Healthcare provider profile · identity verified

Arnel C Castrence, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine · WALDORF, MD · NPI 1225092968

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 Arnel C Castrence, M.D. received $297.24 in general payments during 2025 across 13 reported records.

Amgen Inc. accounted for 22.4% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 15 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Mounjaro, Ozempic.

ABBVIE INC. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Synthroid by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 67 claims for Jardiance by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 37 claims for Mounjaro by this doctor in 2024.

Novo Nordisk Inc reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 46 claims for Ozempic by this doctor in 2024.

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

Payment overview · 2025

General Payments

$297.24

13 reported records · 10 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
Amgen Inc. Unresolved — no canonical attribution shown $66.5222.4%22025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $40.5613.7%22025
ABBVIE INC. Unresolved — no canonical attribution shown $36.1612.2%22025
Tactile Systems Technology Inc Unresolved — no canonical attribution shown $30.5510.3%12025
Neurocrine BioSciences, Inc. Unresolved — no canonical attribution shown $24.438.2%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $22.827.7%12025
Globus Medical, Inc. Unresolved — no canonical attribution shown $21.287.2%12025
Novo Nordisk Inc Unresolved — no canonical attribution shown $20.646.9%12025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $18.546.2%12025
Exact Sciences Corporation Unresolved — no canonical attribution shown $15.745.3%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$297.2413

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
REPATHA
Normalized: repatha
Biological Amgen Inc. $66.52 2 2025
Source payment records
AIRSUPRA
Normalized: airsupra
Drug AstraZeneca Pharmaceuticals LP $40.56 2 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $36.16 2 2025
Source payment records
OTEZLA
Normalized: otezla
Drug Amgen Inc. $33.81 1 2025
Source payment records
Flexitouch Plus
Normalized: flexitouch plus
Device Tactile Systems Technology Inc $30.55 1 2025
Source payment records
Nimbl
Normalized: nimbl
Device Tactile Systems Technology Inc $30.55 1 2025
Source payment records
INGREZZA
Normalized: ingrezza
Drug Neurocrine BioSciences, Inc. $24.43 1 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $22.82 1 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $22.82 1 2025
Source payment records
Senza
Normalized: senza
Device Globus Medical, Inc. $21.28 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $20.64 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $20.64 1 2025
Source payment records
LEQVIO
Normalized: leqvio
Drug Novartis Pharmaceuticals Corporation $18.54 1 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $15.74 1 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $14.74 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

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
MOUNJARO
mounjaro
2025 Mounjaro 2024 37
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 46
Beneficiary count suppressed
exact normalized Medicare Part D

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
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 SYNTHROID
open payments reported associated product
CMS Open Payments — General Payments
10655 supporting records · 4881 recipient NPIs · example record 1201352636
Synthroid · 2024
Exact normalized brand match · 1 Part D row
16 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
47708 supporting records · 23833 recipient NPIs · example record 1186464557
Jardiance · 2024
Exact normalized brand match · 1 Part D row
67 17
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
186719 supporting records · 66436 recipient NPIs · example record 1186464455
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
37 suppressed by CMS
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Ozempic
open payments reported associated product
CMS Open Payments — General Payments
261625 supporting records · 77793 recipient NPIs · example record 1188130076
Ozempic · 2024
Exact normalized brand match · 1 Part D row
46 suppressed by CMS

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 Calcium305104
Amlodipine BesylateAmlodipine Besylate23275
LisinoprilLisinopril16755
Metformin HclMetformin Hcl13846
Rosuvastatin CalciumRosuvastatin Calcium13137
Metoprolol SuccinateMetoprolol Succinate12639
Losartan PotassiumLosartan Potassium12243
SimvastatinSimvastatin7227
GabapentinGabapentin7123
Levothyroxine SodiumLevothyroxine Sodium6922
OmeprazoleOmeprazole6823
FurosemideFurosemide6727
JardianceEmpagliflozin6717
HydrochlorothiazideHydrochlorothiazide6523
Pantoprazole SodiumPantoprazole Sodium6422
Sertraline HclSertraline Hcl6418
Tamsulosin HclTamsulosin Hcl5819
AllopurinolAllopurinol5716
Cyclobenzaprine HclCyclobenzaprine Hcl5527
GlimepirideGlimepiride5317
Escitalopram OxalateEscitalopram Oxalate5112
Metoprolol TartrateMetoprolol Tartrate5014
Duloxetine HclDuloxetine Hcl4912
OzempicSemaglutide46suppressed
Trazodone HclTrazodone Hcl4514
Zolpidem TartrateZolpidem Tartrate45suppressed
EliquisApixaban4316
Pravastatin SodiumPravastatin Sodium4313
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide4111
Montelukast SodiumMontelukast Sodium4115
ValsartanValsartan4113
MounjaroTirzepatide37suppressed
ClopidogrelClopidogrel Bisulfate3512
Albuterol Sulfate HfaAlbuterol Sulfate3318
FamotidineFamotidine3311
Hydralazine HclHydralazine Hcl29suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2822
Vitamin D2Ergocalciferol (Vitamin D2)2812
AlprazolamAlprazolam2713
EzetimibeEzetimibe27suppressed
IbuprofenIbuprofen2716
Alendronate SodiumAlendronate Sodium26suppressed
GlipizideGlipizide26suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide26suppressed
NaproxenNaproxen2413
Potassium ChloridePotassium Chloride24suppressed
Propranolol HclPropranolol Hcl24suppressed
Bupropion Hcl SrBupropion Hcl23suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium22suppressed
Donepezil HclDonepezil Hcl21suppressed
Quetiapine FumarateQuetiapine Fumarate21suppressed
AtenololAtenolol20suppressed
LovastatinLovastatin20suppressed
CarvedilolCarvedilol19suppressed
FenofibrateFenofibrate,micronized19suppressed
Metformin Hcl ErMetformin Hcl19suppressed
Buspirone HclBuspirone Hcl18suppressed
JanuviaSitagliptin Phosphate18suppressed
Labetalol HclLabetalol Hcl18suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog18suppressed
Tramadol HclTramadol Hcl18suppressed
AzithromycinAzithromycin1717
Clonidine HclClonidine Hcl17suppressed
Fluticasone PropionateFluticasone Propionate17suppressed
SucralfateSucralfate17suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog16suppressed
Meclizine HclMeclizine Hcl16suppressed
MeloxicamMeloxicam16suppressed
SynthroidLevothyroxine Sodium16suppressed
TemazepamTemazepam15suppressed
Enalapril MaleateEnalapril Maleate14suppressed
MirtazapineMirtazapine14suppressed
Nifedipine ErNifedipine14suppressed
Sumatriptan SuccinateSumatriptan Succinate14suppressed
TradjentaLinagliptin14suppressed
LatanoprostLatanoprost13suppressed
Mometasone FuroateMometasone Furoate13suppressed
Ondansetron HclOndansetron Hcl13suppressed
Triamcinolone AcetonideTriamcinolone Acetonide13suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide13suppressed
Warfarin SodiumWarfarin Sodium13suppressed
Breo ElliptaFluticasone/Vilanterol12suppressed
CelecoxibCelecoxib12suppressed
ClonidineClonidine12suppressed
ColchicineColchicine12suppressed
Memantine HclMemantine Hcl12suppressed
Pioglitazone HclPioglitazone Hcl12suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid12suppressed
Varenicline TartrateVarenicline Tartrate12suppressed
Amlodipine-OlmesartanAmlodipine Bes/Olmesartan Med11suppressed
Chlordiazepoxide HclChlordiazepoxide Hcl11suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol11suppressed
LantusInsulin Glargine,hum.Rec.Anlog11suppressed
Nebivolol HclNebivolol Hcl11suppressed
Oxybutynin Chloride ErOxybutynin Chloride11suppressed
PregabalinPregabalin11suppressed
RamiprilRamipril11suppressed
SpironolactoneSpironolactone11suppressed

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 $297.24 · 13 records Amgen Inc. AIRSUPRA, Cologuard Collection Kit, Flexitouch Plus, INGREZZA, LEQVIO, MOUNJARO, Nimbl, OTEZLA, Ozempic, QULIPTA, REPATHA, Rybelsus, Senza, UBRELVY, ZEPBOUND 4
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