Medicare Enrolled
Dr. Xiushi Liu, M.D.
Cardiovascular Disease · Arcadia, CA
Practice pattern: Electrophysiology & Remote
— Practice combining electrophysiology and remote services
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 →
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What this data tells you about Dr. Liu
Dr. Xiushi Liu is a cardiovascular disease specialist in Arcadia, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Liu performed 5,299 Medicare services across 3,470 unique beneficiaries.
Between the years covered by Open Payments, Dr. Liu received a total of $20,070 from 33 pharmaceutical and/or device companies across 496 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in cardiovascular disease. 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 18% volume in CA
$20,070 industry payments
Medicare Practice Summary
Medicare Utilization ↗5,299
Medicare services
Top 18% in CA for cardiovascular disease
3,470
Unique beneficiaries
$130
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~279 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. |
682 | $101 | $216 |
| Regadenoson injection (Lexiscan) for heart stress test An injection of regadenoson, a medication used to stress the heart during diagnostic testing. |
524 | $43 | $125 |
| 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. |
490 | $12 | $25 |
| 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. |
404 | $7 | $14 |
| Remote pacemaker monitoring, 90 days Remote assessment of a pacemaker system, including single, dual, multiple lead, or leadless devices, performed up to 90 days apart. |
267 | $23 | $50 |
| Rubidium rb-82, diagnostic, per study dose, up to 60 millicuries | 255 | $408 | $800 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
242 | $168 | $356 |
| Remote pacemaker/defibrillator monitoring, 90 days Remote evaluation of a pacemaker or implantable defibrillator system within 90 days of the last check. |
236 | $21 | $46 |
| 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. |
187 | $144 | $300 |
| New patient office visit, complex (60-74 min) | 147 | $170 | $366 |
| Remote monitoring of implantable heart device, up to 30 days Remote evaluation of an implanted heart or blood vessel monitoring system over a period of up to 30 days. |
142 | $20 | $44 |
| 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. |
127 | $63 | $300 |
| 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. |
125 | $99 | $166 |
| Remote evaluation of implantable defibrillator system Remote assessment of a single, dual, or multiple lead implantable defibrillator system within 90 days of the previous evaluation. |
122 | $29 | $62 |
| Remote cardiac rhythm monitor evaluation, up to 30 days Review and analysis of data from a remote cardiac rhythm monitoring system over a period of up to 30 days. |
121 | $21 | $44 |
| 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. |
115 | $55 | $139 |
| Pacemaker programming, dual lead system Adjustment and configuration of a dual-lead pacemaker device to ensure proper operation and settings. |
101 | $66 | $135 |
| Continuous external EKG monitoring, 8-15 days This procedure involves recording heart rhythm continuously using an external EKG device over a period of 8 to 15 days. |
82 | $9 | $27 |
| External EKG monitoring, 8-15 days Continuous external electrocardiogram recording and review over a period of 8 to 15 days to monitor heart rhythm. |
82 | $20 | $44 |
| Nuclear stress test with CT scan A nuclear medicine imaging test that evaluates blood flow in the heart muscle at rest and during stress, performed alongside a concurrent CT scan. |
81 | $1,703 | $3,983 |
| PET scan of heart muscle blood flow A nuclear medicine imaging test that uses positron emission tomography (PET) to evaluate blood flow within the heart muscle. |
81 | $122 | $448 |
| Remote monitoring of implantable heart rhythm device Evaluation of data transmitted remotely from an implantable cardiovascular monitor, such as a loop recorder or subcutaneous cardiac rhythm monitor, over a period up to 30 days. |
73 | $42 | $53 |
| 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. |
67 | $168 | $347 |
| 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. |
58 | $140 | $322 |
| Sedation by physician, initial 15 minutes Administration of a drug to induce depression of consciousness by the physician performing a procedure. This code covers the initial 15 minutes of sedation for patients aged 5 years or older. |
54 | $10 | $91 |
| Nuclear stress test of heart muscle A nuclear medicine imaging test that evaluates blood flow to the heart muscle while at rest and during stress. |
46 | $1,308 | $3,400 |
| Evaluation of implantable heart and blood vessel monitoring system This procedure involves checking the function and data of an implanted device used to monitor heart and blood vessel activity. |
40 | $35 | $91 |
| Chemical destruction of first incompetent vein with imaging guidance This procedure uses imaging guidance to chemically destroy the first incompetent vein in the arm or leg. |
33 | $1,565 | $3,383 |
| 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. |
33 | $175 | $353 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in one arm or leg using compression and other maneuvers to assess blood flow and check for blockages. |
31 | $100 | $218 |
| Heart rhythm stimulator programming after drug infusion Adjustment of a heart rhythm stimulation device following a drug infusion. This procedure involves reprogramming the device settings to ensure proper function after the medication has been administered. |
30 | $71 | $259 |
| Transesophageal echocardiogram An ultrasound of the heart performed using a probe inserted into the esophagus to obtain detailed images of heart structures and function. |
28 | $89 | $366 |
| Echocardiogram, transthoracic An ultrasound test that uses sound waves to create images of the heart's blood flow, valves, and chambers. |
28 | $15 | $78 |
| Echocardiogram with color Doppler An ultrasound of the heart that uses color imaging to visualize blood flow, measure flow rate, and assess valve function. |
28 | $3 | $35 |
| Pacemaker insertion with heart chamber electrodes A surgical procedure to implant a pacemaker device and place electrodes into the upper and lower chambers of the heart to regulate heart rhythm. |
23 | $383 | $844 |
| Atrial fibrillation ablation with pulmonary vein isolation A procedure to treat atrial fibrillation by mapping the heart's electrical activity and destroying tissue causing irregular contractions. This is done by isolating the pulmonary veins using catheter-based destruction. |
23 | $766 | $1,791 |
| Heart chamber tissue destruction via catheter A procedure that destroys tissue in the upper heart chamber using a tube to treat abnormal heart rhythm. |
23 | $250 | $679 |
| Catheter ablation for abnormal heart rhythm A procedure where catheters are inserted to destroy tissue causing irregular heartbeats. |
22 | $250 | $679 |
| Programming of dual lead implantable defibrillator system Adjustment and testing of the settings for an implanted heart device with two leads to ensure proper function. |
17 | $72 | $166 |
| Pacemaker programming, single lead Adjustment and testing of a single-lead pacemaker to ensure it functions correctly. |
15 | $57 | $114 |
| 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. |
14 | $75 | $153 |
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.
21.7% high complexity
18.8% medium
59.5% routine
Industry Payment Transparency
Open Payments through 2024 ↗$20,070
Total received (2018-2024)
Avg $2,867/year across 7 years
Top 17% in CA for cardiovascular disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
33
Companies
496
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
$12,611 (62.8%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$7,430 (37.0%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$29 (0.1%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$3,859
2023
$1,860
2022
$3,972
2021
$1,476
2020
$1,129
2019
$3,926
2018
$3,848
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Biosense Webster, Inc.
$1,446
Medtronic, Inc.
$838
Boston Scientific Corporation
$664
Merck Sharp & Dohme LLC
$141
Actelion Pharmaceuticals US, Inc.
$134
Janssen Pharmaceuticals, Inc
$130
PFIZER INC.
$105
Novartis Pharmaceuticals Corporation
$77
Lexicon Pharmaceuticals, Inc.
$76
E.R. Squibb & Sons, L.L.C.
$48
Kiniksa Pharmaceuticals International, plc
$45
AstraZeneca Pharmaceuticals LP
$36
Boehringer Ingelheim Pharmaceuticals, Inc.
$35
Edwards Lifesciences Corporation
$29
iRhythm Technologies, Inc.
$28
BIOTRONIK INC.
$16
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$12
Top 3 companies account for 76.4% of 2024 payments
All-time payments by company (2018-2024) ›
Abbott Laboratories
$7,713
Boston Scientific Corporation
$2,986
Medtronic, Inc.
$2,601
Biosense Webster, Inc.
$1,709
Medtronic Vascular, Inc.
$810
Janssen Pharmaceuticals, Inc
$470
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$440
Novartis Pharmaceuticals Corporation
$413
E.R. Squibb & Sons, L.L.C.
$395
Boehringer Ingelheim Pharmaceuticals, Inc.
$297
Bayer HealthCare Pharmaceuticals Inc.
$231
Amgen Inc.
$230
PFIZER INC.
$211
BOSTON SCIENTIFIC CORPORATION
$204
SANOFI-AVENTIS U.S. LLC
$191
Merck Sharp & Dohme LLC
$179
AstraZeneca Pharmaceuticals LP
$169
Actelion Pharmaceuticals US, Inc.
$134
Lexicon Pharmaceuticals, Inc.
$123
Impulse Dynamics (USA) Inc.
$111
Baxter Healthcare
$69
Alnylam Pharmaceuticals Inc.
$53
ATRICURE, INC.
$52
BIOTRONIK INC.
$45
Kiniksa Pharmaceuticals International, plc
$45
Philips Electronics North America Corporation
$29
Edwards Lifesciences Corporation
$29
AtriCure, Inc.
$28
iRhythm Technologies, Inc.
$28
SCPHARMACEUTICALS INC.
$21
CooperSurgical, Inc.
$21
Amarin Pharma Inc.
$20
Gilead Sciences, Inc.
$13
Top 3 companies account for 66.3% of all-time payments
Associated products mentioned in payments ›
(5044) MCOT · (6557) Mechanical Tools · ACCOLADE · ACCOLADE SR · ACUITY · ACUTHERM Catheter · ATRICLIP LAA EXCLUSION SYSTEM · AURORA EV-ICD MRI SURESCAN · AVEIR · Absolute Pro vascular stent system · Acticor 7 VR-T DX · Advisa · Arcalyst · Azure · BodyGuardian · CAMZYOS · CARTO 3 · CLINICAL TRIAL PRODUCT · CONFIRM RX · CareLink · Carto 3 · Carto 3 System · Claria MRI · Cobalt · Confirm Rx · Corlanor · DYNAGEN · ELIQUIS · EMBLEM · EMBLEM MRI S-ICD · EMBLEM S ICD ELECTRODE DELIVERY SYSTEM · ENTRESTO · Ellipse ICD · FARXIGA · FINELINE · FUROSCIX · Fortify Assura · GENERAL TACHY · GENERAL THERAPIES · GENERAL - BRADY · GENERAL - TACHY · GENERAL TACHY · GENERAL THERAPIES · HeartMate 3 Left Ventricular Dev · Hillrom - Carnation Ambulatory Monitor · INGEVITY · Inpefa · JARDIANCE · Kerendia · LATITUDE · LEQVIO · LINQ II · LUX-Dx Insertable Cardiac Monitor · LifeVest · MICRA · MRI Ready Leads · MULTAQ · MYCARELINK · Merlin Connectivity and Remote · Micra · MyCareLink · MyCareLink Smart · OCTARAY MAPPING CATHETER · ONPATTRO · ONYX FRONTIER · OPTIMIZER · PENTARAY · PRADAXA · PRALUENT · Perclose ProGlide suture mediated closure system · Perclose ProStyle · Quadra Assura CRT Defibrillator · RELIANCE 4FRONT · RESONATE · RESONATE EL ICD VR · REVEAL LINQ · Repatha · Reveal LINQ · Rivacor · SAPIEN 3 Ultra RESILIA · SEEQ · SELECTSECURE · SureFix · TENDRIL · TYRX · TactiCath Quartz CFA Catheter · UPTRAVI · VENASEAL · VERQUVO · VYNDAQEL · Vascepa · VenaSeal · Verquvo · WAINUA · WATCHMAN Access System · WATCHMAN FLX · XARELTO · ZIO XT Patch · fisherbrand Disposable Liquid Infant Heel Warmer
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 (63%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Cardiologists within 10 mi
510
Per 100K population
5.2
County median income
$87,760
Nearest hospital
USC ARCADIA HOSPITAL
1.3 mi
1.3 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 an electrophysiology & remote specialist, with above-average Medicare volume (top 18% in CA), with low-engagement industry engagement in the top 17% 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 682 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 $20,070 from 33 companies across 496 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 cardiologists in Arcadia?
Dr. Liu's average Medicare payment per service is $130. 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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