Healthcare provider profile · identity verified

Christopher J O'Brien

Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant · NORTH SYRACUSE, NY · NPI 1780225623

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 J O'Brien received $644.85 in general payments during 2025 across 28 reported records.

Novartis Pharmaceuticals Corporation accounted for 16.3% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 14 associated products.

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

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 59 claims for Farxiga by this doctor in 2024.

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 LOKELMA as an associated drug or biological on 6897 records involving 4326 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Lokelma by this doctor in 2024.

Bayer Healthcare 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 Kerendia as an associated drug or biological on 138674 records involving 48458 distinct recipient NPIs. Public Medicare Part D data also shows 32 claims for Kerendia by this doctor in 2024.

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 41 claims for Jardiance 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 60 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

$644.85

28 reported records · 15 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
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $104.8916.3%42025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $93.4414.5%42025
Travere Therapeutics, Inc. Unresolved — no canonical attribution shown $52.728.2%22025
Amgen Inc. Unresolved — no canonical attribution shown $47.287.3%22025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $44.256.9%22025
Abbott Laboratories Unresolved — no canonical attribution shown $44.136.8%22025
Novo Nordisk Inc Unresolved — no canonical attribution shown $44.046.8%22025
Calliditas Therapeutics US Inc. Unresolved — no canonical attribution shown $43.286.7%22025
ANI Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $40.566.3%22025
Otsuka Pharmaceutical Development & Commercialization, Inc. Unresolved — no canonical attribution shown $30.564.7%12025
Ardelyx, Inc. Unresolved — no canonical attribution shown $29.504.6%12025
Aurinia Pharma U.S., Inc. Unresolved — no canonical attribution shown $23.843.7%12025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $16.382.5%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $15.122.3%12025
SCPHARMACEUTICALS INC. Unresolved — no canonical attribution shown $14.862.3%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$644.8528

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
Fabhalta
Normalized: fabhalta
Drug Novartis Pharmaceuticals Corporation $104.89 4 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $93.44 4 2025
Source payment records
TAVNEOS
Normalized: tavneos
Drug Amgen Inc. $47.28 2 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $44.25 2 2025
Source payment records
TARPEYO
Normalized: tarpeyo
Drug Calliditas Therapeutics US Inc. $43.28 2 2025
Source payment records
PURIFIED CORTROPHIN GEL
Normalized: purified cortrophin gel
Drug ANI Pharmaceuticals, Inc. $40.56 2 2025
Source payment records
IBSRELA
Normalized: ibsrela
Drug Ardelyx, Inc. $29.50 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $26.31 1 2025
Source payment records
LUPKYNIS
Normalized: lupkynis
Drug Aurinia Pharma U.S., Inc. $23.84 1 2025
Source payment records
FREESTYLE LIBRE 3
Normalized: freestyle libre 3
Device Abbott Laboratories $22.46 1 2025
Source payment records
ARCHITECT
Normalized: architect
Device Abbott Laboratories $21.67 1 2025
Source payment records
BENLYSTA
Normalized: benlysta
Biological GlaxoSmithKline, LLC. $16.38 1 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $15.12 1 2025
Source payment records
FUROSCIX
Normalized: furoscix
Drug SCPHARMACEUTICALS INC. $14.86 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
FARXIGA
farxiga
2025 Farxiga 2024 59 exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 41 exact normalized Medicare Part D
Kerendia
kerendia
2025 Kerendia 2024 32
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 60 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
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
59 18
AstraZeneca Pharmaceuticals LP
Exact reporting entity; no affiliate inference
2025 LOKELMA
open payments reported associated product
CMS Open Payments — General Payments
6897 supporting records · 4326 recipient NPIs · example record 1206131624
Lokelma · 2024
Exact normalized brand match · 1 Part D row
29 16
Bayer Healthcare Pharmaceuticals Inc.
Exact reporting entity; no affiliate inference
2025 Kerendia
open payments reported associated product
CMS Open Payments — General Payments
138674 supporting records · 48458 recipient NPIs · example record 1225434663
Kerendia · 2024
Exact normalized brand match · 1 Part D row
32 suppressed by CMS
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
41 18
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
60 18

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
FurosemideFurosemide11839
LisinoprilLisinopril10039
Amlodipine BesylateAmlodipine Besylate9335
Losartan PotassiumLosartan Potassium9136
Potassium ChloridePotassium Chloride8831
SpironolactoneSpironolactone6220
OzempicSemaglutide6018
FarxigaDapagliflozin Propanediol5918
HydrochlorothiazideHydrochlorothiazide4118
JardianceEmpagliflozin4118
TorsemideTorsemide4117
GabapentinGabapentin3812
Terazosin HclTerazosin Hcl3812
CalcitriolCalcitriol3313
KerendiaFinerenone32suppressed
LokelmaSodium Zirconium Cyclosilicate2916
Lantus SolostarInsulin Glargine,hum.Rec.Anlog28suppressed
Tamsulosin HclTamsulosin Hcl2815
AllopurinolAllopurinol2612
Calcium AcetateCalcium Acetate23suppressed
TrulicityDulaglutide21suppressed
Nifedipine ErNifedipine20suppressed
Zolpidem TartrateZolpidem Tartrate20suppressed
AlprazolamAlprazolam19suppressed
CarvedilolCarvedilol19suppressed
Glipizide ErGlipizide18suppressed
ChlorthalidoneChlorthalidone17suppressed
Metformin HclMetformin Hcl17suppressed
MetolazoneMetolazone17suppressed
Metoprolol SuccinateMetoprolol Succinate17suppressed
PregabalinPregabalin16suppressed
Rosuvastatin CalciumRosuvastatin Calcium16suppressed
Doxazosin MesylateDoxazosin Mesylate15suppressed
CephalexinCephalexin1413
IrbesartanIrbesartan14suppressed
Tramadol HclTramadol Hcl14suppressed
Atorvastatin CalciumAtorvastatin Calcium13suppressed
Pantoprazole SodiumPantoprazole Sodium13suppressed
JanuviaSitagliptin Phosphate12suppressed
Pravastatin SodiumPravastatin Sodium11suppressed

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 $644.85 · 28 records Novartis Pharmaceuticals Corporation ARCHITECT, BENLYSTA, FARXIGA, FREESTYLE LIBRE 3, FUROSCIX, Fabhalta, IBSRELA, JARDIANCE, Kerendia, LUPKYNIS, Ozempic, PURIFIED CORTROPHIN GEL, TARPEYO, TAVNEOS 5
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