Medicare Enrolled
Dr. Khoa Nguyen, MD
Family Medicine · Houston, TX
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 →
Are you Dr. Nguyen?
Request a correction or review of any data shown here. Provider portal →
What this data tells you about Dr. Nguyen
Dr. Khoa Nguyen is a family medicine specialist in Houston, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Nguyen performed 3,930 Medicare services across 1,649 unique beneficiaries.
Between the years covered by Open Payments, Dr. Nguyen received a total of $3,091 from 36 pharmaceutical and/or device companies across 198 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in family medicine. 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. This is not a quality rating. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 20 years in practice
▲ Top 5% volume in TX
$3,091 industry payments
Medicare Practice Summary
Medicare Utilization ↗3,930
Medicare services
Top 5% in TX for family medicine
1,649
Unique beneficiaries
$64
Avg. Medicare payment
Medicare patients only (65+ / disabled) · Not a quality rating · How to read this →
~196 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. |
555 | $91 | $166 |
| Nursing facility visit, low complexity A daily follow-up visit for an existing patient in a nursing facility involving straightforward medical decision making. The visit requires at least 15 minutes of time if time is used to determine the level of care. |
484 | $59 | $99 |
| Remote vital sign monitoring management, each additional 20 minutes This code covers the time spent by a provider managing patient data from remote vital sign monitoring devices. It applies to each additional 20-minute increment beyond the initial monthly service period. |
452 | $31 | $88 |
| 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. |
398 | $66 | $121 |
| Remote patient monitoring device, 30 days Initial setup of devices for remote monitoring of body functions with daily data transmission or alerts. This service covers the first 30 days of the monitoring period. |
305 | $37 | $130 |
| Telephone medical discussion, 5-10 minutes A phone conversation with a physician lasting between 5 and 10 minutes to discuss medical matters. |
301 | $28 | $99 |
| Remote patient monitoring management, 20 min/month Management based on results from remote vital sign monitoring for the first 20 minutes per calendar month. |
293 | $37 | $106 |
| Telephone medical discussion, 11-20 minutes A phone conversation with a physician lasting between 11 and 20 minutes. |
172 | $55 | $149 |
| 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. |
101 | $97 | $284 |
| Expiratory airflow and volume test A test that measures the amount of air you can exhale and the speed at which you can breathe it out. It evaluates lung function by assessing expiratory airflow and volume. |
74 | $21 | $73 |
| 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. |
72 | $11 | $36 |
| Ultrasound of arm and leg arteries This procedure uses sound waves to create images of the blood vessels in the arms and legs. It allows healthcare providers to examine the structure and blood flow within these arteries. |
58 | $58 | $182 |
| 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. |
50 | $170 | $600 |
| Ultrasound of brain blood flow following medication An ultrasound test used to assess blood flow within the brain after a medication has been administered. |
50 | $183 | $650 |
| Ultrasound of brain blood flow An ultrasound test used to examine blood flow within the brain to check for blood clots. |
50 | $133 | $700 |
| Autonomic nervous system testing with heart rate response to deep breathing This test evaluates the function of the autonomic nervous system by measuring how the heart rate changes in response to deep breathing. |
47 | $71 | $180 |
| Autonomic nervous system function test This test evaluates how well the sympathetic nervous system is functioning. It assesses the automatic control of bodily processes such as heart rate and blood pressure. |
47 | $100 | $268 |
| Nursing facility visit, moderate complexity A follow-up visit by a healthcare provider at a nursing facility for an established patient. The visit involves moderate medical decision making and takes at least 30 minutes. |
38 | $85 | $135 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
37 | $129 | $196 |
| Balance and posture test A test to evaluate a patient's balance and posture. This assessment measures stability and body alignment. |
34 | $35 | $200 |
| 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. |
22 | $132 | $258 |
| Auditory brainstem response test A test that measures how the brain responds to sound to help diagnose nervous system disorders. The results are interpreted and reported by a medical professional. |
21 | $68 | $170 |
| Electrocardiogram, 1-3 leads with physician review A heart rhythm test using one to three electrodes to record electrical activity, with interpretation by a physician. |
20 | $10 | $28 |
| 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. |
20 | $137 | $300 |
| Awake and drowsy EEG A test that records electrical activity in the brain while the patient is awake and drowsy. |
20 | $294 | $760 |
| Visual evoked potential test A test that measures how quickly electrical signals travel from the eye to the brain in response to visual stimuli. |
20 | $54 | $140 |
| Digital analysis of brain wave activity (EEG) This procedure involves the digital analysis of brain wave activity recorded via an electroencephalogram (EEG). It focuses on the technical interpretation of the digital data rather than the initial recording or supervision. |
20 | $223 | $534 |
| Neuropsychological test evaluation, first hour A professional assessment of cognitive and behavioral functioning using standardized tests. This service covers the initial hour of the evaluation process. |
20 | $99 | $272 |
| Echocardiogram, transthoracic An ultrasound of the heart that uses color to show blood flow, rate, direction, and valve function. |
19 | $143 | $313 |
| Complete ultrasound of abdomen A diagnostic imaging test that uses sound waves to create detailed pictures of the organs and structures within the abdomen. |
18 | $81 | $297 |
| Balance testing with recording A procedure to evaluate balance function by recording the results during testing. |
18 | $88 | $210 |
| Psychological test administration, each additional 30 minutes A technician administers psychological or neuropsychological testing. This code covers each additional 30-minute increment of administration time. |
18 | $28 | $80 |
| Ultrasound of head and neck soft tissue This procedure uses sound waves to create images of the soft tissues in the head and neck area. It allows for the visualization of structures beneath the skin without using radiation. |
17 | $76 | $293 |
| Psychological test administration, first 30 minutes A technician administers psychological or neuropsychological testing for the first 30 minutes. |
17 | $27 | $80 |
| 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. |
16 | $191 | $329 |
| VEMP testing of inner ear nerve branches This test evaluates the function of the upper and lower branches of the inner ear nerve. It includes the performance of the test along with interpretation and a written report. |
13 | $108 | $280 |
| Vestibular function test with thermal irrigation A test that assesses balance by irrigating both ears with warm and cool fluids to evaluate inner ear function. |
13 | $33 | $84 |
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.
0.5% high complexity
10.7% medium
88.8% routine
Industry Payment Transparency
Open Payments through 2024 ↗$3,091
Total received (2018-2024)
Avg $442/year across 7 years
Top 20% in TX for family medicine
36
Companies
198
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
$3,091 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$189
2023
$404
2022
$266
2021
$567
2020
$417
2019
$548
2018
$701
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Amarin Pharma Inc.
$437
Sunovion Pharmaceuticals Inc.
$417
Teva Pharmaceuticals USA, Inc.
$417
Janssen Pharmaceuticals, Inc
$169
Novartis Pharmaceuticals Corporation
$168
Kowa Pharmaceuticals America, Inc.
$137
Integra LifeSciences Corporation
$109
Sumitomo Pharma America, Inc.
$109
Eisai Inc.
$85
AstraZeneca Pharmaceuticals LP
$75
PFIZER INC.
$65
Abbott Laboratories
$65
Otsuka America Pharmaceutical, Inc.
$65
RedHill Biopharma Inc.
$65
Medtronic MiniMed, Inc.
$62
Astellas Pharma US Inc
$61
Biohaven Pharmaceutical Holding Company Ltd.
$53
Exact Sciences Corporation
$47
Alkermes, Inc.
$47
UROVANT SCIENCES INC
$44
Gilead Sciences, Inc.
$39
ACADIA Pharmaceuticals Inc
$39
GlaxoSmithKline, LLC.
$37
Lilly USA, LLC
$35
Philips Electronics North America Corporation
$31
Optinose US, Inc.
$26
Corium, LLC
$26
Medtronic, Inc.
$25
Nestle HealthCare Nutrition Inc.
$23
VIVUS, Inc.
$21
Janssen Biotech, Inc.
$19
Boston Scientific Corporation
$17
SANOFI-AVENTIS U.S. LLC
$16
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$15
Shield Therapeutics Inc
$14
Avanir Pharmaceuticals, Inc.
$14
Top 3 companies account for 41.1% of total payments
Associated products mentioned in payments ›
(8874) inCourage · (8876) Vest Therapy Und · ACCRUFER · AIRSUPRA · APTIOM · ARISTADA · AUSTEDO · Adlarity · Austedo XR · BILAYER WOUND MATRIX BWM · COLOGUARD DNA CAPTURE REAGENTS · Cologuard Collection Kit · Dayvigo · ENTRESTO · ETERNA · FARXIGA · FreeStyle Libre 2 · GEMTESA · INTELLIS ADAPTIVESTIM · LEQVIO · LOKELMA · LONHALA MAGNAIR · Livalo · MYRBETRIQ · Minimed 530G · Minimed 630G · NUEDEXTA · NUPLAZID · NURTEC ODT · PROCLAIM · QSYMIA · REXULTI · SHINGRIX · SOLIQUA · SYMTUZA · TRULICITY · Talicia · Utibron · Vascepa · XARELTO · XIFAXAN · Xhance · 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 (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Equivalent to $79 per 100 Medicare services performed
Geographic Context
Family medicine physicians within 10 mi
1,663
Per 100K population
34.9
County median income
$73,104
Nearest hospital
WEST OAKS 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 measures how much public data is available about a provider — not how good they are. How we calculate this →
Summary
Dr. Nguyen is a clinical cardiology specialist, with above-average Medicare volume (top 5% in TX), with low-engagement industry engagement in the top 20% of TX peers, with 20 years of NPI registration.
This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. 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 555 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 $3,091 from 36 companies across 198 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 family medicine physicians in Houston?
Dr. Nguyen's average Medicare payment per service is $64. 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 →
Explore related providers
Specialty guide
Understanding Family Medicine
Common procedures, typical costs, and what industry payments mean in family medicine.
Same specialty & city
Family Medicine Physicians in Houston
Browse family medicine physicians in Houston ranked by procedure volume and transparency data.
Highest volume
Top Family Medicine Physicians in TX
Family medicine physicians ranked by total Medicare services performed statewide.
Industry payments
Pharma Payments to Family Medicine Physicians in TX
Which TX family medicine physicians receive the most from drug and device companies.
By company
Amarin Pharma Inc. Payments to Doctors
See all physicians who received payments from Amarin Pharma Inc.
By company
Sunovion Pharmaceuticals Inc. Payments to Doctors
See all physicians who received payments from Sunovion Pharmaceuticals Inc.
By company
Teva Pharmaceuticals USA, Inc. Payments to Doctors
See all physicians who received payments from Teva Pharmaceuticals USA, Inc.
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. The Transparency Score measures 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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology