Healthcare provider profile · identity verified

Cornelia W. Tan, MD

Internal Medicine · DALLAS, TX · NPI 1316948391

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
Amlodipine Besylate	Amlodipine Besylate	694	186
Atorvastatin Calcium	Atorvastatin Calcium	565	167
Gabapentin	Gabapentin	422	97
Metformin Hcl	Metformin Hcl	331	87
Ozempic	Semaglutide	325	54
Lisinopril	Lisinopril	270	79
Pantoprazole Sodium	Pantoprazole Sodium	254	66
Losartan Potassium	Losartan Potassium	238	60
Carvedilol	Carvedilol	237	67
Albuterol Sulfate Hfa	Albuterol Sulfate	205	54
Fluticasone Propionate	Fluticasone Propionate	192	58
Simvastatin	Simvastatin	185	46
Famotidine	Famotidine	181	47
Jardiance	Empagliflozin	181	43
Tramadol Hcl	Tramadol Hcl	158	38
Levothyroxine Sodium	Levothyroxine Sodium	152	36
Hydrochlorothiazide	Hydrochlorothiazide	150	43
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	145	30
Tamsulosin Hcl	Tamsulosin Hcl	145	30
Furosemide	Furosemide	142	43
Hydroxyzine Hcl	Hydroxyzine Hcl	135	28
Hydralazine Hcl	Hydralazine Hcl	131	28
Glipizide	Glipizide	120	30
Pravastatin Sodium	Pravastatin Sodium	120	26
Baclofen	Baclofen	114	31
Pregabalin	Pregabalin	110	22
Ibuprofen	Ibuprofen	109	27
Metoprolol Succinate	Metoprolol Succinate	106	37
Acetaminophen-Codeine	Acetaminophen With Codeine	102	27
Potassium Chloride	Potassium Chloride	101	23
Allopurinol	Allopurinol	95	32
Trazodone Hcl	Trazodone Hcl	93	19
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	91	26
Methocarbamol	Methocarbamol	86	32
Nifedipine Er	Nifedipine	86	22
Warfarin Sodium	Warfarin Sodium	81	12
Rosuvastatin Calcium	Rosuvastatin Calcium	78	26
Naproxen	Naproxen	76	23
Spironolactone	Spironolactone	76	21
Tizanidine Hcl	Tizanidine Hcl	71	19
Ventolin Hfa	Albuterol Sulfate	71	26
Triamcinolone Acetonide	Triamcinolone Acetonide	69	23
Novolin 70-30	Insulin Nph Hum/Reg Insulin Hm	66	21
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	63	17
Doxazosin Mesylate	Doxazosin Mesylate	62	11
Xarelto	Rivaroxaban	61	12
Meloxicam	Meloxicam	58	13
Chlorthalidone	Chlorthalidone	55	18
Diclofenac Sodium	Diclofenac Sodium	53	16
Fenofibrate	Fenofibrate,micronized	53	12
Atrovent Hfa	Ipratropium Bromide	52	12
Duloxetine Hcl	Duloxetine Hcl	51	14
Oxybutynin Chloride Er	Oxybutynin Chloride	49	12
Chlorhexidine Gluconate	Chlorhexidine Gluconate	48	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	47	14
Vitamin D2	Ergocalciferol (Vitamin D2)	46	12
Torsemide	Torsemide	45	11
Alendronate Sodium	Alendronate Sodium	43	suppressed
Omeprazole	Omeprazole	42	suppressed
Metoprolol Tartrate	Metoprolol Tartrate	39	12
Ezetimibe	Ezetimibe	38	13
Metformin Hcl Er	Metformin Hcl	37	14
Mirtazapine	Mirtazapine	37	suppressed
Citalopram Hbr	Citalopram Hydrobromide	35	suppressed
Doxepin Hcl	Doxepin Hcl	34	suppressed
Montelukast Sodium	Montelukast Sodium	34	suppressed
Novolin R	Insulin Regular, Human	34	suppressed
Humulin 70-30	Insulin Nph Hum/Reg Insulin Hm	33	12
Mounjaro	Tirzepatide	33	12
Clopidogrel	Clopidogrel Bisulfate	32	suppressed
Victoza 3-Pak	Liraglutide	32	suppressed
Amoxicillin	Amoxicillin	31	25
Insulin Syringe	Syringe And Needle,insulin,1ml	29	suppressed
Rybelsus	Semaglutide	29	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	28	suppressed
Trueplus Insulin Syringe	Syringe And Needle,insulin,1ml	27	suppressed
Novolin N	Insulin Nph Human Isophane	26	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	25	suppressed
Breo Ellipta	Fluticasone/Vilanterol	24	suppressed
Incruse Ellipta	Umeclidinium Bromide	24	suppressed
Topiramate	Topiramate	23	suppressed
Valacyclovir	Valacyclovir Hcl	23	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	22	suppressed
Buspirone Hcl	Buspirone Hcl	22	suppressed
Techlite Pen Needle	Pen Needle, Diabetic	22	15
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	22	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	20	suppressed
Meclizine Hcl	Meclizine Hcl	20	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	20	suppressed
Trueplus Insulin Syringe	Syringe-Needle,insulin,0.5 Ml	20	suppressed
Advair Diskus	Fluticasone Propion/Salmeterol	19	suppressed
Entresto	Sacubitril/Valsartan	19	suppressed
Propranolol Hcl	Propranolol Hcl	18	suppressed
Alcohol Prep Pads	Alcohol Antiseptic Pads	17	suppressed
Farxiga	Dapagliflozin Propanediol	17	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	17	suppressed
Nitroglycerin	Nitroglycerin	17	suppressed
Novolog Mix 70-30 Flexpen	Insulin Aspart Prot/Insuln Asp	17	suppressed
Clindamycin Phosphate	Clindamycin Phosphate	16	suppressed
Mupirocin	Mupirocin	16	11
Sertraline Hcl	Sertraline Hcl	16	suppressed
Spiriva Handihaler	Tiotropium Bromide	16	suppressed
Sucralfate	Sucralfate	16	suppressed
Ultra-Fine Nano Pen Needle	Pen Needle, Diabetic	16	suppressed
Verapamil Er	Verapamil Hcl	16	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	15	suppressed
Novolog Flexpen	Insulin Aspart	15	suppressed
Ondansetron Odt	Ondansetron	15	suppressed
Prednisone	Prednisone	15	13
Tresiba Flextouch U-200	Insulin Degludec	15	suppressed
Donepezil Hcl	Donepezil Hcl	14	suppressed
Eliquis	Apixaban	14	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	14	suppressed
Megestrol Acetate	Megestrol Acetate	14	suppressed
Novolin 70-30 Flexpen	Insulin Nph Hum/Reg Insulin Hm	14	suppressed
Clonidine Hcl	Clonidine Hcl	13	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	13	suppressed
Insulin Syringe	Syringe-Needle,insulin,0.5 Ml	13	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	13	suppressed
Premarin	Estrogens, Conjugated	13	suppressed
Acyclovir	Acyclovir	12	suppressed
Atenolol	Atenolol	12	suppressed
Breyna	Budesonide/Formoterol Fumarate	12	suppressed
Colchicine	Colchicine	12	suppressed
Etodolac	Etodolac	12	suppressed
Finasteride	Finasteride	12	suppressed
Glimepiride	Glimepiride	12	suppressed
Isosorbide Dinitrate	Isosorbide Dinitrate	12	suppressed
Nystatin	Nystatin	12	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	12	11
Lidocaine	Lidocaine	11	suppressed
Methimazole	Methimazole	11	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	11	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	11	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	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