Healthcare provider profile · identity verified

Loui Chan Gatdula, MD

Allopathic & Osteopathic Physicians|Family Medicine · LONGVIEW, TX · NPI 1528314721

Profile state: payments and partd 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

CMS Open Payments records show Loui Chan Gatdula, MD received $207.04 in general payments during 2025 across 3 reported records.

EVOKE PHARMA, INC. accounted for 59.9% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 3 associated products.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$207.04

3 reported records · 3 companies

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.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
EVOKE PHARMA, INC. Unresolved — no canonical attribution shown $123.9559.9%12025
Teva Pharmaceuticals USA, Inc. Unresolved — no canonical attribution shown $52.8025.5%12025
Eisai Inc. Unresolved — no canonical attribution shown $30.2914.6%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$207.043

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
GIMOTI
Normalized: gimoti
Drug EVOKE PHARMA, INC. $123.95 1 2025
Source payment records
AUSTEDO XR
Normalized: austedo xr
Drug Teva Pharmaceuticals USA, Inc. $52.80 1 2025
Source payment records
Leqembi
Normalized: leqembi
Drug Eisai Inc. $30.29 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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.

No publishable same-company prescribing overlap was found in the loaded Part D year. This does not mean the doctor never prescribed a drug reported elsewhere by a paying company.

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

BrandGenericClaimsBeneficiaries
Atorvastatin CalciumAtorvastatin Calcium451148
Amlodipine BesylateAmlodipine Besylate290103
Pantoprazole SodiumPantoprazole Sodium20869
LisinoprilLisinopril17865
Losartan PotassiumLosartan Potassium17148
Levothyroxine SodiumLevothyroxine Sodium16253
Potassium ChloridePotassium Chloride14849
Duloxetine HclDuloxetine Hcl13850
GabapentinGabapentin13758
Fluticasone PropionateFluticasone Propionate13453
Tramadol HclTramadol Hcl12233
HydrochlorothiazideHydrochlorothiazide11945
FurosemideFurosemide11743
Montelukast SodiumMontelukast Sodium10732
Metoprolol SuccinateMetoprolol Succinate10537
Tamsulosin HclTamsulosin Hcl10036
Rosuvastatin CalciumRosuvastatin Calcium9938
Metformin HclMetformin Hcl9839
OmeprazoleOmeprazole9634
Albuterol Sulfate HfaAlbuterol Sulfate9033
Trazodone HclTrazodone Hcl9034
Acetaminophen-CodeineAcetaminophen With Codeine8118
Cyclobenzaprine HclCyclobenzaprine Hcl8032
Fluoxetine HclFluoxetine Hcl8024
CarvedilolCarvedilol7732
ClopidogrelClopidogrel Bisulfate7528
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen7522
Metformin Hcl ErMetformin Hcl7125
Pravastatin SodiumPravastatin Sodium6922
EzetimibeEzetimibe6621
MethocarbamolMethocarbamol5815
Metoprolol TartrateMetoprolol Tartrate5423
AlprazolamAlprazolam52suppressed
FamotidineFamotidine5120
AllopurinolAllopurinol4817
PregabalinPregabalin4818
FinasterideFinasteride4513
Sertraline HclSertraline Hcl4319
Trelegy ElliptaFluticasone/Umeclidin/Vilanter42suppressed
MounjaroTirzepatide40suppressed
OzempicSemaglutide4017
Tizanidine HclTizanidine Hcl40suppressed
EliquisApixaban3813
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog38suppressed
Quetiapine FumarateQuetiapine Fumarate3714
Alendronate SodiumAlendronate Sodium36suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride3613
Zolpidem TartrateZolpidem Tartrate3617
Ondansetron OdtOndansetron3517
Azelastine HclAzelastine Hcl3314
BaclofenBaclofen3311
Hydroxyzine HclHydroxyzine Hcl3312
GlimepirideGlimepiride3212
GlipizideGlipizide3214
Ropinirole HclRopinirole Hcl32suppressed
TemazepamTemazepam32suppressed
IbuprofenIbuprofen3114
NaproxenNaproxen31suppressed
SpironolactoneSpironolactone3011
Triamcinolone AcetonideTriamcinolone Acetonide3018
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate28suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate2812
JardianceEmpagliflozin2813
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide2711
PrednisonePrednisone2719
Venlafaxine Hcl ErVenlafaxine Hcl27suppressed
Meclizine HclMeclizine Hcl26suppressed
MeloxicamMeloxicam26suppressed
Olmesartan MedoxomilOlmesartan Medoxomil26suppressed
ChlorthalidoneChlorthalidone2511
Nifedipine ErNifedipine25suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium24suppressed
Hydralazine HclHydralazine Hcl23suppressed
ValacyclovirValacyclovir Hcl23suppressed
Citalopram HbrCitalopram Hydrobromide22suppressed
Doxycycline HyclateDoxycycline Hyclate2211
Escitalopram OxalateEscitalopram Oxalate22suppressed
Bupropion XlBupropion Hcl21suppressed
IbuIbuprofen21suppressed
SimvastatinSimvastatin21suppressed
SymbicortBudesonide/Formoterol Fumarate2111
Amitriptyline HclAmitriptyline Hcl20suppressed
Bupropion Hcl SrBupropion Hcl20suppressed
Dicyclomine HclDicyclomine Hcl2012
KetoconazoleKetoconazole20suppressed
CarisoprodolCarisoprodol19suppressed
ClonazepamClonazepam19suppressed
Clonidine HclClonidine Hcl19suppressed
Donepezil HclDonepezil Hcl19suppressed
MirtazapineMirtazapine19suppressed
Diclofenac SodiumDiclofenac Sodium18suppressed
EszopicloneEszopiclone18suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog18suppressed
LevetiracetamLevetiracetam18suppressed
Buspirone HclBuspirone Hcl17suppressed
NitroglycerinNitroglycerin17suppressed
Propranolol HclPropranolol Hcl17suppressed
Ventolin HfaAlbuterol Sulfate17suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic16suppressed
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic16suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril15suppressed
AzithromycinAzithromycin1515
CephalexinCephalexin1513
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine15suppressed
LevofloxacinLevofloxacin1511
LovastatinLovastatin15suppressed
Ondansetron HclOndansetron Hcl15suppressed
TorsemideTorsemide15suppressed
TrulicityDulaglutide15suppressed
DiazepamDiazepam14suppressed
Alfuzosin Hcl ErAlfuzosin Hcl13suppressed
AtenololAtenolol13suppressed
Breo ElliptaFluticasone/Vilanterol13suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide13suppressed
Pioglitazone HclPioglitazone Hcl13suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1312
TopiramateTopiramate13suppressed
Benazepril HclBenazepril Hcl12suppressed
Dropsafe Prep PadsAlcohol Antiseptic Pads12suppressed
FluconazoleFluconazole12suppressed
JanuviaSitagliptin Phosphate12suppressed
Oxybutynin Chloride ErOxybutynin Chloride12suppressed
LansoprazoleLansoprazole11suppressed
SynthroidLevothyroxine Sodium11suppressed

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.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025 $207.04 · 3 records EVOKE PHARMA, INC. AUSTEDO XR, GIMOTI, Leqembi
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
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