Medicare Enrolled
Dr. Michael Liou, M.D.
Adult Congenital Heart Disease Physician · New York, NY
Practice pattern: Cardiac Imaging
— Practice with significant diagnostic imaging and stress testing
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. Liou 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. Liou
Dr. Michael Liou is an adult congenital heart disease physician in New York, NY, with 19 years of NPI registration. Based on federal Medicare data, Dr. Liou performed 4,553 Medicare services across 3,192 unique beneficiaries.
Between the years covered by Open Payments, Dr. Liou received a total of $15,166 from 38 pharmaceutical and/or device companies across 498 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in adult congenital heart disease physician. 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. Liou 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 30% volume in NY
$15,166 industry payments
Medicare Practice Summary
Medicare Utilization ↗4,553
Medicare services
Top 30% in NY for adult congenital heart disease physician
3,192
Unique beneficiaries
$208
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~240 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 |
|---|---|---|---|
| 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. |
605 | $11 | $65 |
| 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. |
601 | $77 | $150 |
| Regadenoson injection (Lexiscan) for heart stress test An injection of regadenoson, a medication used to stress the heart during diagnostic testing. |
548 | $22 | $30 |
| 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. |
367 | $98 | $200 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
310 | $157 | $700 |
| 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. |
299 | $177 | $500 |
| Rubidium rb-82, diagnostic, per study dose, up to 60 millicuries | 270 | $347 | $492 |
| 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. |
170 | $60 | $450 |
| 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. |
170 | $222 | $800 |
| 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. |
135 | $1,194 | $4,000 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
123 | $52 | $110 |
| Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts A complete ultrasound exam of the aorta, vena cava, groin vessels, or bypass grafts. This imaging test uses sound waves to visualize these blood vessels. |
116 | $137 | $450 |
| 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. |
109 | $172 | $500 |
| Additional sedation, per 15 minutes Administration of a drug to deepen sedation during a procedure. This code covers each additional 15-minute increment of sedation beyond the initial period. |
78 | $11 | $25 |
| Technetium Tc-99m sestamibi diagnostic injection A diagnostic injection of technetium Tc-99m sestamibi used for imaging studies. |
70 | $27 | $36 |
| Complete ultrasound of brain blood flow An ultrasound test that evaluates blood flow within the brain's blood vessels. It uses sound waves to create images of the vessels and assess circulation. |
69 | $239 | $500 |
| 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. |
53 | $141 | $240 |
| Ultrasound of arm and leg arteries A non-invasive imaging test that uses sound waves to examine the blood vessels in the arms and legs. It evaluates blood flow and checks for blockages or other vascular issues. |
46 | $113 | $350 |
| Smoking cessation counseling, 4-10 minutes A brief counseling session focused on helping patients quit smoking and tobacco use. The provider spends 4 to 10 minutes discussing strategies and support for cessation. |
39 | $17 | $50 |
| 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. |
35 | $401 | $800 |
| Continuous ECG monitoring, up to 30 days Continuous heart rhythm monitoring for up to 30 days, including professional review and reporting of the results. |
30 | $23 | $45 |
| Arterial line insertion A tube is inserted into an artery through the skin to allow for blood sampling or infusion. |
29 | $40 | $100 |
| Ultrasound guidance for blood vessel access Use of ultrasound imaging to help locate and access a blood vessel. This guidance assists healthcare providers in performing procedures such as inserting IV lines or drawing blood. |
29 | $37 | $80 |
| 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 | $47 | $120 |
| Radiologist review of arm or leg artery image A radiologist reviews images of the arteries in the arm or leg. This process involves analyzing the visual data to assess the blood vessels. |
28 | $140 | $300 |
| Ultrasound of leg arteries or grafts An ultrasound exam that uses sound waves to create images of the arteries in one leg or any grafts present in that leg. |
28 | $118 | $400 |
| Arterial plaque removal, initial vessel A procedure to remove plaque buildup from an artery in the leg. This is performed on the first vessel treated during the session. |
27 | $8,453 | $20,000 |
| 30-day continuous ECG with patient-triggered event transmission and review This procedure involves continuous electrocardiogram monitoring for up to 30 days, including the transmission of patient-triggered events. A healthcare professional reviews the data and provides a report. |
26 | $757 | $1,200 |
| Injection, dobutamine hydrochloride, per 250 mg | 20 | $7 | $40 |
| Ultrasound of blood vessel, initial vessel An ultrasound exam of a blood vessel that includes a radiologist's review of the initial vessel. |
17 | $904 | $3,000 |
| Additional blood vessel ultrasound evaluation An ultrasound exam of a blood vessel that includes a radiologist's review. This code applies to each additional vessel evaluated beyond the initial one. |
17 | $161 | $500 |
| Aortic tube insertion A procedure to place a tube into the aorta, the main artery carrying blood from the heart to the rest of the body. |
16 | $281 | $1,500 |
| Arterial plaque removal in leg A procedure to remove plaque buildup from the arteries in the leg to restore blood flow. |
16 | $4,160 | $20,000 |
| Radiologist review of abdominal aorta and leg artery images A radiologist reviews images of the abdominal aorta and the arteries in both legs. This process involves analyzing the visual data to assess the condition of these blood vessels. |
15 | $145 | $300 |
| Arterial puncture or catheterization, arm or leg Insertion of a needle or tube into an artery in the arm or leg. This procedure is used to access the arterial system for diagnostic or therapeutic purposes. |
13 | $241 | $750 |
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.
9.6% high complexity
38.7% medium
51.7% routine
Industry Payment Transparency
Open Payments through 2024 ↗$15,166
Total received (2018-2024)
Avg $2,167/year across 7 years
Top 27% in NY for adult congenital heart disease physician
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
38
Companies
498
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
$13,515 (89.1%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$1,272 (8.4%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$379 (2.5%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$2,428
2023
$3,441
2022
$2,438
2021
$2,302
2020
$1,001
2019
$1,789
2018
$1,767
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
AstraZeneca Pharmaceuticals LP
$294
BIOTRONIK INC.
$285
E.R. Squibb & Sons, L.L.C.
$285
Novartis Pharmaceuticals Corporation
$284
Boehringer Ingelheim Pharmaceuticals, Inc.
$283
Merck Sharp & Dohme LLC
$227
Boston Scientific Corporation
$171
Abbott Laboratories
$152
SANOFI-AVENTIS U.S. LLC
$133
Janssen Pharmaceuticals, Inc
$87
Amgen Inc.
$86
Bayer Healthcare Pharmaceuticals Inc.
$50
PFIZER INC.
$27
Novo Nordisk Inc
$20
Lilly USA, LLC
$17
Lexicon Pharmaceuticals, Inc.
$14
ABBVIE INC.
$14
Top 3 companies account for 35.6% of 2024 payments
All-time payments by company (2018-2024) ›
Boston Scientific Corporation
$1,302
Janssen Pharmaceuticals, Inc
$1,222
SANOFI-AVENTIS U.S. LLC
$1,137
Abbott Laboratories
$1,093
AstraZeneca Pharmaceuticals LP
$1,085
BOSTON SCIENTIFIC CORPORATION
$1,024
Novartis Pharmaceuticals Corporation
$978
Boehringer Ingelheim Pharmaceuticals, Inc.
$874
Amarin Pharma Inc.
$720
Merck Sharp & Dohme LLC
$674
E.R. Squibb & Sons, L.L.C.
$593
BIOTRONIK INC.
$464
W. L. Gore & Associates, Inc.
$450
Esperion Therapeutics, Inc.
$403
Becton, Dickinson and Company
$379
Amgen Inc.
$353
Kowa Pharmaceuticals America, Inc.
$304
Bard Peripheral Vascular, Inc.
$286
Bolton Medical Inc
$274
Medtronic, Inc.
$235
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$165
Bayer Healthcare Pharmaceuticals Inc.
$157
ABIOMED
$149
HeartFlow, Inc.
$145
Lexicon Pharmaceuticals, Inc.
$134
Regeneron Healthcare Solutions, Inc.
$108
Astellas Pharma US Inc
$80
IBSA Pharma Inc.
$68
PFIZER INC.
$49
Cardiovascular Systems Inc.
$47
Bayer HealthCare Pharmaceuticals Inc.
$40
Lilly USA, LLC
$38
Novo Nordisk Inc
$36
BRACCO DIAGNOSTICS INC.
$30
Bausch Health US, LLC
$23
ARBOR PHARMACEUTICALS, INC.
$19
Azurity Pharmaceuticals, Inc.
$14
ABBVIE INC.
$14
Top 3 companies account for 24.1% of all-time payments
Associated products mentioned in payments ›
ANGIOJET · APLENZIN · Adempas · BIOMONITOR · BRILINTA · CAMZYOS · CARDIOGEN · CAROTID WALLSTENT · CardioMEMS HF System · Coronary Orbital Atherectomy System · DIAMONDBACK PERIPHERAL · ELIQUIS · EMBLEM MRI S-ICD · EMBOZENE · ENTRESTO · EPIC VASCULAR · Edarbi · Edarbyclor · FARXIGA · FFR LINK · FFRct · GENERAL ATHERECTOMY · GENERAL - THERAPIES · GENERAL ATHERECTOMY · IDC · INTERLOCK · Impella · Inpefa · JARDIANCE · Kerendia · LEQVIO · LINZESS · LIVALO · LOKELMA · LUTONIX · LUX-Dx Insertable Cardiac Monitor · Livalo · MOUNJARO · MULTAQ · Mitra Clip system · NEXLETOL · NEXLIZET · NURTEC ODT · Ozempic · PRALUENT · Peripheral Orbital Atherectomy System · Product in Development · RESOLUTE ONYX · ROTABLATOR · Relay Grafts · Relay Plus · Repatha · Resolute · RotarexS 6 F x 135 cm · SAMURAI · SEGLENTIS · TRULANCE · Tirosint · VERQUVO · Vascepa · WAINUA · WOLVERINE · XARELTO · XIFAXAN · Xience Sierra Coronary Stent
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 (89%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Adult congenital heart disease physicians within 10 mi
8
Per 100K population
0.5
County median income
$104,553
Nearest hospital
NY EYE AND EAR INFIRMARY OF MOUNT SINAI
1.2 mi
1.2 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. Liou is a cardiac imaging specialist, with above-average Medicare volume (top 30% in NY), with low-engagement industry engagement, 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. Liou experienced with electrocardiogram (ekg), 12-lead?
Based on Medicare claims data, Dr. Liou performed 605 electrocardiogram (ekg), 12-lead 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. Liou receive payments from pharmaceutical companies?
Yes. Dr. Liou received a total of $15,166 from 38 companies across 498 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. Liou's costs compare to other adult congenital heart disease physicians in New York?
Dr. Liou's average Medicare payment per service is $208. 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. Liou) 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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