Healthcare provider profile · identity verified

Allen Nelson

Family Practice · SANTA ANA, CA · NPI 1548757610

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 Calcium418191
Amlodipine BesylateAmlodipine Besylate261100
LisinoprilLisinopril233104
Losartan PotassiumLosartan Potassium23192
Levothyroxine SodiumLevothyroxine Sodium20081
Rosuvastatin CalciumRosuvastatin Calcium18586
Metformin HclMetformin Hcl12356
Tamsulosin HclTamsulosin Hcl11444
Albuterol Sulfate HfaAlbuterol Sulfate10248
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide9736
Metformin Hcl ErMetformin Hcl9644
GabapentinGabapentin9237
OmeprazoleOmeprazole9143
Trazodone HclTrazodone Hcl8238
NaproxenNaproxen7856
HydrochlorothiazideHydrochlorothiazide7735
SimvastatinSimvastatin7531
Metoprolol TartrateMetoprolol Tartrate6932
AtenololAtenolol6727
MeloxicamMeloxicam6631
GlipizideGlipizide6530
Alendronate SodiumAlendronate Sodium6332
Pantoprazole SodiumPantoprazole Sodium6324
PradaxaDabigatran Etexilate Mesylate5817
JardianceEmpagliflozin5727
CarvedilolCarvedilol5520
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen4721
Terazosin HclTerazosin Hcl4716
Metoprolol SuccinateMetoprolol Succinate4621
Sertraline HclSertraline Hcl4217
FurosemideFurosemide4017
ClopidogrelClopidogrel Bisulfate3918
EzetimibeEzetimibe3715
Potassium ChloridePotassium Chloride3517
FinasterideFinasteride3314
Spiriva RespimatTiotropium Bromide33suppressed
SpironolactoneSpironolactone3316
Triamcinolone AcetonideTriamcinolone Acetonide3323
Insulin Glargine-YfgnInsulin Glargine-Yfgn3113
AllopurinolAllopurinol3011
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide3015
Humulin NInsulin Nph Human Isophane2914
Pioglitazone HclPioglitazone Hcl2914
Wixela InhubFluticasone Propion/Salmeterol29suppressed
Fluoxetine HclFluoxetine Hcl2713
Propranolol HclPropranolol Hcl26suppressed
LovastatinLovastatin25suppressed
MirtazapineMirtazapine25suppressed
Montelukast SodiumMontelukast Sodium2513
Adacel TdapDiph,pertuss(Acell),tet Vac/Pf2323
Duloxetine HclDuloxetine Hcl2312
Escitalopram OxalateEscitalopram Oxalate2311
CefadroxilCefadroxil2221
Donepezil HclDonepezil Hcl21suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic21suppressed
CiclopiroxCiclopirox2011
IbuprofenIbuprofen2014
Veo Insulin SyringeSyringe-Needle,insulin,0.5 Ml20suppressed
EstradiolEstradiol19suppressed
Hydroxyzine HclHydroxyzine Hcl19suppressed
Hydralazine HclHydralazine Hcl18suppressed
Memantine HclMemantine Hcl18suppressed
Betamethasone Diprop AugmentedBetamethasone/Propylene Glyc17suppressed
PrednisonePrednisone1717
EliquisApixaban16suppressed
Ipratropium BromideIpratropium Bromide16suppressed
Tramadol HclTramadol Hcl1613
AlvescoCiclesonide15suppressed
Citalopram HbrCitalopram Hydrobromide15suppressed
FenofibrateFenofibrate15suppressed
Ondansetron OdtOndansetron1513
AcyclovirAcyclovir14suppressed
NitroglycerinNitroglycerin14suppressed
Bupropion XlBupropion Hcl13suppressed
ColchicineColchicine13suppressed
Glipizide ErGlipizide13suppressed
FamotidineFamotidine12suppressed
PregabalinPregabalin12suppressed
BumetanideBumetanide11suppressed
Buspirone HclBuspirone Hcl11suppressed
Doxazosin MesylateDoxazosin Mesylate11suppressed
XareltoRivaroxaban11suppressed

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