Medicare Enrolled
Dr. Eugene Chang, MD, PHD
Cardiovascular Disease · Marysville, WA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
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. Chang 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. Chang
Dr. Eugene Chang is a cardiovascular disease specialist in Marysville, WA, with 11 years of NPI registration. Based on federal Medicare data, Dr. Chang performed 16,359 Medicare services across 2,787 unique beneficiaries.
Between the years covered by Open Payments, Dr. Chang received a total of $3,061 from 20 pharmaceutical and/or device companies across 77 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. Chang 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.
✓ 11 years in practice
▲ Top 0% volume in WA
$3,061 industry payments
Medicare Practice Summary
Medicare Utilization ↗16,359
Medicare services
Top 0% in WA for cardiovascular disease
2,787
Unique beneficiaries
$18
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~1,487 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 |
|---|---|---|---|
| Contrast dye for imaging (iodine-based) A contrast agent containing 300-399 mg/ml of iodine used to enhance imaging studies. It is administered per milliliter to improve the visibility of internal structures. |
13,327 | $0 | $1 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
465 | $155 | $634 |
| 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. |
402 | $6 | $23 |
| New patient office visit, complex (60-74 min) | 353 | $164 | $577 |
| 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. |
243 | $136 | $429 |
| Regadenoson injection (Lexiscan) for heart stress test An injection of regadenoson, a medication used to stress the heart during diagnostic testing. |
212 | $42 | $117 |
| External EKG monitoring, 8-15 days Continuous external electrocardiogram recording and review over a period of 8 to 15 days to monitor heart rhythm. |
194 | $19 | $76 |
| Technetium Tc-99m sestamibi diagnostic injection A diagnostic injection of technetium Tc-99m sestamibi used for imaging studies. |
180 | $38 | $670 |
| CT scan of heart blood vessels and grafts with contrast A CT scan that uses contrast dye to create detailed images of the heart's blood vessels and any surgical grafts. |
132 | $238 | $1,148 |
| 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. |
131 | $10 | $43 |
| Nuclear stress test of heart muscle A nuclear medicine imaging test that evaluates blood flow to the heart muscle at rest and during stress using a special camera. |
130 | $362 | $1,366 |
| 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. |
83 | $97 | $310 |
| CT scan of heart for calcium evaluation A CT scan of the heart used to evaluate calcium levels in the blood vessels. |
49 | $77 | $211 |
| 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. |
48 | $12 | $75 |
| 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. |
44 | $53 | $224 |
| Technetium Tc-99m tetrofosmin diagnostic injection A diagnostic injection of Technetium Tc-99m tetrofosmin used for imaging studies. |
27 | $76 | $123 |
| 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. |
26 | $139 | $550 |
| 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. |
26 | $93 | $283 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
25 | $8 | $15 |
| Continuous EKG monitoring review, 48-7 days Review and interpretation of continuous external EKG recordings lasting more than 48 hours up to 7 days. |
25 | $18 | $66 |
| Transesophageal echocardiogram An ultrasound of the heart performed using a probe inserted into the esophagus to obtain detailed images of heart structures and function. |
24 | $85 | $306 |
| Blood creatinine level test A blood test that measures the amount of creatinine, a waste product from muscle wear and tear, to help assess kidney function. |
23 | $5 | $12 |
| MRI of heart with and without contrast A magnetic resonance imaging scan of the heart performed both before and after the administration of a contrast dye to enhance image detail. |
19 | $88 | $349 |
| MRI of heart blood flow An MRI scan that visualizes the flow of blood within the heart. |
18 | $8 | $34 |
| 2-day continuous ECG with professional review A two-day continuous electrocardiogram recording that includes a review by a healthcare professional. |
17 | $15 | $132 |
| Echocardiogram, transthoracic An ultrasound test that uses sound waves to create images of the heart's blood flow, valves, and chambers. |
17 | $14 | $51 |
| 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. |
15 | $170 | $761 |
| Echocardiogram with color Doppler An ultrasound of the heart that uses color imaging to visualize blood flow, measure flow rate, and assess valve function. |
14 | $14 | $83 |
| 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. |
14 | $10 | $34 |
| Prolonged office E/M service, first 15 minutes This code is used for additional time spent by a physician beyond the maximum required time of a primary office or outpatient evaluation and management service. It is billed in 15-minute increments based on total time spent on the date of the primary service. |
14 | $26 | $88 |
| Continuous external EKG monitoring, 48 hours to 7 days This procedure involves recording the heart's electrical activity continuously using an external device for a period exceeding 48 hours but not more than 7 days. |
13 | $10 | $42 |
| Heart muscle strain imaging | 13 | $26 | $119 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
12 | $13 | $43 |
| Follow-up heart ultrasound An ultrasound of the heart performed to monitor or reassess a previously identified condition or treatment progress. |
12 | $58 | $267 |
| Follow-up ultrasound of heart blood flow, valves and chambers An ultrasound exam that follows up on the heart's blood flow, valves, and chambers. It uses sound waves to create images of the heart's structure and function. |
12 | $17 | $79 |
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.
3.0% high complexity
86.8% medium
10.2% routine
Industry Payment Transparency
Open Payments through 2024 ↗$3,061
Total received (2018-2024)
Avg $612/year across 5 years
Top 25% in WA for cardiovascular disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
20
Companies
77
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
$2,805 (91.6%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$256 (8.4%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$1,837
2021
$372
2020
$233
2019
$325
2018
$294
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
INTUITIVE SURGICAL, INC.
$1,533
Philips North America LLC
$113
GE HEALTHCARE
$112
ABIOMED
$36
Teleflex LLC
$29
Janssen Pharmaceuticals, Inc
$14
Top 3 companies account for 95.7% of 2024 payments
All-time payments by company (2018-2024) ›
INTUITIVE SURGICAL, INC.
$1,533
PFIZER INC.
$210
Abbott Laboratories
$194
Lantheus Medical Imaging, Inc.
$134
Philips North America LLC
$113
GE HEALTHCARE
$112
Medtronic Vascular, Inc.
$109
Astellas Pharma US Inc
$100
Janssen Pharmaceuticals, Inc
$85
Amgen Inc.
$76
AstraZeneca Pharmaceuticals LP
$69
Otsuka America Pharmaceutical, Inc.
$61
Relypsa, Inc.
$55
GENZYME CORPORATION
$43
ABIOMED
$36
Teleflex LLC
$29
Siemens Medical Solutions USA, Inc.
$29
Lundbeck LLC
$27
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$26
Getinge USA Sales, LLC
$21
Top 3 companies account for 63.3% of all-time payments
Associated products mentioned in payments ›
(BK5) Azurion 5 M20 · BRILINTA · CARDIOSAVE HYBRID · CHANTIX · CardioMEMS HF System · Claria MRI · Corlanor · DEFINITY · Da Vinci Surgical System · Definity · ELIQUIS · EnSite Precision Cardiac Mapping System · FABRAZYME · GUIDELINER · HawkOne · HeartMate 3 Left Ventricular Assist Device · HeartMate 3 Left Ventricular Dev · HeartWare HVAD · IN.PACT Admiral · Impella · LifeVest · NORTHERA · Repatha · SAMSCA · SOMATOM GO · TYPE B PLUG · VYNDAQEL · Veltassa · XARELTO
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 (92%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Cardiologists within 10 mi
57
Per 100K population
6.8
County median income
$107,982
Nearest hospital
SMOKEY POINT BEHAVIORAL 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. Chang is a mixed practice specialist, with above-average Medicare volume (top 0% in WA), with low-engagement industry engagement.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Chang experienced with contrast dye for imaging (iodine-based)?
Based on Medicare claims data, Dr. Chang performed 13,327 contrast dye for imaging (iodine-based) 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. Chang receive payments from pharmaceutical companies?
Yes. Dr. Chang received a total of $3,061 from 20 companies across 77 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. Chang's costs compare to other cardiologists in Marysville?
Dr. Chang's average Medicare payment per service is $18. 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. Chang) 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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