Medicare Enrolled
Dr. William Chua, M.D.
Hematology & Oncology · Montebello, CA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Low-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. Chua 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 →
Are you Dr. Chua?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Chua
Dr. William Chua is a hematology & oncology specialist in Montebello, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Chua performed 9,337 Medicare services across 4,143 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chua received a total of $17,526 from 58 pharmaceutical and/or device companies across 332 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in hematology & oncology. 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. Chua 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.
✓ 19 years in practice
▲ Top 29% volume in CA
$17,526 industry payments
Medicare Practice Summary
Medicare Utilization ↗9,337
Medicare services
Top 29% in CA for hematology & oncology
4,143
Unique beneficiaries
$84
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~491 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 |
|---|---|---|---|
| Home health agency supervision, complex multidisciplinary care Supervision by a physician or allowed practitioner for a patient receiving Medicare-covered services from a participating home health agency. This involves complex and multidisciplinary care modalities, with the patient not present during the supervision. |
3,125 | $88 | $152 |
| Home visit, established patient, high complexity A home visit for an established patient involving high-level medical decision making, lasting at least 60 minutes. |
1,507 | $151 | $260 |
| Blood pressure self-monitoring education Training on how to measure your own blood pressure at home. This service teaches the proper technique for using a home blood pressure monitor. |
1,219 | $12 | $19 |
| Home health plan of care re-certification A physician reviews the patient's status and contacts the home health agency to re-certify the plan of care without the patient being present. |
646 | $36 | $62 |
| Home health plan of care certification Certification by a physician or allowed practitioner for Medicare-covered home health services under a home health plan of care. This includes contacting the home health agency and reviewing reports of patient status required by physicians. |
611 | $46 | $78 |
| Advance care planning consultation, first 30 min A session focused on discussing and documenting future healthcare preferences and goals. This service covers the initial 30 minutes of the planning discussion. |
454 | $75 | $123 |
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
380 | $95 | $200 |
| Home visit, new patient, high complexity A home visit for a new patient involving high-level medical decision making, lasting at least 75 minutes. |
357 | $155 | $306 |
| Nursing facility visit, low complexity A daily follow-up visit for an existing patient in a nursing facility involving straightforward medical decision making. The visit requires at least 15 minutes of time if time is used to determine the level of care. |
250 | $54 | $150 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
223 | $140 | $194 |
| Diabetes self-management training, individual Individualized education and training for managing diabetes, billed per 30-minute session. |
187 | $47 | $83 |
| Annual wellness visit, initial visit A yearly appointment to review your health and create a personalized prevention plan. This initial visit focuses on preventive care and health assessment. |
104 | $177 | $247 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
99 | $63 | $150 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
73 | $138 | $250 |
| 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. |
68 | $52 | $87 |
| Initial nursing facility care, high complexity An initial visit by a healthcare provider to a patient in a nursing facility involving a high level of medical decision making, lasting at least 45 minutes. |
19 | $137 | $245 |
| Nursing facility visit, moderate complexity A follow-up visit by a healthcare provider at a nursing facility for an established patient. The visit involves moderate medical decision making and takes at least 30 minutes. |
15 | $83 | $200 |
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.
Industry Payment Transparency
Open Payments through 2024 ↗$17,526
Total received (2018-2024)
Avg $2,504/year across 7 years
Top 23% in CA for hematology & oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
58
Companies
332
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
$17,456 (99.6%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$70 (0.4%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$694
2023
$2,078
2022
$2,932
2021
$1,633
2020
$727
2019
$3,784
2018
$5,676
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Bayer Healthcare Pharmaceuticals Inc.
$215
Incyte Corporation
$152
Gilead Sciences, Inc.
$125
ABBVIE INC.
$125
Amgen Inc.
$29
PFIZER INC.
$28
ALK-Abello, Inc
$21
Top 3 companies account for 70.8% of 2024 payments
All-time payments by company (2018-2024) ›
Amarin Pharma Inc.
$2,165
Gilead Sciences, Inc.
$1,328
Incyte Corporation
$1,288
AstraZeneca Pharmaceuticals LP
$1,181
Amgen Inc.
$1,019
Esperion Therapeutics, Inc.
$611
Synergy Pharmaceuticals Inc
$599
Boehringer Ingelheim Pharmaceuticals, Inc.
$540
Lilly USA, LLC
$537
Bayer Healthcare Pharmaceuticals Inc.
$524
Janssen Pharmaceuticals, Inc
$516
Bayer HealthCare Pharmaceuticals Inc.
$441
Allergan Inc.
$387
PORTOLA PHARMACEUTICALS, INC.
$374
Teva Pharmaceuticals USA, Inc.
$374
ABBVIE INC.
$372
AbbVie, Inc.
$357
GlaxoSmithKline, LLC.
$352
PFIZER INC.
$344
Novartis Pharmaceuticals Corporation
$303
Radius Health, Inc.
$281
Abbott Laboratories
$245
Ironwood Pharmaceuticals, Inc
$244
AbbVie Inc.
$225
Novo Nordisk Inc
$219
Merck Sharp & Dohme Corporation
$194
Ardelyx, Inc.
$150
Regeneron Healthcare Solutions, Inc.
$133
Corium, LLC
$125
Mirati Therapeutics, Inc.
$125
Sunovion Pharmaceuticals Inc.
$124
EISAI INC.
$119
Allergan, Inc.
$116
Otsuka America Pharmaceutical, Inc.
$116
Cook Medical LLC
$114
Astellas Pharma US Inc
$113
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$112
SANOFI-AVENTIS U.S. LLC
$108
E.R. Squibb & Sons, L.L.C.
$106
Genentech USA, Inc.
$106
Kowa Pharmaceuticals America, Inc.
$103
Clovis Oncology, Inc.
$93
Seattle Genetics, Inc.
$86
Exelixis Inc.
$75
TESARO, Inc.
$72
Takeda Pharmaceuticals U.S.A., Inc.
$70
ALK-Abello, Inc
$69
Cranial Technologies, Inc
$48
Merck Sharp & Dohme LLC
$43
Daiichi Sankyo Inc.
$26
Dendreon Pharmaceuticals LLC
$23
Global Blood Therapeutics, Inc.
$22
GENZYME CORPORATION
$22
Taiho Oncology, Inc.
$22
SANOFI PASTEUR INC.
$19
Dova Pharmaceuticals
$19
Seqirus USA Inc
$15
Nestle HealthCare Nutrition Inc.
$13
Top 3 companies account for 27.3% of all-time payments
Associated products mentioned in payments ›
ADCETRIS · AFINITOR · ANDEXXA · AUSTEDO · Adlarity · Aimovig · Austedo XR · BELSOMRA · BENDEKA · BEVYXXA · BEXSERO · BRILINTA · Cabometyx · DIFICID · Doc Band · Doptelet · ELIQUIS · ELITEK · ENHERTU · ENTRESTO · EUCRISA · Epclusa · FARXIGA · FASENRA · FLUCELVAX QUADRIVALENT · FORTIFY ASSURA · GARDASIL · GILOTRIF · IBSRELA · INLYTA · JAKAFI · JARDIANCE · JYNARQUE · KRAZATI · Kerendia · LINZESS · LONHALA MAGNAIR · LONSURF · Lenvima · Linzess · Livalo · Lunderquist · MENQUADFI · MONJUVI · MOUNJARO · MYRBETRIQ · NEXLIZET · Nanostim Leadleas Pacemaker · Nplate · OXBRYTA · Odactra · Otezla · Ozempic · PEDIARIX · PEMAZYRE · PRALUENT · PRALUENT ALIROCUMAB INJECTION · PREVNAR - 13 · PREVNAR 13 · PROMACTA · PROVENGE · Prolia · QULIPTA · Quadra Assura CRT Defibrillator · RELISTOR · ROTATEQ · RYBELSUS · Repatha · Rubraca · Stivarga · TAGRISSO · TECENTRIQ · TRELEGY ELLIPTA · TRULICITY · TRUMENBA · Trulance · Tymlos · UBRELVY · VIBERZI · Vascepa · Vemlidy · XARELTO · XIFAXAN · XTANDI · ZEJULA · ZENPEP
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 (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Hematology & oncology specialists within 10 mi
461
Per 100K population
4.7
County median income
$87,760
Nearest hospital
ADVENTIST HEALTH WHITE MEMORIAL MONTEBELLO
0.0 mi
0.0 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. Chua is a mixed practice specialist, with above-average Medicare volume (top 29% in CA), with low-engagement industry engagement, with 19 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. Chua experienced with home health agency supervision, complex multidisciplinary care?
Based on Medicare claims data, Dr. Chua performed 3,125 home health agency supervision, complex multidisciplinary care 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. Chua receive payments from pharmaceutical companies?
Yes. Dr. Chua received a total of $17,526 from 58 companies across 332 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. Chua's costs compare to other hematology & oncology specialists in Montebello?
Dr. Chua's average Medicare payment per service is $84. 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. Chua) 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 →
Explore related providers
Same specialty & city
Hematology & Oncology Specialists in Montebello
Browse hematology & oncology specialists in Montebello ranked by procedure volume and transparency data.
Highest volume
Top Hematology & Oncology Specialists in CA
Hematology & oncology specialists ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Hematology & Oncology Specialists in CA
Which CA hematology & oncology specialists receive the most from drug and device companies.
By company
Amarin Pharma Inc. Payments to Doctors
See all physicians who received payments from Amarin Pharma Inc.
By company
Gilead Sciences, Inc. Payments to Doctors
See all physicians who received payments from Gilead Sciences, Inc.
By company
Incyte Corporation Payments to Doctors
See all physicians who received payments from Incyte Corporation.
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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology