About Dr. Mark O'Connor Jr, MD

Dr O'Connor aspires to provide the highest quality of cardiovascular care to his patients by combining the science of evidence-based medicine and cutting edge technology with the art of listening and empathy. "I think a great doctor must not only be knowledgeable and thorough, but also compassionate and approachable. I try to put myself in my patient's shoes at every visit." His interests and expertise span all areas of general cardiology, with a particular focus on preventive medicine, and a broad background in cardiovascular imaging (echocardiography, TEE, nuclear cardiology, and cardiac CT).

Medical Disclaimer: The information on this website is for general informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

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Patient Reviews

Patient

★★★★★

Dr Oconnor has always been kind, compassionate and very thorough. He explains everything in detail. I am heartbroken to hear he is leaving his office in Sterling. I don't know where I'll go. He is an excellent cardiologist!!

Patient

★★★★★

Dr O'Connor is excellent and the staff at the practice are wonderful as well. Special thanks to the lady that did my EKG, I believe her name was JJ, for being incredibly professional and kind.

Patient

★★★★★

This was the best medical experience I've ever had. From Stephen the receptionist who was so welcoming to the sweet Rosanuney, the nurse who took my entry information, took my vitals and did my EKG to Dr O'Connor. Everyone was so kind and welcoming. I was made comfortable through their calming attitudes and expressions. Dr. O'Connor in particular was not just truly professional but was obviously caring and compassionate. Upon exiting, Leanne at the front desk was so professional and so kind in her ways in helping me schedule my tests and next appointment that it felt so good to meet her. I was also greeted by Julie who added some kind humor to the visit. Thank you to all for making what was anticipated to be a stressful visit to the doctors office a comfortable experience. I'm Tom Davis and my visit was at 2:15 on Nov. 21, 2024

Patient

★★★★★

Dr. O'Connor provides exceptional cardiology care. He listens to concerns, is caring/compassionate, discusses and provides options for care. His clinical and administrative teams are outstanding!! I am grateful and thankful that I am a patient in their practice.

Patient

★★★★★

From the moment that I walked through the door, the entire Staff was incredible. Reception was great, Intake was fantastic and Dr. O'Connor was amazing. He took the time to listen to me and is willing to investigate the issues to get to the root of the problem. I am so happy that we were referred to this Practice!!

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