About Dr. Nguyen
Dr. Thieu Nguyen, MD, is a board-certified Adult Congenital Heart Disease Specialist and Cardiologist practicing in Houston, TX. He specializes in the care and management of adults with congenital heart disease (ACHD), leveraging his thorough understanding of cardiac anatomy, physiology, surgical repairs, and potential long-term complications associated with congenital heart disease. Dr. Nguyen is specially trained to navigate the complexities of ACHD and effectively manages patients who may also experience acquired heart conditions, including heart failure, arrhythmias, and pulmonary hypertension.
Dr. Nguyen graduated from Texas Tech University Health Sciences Center School of Medicine and completed his residency at University of Texas Medical School in San Antonio (Cardiovascular Diseases) and University of Texas Medical School at Houston (Internal Medicine). He is board certified by the American Board of Internal Medicine. Dr. Nguyen is fluent in English, Spanish, and Vietnamese, enabling him to serve a diverse patient population.
Dr. Nguyen is currently accepting new patients and his practice accepts major insurance plans, including Medicare, UnitedHealthcare, and many others. He is affiliated with Memorial Hermann Greater Heights Hospital, a Castle Connolly Top Hospital. To schedule an appointment or confirm insurance options, please contact Dr. Nguyen’s office at (713) 272-9022.
Education & Training
Medical Degree: Texas Tech University Health Sciences Center School of Medicine
Other Degree: University of Texas Medical School at Houston, Houston TX
Residency:
- University of Texas Medical School – San Antonio, Cardiovascular Diseases
- University of Texas Medical School at Houston, Internal Medicine
- Texas Tech University (Amarillo) Health Sciences Center Program
Dr. Nguyen’s comprehensive training at prestigious Texas medical institutions has equipped him with specialized expertise in adult congenital heart disease and cardiology.
Board Certifications
- American Board of Internal Medicine
Languages
- English
- Spanish
- Vietnamese
Medical Conditions Treated
Dr. Nguyen diagnoses and treats a wide range of cardiac conditions, including:
- Arrhythmia
- Atherosclerosis
- Atrial Fibrillation
- Carotid Stenosis
- Coronary Heart Disease
- Endocarditis
- Heart Attack
- Heart Disease
- Congenital Heart Disease
- Heart Failure
- Pulmonary Hypertension
- Valvular Heart Disease
- Cardiomyopathy
Please contact Dr. Nguyen’s office for more information or to schedule a consultation.
Medical Procedures Performed
Dr. Nguyen performs a variety of specialized cardiac procedures, including:
- Absent Pulmonary Valve Repair
- Anomalous Coronary Artery Angiography
- Anticoagulation Management
- Aortic Stenosis Repair
- Aortic Valve Repair / Replacement
- Aortopulmonary Window Repair
- Arterial Doppler
- Balloon Septostomy
- Cardiac Catheterization
- Echocardiography
- Stress Testing
- Heart Rhythm Management
For detailed information about specific procedures, please contact Dr. Nguyen’s office.
Insurances Accepted
Dr. Nguyen’s practice accepts the following major insurance providers:
- All Other Third Party
- Community Health Choice
- CVS Health (formerly Aetna)
- Express Scripts
- Health Care Service Corporation (HCSC)
- Integranet Health
- Medicare
- Memorial Hermann
- Other Health Care Provider
- UnitedHealthcare
For a complete list of accepted insurances, please contact Dr. Nguyen’s office.
Locations
Dr. Thieu Nguyen offers appointments at the following location:
Location: 7500 Beechnut St Ste 291 Houston, TX 77074 Phone: (713) 272-9022 [Get Directions]
Hospital Affiliations
Dr. Nguyen is affiliated with:
- Memorial Hermann Greater Heights Hospital, Houston, TX – Castle Connolly Top Hospital
This affiliation with a Castle Connolly Top Hospital demonstrates Dr. Nguyen’s commitment to providing the highest quality care. Castle Connolly Top Hospitals are recognized for excellence in specific medical procedures and overall patient care, representing the top 25% of hospitals nationwide.
Frequently Asked Questions
1. What is Dr. Thieu Nguyen’s specialty? Dr. Nguyen is an Adult Congenital Heart Disease Specialist and Cardiologist focusing on the care and management of adults with congenital heart disease. He has a thorough understanding of cardiac anatomy, physiology, surgical repairs, and long-term complications associated with congenital heart disease. He also manages acquired heart conditions including heart failure, arrhythmias, and pulmonary hypertension.
2. Is Dr. Thieu Nguyen accepting new patients? Yes, Dr. Thieu Nguyen is accepting new patients.
3. Does Dr. Thieu Nguyen offer online booking? Please contact Dr. Nguyen’s office at (713) 272-9022 for information about online booking and scheduling assistance.
4. Does Dr. Thieu Nguyen offer telehealth appointments? Please contact Dr. Nguyen’s office at (713) 272-9022 for information regarding telehealth appointment availability.
5. Which language(s) does Dr. Thieu Nguyen speak? Dr. Thieu Nguyen speaks English, Spanish, and Vietnamese.
6. Which board certifications does Dr. Thieu Nguyen have? Dr. Thieu Nguyen is certified by the American Board of Internal Medicine.
7. Is Dr. Thieu Nguyen affiliated with a Castle Connolly Top Hospital? Yes, Dr. Nguyen is affiliated with Memorial Hermann Greater Heights Hospital, which is a Castle Connolly Top Hospital recognized for excellence in medical procedures and patient care.

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