Healthcare provider profile · identity verified

Christopher Borrero Natal, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Nephrology · PONCE, PR · NPI 1821448341

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 Christopher Borrero Natal, M.D. received $239.34 in general payments during 2025 across 5 reported records.

Calliditas Therapeutics US Inc. accounted for 55.3% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 3 associated products.

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

Boehringer Ingelheim Pharmaceuticals, 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 JARDIANCE as an associated drug or biological on 123636 records involving 49438 distinct recipient NPIs. Public Medicare Part D data also shows 222 claims for Jardiance by this doctor in 2024.

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

Payment overview · 2025

General Payments

$239.34

5 reported records · 3 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
Calliditas Therapeutics US Inc. Unresolved — no canonical attribution shown $132.3555.3%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $54.2922.7%22025
Vifor Pharma, Inc. Unresolved — no canonical attribution shown $52.7022.0%22025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$239.345

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
TARPEYO
Normalized: tarpeyo
Drug Calliditas Therapeutics US Inc. $132.35 1 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $54.29 2 2025
Source payment records
Veltassa
Normalized: veltassa
Drug Vifor Pharma, Inc. $52.70 2 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
JARDIANCE
jardiance
2025 Jardiance 2024 222 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
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
123636 supporting records · 49438 recipient NPIs · example record 1221811583
Jardiance · 2024
Exact normalized brand match · 1 Part D row
222 41

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
CarvedilolCarvedilol461108
Amlodipine BesylateAmlodipine Besylate36582
Losartan PotassiumLosartan Potassium30567
IrbesartanIrbesartan25857
Sevelamer CarbonateSevelamer Carbonate24666
FarxigaDapagliflozin Propanediol24249
JardianceEmpagliflozin22241
Atorvastatin CalciumAtorvastatin Calcium21550
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters18741
GabapentinGabapentin16044
Potassium Citrate ErPotassium Citrate14523
Rosuvastatin CalciumRosuvastatin Calcium13331
Hydralazine HclHydralazine Hcl12621
Nifedipine ErNifedipine12129
Pantoprazole SodiumPantoprazole Sodium11738
AllopurinolAllopurinol11626
Trijardy XrEmpaglifloz/Linaglip/Metformin11022
Calcium AcetateCalcium Acetate10729
FamotidineFamotidine10729
SynthroidLevothyroxine Sodium10626
CalcitriolCalcitriol9919
TradjentaLinagliptin9929
Doxazosin MesylateDoxazosin Mesylate9820
BumetanideBumetanide8826
Metformin HclMetformin Hcl8818
Metoprolol SuccinateMetoprolol Succinate8421
PrednisonePrednisone7442
Tamsulosin HclTamsulosin Hcl7119
GlyxambiEmpagliflozin/Linagliptin7017
KerendiaFinerenone6912
ClopidogrelClopidogrel Bisulfate6715
LisinoprilLisinopril6016
Levothyroxine SodiumLevothyroxine Sodium5513
LokelmaSodium Zirconium Cyclosilicate5220
Candesartan CilexetilCandesartan Cilexetil5111
GlipizideGlipizide4715
FinasterideFinasteride44suppressed
SimvastatinSimvastatin40suppressed
GlimepirideGlimepiride35suppressed
Doxycycline HyclateDoxycycline Hyclate3328
Sodium Polystyrene SulfonateSodium Polystyrene Sulfonate2914
FurosemideFurosemide2612
EzetimibeEzetimibe25suppressed
Glipizide ErGlipizide25suppressed
LactuloseLactulose25suppressed
HumalogInsulin Lispro24suppressed
Pioglitazone HclPioglitazone Hcl24suppressed
TacrolimusTacrolimus24suppressed
Montelukast SodiumMontelukast Sodium23suppressed
LantusInsulin Glargine,hum.Rec.Anlog22suppressed
OmeprazoleOmeprazole22suppressed
RamiprilRamipril21suppressed
Synjardy XrEmpagliflozin/Metformin Hcl19suppressed
RetacritEpoetin Alfa-Epbx18suppressed
TemazepamTemazepam18suppressed
Midodrine HclMidodrine Hcl17suppressed
SpironolactoneSpironolactone17suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1414
Lanthanum CarbonateLanthanum Carbonate14suppressed
Mycophenolate MofetilMycophenolate Mofetil14suppressed
Insulin LisproInsulin Lispro13suppressed
LevofloxacinLevofloxacin1313
Sertraline HclSertraline Hcl13suppressed
ClonazepamClonazepam12suppressed
Colestipol HclColestipol Hcl11suppressed
Gentamicin SulfateGentamicin Sulfate11suppressed

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 $239.34 · 5 records Calliditas Therapeutics US Inc. JARDIANCE, TARPEYO, Veltassa 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