Cardiovascular Services in Denison, Texas

Dependable Care for Your Heart and Vascular System

If you have a cardiovascular disease or disorder of the heart, Texoma Heart Institute (THI) at Texoma Medical Center (TMC) can help. We’ve been treating emergency and non-emergency heart conditions for more than three decades. Our heart program is here for you every step of the way — from interventional procedures and open-heart surgery to recovery and rehabilitation.

Board-certified physicians and specially trained technologists, nurses and support staff collaborate to assist patients and help them recover. This team approach at THI offers cardiac patients and their families the care they deserve.

Schedule an Appointment

Please complete our general appointment form or call our referral service at 903‑416‑3627​.

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Chest Pain Center

The Chest Pain Center at TMC offers rapid, round-the-clock, evidence-based treatment of heart attack and suspected heart attack.

The center is accredited by the American College of Cardiology (ACC). In addition to the standard accreditation, TMC has received an enhanced accreditation from ACC. This makes it a Chest Pain Center with Primary PCI. Hospitals awarded this designation have primary percutaneous coronary intervention (PCI) available 24 hours a day, 7 days a week.

Chest Pain Center & PCI Accreditations

Texoma Medical Center has been recognized by the American College of Cardiology in the 2022 US News & World Report 'Best Hospitals' for commitment to hospital care for heart patients.


We offer a wide range of services to diagnose, treat, and help you recover from cardiovascular conditions.

Cardiac Catheterization

Catheter-based interventional procedures are performed in THI's fully-digital catheterization laboratories. Cardiac catheterization uses radiological equipment to both diagnose and treat some forms of heart disease. Interventional cardiologists at THI specialize in transradial cardiac catheterization, in which they can access a patient's heart through a catheter in the wrist instead of the femoral artery in the thigh.

The heart specialists at THI perform thousands of interventional procedures every year, including about 1,600 cardiac catheterizations and more than 600 PTCAs (percutaneous transluminal coronary angioplasties) and other interventional procedures.

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Cardiac and Pulmonary Rehabilitation Program

This program is designed to help improve the health and quality of life for patients with heart or lung problems. The program emphasizes a personalized approach to recovery through exercise, education and encouragement.

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Cardiac CT for Calcium Scoring

Calcium scoring shows detailed images of your coronary arteries, which helps physicians identify and locate calcified plaque. Calcified plaque can build up and reduce the amount of oxygen rich blood flowing to the heart. It is often used to determine if a patient has coronary artery disease.

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Cardiovascular Surgery

Cardiovascular surgeons at THI perform innovative surgical procedures, including beating heart bypass, a type of open heart surgery where cardiac surgeons operate while a patient's heart continues to pump blood through the body.

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Extracorporeal Membrane Oxygenation

Extracorporeal membrane oxygenation (ECMO) is a form of partial cardiopulmonary bypass at the bedside that uses a pump and artificial lung to function as the heart and lungs during the healing process from various injuries.

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Transcatheter Aortic Valve Replacement

If you have severe aortic stenosis, restricted blood flow from narrowing of the aortic valve opening, Transcatheter Aortic Valve Replacement (TAVR) may be right for you. TAVR is a heart valve replacement procedure that offers new hope to patients who are not candidates for open-heart surgery.

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WATCHMAN™ Left Atrial Appendage Closure

Patients who take warfarin on a long-term basis have another option to help prevent blood clots and possible stroke. The WATCHMAN™ Left Atrial Appendage Closure (LAAC) Implant is designed to close off the left atrial appendage (LAA) and prevent harmful blood clots from entering the bloodstream when blood pools in the heart.

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Patient Story: Janis Fletcher

When Janis had a heart attack, the emergency staff at TMC immediately got her the care she needed.

Read Janis' Story

Get a Physician Referral

If you need a referral to a cardiac specialist or other physician at Texoma Medical Center, call our free physician referral service at 903-416-3627.