Medicare Enrolled
Dr. Tuan Nguyen, M.D.
Cardiovascular Disease · Austin, TX
Practice pattern: Cardiac & Electrophysiology
— Practice combining cardiac and electrophysiology services
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. Nguyen 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. Nguyen
Dr. Tuan Nguyen is a cardiovascular disease specialist in Austin, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Nguyen performed 4,102 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Nguyen received a total of $40,953 from 23 pharmaceutical and/or device companies across 168 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Nguyen 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.
✓ 20 years of NPI registration
▲ Top 26% volume in TX
$40,953 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗4,102
Medicare services
Top 26% in TX for cardiovascular disease
Not available
Unique patients (not deduplicated)
$66
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
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. |
876 | $11 | $51 |
| 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. |
825 | $90 | $325 |
| External counterpulsation, per treatment session | 525 | $79 | $900 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
353 | $107 | $470 |
| 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. |
211 | $63 | $221 |
| Regadenoson injection (Lexiscan) for heart stress test An injection of regadenoson, a medication used to stress the heart during diagnostic testing. |
200 | $42 | $162 |
| 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. |
138 | $218 | $921 |
| 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. |
123 | $85 | $363 |
| Initial hospital admission, moderate complexity Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter. |
97 | $94 | $415 |
| 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. |
93 | $60 | $232 |
| 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. |
89 | $11 | $45 |
| Technetium Tc-99m sestamibi diagnostic injection A diagnostic injection of technetium Tc-99m sestamibi used for imaging studies. |
80 | $51 | $433 |
| 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. |
68 | $16 | $68 |
| 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. |
59 | $51 | $220 |
| 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. |
49 | $114 | $494 |
| CT scan of heart with contrast A computed tomography scan that uses contrast dye to create detailed images of the heart's structure. |
47 | $65 | $266 |
| CT coronary angiography data analysis Review of CT scan data to assess the severity of heart artery disease and examine anatomical details. |
34 | $53 | $210 |
| Transesophageal echocardiogram during heart surgery An ultrasound of the heart performed using a probe inserted into the esophagus while surgery on the heart or major blood vessels is taking place, including a written report. |
30 | $173 | $705 |
| Transesophageal echocardiogram An ultrasound of the heart performed using a probe inserted into the esophagus to obtain detailed images of heart structures and function. |
25 | $82 | $336 |
| Echocardiogram, transthoracic An ultrasound test that uses sound waves to create images of the heart's blood flow, valves, and chambers. |
24 | $14 | $56 |
| Echocardiogram with color Doppler An ultrasound of the heart that uses color imaging to visualize blood flow, measure flow rate, and assess valve function. |
24 | $2 | $10 |
| Follow-up heart ultrasound An ultrasound of the heart performed to monitor or reassess a previously identified condition or treatment progress. |
21 | $20 | $79 |
| Exercise or drug-induced heart stress test with ECG A test that monitors the heart's electrical activity while the patient exercises or receives medication to increase heart rate. |
19 | $21 | $98 |
| External shock to heart to regulate heart beat A procedure that delivers an electric shock to the heart from outside the body to restore a normal heart rhythm. |
15 | $87 | $338 |
| 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. |
15 | $10 | $45 |
| External EKG monitoring, 8-15 days Continuous external electrocardiogram recording and review over a period of 8 to 15 days to monitor heart rhythm. |
15 | $21 | $76 |
| 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. |
12 | $10 | $45 |
| Continuous EKG monitoring review, 48-7 days Review and interpretation of continuous external EKG recordings lasting more than 48 hours up to 7 days. |
12 | $19 | $70 |
| 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. |
12 | $159 | $625 |
| Continuous ECG monitoring, up to 30 days Continuous heart rhythm monitoring for up to 30 days, including professional review and reporting of the results. |
11 | $20 | $80 |
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. These counts do not measure clinical quality or years of experience.
9.9% high complexity
22.1% medium
68.0% routine
Industry Payment Transparency
Open Payments through 2024 ↗$40,953
Total received (2018-2024)
Avg $5,850/year across 7 years
Top 12% in TX for cardiovascular disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
23
Companies
168
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$23,356
2023
$11,441
2022
$791
2021
$1,691
2020
$500
2019
$1,551
2018
$1,624
Payments by company (2024)
HEARTFLOW, INC.
$23,013
E.R. Squibb & Sons, L.L.C.
$172
Biosense Webster, Inc.
$76
Janssen Pharmaceuticals, Inc
$31
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$23
iRhythm Technologies, Inc.
$22
PFIZER INC.
$19
Top 3 companies account for 99.6% of 2024 payments
All-time payments by company (2018-2024) ›
HEARTFLOW, INC.
$23,013
HeartFlow, Inc.
$12,937
Abbott Laboratories
$2,434
BOSTON SCIENTIFIC CORPORATION
$569
ATRICURE, INC.
$467
E.R. Squibb & Sons, L.L.C.
$206
Impulse Dynamics (USA) Inc.
$185
Janssen Pharmaceuticals, Inc
$171
Medtronic Vascular, Inc.
$142
CVRx, Inc.
$133
Edwards Lifesciences Corporation
$117
Amgen Inc.
$97
Astellas Pharma US Inc
$91
Biosense Webster, Inc.
$76
Novartis Pharmaceuticals Corporation
$63
PFIZER INC.
$59
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$51
iRhythm Technologies, Inc.
$49
Boston Scientific Corporation
$35
Actelion Pharmaceuticals US, Inc.
$20
Boehringer Ingelheim Pharmaceuticals, Inc.
$13
AtriCure, Inc.
$12
Gilead Sciences, Inc.
$12
Top 3 companies account for 93.7% of all-time payments
Associated products mentioned in payments ›
Ablation Therapy Hardware · Assurity Pacemaker · Barostim Neo System · CAMZYOS · CARDIOMEMS · CARTO 3 · CRT-Ds · Cardiac Mapping System · CardioMEMS HF System · Confirm Rx · CoreValve Evolut · Corlanor · ELIQUIS · ENTRESTO · EPI-SENSE GUIDED COAGULATION SYSTEM WITH VISITRAX · Edwards SAPIEN 3 Transcatheter Heart Valve · EnSite Precision Cardiac Mapping System · Ensite Cardiac Mapping System · FFRct · GENERAL THERAPIES · GENERAL PAIN MANAGEMENT · HeartMate 3 Left Ventricular Assist Device · LEXISCAN · LUX DX · LifeVest · OPSUMIT · OPTIMIZER · PRADAXA · Repatha · SYNERGY ABLATION SYSTEM · VYNDAQEL · WATCHMAN · XARELTO · ZIO Patch · ZIO XT Patch
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. 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 →
Geographic Context
Cardiologists in nearby ZIP areas
92
County median income
$97,169
Nearest hospital to ZIP centroid (approximate)
ASCENSION SETON MEDICAL CENTER AUSTIN
0.0 mi
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | 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. Nguyen is a cardiac & electrophysiology specialist, with above-average Medicare volume (top 26% in TX), with 20 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. Nguyen experienced with electrocardiogram (ekg), 12-lead?
Based on Medicare claims data, Dr. Nguyen performed 876 electrocardiogram (ekg), 12-lead services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Nguyen receive payments from pharmaceutical companies?
Yes. Dr. Nguyen received a total of $40,953 from 23 companies across 168 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. 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. Nguyen's costs compare to other cardiologists in Austin?
Dr. Nguyen's average Medicare payment per service is $66. 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. Nguyen) 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 the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. 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?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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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