Healthcare provider profile · identity verified

Haiyan Liu, CNS

Physician Assistants & Advanced Practice Nursing Providers|Clinical Nurse Specialist · AUSTIN, TX · NPI 1144481003

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 Haiyan Liu, CNS received $432.82 in general payments during 2025 across 4 reported records.

Amgen Inc. accounted for 32.4% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 4 associated products.

Amgen 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 ENBREL as an associated drug or biological on 9330 records involving 2094 distinct recipient NPIs. Public Medicare Part D data also shows 12 claims for Enbrel by this doctor in 2024.

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

Payment overview · 2025

General Payments

$432.82

4 reported records · 4 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
Amgen Inc. Unresolved — no canonical attribution shown $140.1432.4%12025
Abbott Laboratories Unresolved — no canonical attribution shown $119.4927.6%12025
Teleflex LLC Unresolved — no canonical attribution shown $88.6220.5%12025
Neurocrine BioSciences, Inc. Unresolved — no canonical attribution shown $84.5719.5%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$432.824

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
KRYSTEXXA
Normalized: krystexxa
Biological Amgen Inc. $140.14 1 2025
Source payment records
FREESTYLE LIBRE 3
Normalized: freestyle libre 3
Device Abbott Laboratories $119.49 1 2025
Source payment records
BARRIGEL
Normalized: barrigel
Device Teleflex LLC $88.62 1 2025
Source payment records
INGREZZA
Normalized: ingrezza
Drug Neurocrine BioSciences, Inc. $84.57 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
Amgen Inc.
Exact reporting entity; no affiliate inference
2025 ENBREL
open payments reported associated product
CMS Open Payments — General Payments
9330 supporting records · 2094 recipient NPIs · example record 1226877474
Enbrel · 2024
Exact normalized brand match · 1 Part D row
12 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
EliquisApixaban22219
FurosemideFurosemide16232
Atorvastatin CalciumAtorvastatin Calcium16021
GabapentinGabapentin15324
Potassium ChloridePotassium Chloride10928
Amlodipine BesylateAmlodipine Besylate10116
Levothyroxine SodiumLevothyroxine Sodium10117
Donepezil HclDonepezil Hcl9612
LevetiracetamLevetiracetam9414
Metoprolol TartrateMetoprolol Tartrate8215
Fluticasone PropionateFluticasone Propionate7723
BaclofenBaclofen72suppressed
Memantine HclMemantine Hcl72suppressed
Sertraline HclSertraline Hcl7113
Escitalopram OxalateEscitalopram Oxalate6912
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate6811
Divalproex SodiumDivalproex Sodium6111
MirtazapineMirtazapine5916
MyrbetriqMirabegron56suppressed
Tamsulosin HclTamsulosin Hcl52suppressed
Metformin HclMetformin Hcl51suppressed
Pantoprazole SodiumPantoprazole Sodium45suppressed
KetoconazoleKetoconazole41suppressed
Montelukast SodiumMontelukast Sodium38suppressed
Buspirone HclBuspirone Hcl35suppressed
XareltoRivaroxaban35suppressed
Diclofenac SodiumDiclofenac Sodium3413
Ondansetron HclOndansetron Hcl3421
ClopidogrelClopidogrel Bisulfate33suppressed
FamotidineFamotidine33suppressed
LatanoprostLatanoprost32suppressed
Losartan PotassiumLosartan Potassium31suppressed
PrednisonePrednisone3113
SoaanzTorsemide30suppressed
CarvedilolCarvedilol29suppressed
Duloxetine HclDuloxetine Hcl2911
Fluoxetine HclFluoxetine Hcl28suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2813
Ciprofloxacin HclCiprofloxacin Hcl2716
Venlafaxine Hcl ErVenlafaxine Hcl25suppressed
JanuviaSitagliptin Phosphate24suppressed
Medroxyprogesterone AcetateMedroxyprogesterone Acetate24suppressed
VascepaIcosapent Ethyl24suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate23suppressed
TorsemideTorsemide23suppressed
Citalopram HbrCitalopram Hydrobromide22suppressed
SimvastatinSimvastatin22suppressed
Diltiazem HclDiltiazem Hcl21suppressed
Hydralazine HclHydralazine Hcl21suppressed
SulfasalazineSulfasalazine21suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol20suppressed
PrimidonePrimidone20suppressed
AllopurinolAllopurinol19suppressed
OmeprazoleOmeprazole19suppressed
RisperidoneRisperidone19suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog18suppressed
Memantine Hcl ErMemantine Hcl18suppressed
NystatinNystatin17suppressed
RestasisCyclosporine17suppressed
Dexlansoprazole DrDexlansoprazole16suppressed
LisinoprilLisinopril16suppressed
Midodrine HclMidodrine Hcl16suppressed
Flecainide AcetateFlecainide Acetate15suppressed
LubiprostoneLubiprostone15suppressed
Metoclopramide HclMetoclopramide Hcl15suppressed
Nitro-BidNitroglycerin15suppressed
SucralfateSucralfate15suppressed
AptiomEslicarbazepine Acetate14suppressed
Bupropion HclBupropion Hcl14suppressed
Carbidopa-LevodopaCarbidopa/Levodopa14suppressed
Doxycycline HyclateDoxycycline Hyclate14suppressed
AtenololAtenolol13suppressed
BumetanideBumetanide13suppressed
FinasterideFinasteride13suppressed
LinzessLinaclotide13suppressed
Mesalamine ErMesalamine13suppressed
SpironolactoneSpironolactone13suppressed
Timolol MaleateTimolol Maleate13suppressed
CombiganBrimonidine Tartrate/Timolol12suppressed
DigoxinDigoxin12suppressed
Dilt-XrDiltiazem Hcl12suppressed
EnbrelEtanercept12suppressed
Enoxaparin SodiumEnoxaparin Sodium12suppressed
Ipratropium BromideIpratropium Bromide12suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog12suppressed
MethocarbamolMethocarbamol12suppressed
BicalutamideBicalutamide11suppressed
Cinacalcet HclCinacalcet 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 $432.82 · 4 records Amgen Inc. BARRIGEL, FREESTYLE LIBRE 3, INGREZZA, KRYSTEXXA 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

Full methodology · Questions & answers · Report a possible error