Medicare Enrolled
Dr. Michael Chan, M.D.
Cardiovascular Disease · Orange, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Speaking/Promotional
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. Chan 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. Chan?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Chan
Dr. Michael Chan is a cardiovascular disease specialist in Orange, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Chan performed 797 Medicare services across 683 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chan received a total of $214,196 from 46 pharmaceutical and/or device companies across 746 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in cardiovascular disease. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Chan 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
▲ 797 Medicare services
$214,196 industry payments
Medicare Practice Summary
Medicare Utilization ↗797
Medicare services
Bottom 29% in CA for cardiovascular disease
Lower Medicare volume may reflect subspecialty focus, hospital-based work, or a higher share of non-Medicare patients.
683
Unique beneficiaries
$103
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~42 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. |
209 | $95 | $345 |
| 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. |
80 | $142 | $485 |
| 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. |
49 | $100 | $266 |
| 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. |
44 | $6 | $22 |
| 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. |
40 | $107 | $573 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
36 | $164 | $566 |
| Stress echocardiogram with ECG monitoring An ultrasound of the heart performed while monitoring heart rhythm during rest, exercise, or medication-induced stress, followed by a review and report of the findings. |
36 | $182 | $686 |
| Ultrasound of heart blood vessel or graft An ultrasound exam to evaluate blood flow in a heart blood vessel or graft, including a radiologist's review of the initial vessel. |
34 | $76 | $688 |
| 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. |
34 | $10 | $39 |
| 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. |
34 | $129 | $474 |
| 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. |
29 | $10 | $145 |
| External EKG monitoring, 8-15 days Continuous external electrocardiogram recording and review over a period of 8 to 15 days to monitor heart rhythm. |
26 | $22 | $70 |
| Coronary stent placement A procedure to insert a stent into a coronary artery or its branch to keep it open, using balloon dilation during the process. |
23 | $398 | $1,559 |
| 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. |
22 | $66 | $185 |
| Pacemaker system evaluation Assessment of a pacemaker device, including single, dual, multiple lead, or leadless systems. |
21 | $44 | $165 |
| 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. |
19 | $145 | $514 |
| Additional heart vessel ultrasound evaluation An additional ultrasound assessment of a specific heart blood vessel or graft, including radiologist review. |
17 | $61 | $193 |
| New patient office visit, complex (60-74 min) | 16 | $169 | $591 |
| 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. |
15 | $69 | $245 |
| Cardiac catheterization | 13 | $152 | $2,585 |
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.
11.7% high complexity
20.2% medium
68.1% routine
Industry Payment Transparency
Open Payments through 2024 ↗$214,196
Total received (2018-2024)
Avg $30,599/year across 7 years
Top 4% in CA for cardiovascular disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
46
Companies
746
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.
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$187,492 (87.5%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$26,704 (12.5%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$34,615
2023
$20,191
2022
$48,854
2021
$38,947
2020
$25,327
2019
$23,375
2018
$22,889
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
ABIOMED
$17,600
ShockWave Medical, Inc
$14,824
Recor Medical Inc
$730
Abbott Laboratories
$335
Novartis Pharmaceuticals Corporation
$315
Teleflex LLC
$273
Boston Scientific Corporation
$185
ASAHI INTECC USA, INC.
$118
E.R. Squibb & Sons, L.L.C.
$55
Reflow Medical Inc
$48
PFIZER INC.
$47
Boehringer Ingelheim Pharmaceuticals, Inc.
$31
Medtronic, Inc.
$28
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$26
Top 3 companies account for 95.8% of 2024 payments
All-time payments by company (2018-2024) ›
AstraZeneca Pharmaceuticals LP
$129,014
ABIOMED
$33,008
ShockWave Medical, Inc
$17,312
Abbott Laboratories
$13,081
Philips Electronics North America Corporation
$11,423
Novartis Pharmaceuticals Corporation
$1,703
Edwards Lifesciences Corporation
$1,500
Medtronic, Inc.
$732
Recor Medical Inc
$730
Medtronic Vascular, Inc.
$646
Amgen Inc.
$528
Teleflex LLC
$403
Shockwave Medical, Inc
$381
Janssen Pharmaceuticals, Inc
$375
PFIZER INC.
$327
Cardiovascular Systems Inc.
$326
ASAHI INTECC USA, INC.
$312
Boston Scientific Corporation
$284
E.R. Squibb & Sons, L.L.C.
$250
SANOFI-AVENTIS U.S. LLC
$246
Boehringer Ingelheim Pharmaceuticals, Inc.
$188
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$177
Gilead Sciences, Inc.
$148
BOSTON SCIENTIFIC CORPORATION
$136
Penumbra, Inc.
$125
Bardy Diagnostics, Inc.
$86
Chiesi USA, Inc.
$85
Actelion Pharmaceuticals US, Inc.
$78
Impulse Dynamics (USA) Inc.
$69
Kiniksa Pharmaceuticals, Ltd.
$59
Kowa Pharmaceuticals America, Inc.
$59
HeartFlow, Inc.
$56
Kestra Medical Technology Services, Inc.
$49
Reflow Medical Inc
$48
Astellas Pharma US Inc
$33
CVRx, Inc.
$33
AngioDynamics, Inc.
$32
Terumo Medical Corporation
$22
ARBOR PHARMACEUTICALS, INC.
$22
SCPHARMACEUTICALS INC.
$22
Cardinal Health 200, LLC
$21
Merck Sharp & Dohme Corporation
$17
Xeris Pharmaceuticals, Inc.
$14
Merck Sharp & Dohme LLC
$13
Amarin Pharma Inc.
$13
AtriCure, Inc.
$11
Top 3 companies account for 83.7% of all-time payments
Associated products mentioned in payments ›
(5028) IGT D Systems Und · (5060) Imaging · (6571) Eagle Eye · (6574) Coronary Other · (6575) Coronary Undivided · (9266) ELCA · ALPHAVAC · ASAHI PTCA Guide Wire · AVVIGO Guidance System · Advisa · Arcalyst · Assure WCD · Assurity Pacemaker · Azure · BRILINTA · Barostim Neo System · BodyGuardian · CAMZYOS · CHANTIX · CLEVIPREX · COROFLOW · CardioMEMS HF System · Carnation Ambulatory Monitor · ClosureFast · CoreValve Evolut · Corlanor · Coronary Orbital Atherectomy System · DIAMONDBACK CORONARY · Diamondback Peripheral · Dragonfly OCT · ELIQUIS · ENTRESTO · EPI-SENSE GUIDED COAGULATION SYSTEM WITH VISITRAX · Edarbi · Emboshield NAV6 system · FARXIGA · FUROSCIX · GENERAL THERAPIES · GUIDELINER · HawkOne · IGT D Coronary · IGT Devices Und · INVOKANA · Impella · Indigo System · JARDIANCE · KENGREAL · KEVEYIS · LEQVIO · LEXISCAN · LINQ II · Legacy · LifeVest · Livalo · MODELS · MULTAQ · Micra · NAVICROSS · OPSUMIT · OPTIMIZER · OPTIS · Optimizer · Optis Coronary Imaging System · PARADISE RENAL DENERVATION SYSTEM · PERIPHERAL VASCULAR · PRADAXA · PRESSUREWIRE · Peripheral Orbital Atherectomy System · Repatha · Resolute · Reveal LINQ · SHOCKWAVE IVL SYSTEM WITH THE SHOCKWAVE C2 CORONARY IVL CATHETER · SUPERION · Shockwave IVL System with the Shockwave C2 Coronary IVL Catheter · Spectranetics Undiv · Superion · TURNPIKE · The Swan-Ganz Catheter · UPTRAVI · VENASEAL · VERQUVO · VYNDAQEL · Vascepa · VenaSeal · WAINUA · XARELTO · XIENCE SIERRA · Xience Alpine cornary stent system · Xience Sierra Coronary Stent · Xience Sierra Coronary Stent System · Xience V coronary stent system
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 (88%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in cardiovascular disease and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 4% for cardiovascular disease in CA.
Geographic Context
Cardiologists within 10 mi
332
Per 100K population
10.5
County median income
$113,702
Nearest hospital
PROVIDENCE ST. JOSEPH HOSPITAL
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. Chan is a clinical cardiology specialist, with moderate Medicare volume, with speaking/promotional industry engagement in the top 4% 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. Chan experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Chan performed 209 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. Chan receive payments from pharmaceutical companies?
Yes. Dr. Chan received a total of $214,196 from 46 companies across 746 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. Chan's costs compare to other cardiologists in Orange?
Dr. Chan's average Medicare payment per service is $103. 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. Chan) 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
Cardiologists in Orange
Browse cardiologists in Orange ranked by procedure volume and transparency data.
Highest volume
Top Cardiologists in CA
Cardiologists ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Cardiologists in CA
Which CA cardiologists receive the most from drug and device companies.
By company
AstraZeneca Pharmaceuticals LP Payments to Doctors
See all physicians who received payments from AstraZeneca Pharmaceuticals LP.
By company
ABIOMED Payments to Doctors
See all physicians who received payments from ABIOMED.
By company
ShockWave Medical, Inc Payments to Doctors
See all physicians who received payments from ShockWave Medical, Inc.
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