Healthcare provider profile · identity verified

Derek A Whitehall, PA-C

Physician Assistant · WENATCHEE, WA · NPI 1932242989

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
OmeprazoleOmeprazole20752
Atorvastatin CalciumAtorvastatin Calcium19858
LisinoprilLisinopril19855
Amlodipine BesylateAmlodipine Besylate19054
Levothyroxine SodiumLevothyroxine Sodium17838
EliquisApixaban14434
GabapentinGabapentin13422
Losartan PotassiumLosartan Potassium12937
Trazodone HclTrazodone Hcl10324
Metformin HclMetformin Hcl9826
Tamsulosin HclTamsulosin Hcl8727
Metoprolol SuccinateMetoprolol Succinate8525
FurosemideFurosemide8324
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen8018
HydrochlorothiazideHydrochlorothiazide7926
Potassium ChloridePotassium Chloride7918
Albuterol Sulfate HfaAlbuterol Sulfate7719
Quetiapine FumarateQuetiapine Fumarate75suppressed
Oxycodone HclOxycodone Hcl7412
MethocarbamolMethocarbamol7111
GlipizideGlipizide6917
Fluoxetine HclFluoxetine Hcl6212
Rosuvastatin CalciumRosuvastatin Calcium6212
SimvastatinSimvastatin5716
AllopurinolAllopurinol5313
JardianceEmpagliflozin5311
Warfarin SodiumWarfarin Sodium4914
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen46suppressed
PrednisonePrednisone4424
Duloxetine HclDuloxetine Hcl43suppressed
Sertraline HclSertraline Hcl4211
Venlafaxine Hcl ErVenlafaxine Hcl38suppressed
Citalopram HbrCitalopram Hydrobromide37suppressed
CarvedilolCarvedilol35suppressed
OzempicSemaglutide35suppressed
Tizanidine HclTizanidine Hcl3511
Metoprolol TartrateMetoprolol Tartrate3413
Fluticasone PropionateFluticasone Propionate3212
FinasterideFinasteride3112
Tramadol HclTramadol Hcl30suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide28suppressed
EzetimibeEzetimibe27suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol27suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog27suppressed
Oxybutynin Chloride ErOxybutynin Chloride27suppressed
Alendronate SodiumAlendronate Sodium26suppressed
Doxepin HclDoxepin Hcl26suppressed
LovastatinLovastatin24suppressed
SpironolactoneSpironolactone24suppressed
Bupropion XlBupropion Hcl23suppressed
Carbidopa-LevodopaCarbidopa/Levodopa23suppressed
CefuroximeCefuroxime Axetil2312
Escitalopram OxalateEscitalopram Oxalate23suppressed
ClopidogrelClopidogrel Bisulfate22suppressed
MirtazapineMirtazapine22suppressed
Pantoprazole SodiumPantoprazole Sodium22suppressed
Glipizide ErGlipizide21suppressed
FamotidineFamotidine20suppressed
Metformin Hcl ErMetformin Hcl20suppressed
BumetanideBumetanide19suppressed
RisperidoneRisperidone19suppressed
AzithromycinAzithromycin1816
Benztropine MesylateBenztropine Mesylate18suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl18suppressed
Hydroxyzine HclHydroxyzine Hcl18suppressed
Pyridostigmine BromidePyridostigmine Bromide18suppressed
Ropinirole HclRopinirole Hcl18suppressed
Zolpidem TartrateZolpidem Tartrate18suppressed
Benazepril HclBenazepril Hcl17suppressed
Nortriptyline HclNortriptyline Hcl17suppressed
Ondansetron OdtOndansetron17suppressed
Triamcinolone AcetonideTriamcinolone Acetonide1714
CelecoxibCelecoxib16suppressed
Paroxetine HclParoxetine Hcl16suppressed
Pioglitazone HclPioglitazone Hcl16suppressed
Spiriva HandihalerTiotropium Bromide16suppressed
AtenololAtenolol15suppressed
Divalproex SodiumDivalproex Sodium15suppressed
Humalog Kwikpen U-100Insulin Lispro15suppressed
HydrocortisoneHydrocortisone15suppressed
Ibandronate SodiumIbandronate Sodium15suppressed
BaclofenBaclofen14suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog14suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine14suppressed
IbuprofenIbuprofen14suppressed
LorazepamLorazepam14suppressed
OlanzapineOlanzapine14suppressed
AmoxicillinAmoxicillin13suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl13suppressed
Diclofenac SodiumDiclofenac Sodium13suppressed
GemfibrozilGemfibrozil13suppressed
Klor-Con M20Potassium Chloride13suppressed
SymbicortBudesonide/Formoterol Fumarate13suppressed
Tiotropium BromideTiotropium Bromide13suppressed
Alcohol SwabAlcohol Antiseptic Pads12suppressed
Breo ElliptaFluticasone/Vilanterol12suppressed
Ciprofloxacin HclCiprofloxacin Hcl12suppressed
ClonazepamClonazepam12suppressed
Montelukast SodiumMontelukast Sodium12suppressed
TestosteroneTestosterone12suppressed
XareltoRivaroxaban12suppressed
CephalexinCephalexin11suppressed
Nifedipine ErNifedipine11suppressed
TopiramateTopiramate11suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic11suppressed

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