Healthcare provider profile · identity verified

Lorena H Tan, MD

Allopathic & Osteopathic Physicians|Internal Medicine · LIVERMORE, CA · NPI 1417957697

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 Lorena H Tan, MD received $738.89 in general payments during 2025 across 50 reported records.

GlaxoSmithKline, LLC. accounted for 25.9% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 16 associated products.

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

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 68 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 66 claims for Farxiga 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 21 claims for Kerendia 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 76 claims for Trelegy Ellipta 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 41 claims for Ozempic 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 Rybelsus as an associated drug or biological on 161257 records involving 55409 distinct recipient NPIs. Public Medicare Part D data also shows 25 claims for Rybelsus 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 72 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 58 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

$738.89

50 reported records · 12 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 $191.2925.9%122025
MAYNE PHARMA COMMERCIAL LLC Unresolved — no canonical attribution shown $126.7517.1%182025
PFIZER INC. Unresolved — no canonical attribution shown $96.6813.1%42025
Lundbeck LLC Unresolved — no canonical attribution shown $83.2811.3%42025
Novo Nordisk Inc Unresolved — no canonical attribution shown $69.329.4%32025
ABBVIE INC. Unresolved — no canonical attribution shown $39.095.3%22025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $35.684.8%22025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $28.173.8%12025
Axsome Therapeutics, Inc. Unresolved — no canonical attribution shown $20.962.8%12025
Currax Pharmaceuticals LLC Unresolved — no canonical attribution shown $16.752.3%12025
Eisai Inc. Unresolved — no canonical attribution shown $16.242.2%12025
Exact Sciences Corporation Unresolved — no canonical attribution shown $14.682.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$738.8950

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
TRELEGY ELLIPTA
Normalized: trelegy ellipta
Drug GlaxoSmithKline, LLC. $155.56 10 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Lundbeck LLC $83.28 4 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $52.48 2 2025
Source payment records
ZAVZPRET
Normalized: zavzpret
Drug PFIZER INC. $52.48 2 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $48.83 2 2025
Source payment records
PAXLOVID
Normalized: paxlovid
Drug PFIZER INC. $44.20 2 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $39.09 2 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $39.09 2 2025
Source payment records
SHINGRIX
Normalized: shingrix
Biological GlaxoSmithKline, LLC. $35.73 2 2025
Source payment records
FARXIGA
Normalized: farxiga
Drug AstraZeneca Pharmaceuticals LP $35.68 2 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $28.17 1 2025
Source payment records
Symbravo
Normalized: symbravo
Drug Axsome Therapeutics, Inc. $20.96 1 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $20.49 1 2025
Source payment records
CONTRAVE
Normalized: contrave
Drug Currax Pharmaceuticals LLC $16.75 1 2025
Source payment records
Leqembi
Normalized: leqembi
Drug Eisai Inc. $16.24 1 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $14.68 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
FARXIGA
farxiga
2025 Farxiga 2024 66 exact normalized Medicare Part D
Kerendia
kerendia
2025 Kerendia 2024 21
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 41
Beneficiary count suppressed
exact normalized Medicare Part D
PAXLOVID
paxlovid
2025 Paxlovid 2024 58 exact normalized Medicare Part D
TRELEGY ELLIPTA
trelegy ellipta
2025 Trelegy Ellipta 2024 76 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 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
68 21
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
66 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
21 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
76 24
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
41 suppressed by CMS
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Rybelsus
open payments reported associated product
CMS Open Payments — General Payments
161257 supporting records · 55409 recipient NPIs · example record 1188130076
Rybelsus · 2024
Exact normalized brand match · 1 Part D row
25 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
72 24
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
58 57

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
Levothyroxine SodiumLevothyroxine Sodium686179
Atorvastatin CalciumAtorvastatin Calcium681200
Rosuvastatin CalciumRosuvastatin Calcium588200
Amlodipine BesylateAmlodipine Besylate581174
Losartan PotassiumLosartan Potassium490143
LisinoprilLisinopril36499
Metoprolol SuccinateMetoprolol Succinate27082
Metformin Hcl ErMetformin Hcl26087
Albuterol Sulfate HfaAlbuterol Sulfate249126
GabapentinGabapentin23587
Pantoprazole SodiumPantoprazole Sodium22874
AzithromycinAzithromycin227187
HydrochlorothiazideHydrochlorothiazide21465
Metformin HclMetformin Hcl20963
Olmesartan MedoxomilOlmesartan Medoxomil19971
CephalexinCephalexin165123
Potassium ChloridePotassium Chloride16341
AtenololAtenolol13541
Trazodone HclTrazodone Hcl12637
Escitalopram OxalateEscitalopram Oxalate12537
Pravastatin SodiumPravastatin Sodium12237
SimvastatinSimvastatin11833
AllopurinolAllopurinol11532
Tamsulosin HclTamsulosin Hcl11337
OmeprazoleOmeprazole10635
MethylprednisoloneMethylprednisolone10582
FurosemideFurosemide9924
Metoprolol TartrateMetoprolol Tartrate9527
Duloxetine HclDuloxetine Hcl9330
EzetimibeEzetimibe9134
Montelukast SodiumMontelukast Sodium8729
CarvedilolCarvedilol8428
JardianceEmpagliflozin7926
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide7921
Sertraline HclSertraline Hcl7623
Trelegy ElliptaFluticasone/Umeclidin/Vilanter7624
EliquisApixaban7224
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav6959
Bupropion XlBupropion Hcl6928
XareltoRivaroxaban6916
MeloxicamMeloxicam6829
SynthroidLevothyroxine Sodium6821
ValacyclovirValacyclovir Hcl6732
FarxigaDapagliflozin Propanediol6616
Triamcinolone AcetonideTriamcinolone Acetonide6542
Quetiapine FumarateQuetiapine Fumarate64suppressed
Doxycycline MonohydrateDoxycycline Monohydrate5849
PaxlovidNirmatrelvir/Ritonavir5857
Ciprofloxacin HclCiprofloxacin Hcl5643
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide5517
LovastatinLovastatin5412
MounjaroTirzepatide54suppressed
Alendronate SodiumAlendronate Sodium5115
Zolpidem TartrateZolpidem Tartrate5117
Fluticasone PropionateFluticasone Propionate4823
Donepezil HclDonepezil Hcl47suppressed
FamotidineFamotidine4718
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst4737
GlimepirideGlimepiride4416
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip4233
Fluoxetine HclFluoxetine Hcl41suppressed
OzempicSemaglutide41suppressed
ClopidogrelClopidogrel Bisulfate4016
VascepaIcosapent Ethyl40suppressed
GlipizideGlipizide3911
Venlafaxine Hcl ErVenlafaxine Hcl3813
FenofibrateFenofibrate Nanocrystallized37suppressed
MirtazapineMirtazapine37suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl3617
FenofibrateFenofibrate35suppressed
EszopicloneEszopiclone34suppressed
Ropinirole HclRopinirole Hcl34suppressed
Memantine HclMemantine Hcl33suppressed
SucralfateSucralfate3316
Solifenacin SuccinateSolifenacin Succinate32suppressed
FluconazoleFluconazole3121
LevoxylLevothyroxine Sodium31suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid3111
ValsartanValsartan31suppressed
Promethazine HclPromethazine Hcl3021
JanuviaSitagliptin Phosphate29suppressed
Citalopram HbrCitalopram Hydrobromide28suppressed
Meclizine HclMeclizine Hcl2819
Wixela InhubFluticasone Propion/Salmeterol28suppressed
FinasterideFinasteride27suppressed
Midodrine HclMidodrine Hcl27suppressed
Oxybutynin Chloride ErOxybutynin Chloride27suppressed
Propranolol HclPropranolol Hcl2711
RybelsusSemaglutide25suppressed
Colesevelam HclColesevelam Hcl24suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog24suppressed
Clonidine HclClonidine Hcl23suppressed
Hydralazine HclHydralazine Hcl23suppressed
SpironolactoneSpironolactone23suppressed
LevetiracetamLevetiracetam22suppressed
CelecoxibCelecoxib21suppressed
KerendiaFinerenone21suppressed
AcyclovirAcyclovir20suppressed
Dicyclomine HclDicyclomine Hcl2012
Glipizide ErGlipizide20suppressed
Humulin NInsulin Nph Human Isophane20suppressed
ProliaDenosumab2012
Raloxifene HclRaloxifene Hcl20suppressed
Amiodarone HclAmiodarone Hcl19suppressed
AmoxicillinAmoxicillin1918
Carbidopa-LevodopaCarbidopa/Levodopa19suppressed
Hydroxyzine HclHydroxyzine Hcl19suppressed
Icosapent EthylIcosapent Ethyl19suppressed
MupirocinMupirocin1916
PrednisonePrednisone1917
ChlorthalidoneChlorthalidone18suppressed
TopiramateTopiramate18suppressed
Benazepril HclBenazepril Hcl17suppressed
Doxazosin MesylateDoxazosin Mesylate17suppressed
EstradiolEstradiol17suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide17suppressed
Ondansetron OdtOndansetron1714
TemazepamTemazepam17suppressed
Diltiazem 24hr Er (Xr)Diltiazem Hcl16suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium16suppressed
Fenofibric AcidFenofibric Acid (Choline)16suppressed
Nebivolol HclNebivolol Hcl16suppressed
Omega-3 Acid Ethyl EstersOmega-3 Acid Ethyl Esters16suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide16suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril15suppressed
Buspirone HclBuspirone Hcl15suppressed
IrbesartanIrbesartan15suppressed
Tobramycin-DexamethasoneTobramycin/Dexamethasone15suppressed
AlprazolamAlprazolam1411
PregabalinPregabalin14suppressed
Ventolin HfaAlbuterol Sulfate14suppressed
Amitriptyline HclAmitriptyline Hcl13suppressed
RepaglinideRepaglinide13suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1311
AnastrozoleAnastrozole12suppressed
CholestyramineCholestyramine (With Sugar)12suppressed
Ciprofloxacin-DexamethasoneCiprofloxacin Hcl/Dexameth1211
RamiprilRamipril12suppressed
IbuprofenIbuprofen11suppressed
Labetalol HclLabetalol Hcl11suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic11suppressed
Terazosin HclTerazosin Hcl11suppressed

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 $738.89 · 50 records GlaxoSmithKline, LLC. CONTRAVE, Cologuard Collection Kit, FARXIGA, Kerendia, Leqembi, NURTEC ODT, Ozempic, PAXLOVID, QULIPTA, REXULTI, SHINGRIX, Symbravo, TRELEGY ELLIPTA, UBRELVY, Wegovy, ZAVZPRET 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

Full methodology · Questions & answers · Report a possible error