Medicare Enrolled
Dr. Andrew Chen, M.D.
Internal Medicine · San Gabriel, CA
Practice pattern: Electrophysiology & Remote
— Practice combining electrophysiology and remote services
Research-focused
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. Chen 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. Chen
Dr. Andrew Chen is an internal medicine specialist in San Gabriel, CA, with 12 years of NPI registration. Based on federal Medicare data, Dr. Chen performed 2,361 Medicare services across 1,729 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chen received a total of $41,502 from 17 pharmaceutical and/or device companies across 114 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in internal medicine. The majority of payments are classified as research and scientific activities (grants and research funding). Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Chen 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.
✓ 12 years in practice
▲ Top 14% volume in CA
$41,502 industry payments
Medicare Practice Summary
Medicare Utilization ↗2,361
Medicare services
Top 14% in CA for internal medicine
1,729
Unique beneficiaries
$61
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~197 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 |
|---|---|---|---|
| Remote pacemaker/defibrillator monitoring, 90 days Remote evaluation of a pacemaker or implantable defibrillator system within 90 days of the last check. |
376 | $17 | $60 |
| Pacemaker programming, dual lead system Adjustment and configuration of a dual-lead pacemaker device to ensure proper operation and settings. |
364 | $59 | $150 |
| 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. |
352 | $20 | $60 |
| 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. |
224 | $101 | $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. |
193 | $70 | $105 |
| 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. |
177 | $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. |
171 | $99 | $178 |
| 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. |
77 | $143 | $300 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
65 | $173 | $600 |
| External EKG monitoring, 8-15 days Continuous external electrocardiogram recording and review over a period of 8 to 15 days to monitor heart rhythm. |
37 | $22 | $60 |
| Pacemaker programming, single lead Adjustment and testing of a single-lead pacemaker to ensure it functions correctly. |
37 | $52 | $125 |
| 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. |
36 | $11 | $40 |
| 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. |
26 | $27 | $150 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
25 | $126 | $225 |
| Critical care, first 30-74 min Emergency medical care for a critically ill or injured patient lasting between 30 and 74 minutes. This service involves direct patient care and medical decision making to stabilize the patient. |
23 | $177 | $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. |
21 | $39 | $140 |
| Removal and replacement of dual lead permanent pacemaker This procedure involves removing an existing permanent pacemaker with two leads and replacing it with a new device. It is performed to update or repair the heart rhythm management system. |
20 | $293 | $700 |
| 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. |
19 | $427 | $1,500 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while an electrocardiogram is monitored under physician supervision. |
19 | $17 | $100 |
| Exercise or drug-induced heart stress test with ECG A heart stress test performed using exercise or medication while monitoring the electrocardiogram, with physician review of the results. |
19 | $11 | $100 |
| 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. |
19 | $66 | $95 |
| Programming of multiple lead implantable defibrillator system Adjustment and testing of the settings for an implanted heart device with multiple leads to ensure proper function. |
18 | $75 | $230 |
| 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. |
15 | $53 | $250 |
| Ultrasound of heart An imaging test that uses sound waves to create pictures of the heart's structure and function. |
15 | $36 | $150 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
13 | $81 | $180 |
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.
54.1% high complexity
2.2% medium
43.7% routine
Industry Payment Transparency
Open Payments through 2024 ↗$41,502
Total received (2018-2024)
Avg $5,929/year across 7 years
Top 4% in CA for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
17
Companies
114
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.
Scientific / Research
Research funding and grants
$23,611 (56.9%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$6,868 (16.5%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$5,916 (14.3%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$5,107 (12.3%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$10,467
2023
$3,636
2022
$514
2021
$2,653
2020
$18,379
2019
$5,411
2018
$442
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Medtronic, Inc.
$5,008
Biosense Webster, Inc.
$3,291
Medical Device Business Services, Inc.
$1,875
Boston Scientific Corporation
$151
CARDIVA MEDICAL, INC.
$99
BIOTRONIK INC.
$26
Chiesi USA, Inc.
$16
Top 3 companies account for 97.2% of 2024 payments
All-time payments by company (2018-2024) ›
Medtronic Vascular, Inc.
$13,035
Boston Scientific Corporation
$12,401
Medtronic, Inc.
$7,028
Biosense Webster, Inc.
$4,246
Medical Device Business Services, Inc.
$1,875
Abbott Laboratories
$832
BIOTRONIK INC.
$697
CARDIVA MEDICAL, INC.
$589
PROCEPT BioRobotics Corporation
$198
BOSTON SCIENTIFIC CORPORATION
$160
ATRICURE, INC.
$158
AstraZeneca Pharmaceuticals LP
$99
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$57
Novartis Pharmaceuticals Corporation
$53
Philips Electronics North America Corporation
$33
PFIZER INC.
$26
Chiesi USA, Inc.
$16
Top 3 companies account for 78.2% of all-time payments
Associated products mentioned in payments ›
(9124) LM Undivided · ACCOLADE SR · AMVIA EDGE · AQUABEAM ROBOTIC SYSTEM · ATRICLIP LAA EXCLUSION SYSTEM · AZURE XT DR MRI SURESCAN · Acticor · Acticor 7 VR-T DX · Advisor Catheter · Azure · BRILINTA · CARDIVA VASCADE 6/7F VCS · CARDIVA VASCADE MVP VVCS 6-12F · CARTO 3 · CLEVIPREX · CROSSBOSS · CardioMEMS HF System · Carto 3 System · Claria MRI · Cobalt · ELIQUIS · EMBLEM MRI S-ICD · ENSITE · ENTRESTO · EPI-SENSE GUIDED COAGULATION SYSTEM WITH VISITRAX · Edora · EnSite Precision Cardiac Mapping System · GENERAL EP · GENERAL BRADY · GENERAL - BRADY · GENERAL - EP · GENERAL - THERAPIES · LINQ II · LifeVest · MICRA · Merlin Connectivity and Remote · Micra · NUVISION ICE CATHETER · PULSESELECT · RHYTHMIA · Reveal LINQ · Rhythmia Mapping System · Rivacor · SELECTSECURE · Solia · TactiCath Quartz CFA Catheter · WATCHMAN · WATCHMAN FLX · ZOOM
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 (57%) are classified as scientific/research, suggesting involvement in clinical studies, grants, or innovation-related work. Total industry engagement is in the top 4% 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. Chen is an electrophysiology & remote specialist, with above-average Medicare volume (top 14% in CA), with research-focused industry engagement in the top 4% of CA peers.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Chen experienced with remote pacemaker/defibrillator monitoring, 90 days?
Based on Medicare claims data, Dr. Chen performed 376 remote pacemaker/defibrillator monitoring, 90 days 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. Chen receive payments from pharmaceutical companies?
Yes. Dr. Chen received a total of $41,502 from 17 companies across 114 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. Chen's costs compare to other internal medicine physicians in San Gabriel?
Dr. Chen's average Medicare payment per service is $61. 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. Chen) 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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