Medicare Enrolled
Dr. Lynne Bui, M.D.
Internal Medicine · Gilroy, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Mixed engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Bui from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Bui
Dr. Lynne Bui is an internal medicine specialist in Gilroy, CA, with 17 years of NPI registration. Based on federal Medicare data, Dr. Bui performed 42,457 Medicare services across 939 unique beneficiaries.
Between the years covered by Open Payments, Dr. Bui received a total of $26,751 from 72 pharmaceutical and/or device companies across 647 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in internal medicine. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Bui is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 17 years in practice
▲ Top 1% volume in CA
$26,751 industry payments
Medicare Practice Summary
Medicare Utilization ↗42,457
Medicare services
Top 1% in CA for internal medicine
939
Unique beneficiaries
$7
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~2,497 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Iron infusion (Injectafer) An intravenous injection of ferric carboxymaltose, an iron replacement medication. |
25,500 | $1 | $2 |
| Epoetin alfa injection (Procrit) for anemia An injection of epoetin alfa containing 1000 units for use in patients not on end-stage renal disease (ESRD) dialysis. |
5,640 | $6 | $20 |
| Injection, heparin sodium, (heparin lock flush), per 10 units | 4,456 | $0 | $0 |
| Denosumab injection (Prolia/Xgeva) | 1,740 | $18 | $30 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
1,344 | $0 | $0 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
958 | $90 | $200 |
| Anti-nausea injection (ondansetron/Zofran) | 788 | $0 | $0 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
442 | $14 | $40 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
307 | $83 | $150 |
| Vitamin B-12 injection An injection of vitamin B-12 (cyanocobalamin) with a dose of up to 1000 mcg. |
195 | $1 | $4 |
| Normal saline infusion, 250 cc Administration of 250 cubic centimeters of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater fluid. |
176 | $1 | $5 |
| Intravenous hydration infusion, 31-60 minutes Administration of fluids into a vein to maintain hydration. This procedure involves an infusion lasting between 31 and 60 minutes. |
107 | $35 | $90 |
| Arterial puncture or catheterization, arm or leg Insertion of a needle or tube into an artery in the arm or leg. This procedure is used to access the arterial system for diagnostic or therapeutic purposes. |
106 | $547 | $800 |
| Intravenous infusion, 1 hour or less Administration of medication or fluid directly into a vein for therapeutic, preventive, or diagnostic purposes. The procedure lasts one hour or less. |
90 | $69 | $150 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
85 | $1 | $8 |
| Concurrent intravenous infusion Administration of medication or fluid into a vein for therapy, prevention, or diagnosis while another infusion is being given. |
76 | $20 | $41 |
| Additional hour of intravenous hydration This code represents each additional hour of intravenous fluid administration beyond the initial hour. It is used to bill for extended hydration therapy. |
66 | $13 | $25 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
63 | $140 | $300 |
| Normal saline infusion, 500 ml Administration of sterile normal saline solution through an intravenous line. This procedure involves the infusion of a 500 ml unit of the solution. |
62 | $1 | $5 |
| Venipuncture for blood collection A procedure to draw blood from a vein for medical testing or analysis. |
55 | $105 | $202 |
| New patient office visit, complex (60-74 min) | 52 | $200 | $350 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
51 | $5 | $5 |
| Intravenous drug injection A procedure involving the administration of a medication or substance directly into a vein. |
48 | $40 | $75 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
32 | $131 | $300 |
| Additional sequential IV infusion, 1 hour or less This code represents an additional intravenous infusion administered sequentially to a primary infusion. It covers the administration time of one hour or less. |
18 | $30 | $60 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
61.7% high complexity
34.7% medium
3.6% routine
Industry Payment Transparency
Open Payments through 2024 ↗$26,751
Total received (2018-2024)
Avg $3,822/year across 7 years
Top 5% in CA for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
72
Companies
647
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$12,692 (47.4%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$12,561 (47.0%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$1,498 (5.6%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$1,119
2023
$2,234
2022
$2,167
2021
$2,325
2020
$2,900
2019
$4,652
2018
$11,354
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Janssen Biotech, Inc.
$247
Daiichi Sankyo Inc.
$117
PFIZER INC.
$108
Novartis Pharmaceuticals Corporation
$77
AstraZeneca Pharmaceuticals LP
$69
Exelixis Inc.
$66
Takeda Pharmaceuticals U.S.A., Inc.
$56
PROGENICS PHARMACEUTICALS, INC.
$53
Astellas Pharma US Inc
$50
Eisai Inc.
$48
Rigel Pharmaceuticals, Inc.
$35
Merck Sharp & Dohme LLC
$30
Lilly USA, LLC
$27
ABBVIE INC.
$24
Coherus Biosciences Inc.
$23
TAIHO ONCOLOGY, INC.
$21
Incyte Corporation
$19
Celgene Corporation
$18
BeiGene USA, Inc.
$17
SERVIER PHARMACEUTICALS LLC
$16
Top 3 companies account for 42.2% of 2024 payments
All-time payments by company (2018-2024) ›
AstraZeneca Pharmaceuticals LP
$9,074
Kite Pharma, Inc.
$2,672
Janssen Biotech, Inc.
$2,614
PFIZER INC.
$1,416
Seagen Inc.
$1,016
Amgen Inc.
$968
Novartis Pharmaceuticals Corporation
$904
GlaxoSmithKline, LLC.
$774
Takeda Pharmaceuticals U.S.A., Inc.
$603
Lilly USA, LLC
$525
Exelixis Inc.
$436
E.R. Squibb & Sons, L.L.C.
$407
Merck Sharp & Dohme Corporation
$394
Daiichi Sankyo Inc.
$346
Celgene Corporation
$337
Genentech USA, Inc.
$308
Bayer HealthCare Pharmaceuticals Inc.
$266
Astellas Pharma US Inc
$199
Rigel Pharmaceuticals, Inc.
$195
Sun Pharmaceutical Industries Inc.
$195
Progenics Pharmaceuticals, Inc.
$185
GENZYME CORPORATION
$184
SANOFI-AVENTIS U.S. LLC
$181
Incyte Corporation
$177
Eisai Inc.
$155
AVEO Pharmaceuticals, Inc.
$129
Allergan, Inc.
$125
Horizon Therapeutics plc
$117
MEDIVATION FIELD SOLUTIONS LLC
$112
EMD Serono, Inc.
$105
TESARO, Inc.
$91
Janssen Products, LP
$90
Agios Pharmaceuticals, Inc.
$85
PharmaEssentia USA Corporation
$78
Sirtex Medical Inc
$78
Acrotech Biopharma LLC
$64
Karyopharm Therapeutics Inc.
$60
Boehringer Ingelheim Pharmaceuticals, Inc.
$57
PROGENICS PHARMACEUTICALS, INC.
$53
Pharmacyclics LLC, An AbbVie Company
$51
Seattle Genetics, Inc.
$49
Octapharma USA, Inc.
$49
AbbVie, Inc.
$49
Coherus Biosciences Inc.
$47
Merck Sharp & Dohme LLC
$46
INSYS Therapeutics Inc
$45
ADC Therapeutics America, Inc.
$44
Mylan Institutional Inc.
$43
Gilead Sciences, Inc.
$41
Alexion Pharmaceuticals, Inc.
$37
Dova Pharmaceuticals
$36
AMAG Pharmaceuticals, Inc.
$35
Amneal Pharmaceuticals LLC
$30
Sumitomo Pharma America, Inc.
$27
Bayer Healthcare Pharmaceuticals Inc.
$25
ABBVIE INC.
$24
ARRAY BIOPHARMA INC
$24
EISAI INC.
$23
Blueprint Medicines Corporation
$23
Shire North American Group Inc
$22
TAIHO ONCOLOGY, INC.
$21
Regeneron Healthcare Solutions, Inc.
$21
ACCORD HEALTHCARE, INC.
$19
AbbVie Inc.
$18
BeiGene USA, Inc.
$17
Stemline Therapeutics Inc.
$17
Servier Pharmaceuticals LLC
$17
CTI BioPharma Corp.
$16
Pharmacosmos Therapeutics Inc.
$16
SERVIER PHARMACEUTICALS LLC
$16
Janssen Scientific Affairs, LLC
$15
Teva Pharmaceuticals USA, Inc.
$15
Top 3 companies account for 53.7% of all-time payments
Associated products mentioned in payments ›
ABECMA · ADCETRIS · ADVATE · AKEEGA · ALIMTA · ALUNBRIG · AVASTIN · Aliqopa · Avastin · BALVERSA · BELEODAQ · BENDEKA · BESREMI · BLENREP · BOSULIF · BRAFTOVI · Bavencio · CABOMETYX · CALQUENCE · CAMCEVI · COSELA · CYRAMZA · Cabometyx · Cequa · DARZALEX · Doptelet · ELITEK · ELREXFIO · ELZONRIS · EMPLICITI · ENHERTU · ERBITUX · ERLEADA · EVENITY · Enhertu · Erleada · FERAHEME · FOTIVDA · GAVRETO · GILOTRIF · IBRANCE · ICLUSIG · IDHIFA · IMBRUVICA · IMFINZI · INJECTAFER · INLYTA · INREBIC · Imbruvica · JADENU · JAKAFI · JEVTANA · KEYTRUDA · KISQALI · Kyprolis · LIBTAYO · LONSURF · LUMAKRAS · LUTATHERA · LYNPARZA · Lenvima · MEKINIST · MONJUVI · MONOFERRIC · MYLOTARG · NINLARO · Neulasta · Nplate · Nubeqa · ONUREG · OPDIVO · ORGOVYX · Ogivri · PADCEV · PLUVICTO · PROMACTA · PYLARIFY · Padcev · Perjeta · Pomalyst · REBLOZYL · RETEVMO · RYBREVANT · RYDAPT · Revlimid · Rezlidhia · SARCLISA · SCEMBLIX · SIR-Spheres Microspheres · SOLIRIS · SPRYCEL · SUTENT · SYNDROS · Stivarga · TABRECTA · TAGRISSO · TASIGNA · TECENTRIQ · TEPEZZA · TEVIMBRA · TIBSOVO · TUKYSA · Tavalisse · Udenyca · Ultomiris · VENCLEXTA · VERZENIO · VOTRIENT · Venclexta · Vonjo · WILATE - VON WILLEBRAND FACTOR/COAGULATION FACTOR VIII COMPLEX (HUMAN) · XALATAN · XALKORI · XOSPATA · XPOVIO · XTANDI · Xofigo · Xtandi · Yescarta · ZALTRAP · ZEJULA · ZYTIGA
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (47%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians. Total industry engagement is in the top 5% for internal medicine in CA.
Geographic Context
Internal medicine physicians within 10 mi
273
Per 100K population
14.3
County median income
$159,674
Nearest hospital
WATSONVILLE COMMUNITY HOSPITAL
11.9 mi
11.9 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Bui is a mixed practice specialist, with above-average Medicare volume (top 1% in CA), with mixed engagement industry engagement in the top 5% of CA peers, with 17 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Bui experienced with iron infusion (injectafer)?
Based on Medicare claims data, Dr. Bui performed 25,500 iron infusion (injectafer) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Bui receive payments from pharmaceutical companies?
Yes. Dr. Bui received a total of $26,751 from 72 companies across 647 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Bui's costs compare to other internal medicine physicians in Gilroy?
Dr. Bui's average Medicare payment per service is $7. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Bui) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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