Healthcare provider profile · identity verified

Mark S Ambler, MD

Allopathic & Osteopathic Physicians|Internal Medicine · AUSTIN, TX · NPI 1851310965

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 Mark S Ambler, MD received $16.82 in general payments during 2025 across 1 reported records.

GlaxoSmithKline, LLC. accounted for 100.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 2 associated products.

GlaxoSmithKline, LLC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 31 claims for Trelegy Ellipta by this doctor in 2024.

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

Payment overview · 2025

General Payments

$16.82

1 reported records · 1 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
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $16.82100.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$16.821

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
BEXSERO
Normalized: bexsero
Biological GlaxoSmithKline, LLC. $16.82 1 2025
Source payment records
PEDIARIX
Normalized: pediarix
Biological GlaxoSmithKline, LLC. $16.82 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.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 TRELEGY ELLIPTA
open payments reported associated product
CMS Open Payments — General Payments
131532 supporting records · 37148 recipient NPIs · example record 1190332369
Trelegy Ellipta · 2024
Exact normalized brand match · 1 Part D row
31 suppressed by CMS

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 Calcium752254
Levothyroxine SodiumLevothyroxine Sodium446127
Amlodipine BesylateAmlodipine Besylate409121
LisinoprilLisinopril310101
Rosuvastatin CalciumRosuvastatin Calcium29098
OmeprazoleOmeprazole27482
Metoprolol SuccinateMetoprolol Succinate23370
Metformin HclMetformin Hcl22069
Trazodone HclTrazodone Hcl20466
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide20263
Losartan PotassiumLosartan Potassium19064
Tamsulosin HclTamsulosin Hcl16652
SimvastatinSimvastatin15048
GabapentinGabapentin14548
Fluticasone PropionateFluticasone Propionate13739
Escitalopram OxalateEscitalopram Oxalate12036
Pantoprazole SodiumPantoprazole Sodium12038
Metformin Hcl ErMetformin Hcl11747
Montelukast SodiumMontelukast Sodium11636
Alendronate SodiumAlendronate Sodium11233
MeloxicamMeloxicam11152
Sertraline HclSertraline Hcl10926
Duloxetine HclDuloxetine Hcl10637
GlimepirideGlimepiride10035
Albuterol Sulfate HfaAlbuterol Sulfate9246
RybelsusSemaglutide9215
HydrochlorothiazideHydrochlorothiazide8834
Propranolol HclPropranolol Hcl8026
MirtazapineMirtazapine7925
OzempicSemaglutide7718
Ipratropium BromideIpratropium Bromide7530
AllopurinolAllopurinol7321
Tizanidine HclTizanidine Hcl6618
Zolpidem TartrateZolpidem Tartrate6513
MounjaroTirzepatide6422
ClopidogrelClopidogrel Bisulfate6217
BaclofenBaclofen6113
AlprazolamAlprazolam5516
Metoprolol TartrateMetoprolol Tartrate5514
EliquisApixaban5316
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide5118
PrednisonePrednisone5043
Pravastatin SodiumPravastatin Sodium4819
Azelastine HclAzelastine Hcl4614
FinasterideFinasteride4615
Triamcinolone AcetonideTriamcinolone Acetonide4634
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen4513
JardianceEmpagliflozin4512
Tramadol HclTramadol Hcl4415
CarvedilolCarvedilol4320
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine43suppressed
Potassium ChloridePotassium Chloride4315
Bupropion XlBupropion Hcl4214
Quetiapine FumarateQuetiapine Fumarate42suppressed
Fluoxetine HclFluoxetine Hcl4113
Olmesartan MedoxomilOlmesartan Medoxomil4013
Nortriptyline HclNortriptyline Hcl39suppressed
Ondansetron OdtOndansetron3920
Pioglitazone HclPioglitazone Hcl3913
Fluticasone-SalmeterolFluticasone Propion/Salmeterol3815
Cyclobenzaprine HclCyclobenzaprine Hcl3716
FurosemideFurosemide3615
ValacyclovirValacyclovir Hcl3518
ChlorthalidoneChlorthalidone3311
SynthroidLevothyroxine Sodium3312
Oxybutynin Chloride ErOxybutynin Chloride3211
Tolterodine Tartrate ErTolterodine Tartrate3212
PregabalinPregabalin31suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter31suppressed
Hydroxyzine HclHydroxyzine Hcl28suppressed
TopiramateTopiramate28suppressed
CelecoxibCelecoxib27suppressed
Ondansetron HclOndansetron Hcl27suppressed
SpironolactoneSpironolactone27suppressed
Buspirone HclBuspirone Hcl25suppressed
ColchicineColchicine25suppressed
Diclofenac SodiumDiclofenac Sodium25suppressed
TrulicityDulaglutide25suppressed
EzetimibeEzetimibe24suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide24suppressed
Benazepril HclBenazepril Hcl23suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid23suppressed
Doxycycline HyclateDoxycycline Hyclate2219
Enalapril MaleateEnalapril Maleate22suppressed
FamotidineFamotidine22suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2120
EszopicloneEszopiclone21suppressed
JanuviaSitagliptin Phosphate21suppressed
LamotrigineLamotrigine21suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog21suppressed
LovastatinLovastatin21suppressed
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic21suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide21suppressed
AtenololAtenolol20suppressed
EstradiolEstradiol20suppressed
RamiprilRamipril20suppressed
Verapamil ErVerapamil Hcl20suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl19suppressed
Dicyclomine HclDicyclomine Hcl18suppressed
SucralfateSucralfate18suppressed
ValsartanValsartan18suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril17suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium17suppressed
FarxigaDapagliflozin Propanediol17suppressed
GlyburideGlyburide17suppressed
Paroxetine HclParoxetine Hcl16suppressed
CephalexinCephalexin1514
ClonazepamClonazepam15suppressed
Doxazosin MesylateDoxazosin Mesylate15suppressed
Humalog Kwikpen U-100Insulin Lispro15suppressed
Hydroxyzine PamoateHydroxyzine Pamoate15suppressed
RizatriptanRizatriptan Benzoate15suppressed
Sumatriptan SuccinateSumatriptan Succinate15suppressed
AcyclovirAcyclovir14suppressed
Citalopram HbrCitalopram Hydrobromide14suppressed
Methylphenidate ErMethylphenidate Hcl14suppressed
Methylphenidate HclMethylphenidate Hcl14suppressed
NitroglycerinNitroglycerin14suppressed
SymbicortBudesonide/Formoterol Fumarate14suppressed
XareltoRivaroxaban14suppressed
Amitriptyline HclAmitriptyline Hcl13suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine13suppressed
Hydralazine HclHydralazine Hcl13suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic13suppressed
Oxybutynin ChlorideOxybutynin Chloride13suppressed
PrimidonePrimidone13suppressed
Solifenacin SuccinateSolifenacin Succinate13suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate12suppressed
Droplet Pen NeedlePen Needle, Diabetic12suppressed
FluconazoleFluconazole12suppressed
Glipizide ErGlipizide12suppressed
Insulin SyringeSyringe And Needle,insulin,1ml12suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate12suppressed
Lithium CarbonateLithium Carbonate12suppressed
NystatinNystatin12suppressed
Tolterodine TartrateTolterodine Tartrate12suppressed
Tresiba Flextouch U-100Insulin Degludec12suppressed
Venlafaxine Hcl ErVenlafaxine Hcl12suppressed
Aimovig AutoinjectorErenumab-Aooe11suppressed
AzithromycinAzithromycin1111
LantusInsulin Glargine,hum.Rec.Anlog11suppressed
Novolog FlexpenInsulin Aspart11suppressed
Promethazine HclPromethazine Hcl11suppressed
Ropinirole HclRopinirole Hcl11suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim11suppressed

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 $16.82 · 1 records GlaxoSmithKline, LLC. BEXSERO, PEDIARIX 1
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