Healthcare provider profile · identity verified

Vlastimil Calayan

Internal Medicine · TOPPENISH, WA · NPI 1073757118

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 Calcium26590
Amlodipine BesylateAmlodipine Besylate18166
LisinoprilLisinopril17864
Pantoprazole SodiumPantoprazole Sodium17433
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen14522
Losartan PotassiumLosartan Potassium14051
OmeprazoleOmeprazole12235
Levothyroxine SodiumLevothyroxine Sodium11633
Metformin HclMetformin Hcl9044
GabapentinGabapentin8432
HydrochlorothiazideHydrochlorothiazide8233
Metoprolol SuccinateMetoprolol Succinate7728
Tamsulosin HclTamsulosin Hcl7424
Alendronate SodiumAlendronate Sodium7317
Albuterol Sulfate HfaAlbuterol Sulfate6728
FurosemideFurosemide6528
FamotidineFamotidine6118
Lantus SolostarInsulin Glargine,hum.Rec.Anlog5917
Sertraline HclSertraline Hcl5418
EliquisApixaban5011
CarvedilolCarvedilol4515
Donepezil HclDonepezil Hcl44suppressed
Fluticasone PropionateFluticasone Propionate4319
AllopurinolAllopurinol41suppressed
Oxycodone HclOxycodone Hcl39suppressed
Acetaminophen-CodeineAcetaminophen With Codeine3815
JardianceEmpagliflozin3714
LorazepamLorazepam37suppressed
Duloxetine HclDuloxetine Hcl35suppressed
Trazodone HclTrazodone Hcl3414
ClopidogrelClopidogrel Bisulfate33suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl33suppressed
Rosuvastatin CalciumRosuvastatin Calcium3315
GlipizideGlipizide32suppressed
MeloxicamMeloxicam31suppressed
HydrocortisoneHydrocortisone3015
LantusInsulin Glargine,hum.Rec.Anlog30suppressed
MupirocinMupirocin3019
Pioglitazone HclPioglitazone Hcl30suppressed
Meclizine HclMeclizine Hcl29suppressed
Ropinirole HclRopinirole Hcl26suppressed
AlprazolamAlprazolam25suppressed
Citalopram HbrCitalopram Hydrobromide25suppressed
Tramadol HclTramadol Hcl25suppressed
Humalog Kwikpen U-100Insulin Lispro24suppressed
Doxycycline HyclateDoxycycline Hyclate2323
Potassium ChloridePotassium Chloride2311
ShingrixVaricella-Zoster Ge/As01b/Pf2323
SimvastatinSimvastatin23suppressed
JanuviaSitagliptin Phosphate22suppressed
PrednisonePrednisone2212
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2121
CephalexinCephalexin2119
MirtazapineMirtazapine21suppressed
Diclofenac SodiumDiclofenac Sodium2011
Esomeprazole MagnesiumEsomeprazole Magnesium20suppressed
Metoprolol TartrateMetoprolol Tartrate20suppressed
Hydroxyzine PamoateHydroxyzine Pamoate19suppressed
Amitriptyline HclAmitriptyline Hcl18suppressed
BaclofenBaclofen18suppressed
Hydroxyzine HclHydroxyzine Hcl18suppressed
NitroglycerinNitroglycerin1811
Ondansetron OdtOndansetron18suppressed
Terbinafine HclTerbinafine Hcl18suppressed
Ventolin HfaAlbuterol Sulfate18suppressed
Metformin Hcl ErMetformin Hcl17suppressed
Tizanidine HclTizanidine Hcl17suppressed
HumalogInsulin Lispro16suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide16suppressed
SucralfateSucralfate16suppressed
TrulancePlecanatide16suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate15suppressed
Triamcinolone AcetonideTriamcinolone Acetonide15suppressed
Bupropion XlBupropion Hcl14suppressed
ChlorthalidoneChlorthalidone14suppressed
DuleraMometasone/Formoterol14suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen14suppressed
PregabalinPregabalin14suppressed
BreynaBudesonide/Formoterol Fumarate13suppressed
Pravastatin SodiumPravastatin Sodium13suppressed
Buspirone HclBuspirone Hcl12suppressed
ClotrimazoleClotrimazole12suppressed
Glipizide ErGlipizide12suppressed
Montelukast SodiumMontelukast Sodium12suppressed
AbrysvoRsv Vacc, Pref A And Pref B/Pf1111
AmoxicillinAmoxicillin1111
AzathioprineAzathioprine11suppressed
ClonazepamClonazepam11suppressed
Escitalopram OxalateEscitalopram Oxalate11suppressed
NaproxenNaproxen11suppressed
Tamoxifen CitrateTamoxifen Citrate11suppressed

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