Healthcare provider profile · identity verified

Mark Gardner Bates, MD

Internal Medicine · BEAVERTON, OR · NPI 1558453696

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

BrandGenericClaimsBeneficiaries
Losartan PotassiumLosartan Potassium463132
Amlodipine BesylateAmlodipine Besylate429122
Atorvastatin CalciumAtorvastatin Calcium380111
LovastatinLovastatin34997
Levothyroxine SodiumLevothyroxine Sodium27969
LisinoprilLisinopril26270
HydrochlorothiazideHydrochlorothiazide23862
Metformin HclMetformin Hcl21269
EliquisApixaban19443
Metoprolol SuccinateMetoprolol Succinate18252
Pravastatin SodiumPravastatin Sodium15942
OmeprazoleOmeprazole15746
AllopurinolAllopurinol14936
Tamsulosin HclTamsulosin Hcl13539
Albuterol Sulfate HfaAlbuterol Sulfate11436
FinasterideFinasteride11425
SimvastatinSimvastatin10932
GabapentinGabapentin10336
Metoprolol TartrateMetoprolol Tartrate10326
Potassium ChloridePotassium Chloride9827
Pantoprazole SodiumPantoprazole Sodium9527
FurosemideFurosemide8925
CarvedilolCarvedilol8625
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav8563
AtenololAtenolol8223
GlimepirideGlimepiride8223
Rosuvastatin CalciumRosuvastatin Calcium7325
Alendronate SodiumAlendronate Sodium7225
FamotidineFamotidine7024
JardianceEmpagliflozin6917
Metformin Hcl ErMetformin Hcl6519
Lantus SolostarInsulin Glargine,hum.Rec.Anlog6214
ClopidogrelClopidogrel Bisulfate5817
Sertraline HclSertraline Hcl5815
Trazodone HclTrazodone Hcl5218
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide4714
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide4412
Hydralazine HclHydralazine Hcl4213
Clonidine HclClonidine Hcl4111
Warfarin SodiumWarfarin Sodium4113
Esomeprazole MagnesiumEsomeprazole Magnesium3814
Venlafaxine Hcl ErVenlafaxine Hcl38suppressed
Zolpidem TartrateZolpidem Tartrate38suppressed
Humalog Kwikpen U-100Insulin Lispro36suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid3511
Ciprofloxacin HclCiprofloxacin Hcl3330
MounjaroTirzepatide30suppressed
OzempicSemaglutide30suppressed
XareltoRivaroxaban29suppressed
Bupropion XlBupropion Hcl27suppressed
Escitalopram OxalateEscitalopram Oxalate27suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen2711
Tramadol HclTramadol Hcl27suppressed
Duloxetine HclDuloxetine Hcl26suppressed
Fluticasone PropionateFluticasone Propionate26suppressed
Memantine HclMemantine Hcl26suppressed
Montelukast SodiumMontelukast Sodium26suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl25suppressed
Fluoxetine HclFluoxetine Hcl25suppressed
PregabalinPregabalin25suppressed
ColchicineColchicine23suppressed
EzetimibeEzetimibe23suppressed
PrednisonePrednisone22suppressed
SpironolactoneSpironolactone22suppressed
Doxazosin MesylateDoxazosin Mesylate21suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol21suppressed
KetoconazoleKetoconazole2112
Propranolol HclPropranolol Hcl21suppressed
Ipratropium BromideIpratropium Bromide20suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2012
GlipizideGlipizide19suppressed
Olmesartan MedoxomilOlmesartan Medoxomil19suppressed
ChlorthalidoneChlorthalidone18suppressed
Potassium Citrate ErPotassium Citrate18suppressed
Buspirone HclBuspirone Hcl17suppressed
Carbidopa-Levodopa ErCarbidopa/Levodopa17suppressed
Donepezil HclDonepezil Hcl17suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic17suppressed
Nifedipine ErNifedipine17suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate16suppressed
CalcitriolCalcitriol16suppressed
Hydroxyzine HclHydroxyzine Hcl16suppressed
RamiprilRamipril16suppressed
Divalproex SodiumDivalproex Sodium15suppressed
LatanoprostLatanoprost15suppressed
Spiriva HandihalerTiotropium Bromide15suppressed
SynthroidLevothyroxine Sodium15suppressed
Ventolin HfaAlbuterol Sulfate15suppressed
Citalopram HbrCitalopram Hydrobromide14suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl14suppressed
Pulmicort FlexhalerBudesonide14suppressed
Tresiba Flextouch U-100Insulin Degludec14suppressed
Azelastine HclAzelastine Hcl13suppressed
CiclopiroxCiclopirox13suppressed
Autoshield Duo Pen NeedlePen Needle,dual Safety,diabetc12suppressed
Enalapril MaleateEnalapril Maleate12suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide12suppressed
Qvar RedihalerBeclomethasone Dipropionate12suppressed
TemazepamTemazepam12suppressed
AlprazolamAlprazolam11suppressed
Carbidopa-LevodopaCarbidopa/Levodopa11suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip11suppressed
Droplet Pen NeedlePen Needle, Diabetic11suppressed
Incruse ElliptaUmeclidinium Bromide11suppressed
MeloxicamMeloxicam11suppressed
NystatinNystatin11suppressed
Terazosin HclTerazosin Hcl11suppressed

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
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