CardioVascular Institute of South Texas

Cardiologists located in Helotes, TX

Dear Patients of Mehdi Rambod, MD,

Dr. Rambod will be out of the country on sabbatical through the end of this year. Any patients that require immediate attention will be seen by Cardiovascular Institute of South Texas during his absence.

Please reach out to our office at 210-920-8000 if you have any questions.


Imam Tjahja, MD
Cardiovascular Institute of South Texas 


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About The Practice

The CardioVascular Institute of South Texas in Helotes, Texas, is a comprehensive practice specializing in heart, vascular, and venous care for patients in the San Antonio area. With over 30 years of clinical experience, the institute is led by Imam Tjahja, MD, FACC. He is a board-certified physicians with a rich background in cardiology and internal medicine.

Given that the American Heart Association’s findings say nearly half of all American adults suffer from some form of cardiovascular disease during their lifetime, Dr. Tjahja, and his dedicated staff are devoted to helping local patients with everything from preventive medicine in the form of education and prescribed lifestyle changes to treating critical care cases stemming from a cardiovascular disease.

Most importantly, the team at the CardioVascular Institute of South Texas understands that no two patients are alike and therefore take a highly individualized approach, coupled with the latest technologies and research. Whether a patient comes in for a routine electrocardiography or something as critical as heart surgery, the team knows how monumental of a task it is to care for that patient and provide support for them and their loved ones.

Learn more about the available services by calling the CardioVascular Institute of South Texas or requesting a consultation online today.


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Hablamos Español


Cardiology Clinic

-Coronary Artery Disease

-Congestive Heart Failure

-Atrial Fibrillation

-Pulmonary Hypertension

-Atrial Septal Defect / Patent Foramen Ovale Closure


Vein Disease

-Varicose Veins / Venous Insufficiency (radiofrequency ablation / foam sclerotherapy treatments)

-Deep venous thrombosis / Pulmonary embolism (Angioget thrombectomy / EKOS thrombolysis)

-Central iliac venous compression / stenting (May Thurner)

Peripheral Artery Disease

-Critical Limb Ischemia / Amputation Prevention


-Cardiac Stress Testing

-Echocardiogram / TEE -Holter Monitor / Loop Recorder

-Vascular / Venous Ultrasound

-Cardiac / Coronary CTA

-Home Sleep Study


    Providing Clinical Expertise and Excellence in Heart, Vascular, and Venous Care

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Insurances Accepted

We accept most major health insurances. Please call us to verify your specific insurance plan, or any coverage-related questions.

Blue Cross Blue Shield
Medicare Advantage
Medicare Advantage
Multiplan PHCS
United Healthcare


CardioVascular Institute of South Texas
12340 Bandera Rd, ste 104
Helotes, TX 78023
Phone: 210-920-8000
Fax: 210-920-6000

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