Medicare Enrolled

Dr. Stephen Liu, MD

Medical Oncology · Los Angeles, CA
Practice pattern: Clinical Cardiology — Primarily office-based clinical cardiology
Consulting-driven
1441 EASTLAKE AVE, Los Angeles, CA 90089
3238653105
In practice since 2006 (19 years)
NPI: 1184788432 verify on NPPES ↗
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. Liu 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. Liu? Request a correction or review of any data shown here. Provider portal →

What this data tells you about Dr. Liu

Dr. Stephen Liu is a medical oncology specialist in Los Angeles, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Liu performed 408 Medicare services across 179 unique beneficiaries.

Between the years covered by Open Payments, Dr. Liu received a total of $715,853 from 44 pharmaceutical and/or device companies across 525 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in medical oncology. The majority of payments are for consulting, which typically reflects recognized clinical expertise sought by manufacturers. Patients may wish to discuss these relationships with their provider.

The Data Coverage level for Dr. Liu 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 ▲ 408 Medicare services $715,853 industry payments

Medicare Practice Summary

Medicare Utilization ↗
408
Medicare services
Bottom 42% in CA for medical oncology
179
Unique beneficiaries
$112
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~21 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
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.
 273 $121 $347
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.
 97 $83 $255
New patient office visit, complex (60-74 min) 27 $156 $486
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.
 11 $59 $151
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 ↗
$715,853
Total received (2018-2024)
Avg $102,265/year across 7 years
Top 3% in CA for medical oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
44
Companies
525
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.

Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$526,086 (73.5%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$111,723 (15.6%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$78,044 (10.9%)

Payment trend by year

Annual totals from pharmaceutical and medical device companies.

2024
$101,944
2023
$105,998
2022
$65,049
2021
$79,830
2020
$83,558
2019
$177,268
2018
$102,206

Payments by company (2024)

Consulting
Speaking
Meals & Travel
Research
AstraZeneca Pharmaceuticals LP
$24,438
Daiichi Sankyo Inc.
$12,012
Merck Sharp & Dohme LLC
$9,572
Hoffmann-La Roche Limited
$9,120
AstraZeneca UK Limited
$7,202
Janssen Scientific Affairs, LLC
$6,750
Janssen Biotech, Inc.
$6,075
Lilly USA, LLC
$5,850
Boehringer Ingelheim Pharmaceuticals, Inc.
$4,231
ABBVIE INC.
$4,050
F. Hoffmann-La Roche AG
$3,850
Janssen Global Services, LLC
$2,399
Regeneron Pharmaceuticals, Inc.
$1,654
PFIZER INC.
$1,080
Takeda Pharmaceuticals U.S.A., Inc.
$765
Gilead Sciences, Inc.
$760
ARRAY BIOPHARMA INC
$683
JAZZ PHARMACEUTICALS INC.
$401
Genentech, Inc.
$380
Mirati Therapeutics, Inc.
$192
Novocure Inc.
$176
EMD Serono, Inc.
$126
Amgen Inc.
$106
Genentech USA, Inc.
$72
Top 3 companies account for 45.1% of 2024 payments
All-time payments by company (2018-2024) ›
AstraZeneca Pharmaceuticals LP
$139,012
Merck Sharp & Dohme Corporation
$86,002
F. Hoffmann-La Roche AG
$79,784
Takeda Pharmaceuticals U.S.A., Inc.
$55,152
AstraZeneca UK Limited
$40,530
Genentech USA, Inc.
$27,128
Daiichi Sankyo Inc.
$22,229
ABBVIE INC.
$21,048
Janssen Global Services, LLC
$18,985
Janssen Scientific Affairs, LLC
$18,979
Celgene Corporation
$18,872
Janssen Biotech, Inc.
$13,340
E.R. Squibb & Sons, L.L.C.
$13,025
Regeneron Healthcare Solutions, Inc.
$12,227
Genentech, Inc.
$11,651
JAZZ PHARMACEUTICALS INC.
$11,172
Lilly USA, LLC
$10,915
Eli Lilly and Company
$10,648
Merck Sharp & Dohme LLC
$9,572
Hoffmann-La Roche Limited
$9,120
GENZYME CORPORATION
$8,310
Gilead Sciences, Inc.
$8,287
Medical Device Business Services, Inc.
$8,208
Amgen Inc.
$7,488
Regeneron Pharmaceuticals, Inc.
$7,331
Novartis Pharmaceuticals Corporation
$6,879
Boehringer Ingelheim International GmbH
$6,131
CATALYST PHARMACEUTICALS, INC.
$5,693
PFIZER INC.
$5,069
Boehringer Ingelheim Pharmaceuticals, Inc.
$4,262
ARRAY BIOPHARMA INC
$4,148
Heron Therapeutics, Inc.
$3,813
Bayer HealthCare Pharmaceuticals Inc.
$1,905
Chugai Pharmaceutical Co., Ltd.
$1,900
Eisai Inc.
$1,875
Jazz Pharmaceuticals Inc.
$1,750
Blueprint Medicines Corporation
$1,400
Boehringer Ingelheim Pharma GmbH & Co.KG
$1,042
Novocure Inc.
$311
Coherus Biosciences Inc.
$251
Mirati Therapeutics, Inc.
$192
EMD Serono, Inc.
$126
Roche Products Limited
$70
Pharmacyclics LLC, An AbbVie Company
$20
Top 3 companies account for 42.6% of all-time payments
Associated products mentioned in payments ›
ALIMTA · ALUNBRIG · Abraxane · Alecensa · Avastin · BRAFTOVI · CINVANTI · CYRAMZA · ENHERTU · EXKIVITY · Enhertu · FIRDAPSE · GILOTRIF · ILARIS · IMFINZI · IMJUDO · Imbruvica · KEYTRUDA · KRAZATI · LIBTAYO · LIBTAYO CEMIPLIMAB-RWLC INJECTION · LORBRENA · LUMAKRAS · Lenvima · Non-Covered Product · OPDIVO · Optune Lua (NovoTTF-200T) · RETEVMO · RYBREVANT · TABRECTA · TAGRISSO · TECENTRIQ · Tecentriq · Trodelvy · Udenyca · Vitrakvi · ZEPZELCA
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 →

The majority of payments (74%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers. Total industry engagement is in the top 3% for medical oncology in CA.

Looking for a medical oncology specialist in Los Angeles?
Compare medical oncologists in the Los Angeles area by procedure volume, costs, and industry payment transparency.
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Geographic Context

Medical oncologists within 10 mi
78
Per 100K population
0.8
County median income
$87,760
Nearest hospital
CALIFORNIA HOSPITAL MEDICAL CENTER LA
1.7 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. Liu is a clinical cardiology specialist, with moderate Medicare volume, with consulting-driven industry engagement in the top 3% of CA peers, 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. Liu experienced with office visit, established patient, complex (40-54 min)?
Based on Medicare claims data, Dr. Liu performed 273 office visit, established patient, complex (40-54 min) 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. Liu receive payments from pharmaceutical companies?
Yes. Dr. Liu received a total of $715,853 from 44 companies across 525 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. Liu's costs compare to other medical oncologists in Los Angeles?
Dr. Liu's average Medicare payment per service is $112. 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. Liu) 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.

Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology

Data Disclaimer — Data sourced from the Centers for Medicare & Medicaid Services (CMS): National Plan and Provider Enumeration System (NPPES), Open Payments program, Medicare Provider Utilization and Payment Data, and Provider Enrollment & Certification data (PECOS). Published under the Freedom of Information Act (FOIA). This website is not affiliated with, endorsed by, or authorized by CMS, HHS, or the U.S. Government. Data may contain errors as reported to CMS by providers and reporting entities. Payments from industry are legal and do not indicate wrongdoing. Medicare data reflects only patients aged 65+ or those with qualifying disabilities. For corrections, contact CMS directly. This information does not constitute medical advice and should not be used as the sole basis for choosing a healthcare provider. Procedure descriptions use plain language and do not reference CPT® codes, which are copyrighted by the American Medical Association. Full methodology → · Report a data error → · Privacy policy →