Healthcare provider profile · identity verified

Tam Nhat Cung, DO

Family Practice · MCKINNEY, TX · NPI 1194012161

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	642	139
Gabapentin	Gabapentin	387	84
Levothyroxine Sodium	Levothyroxine Sodium	378	79
Amlodipine Besylate	Amlodipine Besylate	370	91
Eliquis	Apixaban	351	51
Trazodone Hcl	Trazodone Hcl	335	74
Furosemide	Furosemide	277	71
Mirtazapine	Mirtazapine	245	64
Carvedilol	Carvedilol	220	49
Tamsulosin Hcl	Tamsulosin Hcl	212	60
Lisinopril	Lisinopril	197	43
Potassium Chloride	Potassium Chloride	191	57
Metformin Hcl	Metformin Hcl	189	46
Metoprolol Tartrate	Metoprolol Tartrate	184	42
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	178	48
Donepezil Hcl	Donepezil Hcl	173	41
Divalproex Sodium	Divalproex Sodium	169	34
Losartan Potassium	Losartan Potassium	169	41
Prednisone	Prednisone	169	71
Sertraline Hcl	Sertraline Hcl	153	42
Pantoprazole Sodium	Pantoprazole Sodium	152	44
Levetiracetam	Levetiracetam	143	27
Memantine Hcl	Memantine Hcl	141	33
Hydralazine Hcl	Hydralazine Hcl	133	33
Quetiapine Fumarate	Quetiapine Fumarate	117	30
Famotidine	Famotidine	115	23
Metoprolol Succinate	Metoprolol Succinate	113	31
Tramadol Hcl	Tramadol Hcl	107	41
Lorazepam	Lorazepam	104	32
Clonazepam	Clonazepam	103	12
Duloxetine Hcl	Duloxetine Hcl	99	20
Clopidogrel	Clopidogrel Bisulfate	94	28
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	93	37
Finasteride	Finasteride	91	21
Omeprazole	Omeprazole	90	34
Ondansetron Hcl	Ondansetron Hcl	81	34
Risperidone	Risperidone	80	15
Citalopram Hbr	Citalopram Hydrobromide	79	22
Acetaminophen-Codeine	Acetaminophen With Codeine	74	20
Diclofenac Sodium	Diclofenac Sodium	73	23
Escitalopram Oxalate	Escitalopram Oxalate	73	22
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	71	23
Alprazolam	Alprazolam	66	17
Methocarbamol	Methocarbamol	65	19
Montelukast Sodium	Montelukast Sodium	62	20
Ibuprofen	Ibuprofen	60	26
Pravastatin Sodium	Pravastatin Sodium	58	12
Doxycycline Hyclate	Doxycycline Hyclate	54	30
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	52	36
Allopurinol	Allopurinol	50	14
Latanoprost	Latanoprost	49	15
Ciprofloxacin Hcl	Ciprofloxacin Hcl	48	34
Albuterol Sulfate Hfa	Albuterol Sulfate	47	25
Lactulose	Lactulose	47	12
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	45	34
Fluticasone Propionate	Fluticasone Propionate	45	16
Albuterol Sulfate	Albuterol Sulfate	43	18
Buspirone Hcl	Buspirone Hcl	43	18
Glipizide	Glipizide	43	13
Enulose	Lactulose	42	11
Fluoxetine Hcl	Fluoxetine Hcl	41	11
Ropinirole Hcl	Ropinirole Hcl	41	suppressed
Sucralfate	Sucralfate	41	suppressed
Baclofen	Baclofen	40	12
Rosuvastatin Calcium	Rosuvastatin Calcium	40	13
Xarelto	Rivaroxaban	40	suppressed
Dextrose 5%-0.45% Nacl	Dextrose 5 %-0.45 % Sod Chlord	39	20
Hydrochlorothiazide	Hydrochlorothiazide	39	11
Nifedipine Er	Nifedipine	39	14
Budesonide	Budesonide	38	suppressed
Sodium Chloride	0.9 % Sodium Chloride	38	15
Tizanidine Hcl	Tizanidine Hcl	38	suppressed
Amiodarone Hcl	Amiodarone Hcl	37	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	37	13
Hydroxyzine Hcl	Hydroxyzine Hcl	37	19
Oxybutynin Chloride Er	Oxybutynin Chloride	37	suppressed
Azithromycin	Azithromycin	36	28
Olanzapine	Olanzapine	36	12
Entresto	Sacubitril/Valsartan	35	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	35	17
Levemir Flexpen	Insulin Detemir	34	11
Spironolactone	Spironolactone	34	12
Autoshield Duo Pen Needle	Pen Needle,dual Safety,diabetc	33	12
Jardiance	Empagliflozin	33	suppressed
Midodrine Hcl	Midodrine Hcl	33	11
Myrbetriq	Mirabegron	33	suppressed
Valacyclovir	Valacyclovir Hcl	33	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	32	suppressed
Paroxetine Hcl	Paroxetine Hcl	32	suppressed
Sevelamer Carbonate	Sevelamer Carbonate	32	suppressed
Torsemide	Torsemide	32	suppressed
Tradjenta	Linagliptin	32	suppressed
Promethazine Hcl	Promethazine Hcl	31	suppressed
Clonidine Hcl	Clonidine Hcl	30	11
Ingrezza	Valbenazine Tosylate	30	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	29	suppressed
Ceftriaxone	Ceftriaxone Sodium	29	12
Cephalexin	Cephalexin	29	21
Creon	Lipase/Protease/Amylase	29	suppressed
Aripiprazole	Aripiprazole	28	16
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	28	11
Methenamine Hippurate	Methenamine Hippurate	28	suppressed
Simvastatin	Simvastatin	28	suppressed
Amoxicillin	Amoxicillin	27	18
Doxycycline Monohydrate	Doxycycline Monohydrate	26	19
Humalog Kwikpen U-100	Insulin Lispro	26	12
Celecoxib	Celecoxib	25	suppressed
Lamotrigine	Lamotrigine	25	suppressed
Cefdinir	Cefdinir	24	17
Insulin Aspart Flexpen	Insulin Aspart	24	suppressed
Meloxicam	Meloxicam	24	suppressed
Alendronate Sodium	Alendronate Sodium	23	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	22	suppressed
Glimepiride	Glimepiride	22	suppressed
Lidocaine-Prilocaine	Lidocaine/Prilocaine	22	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	22	suppressed
Terbinafine Hcl	Terbinafine Hcl	22	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	22	suppressed
Glipizide Er	Glipizide	21	suppressed
Lacosamide	Lacosamide	21	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	21	suppressed
Nyamyc	Nystatin	21	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	21	suppressed
Glycopyrrolate	Glycopyrrolate	20	suppressed
Januvia	Sitagliptin Phosphate	20	suppressed
Lubiprostone	Lubiprostone	20	suppressed
Timolol Maleate	Timolol Maleate	19	suppressed
Fludrocortisone Acetate	Fludrocortisone Acetate	18	suppressed
Levofloxacin	Levofloxacin	18	13
Nystatin	Nystatin	18	11
Ondansetron Odt	Ondansetron	18	11
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	18	suppressed
Bicalutamide	Bicalutamide	17	suppressed
Bumetanide	Bumetanide	17	suppressed
Chlorthalidone	Chlorthalidone	17	suppressed
Digoxin	Digoxin	17	suppressed
Dorzolamide-Timolol	Dorzolamide Hcl/Timolol Maleat	17	suppressed
Pregabalin	Pregabalin	17	suppressed
Scopolamine	Scopolamine	17	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	17	11
Atenolol	Atenolol	16	suppressed
Ezetimibe	Ezetimibe	16	suppressed
Humalog	Insulin Lispro	16	suppressed
Lidocaine	Lidocaine	16	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	16	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	16	suppressed
Ozempic	Semaglutide	16	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	16	suppressed
Benztropine Mesylate	Benztropine Mesylate	15	suppressed
Brimonidine Tartrate	Brimonidine Tartrate	15	suppressed
Combigan	Brimonidine Tartrate/Timolol	15	suppressed
Insulin Lispro	Insulin Lispro	15	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	15	suppressed
Levemir	Insulin Detemir	15	suppressed
Linzess	Linaclotide	15	suppressed
Novolog Flexpen	Insulin Aspart	15	suppressed
Loperamide	Loperamide Hcl	14	suppressed
Megestrol Acetate	Megestrol Acetate	14	suppressed
Temazepam	Temazepam	14	suppressed
Ventolin Hfa	Albuterol Sulfate	14	suppressed
Nateglinide	Nateglinide	13	suppressed
Oxcarbazepine	Oxcarbazepine	13	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	13	suppressed
Amantadine	Amantadine Hcl	12	suppressed
Bupropion Xl	Bupropion Hcl	12	suppressed
Chlorhexidine Gluconate	Chlorhexidine Gluconate	12	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	12	suppressed
Enoxaparin Sodium	Enoxaparin Sodium	12	suppressed
Farxiga	Dapagliflozin Propanediol	12	suppressed
Fiasp Flextouch	Insulin Aspart (Niacinamide)	12	suppressed
Humulin R	Insulin Regular, Human	12	suppressed
Incruse Ellipta	Umeclidinium Bromide	12	suppressed
Topiramate	Topiramate	12	suppressed
Veltassa	Patiromer Calcium Sorbitex	12	suppressed
Admelog Solostar	Insulin Lispro	11	suppressed
Bupropion Hcl Sr	Bupropion Hcl	11	suppressed
Hydrocortisone	Hydrocortisone	11	suppressed
Nystatin-Triamcinolone	Nystatin/Triamcinolone Acet	11	suppressed
Omega-3 Acid Ethyl Esters	Omega-3 Acid Ethyl Esters	11	suppressed
Prednisolone Acetate	Prednisolone Acetate	11	suppressed
Xifaxan	Rifaximin	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