Healthcare provider profile · identity verified

Rainier Castro

Nurse Practitioner · BRONX, NY · NPI 1063113546

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 Calcium25237
Amlodipine BesylateAmlodipine Besylate16124
LisinoprilLisinopril12615
Losartan PotassiumLosartan Potassium11114
Levothyroxine SodiumLevothyroxine Sodium8812
GabapentinGabapentin8311
Tamsulosin HclTamsulosin Hcl8115
Metformin HclMetformin Hcl7312
LevetiracetamLevetiracetam70suppressed
Quetiapine FumarateQuetiapine Fumarate63suppressed
Hydralazine HclHydralazine Hcl61suppressed
FamotidineFamotidine58suppressed
FurosemideFurosemide58suppressed
LactuloseLactulose57suppressed
Metoprolol SuccinateMetoprolol Succinate56suppressed
EliquisApixaban53suppressed
Memantine HclMemantine Hcl49suppressed
Pantoprazole SodiumPantoprazole Sodium48suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog43suppressed
Nifedipine ErNifedipine43suppressed
Montelukast SodiumMontelukast Sodium41suppressed
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate40suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate38suppressed
JanuviaSitagliptin Phosphate38suppressed
Donepezil HclDonepezil Hcl36suppressed
Metoprolol TartrateMetoprolol Tartrate35suppressed
SantylCollagenase Clostridium Hist.34suppressed
ClopidogrelClopidogrel Bisulfate33suppressed
MirtazapineMirtazapine33suppressed
Valproic AcidValproic Acid (As Sodium Salt)33suppressed
Ipratropium BromideIpratropium Bromide31suppressed
Paroxetine HclParoxetine Hcl31suppressed
EntrestoSacubitril/Valsartan30suppressed
Insulin Aspart FlexpenInsulin Aspart30suppressed
OlanzapineOlanzapine30suppressed
HydrochlorothiazideHydrochlorothiazide27suppressed
JardianceEmpagliflozin27suppressed
Albuterol SulfateAlbuterol Sulfate26suppressed
FinasterideFinasteride26suppressed
Metformin Hcl ErMetformin Hcl24suppressed
Venlafaxine Hcl ErVenlafaxine Hcl24suppressed
Sodium Chloride0.9 % Sodium Chloride2311
Escitalopram OxalateEscitalopram Oxalate21suppressed
Sertraline HclSertraline Hcl21suppressed
Carbidopa-LevodopaCarbidopa/Levodopa20suppressed
Citalopram HbrCitalopram Hydrobromide20suppressed
Fluoxetine HclFluoxetine Hcl20suppressed
LatanoprostLatanoprost19suppressed
RexultiBrexpiprazole19suppressed
AmantadineAmantadine Hcl18suppressed
Doxazosin MesylateDoxazosin Mesylate18suppressed
KetoconazoleKetoconazole18suppressed
LorazepamLorazepam18suppressed
ClonazepamClonazepam17suppressed
BaclofenBaclofen16suppressed
Bupropion Hcl SrBupropion Hcl15suppressed
RamiprilRamipril15suppressed
GlipizideGlipizide14suppressed
GlycopyrrolateGlycopyrrolate14suppressed
HydroxyureaHydroxyurea14suppressed
MupirocinMupirocin14suppressed
PhenytoinPhenytoin14suppressed
RisperidoneRisperidone14suppressed
SimvastatinSimvastatin14suppressed
Carbamazepine ErCarbamazepine13suppressed
IbuprofenIbuprofen13suppressed
Labetalol HclLabetalol Hcl13suppressed
Meclizine HclMeclizine Hcl13suppressed
Carbidopa-Levodopa ErCarbidopa/Levodopa12suppressed
CarvedilolCarvedilol12suppressed
Hydroxyzine HclHydroxyzine Hcl12suppressed
Acetazolamide ErAcetazolamide11suppressed
Enoxaparin SodiumEnoxaparin Sodium11suppressed
LokelmaSodium Zirconium Cyclosilicate11suppressed
PrimidonePrimidone11suppressed
RivastigmineRivastigmine Tartrate11suppressed
SsdSilver Sulfadiazine11suppressed
Triamcinolone AcetonideTriamcinolone Acetonide11suppressed

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