Healthcare provider profile · identity verified

Gustavo Calleros, MD

Allopathic & Osteopathic Physicians|Family Medicine · PASADENA, CA · NPI 1346358827

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 Gustavo Calleros, MD received $2,845.07 in general payments during 2025 across 89 reported records.

GlaxoSmithKline, LLC. accounted for 13.9% 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: Linzess, Mounjaro, Ozempic, Paxlovid.

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 34 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 SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 41 claims for Synthroid 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 FARXIGA as an associated drug or biological on 106133 records involving 42906 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Farxiga 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 68 claims for Jardiance 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 MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 17 claims for Mounjaro 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 37 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 43 claims for Eliquis 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 PAXLOVID as an associated drug or biological on 24465 records involving 15715 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Paxlovid by this doctor in 2024.

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

Payment overview · 2025

General Payments

$2,845.07

89 reported records · 21 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
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $395.0613.9%42025
Lilly USA, LLC Unresolved — no canonical attribution shown $378.4213.3%102025
Aimmune Therapeutics, Inc. Unresolved — no canonical attribution shown $371.7913.1%32025
Novo Nordisk Inc Unresolved — no canonical attribution shown $354.5312.5%122025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $228.028.0%72025
ABBVIE INC. Unresolved — no canonical attribution shown $190.716.7%172025
Lundbeck LLC Unresolved — no canonical attribution shown $184.696.5%72025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $158.045.5%32025
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) Unresolved — no canonical attribution shown $100.683.5%42025
Abbott Laboratories Unresolved — no canonical attribution shown $93.223.3%42025
Amgen Inc. Unresolved — no canonical attribution shown $70.082.5%42025
ViiV Healthcare Company Unresolved — no canonical attribution shown $51.421.8%22025
Exact Sciences Corporation Unresolved — no canonical attribution shown $43.311.5%22025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $39.291.4%22025
Corcept Therapeutics Unresolved — no canonical attribution shown $33.461.2%12025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $31.701.1%12025
Almatica Pharma LLC Unresolved — no canonical attribution shown $31.511.1%22025
PFIZER INC. Unresolved — no canonical attribution shown $24.850.9%12025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $23.640.8%12025
SANOFI PASTEUR INC. Unresolved — no canonical attribution shown $22.970.8%12025
Sumitomo Pharma America, Inc. Unresolved — no canonical attribution shown $17.680.6%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$2,845.0789

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
ZENPEP
Normalized: zenpep
Drug Aimmune Therapeutics, Inc. $371.79 3 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Lundbeck LLC, Otsuka America Pharmaceutical, Inc. $342.73 10 2025
Source payment records
AREXVY
Normalized: arexvy
Biological GlaxoSmithKline, LLC. $271.03 3 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $257.30 9 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $251.75 8 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $248.47 8 2025
Source payment records
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $228.02 7 2025
Source payment records
PENMENVY
Normalized: penmenvy
Biological GlaxoSmithKline, LLC. $124.03 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $106.06 4 2025
Source payment records
CAPLYTA
Normalized: caplyta
Drug ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) $100.68 4 2025
Source payment records
FREESTYLE LIBRE 3
Normalized: freestyle libre 3
Device Abbott Laboratories $93.22 4 2025
Source payment records
CREON
Normalized: creon
Drug ABBVIE INC. $88.33 7 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $85.48 9 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $78.19 8 2025
Source payment records
LINZESS
Normalized: linzess
Drug ABBVIE INC. $75.38 6 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $70.08 4 2025
Source payment records
APRETUDE
Normalized: apretude
Drug ViiV Healthcare Company $51.42 2 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $43.31 2 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $41.78 2 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $39.29 2 2025
Source payment records
Korlym
Normalized: korlym
Drug Corcept Therapeutics $33.46 1 2025
Source payment records
CAPVAXIVE
Normalized: capvaxive
Biological Merck Sharp & Dohme LLC $31.70 1 2025
Source payment records
GARDASIL 9
Normalized: gardasil 9
Biological Merck Sharp & Dohme LLC $31.70 1 2025
Source payment records
LOREEV XR
Normalized: loreev xr
Drug Almatica Pharma LLC $31.51 2 2025
Source payment records
PAXLOVID
Normalized: paxlovid
Drug PFIZER INC. $24.85 1 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $23.64 1 2025
Source payment records
  • 2025-11-03 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $23.64 · Open Payments source
SHINGRIX
Normalized: shingrix
Biological GlaxoSmithKline, LLC. $23.21 1 2025
Source payment records
FLUBLOK QUADRIVALENT NORTHERN HEMISPHERE
Normalized: flublok quadrivalent northern hemisphere
Biological SANOFI PASTEUR INC. $22.97 1 2025
Source payment records
GEMTESA
Normalized: gemtesa
Drug Sumitomo Pharma America, Inc. $17.68 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
LINZESS
linzess
2025 Linzess 2024 34 exact normalized Medicare Part D
MOUNJARO
mounjaro
2025 Mounjaro 2024 17
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 37
Beneficiary count suppressed
exact normalized Medicare Part D
PAXLOVID
paxlovid
2025 Paxlovid 2024 12 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
34 13
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 SYNTHROID
open payments reported associated product
CMS Open Payments — General Payments
10655 supporting records · 4881 recipient NPIs · example record 1201352636
Synthroid · 2024
Exact normalized brand match · 1 Part D row
41 suppressed by CMS
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
11 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
68 19
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
186719 supporting records · 66436 recipient NPIs · example record 1186464455
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
17 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
37 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
43 11
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 PAXLOVID
open payments reported associated product
CMS Open Payments — General Payments
24465 supporting records · 15715 recipient NPIs · example record 1228794432
Paxlovid · 2024
Exact normalized brand match · 1 Part D row
12 12

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
Amlodipine BesylateAmlodipine Besylate461136
Atorvastatin CalciumAtorvastatin Calcium454136
Metformin HclMetformin Hcl415116
Rosuvastatin CalciumRosuvastatin Calcium364118
OmeprazoleOmeprazole31695
Levothyroxine SodiumLevothyroxine Sodium31190
Losartan PotassiumLosartan Potassium29284
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen25141
Tamsulosin HclTamsulosin Hcl22667
Tramadol HclTramadol Hcl21331
Diclofenac SodiumDiclofenac Sodium20959
IbuprofenIbuprofen19858
GabapentinGabapentin19065
Pantoprazole SodiumPantoprazole Sodium18249
Zolpidem TartrateZolpidem Tartrate17537
SimvastatinSimvastatin15545
Pioglitazone HclPioglitazone Hcl15446
Benazepril HclBenazepril Hcl15240
Metoprolol SuccinateMetoprolol Succinate15044
FamotidineFamotidine14853
LisinoprilLisinopril14841
CarvedilolCarvedilol14447
LorazepamLorazepam14434
AzithromycinAzithromycin142105
Albuterol Sulfate HfaAlbuterol Sulfate13738
MeloxicamMeloxicam12849
HydrochlorothiazideHydrochlorothiazide11932
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril11831
BaclofenBaclofen11740
FurosemideFurosemide11538
Triamcinolone AcetonideTriamcinolone Acetonide11263
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide10635
AlprazolamAlprazolam10218
IrbesartanIrbesartan9421
JanuviaSitagliptin Phosphate9325
Alendronate SodiumAlendronate Sodium9129
TemazepamTemazepam9121
GlipizideGlipizide9026
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip8941
GlimepirideGlimepiride8829
Escitalopram OxalateEscitalopram Oxalate8422
Fluticasone PropionateFluticasone Propionate8233
Trazodone HclTrazodone Hcl8125
ClonazepamClonazepam7614
Montelukast SodiumMontelukast Sodium7222
Olmesartan MedoxomilOlmesartan Medoxomil7122
JardianceEmpagliflozin6819
AtenololAtenolol6619
FinasterideFinasteride6318
EzetimibeEzetimibe6117
Metformin Hcl ErMetformin Hcl6121
Oxybutynin ChlorideOxybutynin Chloride6113
Ciprofloxacin HclCiprofloxacin Hcl5650
FenofibrateFenofibrate5412
Hydralazine HclHydralazine Hcl5218
Metoprolol TartrateMetoprolol Tartrate5214
Meclizine HclMeclizine Hcl4926
Hydroxyzine HclHydroxyzine Hcl4616
PrednisonePrednisone4436
EliquisApixaban4311
Donepezil HclDonepezil Hcl4114
SynthroidLevothyroxine Sodium41suppressed
Duloxetine HclDuloxetine Hcl4013
Bupropion XlBupropion Hcl39suppressed
JanumetSitagliptin Phos/Metformin Hcl39suppressed
Potassium ChloridePotassium Chloride39suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid39suppressed
Amlodipine-ValsartanAmlodipine Besylate/Valsartan38suppressed
ClotrimazoleClotrimazole37suppressed
NaproxenNaproxen3714
Ondansetron OdtOndansetron3720
OzempicSemaglutide37suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav3630
Nebivolol HclNebivolol Hcl36suppressed
Sildenafil CitrateSildenafil Citrate36suppressed
Janumet XrSitagliptin Phos/Metformin Hcl35suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst3532
XareltoRivaroxaban35suppressed
Amlodipine-OlmesartanAmlodipine Bes/Olmesartan Med34suppressed
ClopidogrelClopidogrel Bisulfate3412
DiazepamDiazepam34suppressed
LinzessLinaclotide3413
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide34suppressed
Sumatriptan SuccinateSumatriptan Succinate34suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog33suppressed
FenofibrateFenofibrate Nanocrystallized3311
Lantus SolostarInsulin Glargine,hum.Rec.Anlog32suppressed
PregabalinPregabalin30suppressed
AllopurinolAllopurinol29suppressed
Pravastatin SodiumPravastatin Sodium29suppressed
Azelastine HclAzelastine Hcl2811
Quetiapine FumarateQuetiapine Fumarate28suppressed
LevetiracetamLevetiracetam27suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic27suppressed
Glipizide ErGlipizide26suppressed
Venlafaxine Hcl ErVenlafaxine Hcl26suppressed
Neomycin-Polymyxin-DexamethNeomycin/Polymyxin B/Dexametha2523
Sertraline HclSertraline Hcl25suppressed
Solifenacin SuccinateSolifenacin Succinate25suppressed
Tizanidine HclTizanidine Hcl25suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine2416
Fluticasone-SalmeterolFluticasone Propion/Salmeterol24suppressed
MethocarbamolMethocarbamol24suppressed
Oxybutynin Chloride ErOxybutynin Chloride24suppressed
TradjentaLinagliptin24suppressed
ValsartanValsartan24suppressed
MirtazapineMirtazapine23suppressed
Terazosin HclTerazosin Hcl23suppressed
Benazepril-HydrochlorothiazideBenazepril/Hydrochlorothiazide22suppressed
CelecoxibCelecoxib22suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate22suppressed
KetoconazoleKetoconazole22suppressed
LansoprazoleLansoprazole22suppressed
LatanoprostLatanoprost22suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen21suppressed
Amiodarone HclAmiodarone Hcl20suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide20suppressed
Nifedipine ErNifedipine20suppressed
Doxazosin MesylateDoxazosin Mesylate19suppressed
SpironolactoneSpironolactone19suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide19suppressed
ChlorthalidoneChlorthalidone18suppressed
LipitorAtorvastatin Calcium18suppressed
OlanzapineOlanzapine18suppressed
Terbinafine HclTerbinafine Hcl18suppressed
ValacyclovirValacyclovir Hcl18suppressed
MounjaroTirzepatide17suppressed
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic17suppressed
LoperamideLoperamide Hcl16suppressed
LovastatinLovastatin16suppressed
Ropinirole HclRopinirole Hcl16suppressed
CephalexinCephalexin1513
Cyclobenzaprine HclCyclobenzaprine Hcl15suppressed
GemfibrozilGemfibrozil15suppressed
LidocaineLidocaine15suppressed
Mometasone FuroateMometasone Furoate15suppressed
Novolog Mix 70-30Insulin Aspart Prot/Insuln Asp15suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl15suppressed
CarisoprodolCarisoprodol14suppressed
Enalapril MaleateEnalapril Maleate14suppressed
HydrocortisoneHydrocortisone1413
MetronidazoleMetronidazole14suppressed
Novolog FlexpenInsulin Aspart14suppressed
Acetaminophen-CodeineAcetaminophen With Codeine13suppressed
EntrestoSacubitril/Valsartan13suppressed
FluconazoleFluconazole1313
Ondansetron HclOndansetron Hcl13suppressed
Oxycodone HclOxycodone Hcl13suppressed
Paroxetine HclParoxetine Hcl13suppressed
RisperidoneRisperidone13suppressed
Citalopram HbrCitalopram Hydrobromide12suppressed
Novolog Mix 70-30 FlexpenInsulin Aspart Prot/Insuln Asp12suppressed
PaxlovidNirmatrelvir/Ritonavir1212
FarxigaDapagliflozin Propanediol11suppressed
Fluoxetine HclFluoxetine Hcl11suppressed
Icosapent EthylIcosapent Ethyl11suppressed
Memantine HclMemantine Hcl11suppressed
MethotrexateMethotrexate Sodium11suppressed
Neomycin-Polymyxin-HydrocortNeomycin/Polymyxin B/Hydrocort11suppressed
NitroglycerinNitroglycerin11suppressed
RamiprilRamipril11suppressed
RizatriptanRizatriptan Benzoate11suppressed
Ultra-Fine Nano Pen NeedlePen Needle, Diabetic11suppressed

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 $2,845.07 · 89 records GlaxoSmithKline, LLC. APRETUDE, AREXVY, BREZTRI, CAPLYTA, CAPVAXIVE, CREON, Cologuard Collection Kit, FLUBLOK QUADRIVALENT NORTHERN HEMISPHERE, FREESTYLE LIBRE 3, GARDASIL 9, GEMTESA, Kerendia, Korlym, LINZESS, LOREEV XR, MOUNJARO, Ozempic, PAXLOVID, PENMENVY, QULIPTA, REPATHA, REXULTI, Rybelsus, SHINGRIX, UBRELVY, Wegovy, XIFAXAN, ZENPEP, ZEPBOUND 8
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

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