Healthcare provider profile · identity verified

Dean John Nickles, MD

Internal Medicine · EMERYVILLE, CA · NPI 1255390050

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 Calcium728213
Amlodipine BesylateAmlodipine Besylate482141
LisinoprilLisinopril376103
Losartan PotassiumLosartan Potassium29383
HydrochlorothiazideHydrochlorothiazide25181
Levothyroxine SodiumLevothyroxine Sodium20959
Rosuvastatin CalciumRosuvastatin Calcium17955
Metoprolol SuccinateMetoprolol Succinate13039
Tamsulosin HclTamsulosin Hcl12839
EliquisApixaban10526
GabapentinGabapentin10330
Montelukast SodiumMontelukast Sodium9625
Zolpidem TartrateZolpidem Tartrate9437
SimvastatinSimvastatin9224
XareltoRivaroxaban8520
Fluticasone PropionateFluticasone Propionate8439
Potassium ChloridePotassium Chloride8423
Pantoprazole SodiumPantoprazole Sodium8330
Escitalopram OxalateEscitalopram Oxalate7320
TorsemideTorsemide7225
RamiprilRamipril7127
Alendronate SodiumAlendronate Sodium6520
LovastatinLovastatin6418
AllopurinolAllopurinol6320
AtenololAtenolol6218
Diltiazem 24hr Er (Cd)Diltiazem Hcl6220
CarvedilolCarvedilol6118
FarxigaDapagliflozin Propanediol5921
Metformin HclMetformin Hcl5924
Pravastatin SodiumPravastatin Sodium5917
FurosemideFurosemide5518
FamotidineFamotidine5219
OmeprazoleOmeprazole5215
Albuterol Sulfate HfaAlbuterol Sulfate5026
Sertraline HclSertraline Hcl4712
PrednisonePrednisone4518
Metformin Hcl ErMetformin Hcl4418
ClopidogrelClopidogrel Bisulfate4216
OzempicSemaglutide42suppressed
ValsartanValsartan4214
Donepezil HclDonepezil Hcl40suppressed
LorazepamLorazepam3912
Olmesartan MedoxomilOlmesartan Medoxomil3812
Wixela InhubFluticasone Propion/Salmeterol38suppressed
PaxlovidNirmatrelvir/Ritonavir3636
Citalopram HbrCitalopram Hydrobromide3511
Fluoxetine HclFluoxetine Hcl35suppressed
MirtazapineMirtazapine3311
SpironolactoneSpironolactone3111
Quetiapine FumarateQuetiapine Fumarate30suppressed
CelecoxibCelecoxib2914
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen29suppressed
Azelastine HclAzelastine Hcl28suppressed
AzithromycinAzithromycin2827
Trazodone HclTrazodone Hcl2813
AcyclovirAcyclovir27suppressed
Hydralazine HclHydralazine Hcl2611
Triamcinolone AcetonideTriamcinolone Acetonide2314
Tramadol HclTramadol Hcl22suppressed
FenofibrateFenofibrate Nanocrystallized21suppressed
DiazepamDiazepam20suppressed
Paroxetine HclParoxetine Hcl20suppressed
Folic AcidFolic Acid19suppressed
ValacyclovirValacyclovir Hcl19suppressed
Bupropion XlBupropion Hcl18suppressed
Benazepril HclBenazepril Hcl17suppressed
ColchicineColchicine1711
FinasterideFinasteride17suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol17suppressed
AlprazolamAlprazolam16suppressed
BaclofenBaclofen16suppressed
ClotrimazoleClotrimazole16suppressed
Diclofenac SodiumDiclofenac Sodium1612
EzetimibeEzetimibe16suppressed
LevetiracetamLevetiracetam16suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid16suppressed
BreynaBudesonide/Formoterol Fumarate15suppressed
Glipizide ErGlipizide15suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide15suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium14suppressed
EstradiolEstradiol14suppressed
Fluticasone Propionate HfaFluticasone Propionate14suppressed
JanuviaSitagliptin Phosphate14suppressed
MethimazoleMethimazole14suppressed
SynthroidLevothyroxine Sodium14suppressed
AmoxicillinAmoxicillin13suppressed
Doxycycline HyclateDoxycycline Hyclate13suppressed
GlipizideGlipizide13suppressed
Hydroxyzine HclHydroxyzine Hcl13suppressed
JardianceEmpagliflozin13suppressed
Warfarin SodiumWarfarin Sodium13suppressed
Breo ElliptaFluticasone/Vilanterol12suppressed
Bupropion Hcl SrBupropion Hcl12suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl12suppressed
Estradiol (Once Weekly)Estradiol12suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide12suppressed
MesalamineMesalamine12suppressed
Metoprolol TartrateMetoprolol Tartrate12suppressed
DigoxinDigoxin11suppressed
Flecainide AcetateFlecainide Acetate11suppressed
MinoxidilMinoxidil11suppressed
NystatinNystatin11suppressed
Pulmicort FlexhalerBudesonide11suppressed
Repatha SureclickEvolocumab11suppressed
SymbicortBudesonide/Formoterol Fumarate11suppressed

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