Healthcare provider profile · identity verified

Robert Anthony Mason, MD

Family Practice · WINDSOR, CO · NPI 1821005992

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 Calcium20670
Levothyroxine SodiumLevothyroxine Sodium20260
HydrochlorothiazideHydrochlorothiazide10633
LisinoprilLisinopril9736
Tamsulosin HclTamsulosin Hcl8427
Trazodone HclTrazodone Hcl8321
OmeprazoleOmeprazole7730
AllopurinolAllopurinol7521
Metformin Hcl ErMetformin Hcl7426
Enalapril MaleateEnalapril Maleate6818
Amlodipine BesylateAmlodipine Besylate6727
Metformin HclMetformin Hcl6422
SimvastatinSimvastatin6421
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen5812
Losartan PotassiumLosartan Potassium5824
Metoprolol SuccinateMetoprolol Succinate5822
PrednisonePrednisone5335
GabapentinGabapentin4719
Rosuvastatin CalciumRosuvastatin Calcium4515
Pravastatin SodiumPravastatin Sodium4417
Montelukast SodiumMontelukast Sodium4315
Warfarin SodiumWarfarin Sodium42suppressed
Triamcinolone AcetonideTriamcinolone Acetonide3821
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen36suppressed
Citalopram HbrCitalopram Hydrobromide3512
Fluoxetine HclFluoxetine Hcl35suppressed
FurosemideFurosemide33suppressed
Tramadol HclTramadol Hcl33suppressed
Duloxetine HclDuloxetine Hcl3212
Oxycodone HclOxycodone Hcl30suppressed
AlprazolamAlprazolam29suppressed
Albuterol Sulfate HfaAlbuterol Sulfate2821
EliquisApixaban2712
Alendronate SodiumAlendronate Sodium26suppressed
LovastatinLovastatin26suppressed
ClonazepamClonazepam25suppressed
NaproxenNaproxen2513
AzithromycinAzithromycin2420
Diclofenac SodiumDiclofenac Sodium24suppressed
Terazosin HclTerazosin Hcl24suppressed
FinasterideFinasteride23suppressed
OzempicSemaglutide23suppressed
Sertraline HclSertraline Hcl23suppressed
Metoprolol TartrateMetoprolol Tartrate22suppressed
Sumatriptan SuccinateSumatriptan Succinate21suppressed
OxycontinOxycodone Hcl20suppressed
Pantoprazole SodiumPantoprazole Sodium20suppressed
Potassium ChloridePotassium Chloride20suppressed
Zolpidem TartrateZolpidem Tartrate20suppressed
AripiprazoleAripiprazole18suppressed
Oxybutynin ChlorideOxybutynin Chloride18suppressed
PregabalinPregabalin18suppressed
Amitriptyline HclAmitriptyline Hcl17suppressed
Bupropion XlBupropion Hcl17suppressed
ClopidogrelClopidogrel Bisulfate17suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip17suppressed
JardianceEmpagliflozin17suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide17suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide17suppressed
XareltoRivaroxaban17suppressed
AtenololAtenolol16suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1613
Cyclobenzaprine HclCyclobenzaprine Hcl15suppressed
FentanylFentanyl15suppressed
Propranolol Hcl ErPropranolol Hcl15suppressed
TrulicityDulaglutide15suppressed
Terbinafine HclTerbinafine Hcl14suppressed
LorazepamLorazepam13suppressed
Paroxetine HclParoxetine Hcl13suppressed
CarvedilolCarvedilol12suppressed
CephalexinCephalexin1212
Ondansetron HclOndansetron Hcl12suppressed
BaclofenBaclofen11suppressed
EstradiolEstradiol11suppressed
MeloxicamMeloxicam11suppressed
TestosteroneTestosterone11suppressed
Tizanidine HclTizanidine Hcl11suppressed
Venlafaxine Hcl ErVenlafaxine 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