Medicare Enrolled
Dr. Ngai Nguyen, MD
Cardiovascular Disease · San Jose, CA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
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. 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. Ngai Nguyen is a cardiovascular disease specialist in San Jose, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Nguyen performed 6,372 Medicare services across 2,255 unique beneficiaries.
Between the years covered by Open Payments, Dr. Nguyen received a total of $6,712 from 29 pharmaceutical and/or device companies across 197 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. 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.
✓ 19 years in practice
▲ Top 13% volume in CA
$6,712 industry payments
Medicare Practice Summary
Medicare Utilization ↗6,372
Medicare services
Top 13% in CA for cardiovascular disease
2,255
Unique beneficiaries
$59
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~335 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 |
|---|---|---|---|
| Adenosine injection, 1 mg Administration of a 1 mg dose of adenosine medication. This code is specifically for adenosine and excludes adenosine phosphate compounds. |
3,173 | $0 | $7 |
| 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. |
944 | $117 | $239 |
| 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. |
403 | $80 | $162 |
| Technetium Tc-99m sestamibi diagnostic injection A diagnostic injection of technetium Tc-99m sestamibi used for imaging studies. |
322 | $66 | $85 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
222 | $205 | $587 |
| 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. |
161 | $484 | $1,221 |
| 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. |
161 | $62 | $189 |
| 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. |
157 | $120 | $293 |
| 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. |
149 | $73 | $156 |
| Pacemaker system evaluation Assessment of a pacemaker device, including single, dual, multiple lead, or leadless systems. |
132 | $17 | $160 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
72 | $13 | $58 |
| 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. |
69 | $14 | $48 |
| Implantable defibrillator system check A check of the implanted defibrillator device to ensure it is functioning correctly. This evaluation covers single, dual, or multiple lead systems. |
65 | $30 | $163 |
| 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. |
48 | $102 | $240 |
| Remote pacemaker rhythm strip evaluation Remote evaluation of pacemaker rhythm strips via telephone. This service covers assessment of single, dual, multiple lead, or leadless pacemaker systems within a 90-day period. |
36 | $45 | $135 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
32 | $35 | $35 |
| Flu vaccine, quadrivalent A flu shot containing four strains of the influenza virus to help prevent seasonal influenza infection. |
31 | $76 | $80 |
| Continuous ECG monitoring, up to 30 days Continuous heart rhythm monitoring for up to 30 days, including professional review and reporting of the results. |
27 | $24 | $58 |
| 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. |
27 | $951 | $1,785 |
| Pacemaker programming, dual lead system Adjustment and configuration of a dual-lead pacemaker device to ensure proper operation and settings. |
27 | $35 | $100 |
| 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. |
26 | $20 | $53 |
| 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. |
26 | $13 | $35 |
| 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. |
22 | $31 | $81 |
| Remote pacemaker/defibrillator monitoring, 90 days Remote evaluation of a pacemaker or implantable defibrillator system within 90 days of the last check. |
21 | $24 | $70 |
| Coronary angiography A procedure to insert a tube into a coronary artery to capture diagnostic images of the heart's blood vessels. |
19 | $156 | $550 |
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.
8.2% high complexity
61.8% medium
29.9% routine
Industry Payment Transparency
Open Payments through 2024 ↗$6,712
Total received (2018-2024)
Avg $959/year across 7 years
Top 34% in CA for cardiovascular disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
29
Companies
197
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
$4,568 (68.1%)
Scientific / Research
Research funding and grants
$1,123 (16.7%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$1,021 (15.2%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$446
2023
$667
2022
$365
2021
$665
2020
$166
2019
$1,620
2018
$2,783
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
BIOTRONIK INC.
$178
Actelion Pharmaceuticals US, Inc.
$70
Novartis Pharmaceuticals Corporation
$64
AstraZeneca Pharmaceuticals LP
$40
Medtronic, Inc.
$26
Kiniksa Pharmaceuticals International, plc
$25
Merck Sharp & Dohme LLC
$24
Boehringer Ingelheim Pharmaceuticals, Inc.
$19
Top 3 companies account for 70.0% of 2024 payments
All-time payments by company (2018-2024) ›
Medtronic Vascular, Inc.
$1,797
Boston Scientific Corporation
$1,280
Amarin Pharma Inc.
$416
Novartis Pharmaceuticals Corporation
$381
BIOTRONIK INC.
$341
AstraZeneca Pharmaceuticals LP
$332
Actelion Pharmaceuticals US, Inc.
$296
Boehringer Ingelheim Pharmaceuticals, Inc.
$241
Bayer HealthCare Pharmaceuticals Inc.
$212
Medtronic, Inc.
$185
Amgen Inc.
$178
Sunovion Pharmaceuticals Inc.
$154
BOSTON SCIENTIFIC CORPORATION
$144
Merck Sharp & Dohme LLC
$132
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)
$125
NESTLE HEALTHCARE NUTRITION INC.
$81
E.R. Squibb & Sons, L.L.C.
$69
Janssen Pharmaceuticals, Inc
$61
Philips Electronics North America Corporation
$57
PFIZER INC.
$50
Nestle HealthCare Nutrition Inc.
$28
Kiniksa Pharmaceuticals International, plc
$25
AbbVie, Inc.
$24
Regeneron Healthcare Solutions, Inc.
$24
Genentech USA, Inc.
$23
Novo Nordisk Inc
$18
SANOFI-AVENTIS U.S. LLC
$17
Ironwood Pharmaceuticals, Inc
$11
Takeda Pharmaceuticals U.S.A., Inc.
$10
Top 3 companies account for 52.1% of all-time payments
Associated products mentioned in payments ›
(5044) MCOT · 3F · Adempas · Amitiza · Arcalyst · BRILINTA · BioMonitor · CHANTIX · Corlanor · Creon · DUZALLO · ELIQUIS · ENTRESTO · EVENITY · FARXIGA · GENERAL THERAPIES · JARDIANCE · LEQVIO · LifeVest · MICRA · MULTAQ · Micra · OPSUMIT · PAMIRA · PRADAXA · PRALUENT ALIROCUMAB INJECTION · Repatha · Rivacor 7 DR-T · Rybelsus · SEEBRI · UTIBRON · VERQUVO · Vascepa · Verquvo · Visia AF · WATCHMAN · WATCHMAN FLX · XARELTO · ZENPEP
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 (68%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Cardiologists within 10 mi
204
Per 100K population
10.7
County median income
$159,674
Nearest hospital
REGIONAL MEDICAL CENTER OF SAN JOSE
1.7 mi
1.7 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. Nguyen is a clinical cardiology specialist, with above-average Medicare volume (top 13% in CA), 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. Nguyen experienced with adenosine injection, 1 mg?
Based on Medicare claims data, Dr. Nguyen performed 3,173 adenosine injection, 1 mg 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. Nguyen receive payments from pharmaceutical companies?
Yes. Dr. Nguyen received a total of $6,712 from 29 companies across 197 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. Nguyen's costs compare to other cardiologists in San Jose?
Dr. Nguyen's average Medicare payment per service is $59. 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 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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