Healthcare provider profile · identity verified

Mark W. Li, M.D.

Allopathic & Osteopathic Physicians|General Practice · HACIENDA HTS, CA · NPI 1356375059

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 Mark W. Li, M.D. received $1,238.34 in general payments during 2025 across 28 reported records.

Gilead Sciences, Inc. accounted for 44.7% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 7 associated products.

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

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 Vemlidy as an associated drug or biological on 782 records involving 554 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Vemlidy by this doctor in 2024.

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

Payment overview · 2025

General Payments

$1,238.34

28 reported records · 7 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
Gilead Sciences, Inc. Unresolved — no canonical attribution shown $554.0544.7%182025
Novo Nordisk Inc Unresolved — no canonical attribution shown $177.5614.3%32025
Amgen Inc. Unresolved — no canonical attribution shown $175.0014.1%12025
Phathom Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $159.8012.9%32025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $125.0010.1%12025
Intercept Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $23.751.9%12025
Kowa Pharmaceuticals America, Inc. Unresolved — no canonical attribution shown $23.181.9%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,043.3526
Consulting Fee$175.001
Education$19.991

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
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $177.56 3 2025
Source payment records
PROLIA
Normalized: prolia
Biological Amgen Inc. $175.00 1 2025
Source payment records
VOQUEZNA
Normalized: voquezna
Drug Phathom Pharmaceuticals, Inc. $159.80 3 2025
Source payment records
BREZTRI
Normalized: breztri
Drug AstraZeneca Pharmaceuticals LP $125.00 1 2025
Source payment records
Vemlidy
Normalized: vemlidy
Drug Gilead Sciences, Inc. $125.00 1 2025
Source payment records
OCALIVA
Normalized: ocaliva
Drug Intercept Pharmaceuticals, Inc. $23.75 1 2025
Source payment records
ZORYVE
Normalized: zoryve
Drug Kowa Pharmaceuticals America, Inc. $23.18 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
Vemlidy
vemlidy
2025 Vemlidy 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
Gilead Sciences, Inc.
Exact reporting entity; no affiliate inference
2025 Vemlidy
open payments reported associated product
CMS Open Payments — General Payments
782 supporting records · 554 recipient NPIs · example record 1234350906
Vemlidy · 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
OmeprazoleOmeprazole603298
SucralfateSucralfate359177
Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates248246
Amlodipine BesylateAmlodipine Besylate20933
Atorvastatin CalciumAtorvastatin Calcium15531
LevetiracetamLevetiracetam15215
Levothyroxine SodiumLevothyroxine Sodium14524
FamotidineFamotidine12044
Alendronate SodiumAlendronate Sodium9913
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate9011
Losartan PotassiumLosartan Potassium8820
RisperidoneRisperidone82suppressed
Pantoprazole SodiumPantoprazole Sodium6321
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid58suppressed
Carbamazepine ErCarbamazepine56suppressed
MeloxicamMeloxicam5615
Benztropine MesylateBenztropine Mesylate50suppressed
Quetiapine FumarateQuetiapine Fumarate49suppressed
EliquisApixaban48suppressed
Fluticasone PropionateFluticasone Propionate48suppressed
Metformin HclMetformin Hcl48suppressed
Sodium ChlorideSodium Chloride Irrig Solution46suppressed
Gavilyte-GPeg3350/Sod Sulf,bicarb,cl/Kcl4545
CarvedilolCarvedilol44suppressed
Tamsulosin HclTamsulosin Hcl43suppressed
Potassium ChloridePotassium Chloride41suppressed
Trazodone HclTrazodone Hcl41suppressed
CarbamazepineCarbamazepine40suppressed
LacosamideLacosamide40suppressed
HydrocortisoneHydrocortisone3918
Megestrol AcetateMegestrol Acetate36suppressed
VascepaIcosapent Ethyl36suppressed
Pravastatin SodiumPravastatin Sodium34suppressed
AmoxicillinAmoxicillin3229
BudesonideBudesonide31suppressed
SimvastatinSimvastatin31suppressed
Enalapril MaleateEnalapril Maleate30suppressed
Metoprolol SuccinateMetoprolol Succinate30suppressed
AtenololAtenolol29suppressed
EnuloseLactulose29suppressed
Divalproex SodiumDivalproex Sodium28suppressed
GabapentinGabapentin27suppressed
LivaloPitavastatin Calcium26suppressed
Olmesartan MedoxomilOlmesartan Medoxomil26suppressed
OxcarbazepineOxcarbazepine26suppressed
LorazepamLorazepam25suppressed
TopiramateTopiramate25suppressed
LinzessLinaclotide24suppressed
LisinoprilLisinopril24suppressed
Valproic AcidValproic Acid (As Sodium Salt)24suppressed
ClarithromycinClarithromycin2321
Esomeprazole MagnesiumEsomeprazole Magnesium23suppressed
AptiomEslicarbazepine Acetate22suppressed
ClonazepamClonazepam22suppressed
HydrochlorothiazideHydrochlorothiazide22suppressed
Metoclopramide HclMetoclopramide Hcl21suppressed
ScopolamineScopolamine21suppressed
Azelastine HclAzelastine Hcl20suppressed
Dexlansoprazole DrDexlansoprazole20suppressed
FinasterideFinasteride20suppressed
Fluoxetine HclFluoxetine Hcl20suppressed
FurosemideFurosemide20suppressed
AripiprazoleAripiprazole19suppressed
Rosuvastatin CalciumRosuvastatin Calcium19suppressed
Clonidine HclClonidine Hcl18suppressed
Montelukast SodiumMontelukast Sodium18suppressed
Triamcinolone AcetonideTriamcinolone Acetonide18suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl17suppressed
LactuloseLactulose17suppressed
SulfasalazineSulfasalazine16suppressed
Enoxaparin SodiumEnoxaparin Sodium15suppressed
Icosapent EthylIcosapent Ethyl15suppressed
Metformin Hcl ErMetformin Hcl15suppressed
MyrbetriqMirabegron15suppressed
Carbidopa-LevodopaCarbidopa/Levodopa14suppressed
Ondansetron OdtOndansetron14suppressed
PhenytoinPhenytoin14suppressed
BumetanideBumetanide13suppressed
Bupropion Hcl SrBupropion Hcl13suppressed
Carbidopa-Levodopa ErCarbidopa/Levodopa13suppressed
CilostazolCilostazol13suppressed
ClobazamClobazam13suppressed
Flecainide AcetateFlecainide Acetate13suppressed
Hydroxychloroquine SulfateHydroxychloroquine Sulfate13suppressed
NystatinNystatin13suppressed
Oxybutynin Chloride ErOxybutynin Chloride13suppressed
Paroxetine HclParoxetine Hcl13suppressed
BaclofenBaclofen12suppressed
ClopidogrelClopidogrel Bisulfate12suppressed
FenofibrateFenofibrate12suppressed
GemfibrozilGemfibrozil12suppressed
KetoconazoleKetoconazole12suppressed
Nifedipine ErNifedipine12suppressed
OlanzapineOlanzapine12suppressed
PhenobarbitalPhenobarbital12suppressed
Phenytoin Sodium ExtendedPhenytoin Sodium Extended12suppressed
RexultiBrexpiprazole12suppressed
Tramadol HclTramadol Hcl12suppressed
ZenpepLipase/Protease/Amylase12suppressed
AzithromycinAzithromycin11suppressed
Breo ElliptaFluticasone/Vilanterol11suppressed
IbuprofenIbuprofen11suppressed
Klor-Con M20Potassium Chloride11suppressed
VemlidyTenofovir Alafenamide11suppressed
Verapamil ErVerapamil 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 $1,238.34 · 28 records Gilead Sciences, Inc. BREZTRI, OCALIVA, PROLIA, VOQUEZNA, Vemlidy, Wegovy, ZORYVE 1
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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