Healthcare provider profile · identity verified

Marcus Lane Asby, M.D.

Internal Medicine · VANCOUVER, WA · NPI 1104112697

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
Atorvastatin CalciumAtorvastatin Calcium808231
LisinoprilLisinopril608168
Amlodipine BesylateAmlodipine Besylate561153
Losartan PotassiumLosartan Potassium496142
Levothyroxine SodiumLevothyroxine Sodium456121
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen35555
Oxycodone HclOxycodone Hcl34162
GabapentinGabapentin30088
Tamsulosin HclTamsulosin Hcl28389
SimvastatinSimvastatin25972
Metoprolol TartrateMetoprolol Tartrate25472
Trazodone HclTrazodone Hcl24072
PradaxaDabigatran Etexilate Mesylate23678
Metformin HclMetformin Hcl22968
Albuterol Sulfate HfaAlbuterol Sulfate21697
Rosuvastatin CalciumRosuvastatin Calcium20061
Pantoprazole SodiumPantoprazole Sodium19570
FurosemideFurosemide19057
HydrochlorothiazideHydrochlorothiazide18761
Potassium ChloridePotassium Chloride18562
GlipizideGlipizide18258
AtenololAtenolol18154
Metoprolol SuccinateMetoprolol Succinate15553
Duloxetine HclDuloxetine Hcl14242
Sertraline HclSertraline Hcl14237
Metformin Hcl ErMetformin Hcl14146
Tramadol HclTramadol Hcl13626
Warfarin SodiumWarfarin Sodium13639
SpironolactoneSpironolactone12137
Pravastatin SodiumPravastatin Sodium11724
Alendronate SodiumAlendronate Sodium11343
OmeprazoleOmeprazole11330
Humulin NInsulin Nph Human Isophane10329
MeloxicamMeloxicam10230
OzempicSemaglutide10114
CarvedilolCarvedilol9029
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide8927
Triamcinolone AcetonideTriamcinolone Acetonide8953
PrednisonePrednisone8355
FinasterideFinasteride7626
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen75suppressed
Spiriva RespimatTiotropium Bromide7524
AllopurinolAllopurinol7422
JardianceEmpagliflozin7123
Humulin RInsulin Regular, Human6818
Terazosin HclTerazosin Hcl6819
Donepezil HclDonepezil Hcl6514
ClopidogrelClopidogrel Bisulfate6421
Fluoxetine HclFluoxetine Hcl6318
Veo Insulin SyringeSyringe-Needle,insulin,0.5 Ml5920
AlvescoCiclesonide5828
Isosorbide Mononitrate ErIsosorbide Mononitrate5815
Diltiazem 24hr Er (Cd)Diltiazem Hcl5721
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide5715
LorazepamLorazepam5419
MethocarbamolMethocarbamol52suppressed
Wixela InhubFluticasone Propion/Salmeterol5121
Buspirone HclBuspirone Hcl5014
Citalopram HbrCitalopram Hydrobromide5015
EstradiolEstradiol5021
Bupropion XlBupropion Hcl4720
Bisoprolol FumarateBisoprolol Fumarate4612
Escitalopram OxalateEscitalopram Oxalate4516
Morphine Sulfate ErMorphine Sulfate45suppressed
CelecoxibCelecoxib4414
Ondansetron OdtOndansetron4418
FamotidineFamotidine4319
Montelukast SodiumMontelukast Sodium4314
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid4313
NitroglycerinNitroglycerin4226
Venlafaxine Hcl ErVenlafaxine Hcl4214
MirtazapineMirtazapine3914
Propranolol HclPropranolol Hcl3913
ValacyclovirValacyclovir Hcl3815
Fluticasone PropionateFluticasone Propionate3713
Insulin Glargine-YfgnInsulin Glargine-Yfgn3711
Quetiapine FumarateQuetiapine Fumarate36suppressed
XareltoRivaroxaban3612
NaproxenNaproxen35suppressed
AcyclovirAcyclovir34suppressed
KetoconazoleKetoconazole3414
EzetimibeEzetimibe31suppressed
Veo Insulin SyringeSyringe And Needle,insulin,1ml3115
Bupropion Hcl SrBupropion Hcl30suppressed
LovastatinLovastatin30suppressed
Ipratropium BromideIpratropium Bromide2915
ShingrixVaricella-Zoster Ge/As01b/Pf2824
Tizanidine HclTizanidine Hcl28suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic27suppressed
Memantine HclMemantine Hcl26suppressed
SucralfateSucralfate2611
AmoxicillinAmoxicillin2515
BaclofenBaclofen25suppressed
Clonidine HclClonidine Hcl25suppressed
Doxazosin MesylateDoxazosin Mesylate25suppressed
EliquisApixaban25suppressed
HydrocortisoneHydrocortisone2517
DigoxinDigoxin24suppressed
Oxybutynin Chloride ErOxybutynin Chloride24suppressed
Ropinirole HclRopinirole Hcl24suppressed
Acetaminophen-CodeineAcetaminophen With Codeine23suppressed
Doxycycline MonohydrateDoxycycline Monohydrate2313
IbuprofenIbuprofen23suppressed
NystatinNystatin23suppressed
TorsemideTorsemide2311
Dabigatran EtexilateDabigatran Etexilate Mesylate2222
Nortriptyline HclNortriptyline Hcl22suppressed
PregabalinPregabalin22suppressed
Morphine SulfateMorphine Sulfate21suppressed
AzithromycinAzithromycin2016
ColchicineColchicine20suppressed
Glipizide ErGlipizide20suppressed
TenivacTetanus-Diphtheria Toxoids/Pf2020
ClonazepamClonazepam19suppressed
FentanylFentanyl19suppressed
Hydralazine HclHydralazine Hcl19suppressed
Benazepril HclBenazepril Hcl18suppressed
ValsartanValsartan18suppressed
Verapamil ErVerapamil Hcl17suppressed
Cartia XtDiltiazem Hcl1612
CefadroxilCefadroxil16suppressed
CefuroximeCefuroxime Axetil1616
ArexvyRsvpref3 Antigen/As01e/Pf1515
Doxepin HclDoxepin Hcl15suppressed
FenofibrateFenofibrate15suppressed
FluocinonideFluocinonide15suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1511
Testosterone CypionateTestosterone Cypionate15suppressed
ChlorthalidoneChlorthalidone14suppressed
LactuloseLactulose14suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl14suppressed
TadalafilTadalafil14suppressed
AlprazolamAlprazolam13suppressed
HumalogInsulin Lispro13suppressed
Humulin 70-30Insulin Nph Hum/Reg Insulin Hm13suppressed
Nifedipine ErNifedipine13suppressed
Carbamazepine ErCarbamazepine12suppressed
CephalexinCephalexin12suppressed
Clobetasol PropionateClobetasol Propionate12suppressed
Humulin 70/30 KwikpenInsulin Nph Hum/Reg Insulin Hm12suppressed
LamotrigineLamotrigine12suppressed
Azelastine HclAzelastine Hcl11suppressed
PentoxifyllinePentoxifylline11suppressed

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