Healthcare provider profile · identity verified

Barbara C Yap, MD

Family Practice · MARYSVILLE, WA · NPI 1306881479

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 Calcium474167
Amlodipine BesylateAmlodipine Besylate300112
Losartan PotassiumLosartan Potassium300107
Levothyroxine SodiumLevothyroxine Sodium27690
LisinoprilLisinopril26894
HydrochlorothiazideHydrochlorothiazide20969
AtenololAtenolol17866
SimvastatinSimvastatin13649
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen13127
Metformin HclMetformin Hcl11035
Alendronate SodiumAlendronate Sodium10743
FamotidineFamotidine10638
Albuterol Sulfate HfaAlbuterol Sulfate10560
Metoprolol TartrateMetoprolol Tartrate10535
GabapentinGabapentin9937
OmeprazoleOmeprazole9241
Pantoprazole SodiumPantoprazole Sodium8328
Triamcinolone AcetonideTriamcinolone Acetonide8245
Metformin Hcl ErMetformin Hcl8032
AllopurinolAllopurinol7630
Fluticasone PropionateFluticasone Propionate7629
FurosemideFurosemide7530
OzempicSemaglutide7312
Trazodone HclTrazodone Hcl7222
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide6919
AlvescoCiclesonide6732
MeloxicamMeloxicam6128
LorazepamLorazepam5923
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen58suppressed
LovastatinLovastatin5018
Montelukast SodiumMontelukast Sodium4814
Rosuvastatin CalciumRosuvastatin Calcium4819
IbuprofenIbuprofen4720
Terazosin HclTerazosin Hcl4314
Metoprolol SuccinateMetoprolol Succinate4215
Zolpidem TartrateZolpidem Tartrate41suppressed
GlipizideGlipizide3914
PrednisonePrednisone3928
Tizanidine HclTizanidine Hcl3613
ColchicineColchicine32suppressed
Spiriva RespimatTiotropium Bromide32suppressed
Tamsulosin HclTamsulosin Hcl3215
Tramadol HclTramadol Hcl32suppressed
LactuloseLactulose3111
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst3021
Nortriptyline HclNortriptyline Hcl30suppressed
PradaxaDabigatran Etexilate Mesylate3012
ClonazepamClonazepam29suppressed
Fluoxetine HclFluoxetine Hcl29suppressed
BreynaBudesonide/Formoterol Fumarate27suppressed
Oxybutynin Chloride ErOxybutynin Chloride27suppressed
Azelastine HclAzelastine Hcl26suppressed
Duloxetine HclDuloxetine Hcl26suppressed
JardianceEmpagliflozin2613
Wixela InhubFluticasone Propion/Salmeterol26suppressed
HydrocortisoneHydrocortisone2519
CefadroxilCefadroxil2421
Pravastatin SodiumPravastatin Sodium24suppressed
TemazepamTemazepam24suppressed
AcyclovirAcyclovir23suppressed
BaclofenBaclofen23suppressed
Citalopram HbrCitalopram Hydrobromide23suppressed
Ondansetron HclOndansetron Hcl23suppressed
AmoxicillinAmoxicillin22suppressed
Hydralazine HclHydralazine Hcl2211
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide22suppressed
Amitriptyline HclAmitriptyline Hcl21suppressed
Potassium ChloridePotassium Chloride21suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2018
Clindamycin PhosphateClindamycin Phosphate20suppressed
Clobetasol PropionateClobetasol Propionate2011
NaproxenNaproxen20suppressed
Sumatriptan SuccinateSumatriptan Succinate20suppressed
Doxycycline MonohydrateDoxycycline Monohydrate1915
EstradiolEstradiol19suppressed
FinasterideFinasteride19suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate19suppressed
Adacel TdapDiph,pertuss(Acell),tet Vac/Pf1818
CarvedilolCarvedilol18suppressed
PregabalinPregabalin18suppressed
NabumetoneNabumetone17suppressed
Ciprofloxacin HclCiprofloxacin Hcl1612
Clonidine HclClonidine Hcl16suppressed
ClopidogrelClopidogrel Bisulfate16suppressed
FluocinonideFluocinonide1611
Ipratropium BromideIpratropium Bromide16suppressed
Propranolol HclPropranolol Hcl16suppressed
Glipizide ErGlipizide15suppressed
Oxycodone HclOxycodone Hcl15suppressed
MirtazapineMirtazapine14suppressed
Ondansetron OdtOndansetron14suppressed
Acetaminophen-CodeineAcetaminophen With Codeine13suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl13suppressed
FluconazoleFluconazole13suppressed
Memantine HclMemantine Hcl13suppressed
RizatriptanRizatriptan Benzoate13suppressed
DigoxinDigoxin12suppressed
KetoconazoleKetoconazole12suppressed
MupirocinMupirocin12suppressed
Verapamil ErVerapamil Hcl12suppressed
EpinephrineEpinephrine11suppressed
Humulin NInsulin Nph Human Isophane11suppressed
Veo Insulin SyringeSyringe-Needle,insulin,0.5 Ml11suppressed

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