Medicare Enrolled
Dr. James Liu, M.D.
Internal Medicine · San Gabriel, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
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. 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?
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What this data tells you about Dr. Liu
Dr. James Liu is an internal medicine specialist in San Gabriel, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Liu performed 5,002 Medicare services across 1,989 unique beneficiaries.
Between the years covered by Open Payments, Dr. Liu received a total of $10,848 from 33 pharmaceutical and/or device companies across 427 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. 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
▲ Top 6% volume in CA
$10,848 industry payments
Medicare Practice Summary
Medicare Utilization ↗5,002
Medicare services
Top 6% in CA for internal medicine
1,989
Unique beneficiaries
$86
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~263 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 (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. |
978 | $103 | $200 |
| 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. |
953 | $66 | $100 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
578 | $12 | $50 |
| 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. |
480 | $100 | $150 |
| 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. |
403 | $75 | $150 |
| Home visit, established patient, low complexity A physician visits an existing patient at their residence to provide care involving a low level of medical decision making. The visit lasts at least 30 minutes. |
227 | $58 | $165 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
213 | $174 | $450 |
| Ultrasound of head and neck blood flow, bilateral An ultrasound exam that uses sound waves to visualize and assess blood flow in the vessels of both the head and the neck. |
209 | $171 | $300 |
| 2-day continuous ECG with review and report A two-day continuous electrocardiogram recording that includes a professional review and written report of the results. |
187 | $60 | $250 |
| 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. |
125 | $142 | $250 |
| Ultrasound of leg arteries or grafts An imaging test that uses sound waves to create pictures of the blood vessels in the legs or any surgical grafts present. |
112 | $220 | $400 |
| Pacemaker programming, dual lead system Adjustment and configuration of a dual-lead pacemaker device to ensure proper operation and settings. |
74 | $66 | $120 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while monitoring the electrocardiogram under physician supervision and review. |
71 | $62 | $200 |
| EKG interpretation and report A standard electrocardiogram test that records the heart's electrical activity using at least 12 leads. The service includes a professional interpretation of the results and a written report. |
65 | $7 | $20 |
| New patient office visit, complex (60-74 min) | 56 | $182 | $300 |
| Home visit, established patient, moderate complexity A home visit for an established patient involving moderate medical decision making. The visit requires at least 40 minutes of time if time is used to determine the level of service. |
51 | $108 | $200 |
| Home visit, established patient, straightforward decision making A home visit for an established patient involving straightforward medical decision making. The visit lasts at least 15 minutes when time is used to determine the level of service. |
46 | $37 | $102 |
| Influenza vaccine, quadrivalent, 0.5 ml dosage | 34 | $20 | $40 |
| 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. |
34 | $91 | $230 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
34 | $33 | $40 |
| 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. |
17 | $142 | $250 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in the arm or leg. The test uses sound waves to check blood flow and may include compression and other maneuvers. |
15 | $172 | $293 |
| Initial hospital admission, moderate complexity Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter. |
14 | $109 | $200 |
| Nursing facility visit, high complexity A follow-up visit by a healthcare provider at a nursing facility for an established patient. The visit involves a high level of medical decision making and takes at least 45 minutes. |
14 | $130 | $200 |
| Home visit, new patient, moderate complexity A home visit for a new patient involving moderate medical decision making, lasting at least 60 minutes. |
12 | $117 | $250 |
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.
5.7% high complexity
8.1% medium
86.1% routine
Industry Payment Transparency
Open Payments through 2024 ↗$10,848
Total received (2018-2024)
Avg $1,550/year across 7 years
Top 9% in CA for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
33
Companies
427
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
$10,601 (97.7%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$247 (2.3%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$191
2023
$308
2022
$1,035
2021
$1,675
2020
$839
2019
$2,845
2018
$3,955
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Amgen Inc.
$108
AstraZeneca Pharmaceuticals LP
$65
Greer Laboratories, Inc.
$19
Top 3 companies account for 100.0% of 2024 payments
All-time payments by company (2018-2024) ›
Amarin Pharma Inc.
$2,164
AstraZeneca Pharmaceuticals LP
$1,303
Novo Nordisk Inc
$979
Amgen Inc.
$838
Janssen Pharmaceuticals, Inc
$688
Novartis Pharmaceuticals Corporation
$605
Synergy Pharmaceuticals Inc
$510
Kowa Pharmaceuticals America, Inc.
$503
Boehringer Ingelheim Pharmaceuticals, Inc.
$441
Bayer HealthCare Pharmaceuticals Inc.
$407
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$296
E.R. Squibb & Sons, L.L.C.
$291
Regeneron Healthcare Solutions, Inc.
$251
SANOFI-AVENTIS U.S. LLC
$241
BIOTRONIK INC.
$233
Merck Sharp & Dohme Corporation
$175
Gilead Sciences, Inc.
$144
PFIZER INC.
$135
Radius Health, Inc.
$114
Celgene Corporation
$105
Allergan Inc.
$105
Lilly USA, LLC
$63
Bayer Healthcare Pharmaceuticals Inc.
$43
Merck Sharp & Dohme LLC
$34
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$30
ABBVIE INC.
$28
Sun Pharmaceutical Industries Inc.
$21
Greer Laboratories, Inc.
$19
AbbVie Inc.
$18
Medtronic, Inc.
$18
Takeda Pharmaceuticals U.S.A., Inc.
$16
Bardy Diagnostics, Inc.
$16
Edwards Lifesciences Corporation
$13
Top 3 companies account for 41.0% of all-time payments
Associated products mentioned in payments ›
AVYCAZ · Acticor · Amitiza · BASAGLAR · BRILINTA · BioMonitor · CHANTIX · Carnation Ambulatory Monitor · Corlanor · EDWARDS SAPIEN 3 TRANSCATHETER HEART VALVE (THV) · ELIQUIS · ENTRESTO · FARXIGA · INVOKANA · JANUVIA · JARDIANCE · Kerendia · LEQVIO · LINZESS · LifeVest · Livalo · MOUNJARO · MULTAQ · Otezla · Ozempic · PRALUENT · PRALUENT ALIROCUMAB INJECTION · Palforzia · RIOMET ER · RYBELSUS · Repatha · Rivacor · SOLIQUA · STEGLATRO · SYMBICORT · TRULANCE · Tresiba · Trulance · Tymlos · VERQUVO · Vascepa · Vemlidy · VenaSeal · Victoza · XARELTO · XIFAXAN · Xultophy 100/3.6
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 (98%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians. Total industry engagement is in the top 9% for internal medicine in CA.
Geographic Context
Internal medicine physicians within 10 mi
5,489
Per 100K population
55.7
County median income
$87,760
Nearest hospital
SAN GABRIEL VALLEY MEDICAL CENTER
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. Liu is a clinical cardiology specialist, with above-average Medicare volume (top 6% in CA), with low-engagement industry engagement in the top 9% 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 (30-39 min)?
Based on Medicare claims data, Dr. Liu performed 978 office visit, established patient (30-39 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 $10,848 from 33 companies across 427 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 internal medicine physicians in San Gabriel?
Dr. Liu's average Medicare payment per service is $86. 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.
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