Dr. Andrea R. Nicholson

Dr. Sarik was attracted to electrophysiology due to the mix of basic science, engineering and medicine. He enjoys working with pacemakers, defibrillators and implantable devices as well as troubleshooting therapy processes.Dr. Sarik likes getting to know the whole patient – their occupation, hobbies, interests, family members and more. He has a strong desire to know their whole story. Dr. Sarik is dedicated to giving each patient a safer, more comfortable life. Dr. Sarik is highly rated in 33 conditions, according to our data. His clinical expertise encompasses Atrioventricular Nodal Reentrant Tachycardia (AVNRT), Paroxysmal Supraventricular Tachycardia (PSVT), His Bundle Tachycardia, Pacemaker Implantation, and Cardiac Ablation. Dr. Sarik is currently accepting new patients.

Denisa Hagau, MD, specializes in cardiology at MercyOne North Iowa Heart Center. Her clinical interests include preventive cardiology, treatment of coronary artery disease, congestive heart failure, atrial fibrillation and valvular heart disease. She also has a special clinical interest in the management of heart disease in women and echocardiography. Dr. Hagau is highly rated in 30 conditions, according to our data. Her clinical expertise encompasses Heart Failure with Preserved Ejection Fraction (HFpEF), Pulmonary Edema, Heart Failure, Pacemaker Implantation, and Cardiac Ablation. Dr. Hagau is board certified in American Board Of Internal Medicine. Dr. Hagau is currently accepting new patients.

Both of Dr. Congello's parents were physicians. They taught him that caring for patients is a privilege. Along with that privilege comes a responsibility to provide the best, most attentive and compassionate patient care. Patients put their lives in their providers hands. As a physician, Dr. Congello feels that the patient is his employer.He loves working in this field and helping people overcome heart problems and cardiovascular disease. Dr. Congello likes to get to know his patients personally and be available whenever they need him. He believes in treating patients and their family members the way he would want to be treated – with caring, kindness, compassion and respect. Dr. Congello believes that every person who seeks his help deserves the best that cardiovascular medicine has to offer and the best that he personally has to offer. Patients deserve the best possible care and results. Dr. Congello is highly rated in 32 conditions, according to our data. His clinical expertise encompasses Angina, Coronary Heart Disease, Heart Attack, Angioplasty, and Pacemaker Implantation. Dr. Congello is board certified in Cardiology, American Board Of Internal Medicine (Interventional Cardiology). Dr. Congello is currently accepting new patients.