Healthcare provider profile · identity verified

Don T. Bui, M.D.

Allopathic & Osteopathic Physicians|Urology · LAGUNA HILLS, CA · NPI 1932313483

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 Don T. Bui, M.D. received $4,023.90 in general payments during 2025 across 70 reported records.

Procept Biorobotics Corporation accounted for 41.2% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 25 associated products.

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

Astellas Pharma US 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 Myrbetriq as an associated drug or biological on 16 records involving 16 distinct recipient NPIs. Public Medicare Part D data also shows 78 claims for Myrbetriq 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 ORGOVYX as an associated drug or biological on 16373 records involving 6981 distinct recipient NPIs. Public Medicare Part D data also shows 32 claims for Orgovyx by this doctor in 2024.

Sumitomo Pharma America, 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 GEMTESA as an associated drug or biological on 61692 records involving 22152 distinct recipient NPIs. Public Medicare Part D data also shows 147 claims for Gemtesa by this doctor in 2024.

Sumitomo Pharma America, 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 ORGOVYX as an associated drug or biological on 17129 records involving 6223 distinct recipient NPIs. Public Medicare Part D data also shows 32 claims for Orgovyx by this doctor in 2024.

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

Payment overview · 2025

General Payments

$4,023.90

70 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
Procept Biorobotics Corporation Unresolved — no canonical attribution shown $1,658.0741.2%52025
Teleflex LLC Unresolved — no canonical attribution shown $560.2813.9%92025
Medtronic, Inc. Medtronic, Inc.
exact · evidence 2025-07-22
$226.355.6%22025
Sumitomo Pharma America, Inc. Unresolved — no canonical attribution shown $217.805.4%102025
ABBVIE INC. Unresolved — no canonical attribution shown $176.384.4%82025
Calyxo, Inc. Unresolved — no canonical attribution shown $145.143.6%22025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $142.743.5%22025
Merck Sharp & Dohme LLC Unresolved — no canonical attribution shown $136.963.4%52025
ACCORD HEALTHCARE, INC. Unresolved — no canonical attribution shown $104.432.6%52025
Astellas Pharma US Inc Unresolved — no canonical attribution shown $101.282.5%22025
UROGEN PHARMA, INC. Unresolved — no canonical attribution shown $99.092.5%22025
BLUEWIND MEDICAL Unresolved — no canonical attribution shown $73.871.8%32025
IMMUNITYBIO, INC. Unresolved — no canonical attribution shown $72.841.8%32025
Antares Pharma, Inc. Unresolved — no canonical attribution shown $58.701.5%32025
Janssen Biotech, Inc. Unresolved — no canonical attribution shown $45.611.1%22025
C. R. Bard, Inc. & Subsidiaries Unresolved — no canonical attribution shown $42.241.1%12025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $41.891.0%22025
FEMSelect Inc. Unresolved — no canonical attribution shown $37.310.9%12025
Ferring Pharmaceuticals Inc. Unresolved — no canonical attribution shown $29.330.7%12025
TOLMAR, INC. Unresolved — no canonical attribution shown $26.910.7%12025
PFIZER INC. Unresolved — no canonical attribution shown $26.680.7%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$3,069.9965
Travel and Lodging$876.212
Education$77.703

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
AQUABEAM ROBOTIC SYSTEM
Normalized: aquabeam robotic system
Device Procept Biorobotics Corporation $1,658.07 5 2025
Source payment records
BARRIGEL
Normalized: barrigel
Device Teleflex LLC $425.43 8 2025
Source payment records
INTERSTIM
Normalized: interstim
Device Medtronic, Inc. $226.35 2 2025
Source payment records
CVAC ASPIRATION SYSTEM
Normalized: cvac aspiration system
Device Calyxo, Inc. $145.14 2 2025
Source payment records
Nubeqa
Normalized: nubeqa
Drug Bayer Healthcare Pharmaceuticals Inc. $142.74 2 2025
Source payment records
KEYTRUDA
Normalized: keytruda
Biological Merck Sharp & Dohme LLC $136.96 5 2025
Source payment records
UROLIFT
Normalized: urolift
Device Teleflex LLC $134.85 1 2025
Source payment records
LUPRON DEPOT
Normalized: lupron depot
Drug ABBVIE INC. $133.61 6 2025
Source payment records
ORGOVYX
Normalized: orgovyx
Drug PFIZER INC., Sumitomo Pharma America, Inc. $130.56 5 2025
Source payment records
GEMTESA
Normalized: gemtesa
Drug Sumitomo Pharma America, Inc. $113.92 6 2025
Source payment records
Camcevi
Normalized: camcevi
Drug ACCORD HEALTHCARE, INC. $104.43 5 2025
Source payment records
ANKTIVA
Normalized: anktiva
Drug IMMUNITYBIO, INC. $72.84 3 2025
Source payment records
XTANDI
Normalized: xtandi
Drug Astellas Pharma US Inc, PFIZER INC. $59.96 2 2025
Source payment records
XYOSTED
Normalized: xyosted
Drug Antares Pharma, Inc. $58.70 3 2025
Source payment records
REVI
Normalized: revi
Device BLUEWIND MEDICAL $52.84 2 2025
Source payment records
ERLEADA
Normalized: erleada
Drug Janssen Biotech, Inc. $45.61 2 2025
Source payment records
JELMYTO
Normalized: jelmyto
Drug UROGEN PHARMA, INC. $45.30 1 2025
Source payment records
BOTOX
Normalized: botox
Biological ABBVIE INC. $42.77 2 2025
Source payment records
Bard Urinary Drainage Bag
Normalized: bard urinary drainage bag
Device C. R. Bard, Inc. & Subsidiaries $42.24 1 2025
Source payment records
PLUVICTO
Normalized: pluvicto
Drug Novartis Pharmaceuticals Corporation $41.89 2 2025
Source payment records
ENPLACE
Normalized: enplace
Device FEMSelect Inc. $37.31 1 2025
Source payment records
ADSTILADRIN
Normalized: adstiladrin
Biological Ferring Pharmaceuticals Inc. $29.33 1 2025
Source payment records
ELIGARD
Normalized: eligard
Drug TOLMAR, INC. $26.91 1 2025
Source payment records
TALZENNA
Normalized: talzenna
Drug PFIZER INC. $26.68 1 2025
Source payment records
KEYTRUDA QLEX
Normalized: keytruda qlex
Biological Merck Sharp & Dohme LLC $18.75 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
GEMTESA
gemtesa
2025 Gemtesa 2024 147 exact normalized Medicare Part D
ORGOVYX
orgovyx
2025 Orgovyx 2024 32
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
Astellas Pharma US Inc
Exact reporting entity; no affiliate inference
2025 Myrbetriq
open payments reported associated product
CMS Open Payments — General Payments
16 supporting records · 16 recipient NPIs · example record 1238599014
Myrbetriq · 2024
Exact normalized brand match · 1 Part D row
78 22
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ORGOVYX
open payments reported associated product
CMS Open Payments — General Payments
16373 supporting records · 6981 recipient NPIs · example record 1228794230
Orgovyx · 2024
Exact normalized brand match · 1 Part D row
32 suppressed by CMS
Sumitomo Pharma America, Inc.
Exact reporting entity; no affiliate inference
2025 GEMTESA
open payments reported associated product
CMS Open Payments — General Payments
61692 supporting records · 22152 recipient NPIs · example record 1176593503
Gemtesa · 2024
Exact normalized brand match · 1 Part D row
147 52
Sumitomo Pharma America, Inc.
Exact reporting entity; no affiliate inference
2025 ORGOVYX
open payments reported associated product
CMS Open Payments — General Payments
17129 supporting records · 6223 recipient NPIs · example record 1176593507
Orgovyx · 2024
Exact normalized brand match · 1 Part D row
32 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
Tamsulosin HclTamsulosin Hcl1393529
FinasterideFinasteride455172
Trospium ChlorideTrospium Chloride205101
DutasterideDutasteride20472
GemtesaVibegron14752
Alfuzosin Hcl ErAlfuzosin Hcl10642
SilodosinSilodosin8742
Ciprofloxacin HclCiprofloxacin Hcl8581
Sildenafil CitrateSildenafil Citrate8535
MyrbetriqMirabegron7822
Oxybutynin Chloride ErOxybutynin Chloride7130
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst6961
CefdinirCefdinir4439
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim3835
Terazosin HclTerazosin Hcl3612
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen3434
BicalutamideBicalutamide3227
OrgovyxRelugolix32suppressed
EstradiolEstradiol3126
Methenamine HippurateMethenamine Hippurate2815
CephalexinCephalexin2712
Testosterone CypionateTestosterone Cypionate27suppressed
Doxazosin MesylateDoxazosin Mesylate21suppressed
Potassium Citrate ErPotassium Citrate19suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav1716
Solifenacin SuccinateSolifenacin Succinate16suppressed
TestosteroneTestosterone15suppressed
AllopurinolAllopurinol14suppressed
LevofloxacinLevofloxacin1312
Oxybutynin ChlorideOxybutynin Chloride13suppressed
TadalafilTadalafil13suppressed
Tolterodine Tartrate ErTolterodine Tartrate13suppressed
Abiraterone AcetateAbiraterone Acetate12suppressed

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 $4,023.90 · 70 records Procept Biorobotics Corporation ADSTILADRIN, ANKTIVA, AQUABEAM ROBOTIC SYSTEM, BARRIGEL, BOTOX, Bard Urinary Drainage Bag, CVAC ASPIRATION SYSTEM, Camcevi, ELIGARD, ENPLACE, ERLEADA, GEMTESA, INTERSTIM, JELMYTO, KEYTRUDA, KEYTRUDA QLEX, LUPRON DEPOT, Nubeqa, ORGOVYX, PLUVICTO, REVI, TALZENNA, UROLIFT, XTANDI, XYOSTED 4
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