In-House Services

Cardiac Imaging and Testing

Our Echocardiography program, which is ICAEL Accredited, offers:


Our Nuclear Medicine program, which is ICANL Accredited, offers:

Nuclear MRI

Nuclear PET

Pharmacologic Myocardial Perfusion Imaging

Nuclear Stress Testing

Treadmill Stress Testing

Our Vascular program, which is ICAVL Accredited, offers:

Peripheral Vascular Studies (PVR)

Abdominal Aorta Ultrasounds

Bilateral Iliac Ultrasounds

Cerebrovascular Evaluations

Arterial Evaluations

General Cardiology

Our physicians are board-certified by the American Board of Internal Medicine in Cardiovascular Disease. All of our physicians are well qualified to diagnose heart conditions based on symptoms, physical examination findings, as well as the results of diagnostic studies and tests.

Additionally, our physicians are also trained to provide a number of different therapies to manage heart disease, ranging from diet and lifestyle recommendations to medication therapy to sophisticated catheter-based interventions.

We work with a patient’s primary care physician to diagnose any heart condition and recommend a treatment regimen. In some situations, minimally invasive therapies such as pacemaker placement, defibrillator placement, or catheter-based balloon and stenting of blood vessels may be necessary.

General Cardiology Management:

  • Arrhythmias
  • Congestive Heart Failure
  • Coronary Artery Disease and Angina
  • Heart Attack
  • High Blood Pressure
  • High Cholesterol and other Lipid Disorders

Heart Rhythm/Electrophysiology

The heart is a beautifully designed pump that relies on its own electrical system to beat and circulate blood throughout the body. Sometimes there is a problem with the heart’s electrical system – or electrophysiology – resulting in a heart rhythm disorder whereby the heart beats too fast, too slow, or irregularly, which can lead to a number of complications, including stroke and even sudden death.

Harvey R. Chen, M.D., a clinical cardiac electrophysiologist, at Waco Cardiology Associates, has specialized training in diagnosing and treating heart rhythm disorders and irregular heartbeats (arrhythmias). Dr. Chen uses a number of advanced technologies and techniques for diagnosis and management. Dr. Chen is board certified by the American Board of Internal Medicine in Clinical Cardiac Electrophysiology.

Heart Rhythm Management

Evaluation and treatment of atrial fibrillation, ventricular tachycardia and other arrhythmias

Evaluation and treatment of syncope

Management of antiarrhythmic medications

Electrophysiology studies


Holter monitors, event monitors, and implantable loop recorders

Implantation and management of pacemakers

Implantation and management of implanted cardioverter defibrillators (ICDs)

Cardiac resynchronization therapy and bi-ventricular devices

Intracardiac echocardiograms


Radiofrequency ablation is where one or more flexible, thin tubes (catheters) are guided via x-ray through the blood vessels to abnormal heart muscle tissue. Once there, a burst of radiofrequency energy destroys very small areas of the tissue, which give rise to abnormal electrical signals causing rhythm disturbances.

Holter and Event Monitoring

The 24-hour Holter monitor is an electrocardiographic recording device that utilizes electrodes, which the patient wears for a 24-hour period, including during sleep and exercise. The Holter monitor captures the patient’s entire heart rhythm over a 24-hour period so that it can be analyzed.

An event monitor is a similar wearable device that the patient takes home for a period of time. Except rather than continuously recording, the patient manually starts on stops the recording when he or she suddenly begins to experience symptoms of palpitations or heart racing. The recording of the cardiac event can be transmitted remotely for analysis.

Pacemaker Implantation

Pacemakers are miniature devices that can be implanted underneath the skin to monitor and provide control of a patient’s the heart rhythm. Pacemakers are particularly helpful in patients who suffer from heart rhythms which are abnormally slow. Typically, the pacemaker is placed under the skin of the front wall of the heart below the collarbone. Monitoring of the pacemaker is usually done remotely at home with periodic visits to the cardiologist’s office.

ICD Implantation

Implanted cardioverter defibrillators (ICDs) are 99 percent effective in stopping life-threatening arrhythmias and are the most successful therapy to treat ventricular fibrillation, a major cause of sudden cardiac death. An ICD is implanted under the skin near the heart and constantly monitors a patient’s heart rhythm. If it detects a very fast, abnormal heart rhythm, it delivers energy to the heart muscle causing it to beat in a normal rhythm.

Interventional Cardiology

Blockages that build-up in the arteries can lead to serious heart problems, including a heart attack. Waco Cardiology Associates offers interventional cardiology services to open blocked arteries using minimally invasive methods known as percutaneous coronary interventions (PCI).

Our interventional cardiologists can use PCI on an emergency basis – when a patient is experiencing a heart attack to open a blocked artery and restore blood flow to the heart – or during a scheduled procedure to open blocked arteries before they cause a heart attack.

During PCI, long thin tubes are threaded through the patient’s body and into the coronary arteries using advanced imaging. Through these tubes, a smaller tube carrying a balloon is guided into the coronary arteries, and once at a blockage, the balloon is inflated pressing the obstructing plaque against the walls of the coronary artery.

To keep the artery open, an expandable device called a stent is threaded through the catheter and deployed at the site of the blockage.

Visit the Waco Cardiology Cath Lab

Peripheral Vascular Disease Treatment

The arteries of the heart are not the only ones that can become blocked. Any major artery in the body can experience a blockage for any number of reasons. Outside the coronary arteries, the arteries that most frequently experience blockages are to the legs and lower extremities.

Our cardiologists are skilled in the diagnosis and treatment of peripheral vascular disease. Using percutaneous interventions similar to interventional cardiology, our team can open blood vessels in other parts of the body.

Vein Program

At Waco Cardiology Associates, our top priority is to keep you healthy. Our experienced and dedicated team of experts treats all aspects of cardiovascular disease including venous disease, peripheral vascular disease and cardiovascular disease. No other medical practice in Waco possesses the experience and cutting-edge technology to properly diagnose and care for patients with vascular health concerns.

Do you experience any of the following signs and symptoms in your legs and ankles?

  • Leg pain, aching or cramping
  • Burning or itching of the skin
  • “Heavy” feeling in legs
  • Leg or ankle swelling, especially at the end of the day
  • Visible varicose or spider veins
  • Skin discoloration or texture changes, such as above the inner ankle
  • Open wounds or sores, such as above the inner ankle
  • Restless Leg Syndrome

Venous disease generally originates in your legs in the form of varicose veins or leg cramping and leg swelling. Many people attribute the cause of varicose veins to heredity or to their line of work. Both can be right. Sometimes venous disease can be familial while, oftentimes, people who stand up all day—doctors, restaurant workers, teachers and barbers—develop varicose veins over the course of their lives. At WCA, we understand that these concerns are more than merely cosmetic.

Patient Risk Factors

  • Has anyone in your blood-related family had varicose veins or been diagnosed with chronic venous insufficiency or venous reflux?
  • Have you had any treatments or procedures for vein problems?
  • Do you stand for long periods of time, such as at work?
  • Do you frequently engage in heavy lifting?
  • Have you ever been pregnant?

Why trust a cardiologist with your legs?

One good reason: You could be at risk for superficial venous reflux disease or peripheral vascular disease. What does that mean? If left untreated, both conditions only worsen. Many patients with symptoms in their legs may not even realize they’re at risk for a more serious problem—underlying heart disease when blood flows in the wrong direction, or reflux, or from blood pooling inside the legs. At WCA’s Vein Clinic, we can help.

Charles A. Shoultz, Jr., M.D., F.A.C.C.   •   Charles A. Shoultz, III, M.D., F.A.C.C.   •   Rodney A. Brown, M.D., F.A.C.C.
William R. Pitts, M.D., F.A.C.C.   •   Donald S. (Buck) Cross, M.D., F.A.C.C. • Andrew K. Day, M.D., F.A.C.C.
Sherwin F. Attai, M.D., F.A.C.C.   •   Shawn J. Skeen, M.D. F.A.C.C.   •   Harvey R. Chen, M.D. F.A.C.C.
Adam M. Falcone, M.D., F.A.C.C.   •   Brian C. Barnett, M.D., F.A.C.C.

Diplomates, American Board of Internal Medicine,
Cardiovascular Disease, Interventional Cardiology, Clinical Cardiac Electrophysiology