulin Detemir	16	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	16	suppressed
Warfarin Sodium	Warfarin Sodium	16	suppressed
Folic Acid	Folic Acid	15	suppressed
Labetalol Hcl	Labetalol Hcl	15	suppressed
Toujeo Max Solostar	Insulin Glargine,hum.Rec.Anlog	15	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	15	suppressed
Diltiazem Hcl	Diltiazem Hcl	14	suppressed
Mirtazapine	Mirtazapine	14	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	14	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	14	suppressed
Amiodarone Hcl	Amiodarone Hcl	13	suppressed
Amoxicillin	Amoxicillin	13	12
Lactulose	Lactulose	13	suppressed
Lagevrio (Eua)	Molnupiravir	13	13
Lansoprazole	Lansoprazole	13	suppressed
Sildenafil Citrate	Sildenafil Citrate	13	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	13	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	13	suppressed
Ventolin Hfa	Albuterol Sulfate	13	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	12	suppressed
Methotrexate	Methotrexate Sodium	12	suppressed
Naproxen	Naproxen	12	suppressed
Nystatin	Nystatin	12	suppressed
Ondansetron Odt	Ondansetron	12	suppressed
Rabeprazole Sodium	Rabeprazole Sodium	12	suppressed
Synthroid	Levothyroxine Sodium	12	suppressed
Travoprost	Travoprost	12	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	12	suppressed
Brimonidine Tartrate	Brimonidine Tartrate	11	suppressed
Fluconazole	Fluconazole	11	suppressed
Levofloxacin	Levofloxacin	11	suppressed
Livalo	Pitavastatin Calcium	11	suppressed
Promethazine Hcl	Promethazine Hcl	11	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	11	suppressed
Telmisartan	Telmisartan	11	suppressed
Temazepam	Temazepam	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