Healthcare provider profile · identity verified

Lorelei Natasha Bourla, M.D.

Allopathic & Osteopathic Physicians|Allergy & Immunology · SARATOGA SPRINGS, NY · NPI 1144649260

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 Lorelei Natasha Bourla, M.D. received $426.41 in general payments during 2025 across 20 reported records.

Regeneron Healthcare Solutions, Inc. accounted for 32.7% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 10 associated products.

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

CSL Behring reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported Hizentra as an associated drug or biological on 13634 records involving 4691 distinct recipient NPIs. Public Medicare Part D data also shows 18 claims for Hizentra by this doctor in 2024.

GlaxoSmithKline, 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 TRELEGY ELLIPTA as an associated drug or biological on 131532 records involving 37148 distinct recipient NPIs. Public Medicare Part D data also shows 168 claims for Trelegy Ellipta by this doctor in 2024.

Novartis Pharmaceuticals Corporation reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported XOLAIR as an associated drug or biological on 5293 records involving 2861 distinct recipient NPIs. Public Medicare Part D data also shows 47 claims for Xolair by this doctor in 2024.

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

Payment overview · 2025

General Payments

$426.41

20 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
Regeneron Healthcare Solutions, Inc. Unresolved — no canonical attribution shown $139.5632.7%52025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $60.8914.3%32025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $51.1212.0%22025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $35.188.2%22025
ARS Pharmaceuticals Operations, Inc. Unresolved — no canonical attribution shown $29.116.8%12025
ADMA BioManufacturing LLC Unresolved — no canonical attribution shown $26.746.3%32025
Amgen Inc. Unresolved — no canonical attribution shown $26.016.1%12025
CSL Behring Unresolved — no canonical attribution shown $24.935.8%12025
Viatris Specialty LLC Unresolved — no canonical attribution shown $16.773.9%12025
Pharming Healthcare, Inc. Unresolved — no canonical attribution shown $16.103.8%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$399.6717
Consulting Fee$26.743

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
DUPIXENT
Normalized: dupixent
Biological Regeneron Healthcare Solutions, Inc. $139.56 5 2025
Source payment records
NUCALA
Normalized: nucala
Biological GlaxoSmithKline, LLC. $51.12 2 2025
Source payment records
TEZSPIRE
Normalized: tezspire
Biological Amgen Inc., AstraZeneca Pharmaceuticals LP $45.18 2 2025
Source payment records
NEFFY
Normalized: neffy
Drug ARS Pharmaceuticals Operations, Inc. $29.11 1 2025
Source payment records
Hizentra
Normalized: hizentra
Biological CSL Behring $24.93 1 2025
Source payment records
FASENRA
Normalized: fasenra
Biological AstraZeneca Pharmaceuticals LP $18.80 1 2025
Source payment records
XOLAIR
Normalized: xolair
Drug Novartis Pharmaceuticals Corporation $18.54 1 2025
Source payment records
YUPELRI
Normalized: yupelri
Drug Viatris Specialty LLC $16.77 1 2025
Source payment records
Rhapsido
Normalized: rhapsido
Drug Novartis Pharmaceuticals Corporation $16.64 1 2025
Source payment records
RUCONEST
Normalized: ruconest
Biological Pharming Healthcare, Inc. $16.10 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
Hizentra
hizentra
2025 Hizentra 2024 18
Beneficiary count suppressed
exact normalized Medicare Part D
XOLAIR
xolair
2025 Xolair 2024 47
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
CSL Behring
Exact reporting entity; no affiliate inference
2025 Hizentra
open payments reported associated product
CMS Open Payments — General Payments
13634 supporting records · 4691 recipient NPIs · example record 1232339012
Hizentra · 2024
Exact normalized brand match · 1 Part D row
18 suppressed by CMS
GlaxoSmithKline, LLC.
Exact reporting entity; no affiliate inference
2025 TRELEGY ELLIPTA
open payments reported associated product
CMS Open Payments — General Payments
131532 supporting records · 37148 recipient NPIs · example record 1190332369
Trelegy Ellipta · 2024
Exact normalized brand match · 1 Part D row
168 29
Novartis Pharmaceuticals Corporation
Exact reporting entity; no affiliate inference
2025 XOLAIR
open payments reported associated product
CMS Open Payments — General Payments
5293 supporting records · 2861 recipient NPIs · example record 1200005083
Xolair · 2024
Exact normalized brand match · 1 Part D row
47 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
Trelegy ElliptaFluticasone/Umeclidin/Vilanter16829
Azelastine HclAzelastine Hcl9428
Dupixent PenDupilumab7612
Albuterol Sulfate HfaAlbuterol Sulfate7526
Montelukast SodiumMontelukast Sodium6920
Fluticasone PropionateFluticasone Propionate6826
PrednisonePrednisone6347
XolairOmalizumab47suppressed
FamotidineFamotidine44suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate4012
Triamcinolone AcetonideTriamcinolone Acetonide3218
Spiriva RespimatTiotropium Bromide28suppressed
Ipratropium BromideIpratropium Bromide2512
AzithromycinAzithromycin2011
BreynaBudesonide/Formoterol Fumarate20suppressed
EpinephrineEpinephrine1815
Fluticasone-SalmeterolFluticasone Propion/Salmeterol18suppressed
HizentraImmun Glob G(Igg)/Pro/Iga 0-5018suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1514
OmeprazoleOmeprazole14suppressed
Advair HfaFluticasone Propion/Salmeterol13suppressed
Arnuity ElliptaFluticasone Furoate12suppressed
Hydroxyzine HclHydroxyzine Hcl12suppressed

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 $426.41 · 20 records Regeneron Healthcare Solutions, Inc. DUPIXENT, FASENRA, Hizentra, NEFFY, NUCALA, RUCONEST, Rhapsido, TEZSPIRE, XOLAIR, YUPELRI 3
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