Healthcare provider profile · identity verified

Joseph Castrejon, MD

Allopathic & Osteopathic Physicians|Family Medicine · VISTA, CA · NPI 1568486710

Profile state: payments and partd 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

CMS Open Payments records show Joseph Castrejon, MD received $459.64 in general payments during 2025 across 14 reported records.

AstraZeneca Pharmaceuticals LP accounted for 100.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 2 associated products.

AstraZeneca Pharmaceuticals LP reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 37 claims for Farxiga by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$459.64

14 reported records · 1 companies

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.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $459.64100.0%142025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$459.6414

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
AIRSUPRA
Normalized: airsupra
Drug AstraZeneca Pharmaceuticals LP $335.26 13 2025
Source payment records
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $124.38 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 FARXIGA
open payments reported associated product
CMS Open Payments — General Payments
106133 supporting records · 42906 recipient NPIs · example record 1206131362
Farxiga · 2024
Exact normalized brand match · 1 Part D row
37 14

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 Calcium32295
Metformin HclMetformin Hcl20357
Amlodipine BesylateAmlodipine Besylate14552
LisinoprilLisinopril13644
Levothyroxine SodiumLevothyroxine Sodium12234
Losartan PotassiumLosartan Potassium11232
NabumetoneNabumetone7534
Cyclobenzaprine HclCyclobenzaprine Hcl7322
GabapentinGabapentin7123
Pantoprazole SodiumPantoprazole Sodium7124
JardianceEmpagliflozin6114
FamotidineFamotidine5518
Metoprolol SuccinateMetoprolol Succinate5516
OmeprazoleOmeprazole5421
EliquisApixaban5313
HydrochlorothiazideHydrochlorothiazide5016
Potassium ChloridePotassium Chloride4716
Fluticasone PropionateFluticasone Propionate4521
OzempicSemaglutide45suppressed
Terazosin HclTerazosin Hcl4315
SimvastatinSimvastatin4114
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril37suppressed
FarxigaDapagliflozin Propanediol3714
Alendronate SodiumAlendronate Sodium3613
Trazodone HclTrazodone Hcl3613
FurosemideFurosemide3515
Albuterol Sulfate HfaAlbuterol Sulfate3417
Escitalopram OxalateEscitalopram Oxalate3412
AtenololAtenolol32suppressed
Doxazosin MesylateDoxazosin Mesylate31suppressed
Rosuvastatin CalciumRosuvastatin Calcium31suppressed
EzetimibeEzetimibe3011
FinasterideFinasteride30suppressed
CelecoxibCelecoxib29suppressed
Fluoxetine HclFluoxetine Hcl29suppressed
Hydroxyzine HclHydroxyzine Hcl2911
Tamsulosin HclTamsulosin Hcl2911
IbuprofenIbuprofen2815
Citalopram HbrCitalopram Hydrobromide26suppressed
CarvedilolCarvedilol25suppressed
MirtazapineMirtazapine25suppressed
Quetiapine FumarateQuetiapine Fumarate25suppressed
JanuviaSitagliptin Phosphate23suppressed
Donepezil HclDonepezil Hcl22suppressed
LorazepamLorazepam21suppressed
Pioglitazone HclPioglitazone Hcl21suppressed
Benazepril HclBenazepril Hcl20suppressed
ClopidogrelClopidogrel Bisulfate20suppressed
Metformin Hcl ErMetformin Hcl20suppressed
Olmesartan MedoxomilOlmesartan Medoxomil20suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2011
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip19suppressed
GlipizideGlipizide19suppressed
SpironolactoneSpironolactone19suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1914
Aripiprazole OdtAripiprazole18suppressed
Divalproex SodiumDivalproex Sodium18suppressed
Duloxetine HclDuloxetine Hcl17suppressed
Zolpidem TartrateZolpidem Tartrate16suppressed
PregabalinPregabalin15suppressed
Carbidopa-LevodopaCarbidopa/Levodopa14suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen14suppressed
Ciprofloxacin HclCiprofloxacin Hcl1311
Tolterodine Tartrate ErTolterodine Tartrate13suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter13suppressed
XareltoRivaroxaban13suppressed
AzithromycinAzithromycin1211
BaclofenBaclofen12suppressed
Breztri AerosphereBudesonide/Glycopyr/Formoterol12suppressed
Humulin RInsulin Regular, Human12suppressed
Midodrine HclMidodrine Hcl12suppressed
Promethazine-DmPromethazine/Dextromethorphan12suppressed
Sertraline HclSertraline Hcl12suppressed
AllopurinolAllopurinol11suppressed
GemfibrozilGemfibrozil11suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog11suppressed
Vilazodone HclVilazodone Hcl11suppressed

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 $459.64 · 14 records AstraZeneca Pharmaceuticals LP AIRSUPRA, BREZTRI 1
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