Healthcare provider profile · identity verified

Robert Liu

Physician Assistants & Advanced Practice Nursing Providers|Physician Assistant · LOMA LINDA, CA · NPI 1578135760

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 Robert Liu received $5,198.75 in general payments during 2025 across 16 reported records.

GENZYME CORPORATION accounted for 91.5% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 5 associated products.

Genentech USA, 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 Xolair as an associated drug or biological on 11057 records involving 4008 distinct recipient NPIs. Public Medicare Part D data also shows 26 claims for Xolair 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 401 claims for Trelegy Ellipta by this doctor in 2024.

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

Payment overview · 2025

General Payments

$5,198.75

16 reported records · 6 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
GENZYME CORPORATION Unresolved — no canonical attribution shown $4,759.2791.5%112025
Verona Pharma, Inc. Unresolved — no canonical attribution shown $125.002.4%12025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $124.892.4%12025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $121.822.3%12025
JAZZ PHARMACEUTICALS INC. Unresolved — no canonical attribution shown $38.890.8%12025
Genentech USA, Inc. Unresolved — no canonical attribution shown $28.880.6%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Consulting Fee$2,532.001
Travel and Lodging$1,575.033
Food and Beverage$1,091.7212

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
DUPIXENT
Normalized: dupixent
Biological GENZYME CORPORATION $355.01 5 2025
Source payment records
Ohtuvayre
Normalized: ohtuvayre
Drug Verona Pharma, Inc. $125.00 1 2025
Source payment records
WINREVAIR
Normalized: winrevair
Biological Merck Sharp & Dohme LLC $124.89 1 2025
Source payment records
NUCALA
Normalized: nucala
Biological GlaxoSmithKline, LLC. $121.82 1 2025
Source payment records
XYWAV
Normalized: xywav
Drug JAZZ PHARMACEUTICALS INC. $38.89 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

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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
Genentech USA, Inc.
Exact reporting entity; no affiliate inference
2025 Xolair
open payments reported associated product
CMS Open Payments — General Payments
11057 supporting records · 4008 recipient NPIs · example record 1211488440
Xolair · 2024
Exact normalized brand match · 1 Part D row
26 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
401 89

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
Albuterol Sulfate HfaAlbuterol Sulfate489201
Trelegy ElliptaFluticasone/Umeclidin/Vilanter40189
Spiriva RespimatTiotropium Bromide16462
Fluticasone PropionateFluticasone Propionate16080
Breo ElliptaFluticasone/Vilanterol15940
OmeprazoleOmeprazole11439
Montelukast SodiumMontelukast Sodium10735
SymbicortBudesonide/Formoterol Fumarate10137
Stiolto RespimatTiotropium Br/Olodaterol Hcl8529
EliquisApixaban8424
PrednisonePrednisone7853
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr7625
Wixela InhubFluticasone Propion/Salmeterol6620
BreynaBudesonide/Formoterol Fumarate6219
Advair HfaFluticasone Propion/Salmeterol6116
AzithromycinAzithromycin6143
Fluticasone-SalmeterolFluticasone Propion/Salmeterol5421
RoflumilastRoflumilast45suppressed
Ventolin HfaAlbuterol Sulfate4420
Levalbuterol Tartrate HfaLevalbuterol Tartrate4221
Azelastine HclAzelastine Hcl4013
Incruse ElliptaUmeclidinium Bromide38suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate3618
Dupixent PenDupilumab26suppressed
XolairOmalizumab26suppressed
Breztri AerosphereBudesonide/Glycopyr/Formoterol24suppressed
DuleraMometasone/Formoterol2215
XareltoRivaroxaban22suppressed
Pantoprazole SodiumPantoprazole Sodium19suppressed
Spiriva HandihalerTiotropium Bromide18suppressed
Ipratropium BromideIpratropium Bromide16suppressed
Fluticasone-VilanterolFluticasone/Vilanterol14suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav11suppressed

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 $5,198.75 · 16 records GENZYME CORPORATION DUPIXENT, NUCALA, Ohtuvayre, WINREVAIR, XYWAV 2
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