Healthcare provider profile · identity verified

Don Nguyen

Geriatric Medicine · HOUSTON, TX · NPI 1720344617

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	1110	191
Eliquis	Apixaban	575	72
Gabapentin	Gabapentin	544	101
Levothyroxine Sodium	Levothyroxine Sodium	385	89
Furosemide	Furosemide	369	82
Jardiance	Empagliflozin	347	28
Amlodipine Besylate	Amlodipine Besylate	304	79
Tamsulosin Hcl	Tamsulosin Hcl	279	69
Metoprolol Succinate	Metoprolol Succinate	263	77
Quetiapine Fumarate	Quetiapine Fumarate	255	61
Pantoprazole Sodium	Pantoprazole Sodium	219	56
Metformin Hcl	Metformin Hcl	218	41
Lisinopril	Lisinopril	212	52
Potassium Chloride	Potassium Chloride	211	49
Carvedilol	Carvedilol	203	43
Ondansetron Odt	Ondansetron	203	98
Duloxetine Hcl	Duloxetine Hcl	202	39
Mirtazapine	Mirtazapine	202	41
Trazodone Hcl	Trazodone Hcl	202	65
Xarelto	Rivaroxaban	201	30
Metoprolol Tartrate	Metoprolol Tartrate	185	41
Losartan Potassium	Losartan Potassium	181	47
Baclofen	Baclofen	172	25
Sertraline Hcl	Sertraline Hcl	167	40
Omeprazole	Omeprazole	151	45
Torsemide	Torsemide	140	25
Clopidogrel	Clopidogrel Bisulfate	133	30
Famotidine	Famotidine	133	33
Finasteride	Finasteride	133	30
Insulin Lispro Kwikpen U-100	Insulin Lispro	129	28
Chlorhexidine Gluconate	Chlorhexidine Gluconate	127	22
Spironolactone	Spironolactone	124	20
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	119	27
Buspirone Hcl	Buspirone Hcl	117	20
Levetiracetam	Levetiracetam	112	20
Warfarin Sodium	Warfarin Sodium	107	suppressed
Albuterol Sulfate Hfa	Albuterol Sulfate	102	41
Hydralazine Hcl	Hydralazine Hcl	100	27
Risperidone	Risperidone	95	16
Escitalopram Oxalate	Escitalopram Oxalate	94	19
Allopurinol	Allopurinol	92	22
Memantine Hcl	Memantine Hcl	90	18
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	86	18
Donepezil Hcl	Donepezil Hcl	82	16
Midodrine Hcl	Midodrine Hcl	82	19
Divalproex Sodium	Divalproex Sodium	81	15
Morphine Sulfate	Morphine Sulfate	78	74
Fluoxetine Hcl	Fluoxetine Hcl	73	20
Tizanidine Hcl	Tizanidine Hcl	71	14
Alendronate Sodium	Alendronate Sodium	70	12
Prednisone	Prednisone	68	24
Latanoprost	Latanoprost	66	18
Isosorbide Mononitrate Er	Isosorbide Mononitrate	65	14
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	64	19
Trulicity	Dulaglutide	63	12
Aripiprazole	Aripiprazole	62	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	60	15
Lorazepam	Lorazepam	60	57
Oxycodone Hcl	Oxycodone Hcl	59	26
Enulose	Lactulose	58	suppressed
Metformin Hcl Er	Metformin Hcl	58	12
Montelukast Sodium	Montelukast Sodium	58	14
Citalopram Hbr	Citalopram Hydrobromide	57	17
Nystatin	Nystatin	56	25
Haloperidol Lactate	Haloperidol Lactate	54	50
Ondansetron Hcl	Ondansetron Hcl	54	28
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	51	21
Hydrochlorothiazide	Hydrochlorothiazide	49	12
Incruse Ellipta	Umeclidinium Bromide	48	suppressed
Myrbetriq	Mirabegron	48	suppressed
Fluticasone Propionate	Fluticasone Propionate	47	17
Bupropion Xl	Bupropion Hcl	46	suppressed
Cephalexin	Cephalexin	44	22
Doxycycline Hyclate	Doxycycline Hyclate	44	28
Oxybutynin Chloride	Oxybutynin Chloride	44	suppressed
Ropinirole Hcl	Ropinirole Hcl	44	suppressed
Amiodarone Hcl	Amiodarone Hcl	43	11
Diclofenac Sodium	Diclofenac Sodium	43	21
Venlafaxine Hcl Er	Venlafaxine Hcl	43	suppressed
Propranolol Hcl	Propranolol Hcl	42	suppressed
Januvia	Sitagliptin Phosphate	41	suppressed
Methocarbamol	Methocarbamol	41	13
Hydroxyzine Hcl	Hydroxyzine Hcl	40	13
Entresto	Sacubitril/Valsartan	39	suppressed
Spiriva Respimat	Tiotropium Bromide	39	suppressed
Digoxin	Digoxin	38	suppressed
Lovastatin	Lovastatin	36	suppressed
Simvastatin	Simvastatin	36	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	36	28
Rivastigmine	Rivastigmine Tartrate	34	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	32	24
Bumetanide	Bumetanide	30	suppressed
Hydrocortisone	Hydrocortisone	30	12
Wixela Inhub	Fluticasone Propion/Salmeterol	29	suppressed
Breo Ellipta	Fluticasone/Vilanterol	27	suppressed
Enoxaparin Sodium	Enoxaparin Sodium	27	suppressed
Haloperidol	Haloperidol	27	23
Olanzapine	Olanzapine	27	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	27	suppressed
Sevelamer Carbonate	Sevelamer Carbonate	27	suppressed
Timolol Maleate	Timolol Maleate	26	suppressed
Nitroglycerin	Nitroglycerin	25	13
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	24	suppressed
Linzess	Linaclotide	24	suppressed
Metolazone	Metolazone	24	suppressed
Sulfasalazine	Sulfasalazine	24	suppressed
Colchicine	Colchicine	23	suppressed
Glipizide	Glipizide	23	suppressed
Lidocaine	Lidocaine	23	suppressed
Pravastatin Sodium	Pravastatin Sodium	23	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	23	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	23	suppressed
Cefdinir	Cefdinir	22	13
Lactulose	Lactulose	22	suppressed
Neupro	Rotigotine	22	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	22	suppressed
Atenolol	Atenolol	21	suppressed
Clonidine	Clonidine	21	suppressed
Sodium Chloride	0.9 % Sodium Chloride	21	15
Zonisamide	Zonisamide	20	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	19	suppressed
Budesonide	Budesonide	19	suppressed
Gemtesa	Vibegron	19	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	19	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	19	suppressed
Carbidopa-Levodopa Er	Carbidopa/Levodopa	18	suppressed
Creon	Lipase/Protease/Amylase	18	suppressed
Ezetimibe	Ezetimibe	18	suppressed
Prazosin Hcl	Prazosin Hcl	18	suppressed
Ranolazine Er	Ranolazine	18	suppressed
Spiriva Handihaler	Tiotropium Bromide	18	suppressed
Lansoprazole	Lansoprazole	17	suppressed
Liothyronine Sodium	Liothyronine Sodium	17	suppressed
Symbicort	Budesonide/Formoterol Fumarate	17	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	16	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	16	suppressed
Fludrocortisone Acetate	Fludrocortisone Acetate	16	suppressed
Xifaxan	Rifaximin	16	suppressed
Amoxicillin	Amoxicillin	15	suppressed
Anastrozole	Anastrozole	15	suppressed
Bethanechol Chloride	Bethanechol Chloride	15	suppressed
Bupropion Hcl	Bupropion Hcl	15	suppressed
Bupropion Hcl Sr	Bupropion Hcl	15	suppressed
Carbamazepine Er	Carbamazepine	15	suppressed
Clonidine Hcl	Clonidine Hcl	15	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	15	suppressed
Paroxetine Hcl	Paroxetine Hcl	15	suppressed
Prednisolone Acetate	Prednisolone Acetate	15	suppressed
Primidone	Primidone	15	suppressed
Atropine Sulfate	Atropine Sulfate	14	suppressed
Lidocaine Hcl	Lidocaine Hcl	14	11
Lorazepam Intensol	Lorazepam	14	11
Nitroglycerin Patch	Nitroglycerin	14	suppressed
Olanzapine Odt	Olanzapine	14	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	14	suppressed
Renacidin	Citric Ac/Gluconolact/Mag Carb	14	suppressed
Topiramate	Topiramate	14	suppressed
Ziprasidone Hcl	Ziprasidone Hcl	14	suppressed
Ammonium Lactate	Ammonium Lactate	13	suppressed
Benazepril Hcl	Benazepril Hcl	13	suppressed
Ceftriaxone	Ceftriaxone Sodium	13	suppressed
Hydromorphone Hcl	Hydromorphone Hcl	13	11
Insulin Aspart Flexpen	Insulin Aspart	13	suppressed
Invega Sustenna	Paliperidone Palmitate	13	suppressed
Lamotrigine	Lamotrigine	13	suppressed
Metronidazole	Metronidazole	13	suppressed
Phenytoin	Phenytoin	13	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	12	11
Benztropine Mesylate	Benztropine Mesylate	12	suppressed
Breztri Aerosphere	Budesonide/Glycopyr/Formoterol	12	suppressed
Calcium Acetate	Calcium Acetate	12	suppressed
Fentanyl	Fentanyl	12	suppressed
Indapamide	Indapamide	12	suppressed
Invokana	Canagliflozin	12	suppressed
Lokelma	Sodium Zirconium Cyclosilicate	12	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	12	suppressed
Rosuvastatin Calcium	Rosuvastatin Calcium	12	suppressed
Dexamethasone	Dexamethasone	11	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	11	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	11	suppressed
Erythromycin	Erythromycin Base	11	suppressed
Fluconazole	Fluconazole	11	suppressed
Scopolamine	Scopolamine	11	suppressed
Tradjenta	Linagliptin	11	suppressed
Vascepa	Icosapent Ethyl	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