Medicare Enrolled
Dr. Duc Nguyen, MD
Pulmonary Disease · Simi Valley, 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. Duc Nguyen is a pulmonary disease specialist in Simi Valley, CA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Nguyen performed 6,016 Medicare services across 1,899 unique beneficiaries.
Between the years covered by Open Payments, Dr. Nguyen received a total of $20,224 from 51 pharmaceutical and/or device companies across 792 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in pulmonary 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 4% volume in CA
$20,224 industry payments
Medicare Practice Summary
Medicare Utilization ↗6,016
Medicare services
Top 4% in CA for pulmonary disease
1,899
Unique beneficiaries
$100
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~317 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. |
2,024 | $100 | $250 |
| 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. |
1,857 | $98 | $250 |
| 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. |
635 | $70 | $200 |
| 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. |
274 | $143 | $400 |
| 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. |
265 | $173 | $450 |
| Nursing facility visit, high complexity A follow-up visit by a healthcare provider at a nursing facility for an established patient. The visit involves a high level of medical decision making and takes at least 45 minutes. |
197 | $117 | $200 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
129 | $33 | $50 |
| Flu vaccine, quadrivalent A flu shot containing four strains of the influenza virus to help prevent seasonal influenza infection. |
127 | $76 | $100 |
| Initial nursing facility care, high complexity An initial visit by a healthcare provider to a patient in a nursing facility involving a high level of medical decision making, lasting at least 45 minutes. |
110 | $147 | $250 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
101 | $139 | $350 |
| 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. |
64 | $127 | $400 |
| 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. |
59 | $12 | $45 |
| Annual wellness visit, initial visit A yearly appointment to review your health and create a personalized prevention plan. This initial visit focuses on preventive care and health assessment. |
48 | $176 | $381 |
| 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. |
29 | $12 | $85 |
| Home health plan of care certification Certification by a physician or allowed practitioner for Medicare-covered home health services under a home health plan of care. This includes contacting the home health agency and reviewing reports of patient status required by physicians. |
29 | $44 | $250 |
| Home health agency supervision, complex multidisciplinary care Supervision by a physician or allowed practitioner for a patient receiving Medicare-covered services from a participating home health agency. This involves complex and multidisciplinary care modalities, with the patient not present during the supervision. |
28 | $88 | $300 |
| Spirometry test before and after medication A test that measures the amount of air you can exhale and the speed of your breathing before and after taking a medication. |
25 | $35 | $150 |
| Home health plan of care re-certification A physician reviews the patient's status and contacts the home health agency to re-certify the plan of care without the patient being present. |
15 | $34 | $250 |
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.
Industry Payment Transparency
Open Payments through 2024 ↗$20,224
Total received (2018-2024)
Avg $2,889/year across 7 years
Top 9% in CA for pulmonary disease
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
51
Companies
792
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
$17,338 (85.7%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$2,599 (12.9%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$287 (1.4%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$4,767
2023
$2,813
2022
$2,049
2021
$2,520
2020
$2,163
2019
$2,935
2018
$2,976
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Actelion Pharmaceuticals US, Inc.
$2,599
AstraZeneca Pharmaceuticals LP
$490
Amgen Inc.
$444
GlaxoSmithKline, LLC.
$426
Regeneron Healthcare Solutions, Inc.
$189
Mylan Specialty L.P.
$155
GENZYME CORPORATION
$81
Lilly USA, LLC
$76
Otsuka America Pharmaceutical, Inc.
$67
Bayer Healthcare Pharmaceuticals Inc.
$60
ABBVIE INC.
$55
Boehringer Ingelheim Pharmaceuticals, Inc.
$52
INOGEN, INC.
$34
Insmed, Inc.
$23
PFIZER INC.
$16
Top 3 companies account for 74.1% of 2024 payments
All-time payments by company (2018-2024) ›
Actelion Pharmaceuticals US, Inc.
$4,117
AstraZeneca Pharmaceuticals LP
$3,561
GlaxoSmithKline, LLC.
$3,013
Amgen Inc.
$1,554
Radius Health, Inc.
$596
Regeneron Healthcare Solutions, Inc.
$560
Mylan Specialty L.P.
$525
Boehringer Ingelheim Pharmaceuticals, Inc.
$525
Lilly USA, LLC
$491
GENZYME CORPORATION
$459
Novo Nordisk Inc
$375
PFIZER INC.
$351
Genentech USA, Inc.
$336
E.R. Squibb & Sons, L.L.C.
$334
Novartis Pharmaceuticals Corporation
$303
Janssen Pharmaceuticals, Inc
$294
Allergan Inc.
$275
Allergan, Inc.
$264
Sunovion Pharmaceuticals Inc.
$248
ABBVIE INC.
$233
Gilead Sciences, Inc.
$177
Bayer HealthCare Pharmaceuticals Inc.
$144
AbbVie Inc.
$126
Amarin Pharma Inc.
$108
Merck Sharp & Dohme Corporation
$106
Eisai Inc.
$100
Otsuka America Pharmaceutical, Inc.
$91
Getinge USA Sales, LLC
$91
Bayer Healthcare Pharmaceuticals Inc.
$87
SANOFI-AVENTIS U.S. LLC
$82
Synergy Pharmaceuticals Inc
$71
Biohaven Pharmaceuticals, Inc.
$69
Horizon Therapeutics plc
$53
EISAI INC.
$49
Boston Scientific Corporation
$43
Insmed, Inc.
$39
Advanced Respiratory, Inc
$39
Merck Sharp & Dohme LLC
$38
Philips Electronics North America Corporation
$36
INOGEN, INC.
$34
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$29
Bioventus LLC
$28
Paratek Pharmaceuticals, Inc.
$24
Inspire Medical Systems, Inc.
$22
ACADIA Pharmaceuticals Inc
$21
Electromed, Inc.
$19
ARBOR PHARMACEUTICALS, INC.
$18
Endo Pharmaceuticals Inc.
$18
Pulmonx Corporation
$18
Kowa Pharmaceuticals America, Inc.
$17
Apria Healthcare LLC
$14
Top 3 companies account for 52.9% of all-time payments
Associated products mentioned in payments ›
(7999) SRC Und · ABILIFY ASIMTUFII · AIRSUPRA · ANORO · ANORO ELLIPTA · AREXVY · AVYCAZ · Adempas · Aimovig · Arikayce · BELSOMRA · BEVESPI AEROSPHERE · BREO · BREZTRI · BREZTRI AEROSPHERE · BROVANA · BYSTOLIC · CHANTIX · CHARTIS CATHETER · Cardiohelp · DALVANCE · DUPIXENT · DUPIXENT DUPILUMAB INJECTION · Dayvigo · ELIQUIS · EMGALITY · ENTRESTO · EVENITY · Edarbi · Esbriet · FARXIGA · FASENRA · FORTEO · GLYXAMBI · HUMALOG · INOGEN ONE G5 OXYGEN CONCENTRATOR - BLUETOOTH · INSPIRE · INVOKANA · JANUVIA · JARDIANCE · Kerendia · LATITUDE Communicator Power Supply · LINZESS · LOKELMA · LONHALA MAGNAIR · LYRICA · Life 2000 Ventilation System · Livalo · MOUNJARO · Medela · NASCOBAL · NUCALA · NUPLAZID · NURTEC ODT · NUZYRA · OPSUMIT · OPSUMIT MACITENTAN · Otezla · Ozempic · PAXLOVID · PENNSAID · PIQRAY · QULIPTA · RAYOS · REXULTI · RYBELSUS · Repatha · Rybelsus · SMARTVEST · SPIRIVA · STIOLTO RESPIMAT · SYMBICORT · Supartz FX Sodium Hyaluronate · TAGRISSO · TEZSPIRE · TRADJENTA · TRELEGY ELLIPTA · TRULICITY · The VisiVest Airway Clearance System · Tresiba · Trulance · Tymlos · UBRELVY · UPTRAVI · Utibron · VIBERZI · VRAYLAR · Vascepa · XARELTO · XIFAXAN · XOLAIR · Xolair · YUPELRI · Yupelri · inCourage
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 (86%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians. Total industry engagement is in the top 9% for pulmonary disease in CA.
Geographic Context
Pulmonary diseases within 10 mi
99
Per 100K population
11.8
County median income
$107,327
Nearest hospital
ADVENTIST HEALTH SIMI VALLEY
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. Nguyen is a clinical cardiology specialist, with above-average Medicare volume (top 4% in CA), with low-engagement industry engagement in the top 9% 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. Nguyen experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Nguyen performed 2,024 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. Nguyen receive payments from pharmaceutical companies?
Yes. Dr. Nguyen received a total of $20,224 from 51 companies across 792 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 pulmonary diseases in Simi Valley?
Dr. Nguyen's average Medicare payment per service is $100. 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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