Healthcare provider profile · identity verified

Alexander Chun, M.D.

Allopathic & Osteopathic Physicians|General Practice · NEW YORK, NY · NPI 1770592685

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 Alexander Chun, M.D. received $3,270.79 in general payments during 2025 across 146 reported records.

ABBVIE INC. accounted for 17.4% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 29 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Biktarvy, Dovato, Linzess, Rinvoq, Xifaxan.

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 LINZESS as an associated drug or biological on 87954 records involving 21815 distinct recipient NPIs. Public Medicare Part D data also shows 23 claims for Linzess by this doctor in 2024.

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 QULIPTA as an associated drug or biological on 298617 records involving 58957 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Qulipta by this doctor in 2024.

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 RINVOQ as an associated drug or biological on 279238 records involving 34343 distinct recipient NPIs. Public Medicare Part D data also shows 15 claims for Rinvoq by this doctor in 2024.

Gilead Sciences, 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 Biktarvy as an associated drug or biological on 8065 records involving 2759 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Biktarvy 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 15 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 22 claims for Ozempic by this doctor in 2024.

PFIZER 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 ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 25 claims for Eliquis by this doctor in 2024.

Salix Pharmaceuticals, a division of Bausch Health US, 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 XIFAXAN as an associated drug or biological on 101901 records involving 33018 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Xifaxan by this doctor in 2024.

Takeda Pharmaceuticals U.S.A., 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 GATTEX as an associated drug or biological on 5737 records involving 3682 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Gattex by this doctor in 2024.

ViiV Healthcare Company reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported DOVATO as an associated drug or biological on 18732 records involving 3540 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Dovato by this doctor in 2024.

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

Payment overview · 2025

General Payments

$3,270.79

146 reported records · 22 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
ABBVIE INC. Unresolved — no canonical attribution shown $567.8817.4%272025
Gilead Sciences, Inc. Unresolved — no canonical attribution shown $561.2817.2%252025
QOL Medical, LLC Unresolved — no canonical attribution shown $441.2413.5%112025
ViiV Healthcare Company Unresolved — no canonical attribution shown $273.408.4%112025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $210.666.4%102025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $205.706.3%172025
Ardelyx, Inc. Unresolved — no canonical attribution shown $179.255.5%72025
Celltrion USA Inc. Unresolved — no canonical attribution shown $178.505.5%82025
Novo Nordisk Inc Unresolved — no canonical attribution shown $169.745.2%82025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $89.542.7%52025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $61.791.9%22025
Exact Sciences Corporation Unresolved — no canonical attribution shown $45.441.4%22025
Lilly USA, LLC Unresolved — no canonical attribution shown $42.551.3%22025
GENZYME CORPORATION Unresolved — no canonical attribution shown $36.201.1%12025
Intra-Sana Laboratories Unresolved — no canonical attribution shown $35.471.1%22025
Regeneron Healthcare Solutions, Inc. Unresolved — no canonical attribution shown $31.190.9%12025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $29.190.9%12025
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $25.990.8%22025
VIVUS LLC Unresolved — no canonical attribution shown $25.620.8%12025
Intercept Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $21.050.6%12025
PFIZER INC. Unresolved — no canonical attribution shown $20.790.6%12025
Bavarian Nordic A/S Unresolved — no canonical attribution shown $18.320.6%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$3,270.79146

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
Sucraid
Normalized: sucraid
Drug QOL Medical, LLC $441.24 11 2025
Source payment records
RINVOQ
Normalized: rinvoq
Biological ABBVIE INC. $285.71 14 2025
Source payment records
SKYRIZI
Normalized: skyrizi
Biological ABBVIE INC. $285.71 14 2025
Source payment records
CREON
Normalized: creon
Drug ABBVIE INC. $239.07 11 2025
Source payment records
ENTYVIO
Normalized: entyvio
Biological Takeda Pharmaceuticals U.S.A., Inc. $210.66 10 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $205.70 17 2025
Source payment records
  • 2025-02-05 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $19.78 · Open Payments source
  • 2025-02-05 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $3.94 · Open Payments source
  • 2025-02-28 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $18.94 · Open Payments source
  • 2025-03-13 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $7.98 · Open Payments source
  • 2025-03-13 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $13.24 · Open Payments source
  • 2025-04-07 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $13.43 · Open Payments source
  • 2025-05-12 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $11.12 · Open Payments source
  • 2025-05-12 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $7.31 · Open Payments source
  • 2025-08-25 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $14.58 · Open Payments source
  • 2025-08-25 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $3.09 · Open Payments source
  • 2025-09-02 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $1.31 · Open Payments source
  • 2025-09-02 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $19.69 · Open Payments source
  • 2025-09-16 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $18.80 · Open Payments source
  • 2025-09-16 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $4.91 · Open Payments source
  • 2025-10-06 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $20.76 · Open Payments source
  • 2025-10-06 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $4.08 · Open Payments source
  • 2025-12-09 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $22.74 · Open Payments source
IBSRELA
Normalized: ibsrela
Drug Ardelyx, Inc. $179.25 7 2025
Source payment records
DOVATO
Normalized: dovato
Drug ViiV Healthcare Company $179.23 8 2025
Source payment records
LINZESS
Normalized: linzess
Drug ABBVIE INC. $179.17 8 2025
Source payment records
VEGZELMA
Normalized: vegzelma
Biological Celltrion USA Inc. $178.50 8 2025
Source payment records
Biktarvy
Normalized: biktarvy
Drug Gilead Sciences, Inc. $137.63 5 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $97.85 5 2025
Source payment records
APRETUDE
Normalized: apretude
Drug ViiV Healthcare Company $94.17 3 2025
Source payment records
DUPIXENT
Normalized: dupixent
Biological GENZYME CORPORATION, Regeneron Healthcare Solutions, Inc. $67.39 2 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $65.31 4 2025
Source payment records
TREMFYA
Normalized: tremfya
Drug Janssen Biotech, Inc. $61.79 2 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $45.44 2 2025
Source payment records
OMVOH
Normalized: omvoh
Drug Lilly USA, LLC $42.55 2 2025
Source payment records
GLYCATE
Normalized: glycate
Drug Intra-Sana Laboratories $35.47 2 2025
Source payment records
RELTONE 200 MG
Normalized: reltone 200 mg
Drug Intra-Sana Laboratories $35.47 2 2025
Source payment records
RELTONE 400 MG
Normalized: reltone 400 mg
Drug Intra-Sana Laboratories $35.47 2 2025
Source payment records
PIFELTRO
Normalized: pifeltro
Drug Merck Sharp & Dohme LLC $29.19 1 2025
Source payment records
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $25.99 2 2025
Source payment records
QSYMIA
Normalized: qsymia
Drug VIVUS LLC $25.62 1 2025
Source payment records
MAVYRET
Normalized: mavyret
Drug ABBVIE INC. $24.50 1 2025
Source payment records
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $24.23 1 2025
Source payment records
OCALIVA
Normalized: ocaliva
Drug Intercept Pharmaceuticals, Inc. $21.05 1 2025
Source payment records
VELSIPITY
Normalized: velsipity
Drug PFIZER INC. $20.79 1 2025
Source payment records
Vivotif
Normalized: vivotif
Drug Bavarian Nordic A/S $18.32 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
Biktarvy
biktarvy
2025 Biktarvy 2024 16
Beneficiary count suppressed
exact normalized Medicare Part D
DOVATO
dovato
2025 Dovato 2024 11
Beneficiary count suppressed
exact normalized Medicare Part D
LINZESS
linzess
2025 Linzess 2024 23
Beneficiary count suppressed
exact normalized Medicare Part D
RINVOQ
rinvoq
2025 Rinvoq 2024 15
Beneficiary count suppressed
exact normalized Medicare Part D
XIFAXAN
xifaxan
2025 Xifaxan 2024 11
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 LINZESS
open payments reported associated product
CMS Open Payments — General Payments
87954 supporting records · 21815 recipient NPIs · example record 1201352608
Linzess · 2024
Exact normalized brand match · 1 Part D row
23 suppressed by CMS
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 QULIPTA
open payments reported associated product
CMS Open Payments — General Payments
298617 supporting records · 58957 recipient NPIs · example record 1201352530
Qulipta · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 RINVOQ
open payments reported associated product
CMS Open Payments — General Payments
279238 supporting records · 34343 recipient NPIs · example record 1201352600
Rinvoq · 2024
Exact normalized brand match · 1 Part D row
15 suppressed by CMS
Gilead Sciences, Inc.
Exact reporting entity; no affiliate inference
2025 Biktarvy
open payments reported associated product
CMS Open Payments — General Payments
8065 supporting records · 2759 recipient NPIs · example record 1234350766
Biktarvy · 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
15 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
22 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
87112 supporting records · 36032 recipient NPIs · example record 1228794063
Eliquis · 2024
Exact normalized brand match · 1 Part D row
25 suppressed by CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC
Exact reporting entity; no affiliate inference
2025 XIFAXAN
open payments reported associated product
CMS Open Payments — General Payments
101901 supporting records · 33018 recipient NPIs · example record 1231775337
Xifaxan · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
Takeda Pharmaceuticals U.S.A., Inc.
Exact reporting entity; no affiliate inference
2025 GATTEX
open payments reported associated product
CMS Open Payments — General Payments
5737 supporting records · 3682 recipient NPIs · example record 1223616328
Gattex · 2024
Exact normalized brand match · 1 Part D row
14 suppressed by CMS
ViiV Healthcare Company
Exact reporting entity; no affiliate inference
2025 DOVATO
open payments reported associated product
CMS Open Payments — General Payments
18732 supporting records · 3540 recipient NPIs · example record 1189508902
Dovato · 2024
Exact normalized brand match · 1 Part D row
11 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
Pantoprazole SodiumPantoprazole Sodium19156
Amlodipine BesylateAmlodipine Besylate12141
Metformin HclMetformin Hcl10327
Atorvastatin CalciumAtorvastatin Calcium8529
FamotidineFamotidine7530
Rosuvastatin CalciumRosuvastatin Calcium7524
Losartan PotassiumLosartan Potassium6723
Levothyroxine SodiumLevothyroxine Sodium6116
AlprazolamAlprazolam5623
Tamsulosin HclTamsulosin Hcl5416
Metoprolol SuccinateMetoprolol Succinate5019
Zolpidem TartrateZolpidem Tartrate5016
Mesalamine ErMesalamine41suppressed
AzithromycinAzithromycin3730
LisinoprilLisinopril37suppressed
AllopurinolAllopurinol3512
MeloxicamMeloxicam3415
OmeprazoleOmeprazole3413
Oxycodone HclOxycodone Hcl33suppressed
Tramadol HclTramadol Hcl3312
ClonazepamClonazepam32suppressed
Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates3231
GabapentinGabapentin3111
MesalamineMesalamine31suppressed
Gavilyte-GPeg3350/Sod Sulf,bicarb,cl/Kcl2928
EliquisApixaban25suppressed
PrednisonePrednisone2512
ClenpiqSod Picosulf/Mag Ox/Citric Ac2320
LinzessLinaclotide23suppressed
OzempicSemaglutide22suppressed
Ciprofloxacin HclCiprofloxacin Hcl2116
DiazepamDiazepam21suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium21suppressed
HydrochlorothiazideHydrochlorothiazide21suppressed
Albuterol Sulfate HfaAlbuterol Sulfate20suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine20suppressed
FinasterideFinasteride20suppressed
FluconazoleFluconazole20suppressed
Propranolol HclPropranolol Hcl20suppressed
SimvastatinSimvastatin20suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1914
AtenololAtenolol19suppressed
FurosemideFurosemide19suppressed
Acetaminophen-CodeineAcetaminophen With Codeine18suppressed
Montelukast SodiumMontelukast Sodium18suppressed
FenofibrateFenofibrate Nanocrystallized17suppressed
Folic AcidFolic Acid17suppressed
Triamcinolone AcetonideTriamcinolone Acetonide17suppressed
BiktarvyBictegrav/Emtricit/Tenofov Ala16suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine16suppressed
Escitalopram OxalateEscitalopram Oxalate16suppressed
LorazepamLorazepam16suppressed
Metoclopramide HclMetoclopramide Hcl16suppressed
MetronidazoleMetronidazole16suppressed
Potassium ChloridePotassium Chloride16suppressed
Trazodone HclTrazodone Hcl16suppressed
Cefpodoxime ProxetilCefpodoxime Proxetil1511
CefuroximeCefuroxime Axetil1512
JardianceEmpagliflozin15suppressed
KetoconazoleKetoconazole15suppressed
Meclizine HclMeclizine Hcl15suppressed
RinvoqUpadacitinib15suppressed
AcyclovirAcyclovir14suppressed
Doxazosin MesylateDoxazosin Mesylate14suppressed
GattexTeduglutide14suppressed
HydrocortisoneHydrocortisone14suppressed
LoperamideLoperamide Hcl14suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide12suppressed
ZaleplonZaleplon12suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl11suppressed
Donepezil HclDonepezil Hcl11suppressed
DovatoDolutegravir Sodium/Lamivudine11suppressed
Fluticasone PropionateFluticasone Propionate11suppressed
GlimepirideGlimepiride11suppressed
LactuloseLactulose11suppressed
LevofloxacinLevofloxacin11suppressed
QuliptaAtogepant11suppressed
SulfasalazineSulfasalazine11suppressed
XifaxanRifaximin11suppressed

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 $3,270.79 · 146 records ABBVIE INC. APRETUDE, BREZTRI, Biktarvy, CREON, Cologuard Collection Kit, DOVATO, DUPIXENT, ENTYVIO, FARXIGA, GLYCATE, IBSRELA, LINZESS, MAVYRET, OCALIVA, OMVOH, PIFELTRO, QSYMIA, RELTONE 200 MG, RELTONE 400 MG, RINVOQ, SKYRIZI, Sucraid, TREMFYA, VEGZELMA, VELSIPITY, VOQUEZNA, Vivotif, Wegovy, XIFAXAN 10
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