Healthcare provider profile · identity verified

Mark R Colombo, MD

Family Practice · STANWOOD, WA · NPI 1518933936

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 Calcium850271
Levothyroxine SodiumLevothyroxine Sodium474131
Metoprolol SuccinateMetoprolol Succinate417134
LisinoprilLisinopril394120
OmeprazoleOmeprazole374122
Amlodipine BesylateAmlodipine Besylate342111
Losartan PotassiumLosartan Potassium319101
Tamsulosin HclTamsulosin Hcl30491
TelmisartanTelmisartan24873
GabapentinGabapentin23885
Rosuvastatin CalciumRosuvastatin Calcium22882
Citalopram HbrCitalopram Hydrobromide14446
Potassium ChloridePotassium Chloride13040
Metformin Hcl ErMetformin Hcl11741
Metformin HclMetformin Hcl11438
Trazodone HclTrazodone Hcl11446
Tizanidine HclTizanidine Hcl10923
JardianceEmpagliflozin10536
AllopurinolAllopurinol10429
FurosemideFurosemide10134
Albuterol Sulfate HfaAlbuterol Sulfate10047
Pantoprazole SodiumPantoprazole Sodium10039
Glipizide ErGlipizide9433
AtenololAtenolol8622
Sertraline HclSertraline Hcl8624
SpironolactoneSpironolactone8527
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid8526
SimvastatinSimvastatin8120
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen7619
ValsartanValsartan6820
Fluticasone PropionateFluticasone Propionate6733
Alendronate SodiumAlendronate Sodium6623
Venlafaxine Hcl ErVenlafaxine Hcl6519
TrulicityDulaglutide6215
CarvedilolCarvedilol6020
EliquisApixaban6022
FinasterideFinasteride5915
HydrochlorothiazideHydrochlorothiazide5820
Pravastatin SodiumPravastatin Sodium5718
Triamcinolone AcetonideTriamcinolone Acetonide5737
Donepezil HclDonepezil Hcl5615
ClopidogrelClopidogrel Bisulfate5416
Diclofenac SodiumDiclofenac Sodium5414
EzetimibeEzetimibe5218
MethocarbamolMethocarbamol5220
OzempicSemaglutide52suppressed
Escitalopram OxalateEscitalopram Oxalate4814
SynthroidLevothyroxine Sodium4611
Metoprolol TartrateMetoprolol Tartrate4315
AcyclovirAcyclovir4120
PregabalinPregabalin41suppressed
FamotidineFamotidine3915
Vitamin D2Ergocalciferol (Vitamin D2)3911
EstradiolEstradiol3715
Warfarin SodiumWarfarin Sodium3514
XareltoRivaroxaban3512
Montelukast SodiumMontelukast Sodium3412
Doxepin HclDoxepin Hcl3311
KetoconazoleKetoconazole3220
Lantus SolostarInsulin Glargine,hum.Rec.Anlog3114
Buspirone HclBuspirone Hcl3012
ChlorthalidoneChlorthalidone29suppressed
Doxazosin MesylateDoxazosin Mesylate29suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl27suppressed
Oxycodone HclOxycodone Hcl2713
Amitriptyline HclAmitriptyline Hcl25suppressed
LamotrigineLamotrigine24suppressed
AlprazolamAlprazolam2313
Benazepril HclBenazepril Hcl23suppressed
Tramadol HclTramadol Hcl2313
Isosorbide Mononitrate ErIsosorbide Mononitrate22suppressed
TorsemideTorsemide22suppressed
Quetiapine FumarateQuetiapine Fumarate20suppressed
MupirocinMupirocin18suppressed
PrednisonePrednisone1811
Spiriva RespimatTiotropium Bromide18suppressed
Arnuity ElliptaFluticasone Furoate17suppressed
Bupropion XlBupropion Hcl17suppressed
ColchicineColchicine17suppressed
Paroxetine HclParoxetine Hcl17suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim17suppressed
Bupropion Hcl SrBupropion Hcl16suppressed
Duloxetine HclDuloxetine Hcl16suppressed
Ondansetron HclOndansetron Hcl16suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen16suppressed
FenofibrateFenofibrate15suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol15suppressed
Hydralazine HclHydralazine Hcl15suppressed
Hydroxyzine HclHydroxyzine Hcl15suppressed
NitroglycerinNitroglycerin1512
Fluoxetine HclFluoxetine Hcl14suppressed
LorazepamLorazepam14suppressed
LovastatinLovastatin14suppressed
MirtazapineMirtazapine14suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst14suppressed
Oxybutynin Chloride ErOxybutynin Chloride14suppressed
CiclopiroxCiclopirox13suppressed
Pioglitazone HclPioglitazone Hcl13suppressed
SulfasalazineSulfasalazine13suppressed
TopiramateTopiramate13suppressed
AmoxicillinAmoxicillin12suppressed
Propranolol HclPropranolol Hcl12suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine11suppressed
Clobetasol PropionateClobetasol Propionate11suppressed
ClonazepamClonazepam11suppressed
Droplet Pen NeedlePen Needle, Diabetic11suppressed
TresibaInsulin Degludec11suppressed
Verapamil ErVerapamil 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