Dr. John Costello, D.O., is a triple board-certified cardiologist in cardiovascular disease and internal medicine. Dr. Costello is board-certified in Electrophysiology. Dr. Costello joined The Heart House and Vascular Care in 2020. His focus is treating a multitude of heart rhythm disorders including atrial fibrillation, SVT, ventricular tachycardia and PVCs. His expertise includes minimally invasive catheter ablation for arrhythmia as well as device implantation for cardiac rhythm management and treatment of heart failure.
Dr. John Costello, D.O., is a triple board-certified cardiologist in cardiovascular disease and internal medicine. Dr. Costello is board-certified in Electrophysiology. Dr. Costello joined The Heart House and Vascular Care in 2020. His focus is treating a multitude of heart rhythm disorders including atrial fibrillation, SVT, ventricular tachycardia and PVCs. His expertise includes minimally invasive catheter ablation for arrhythmia as well as device implantation for cardiac rhythm management and treatment of heart failure.
The reviews listed below were collected independently of The Heart House through rater8. Each review represents an authentic and verified patient experience.
I was supposed to have a 10 week followup appointment from a surgical procedure. Instead had to wait 17 weeks only to find at the meeting I was seeing a physician's assistant who could not answer my questions. Should have been told before hand. I was not the only patient neither who expected to see the Dr only to be surprised.
(1 week ago)
Aug-2026
I thought Dr.Jet was thorough and explained everything great! Very nice Doctor !
(1 week ago)
Aug-2026
Very nice. I like explained everything clearly. Highly recommend
(1 month ago)
Jul-2026
Very nice doctor. I was a nervous reck when I was speaking to him
(1 month ago)
Jun-2026
Good visit, good doc, good guy!
(2 months ago)
Jun-2026
Knowledgeable, personable & explained diagnosis and treatment in easy terms.
(3 months ago)
May-2026
Costello gets a thousand stars he goes above and beyond the care of his patients he is fantastic surgery with him with no complications especially when I have my management implant done and I have no more afib he is the best in the whole world
(3 months ago)
May-2026
very good first impression
(3 months ago)
Apr-2026
Dr Costello is always calm and reassuring. He makes me feel like I am the only patient he has on his schedule. He takes his time to explain whatever he’s discovered in an exam or procedure and then gentle guides you through your options. Wonderful, compassionate care.
243 Hurffville-Cross Keys Rd Suite 101 Sewell, NJ 08080
Dr. John Costello, D.O., is a triple board-certified cardiologist in cardiovascular disease and internal medicine. Dr. Costello is board-certified in Electrophysiology. Dr. Costello joined The Heart House and Vascular Care in 2020. His focus is treating a multitude of heart rhythm disorders including atrial fibrillation, SVT, ventricular tachycardia and PVCs. His expertise includes minimally invasive catheter ablation for arrhythmia as well as device implantation for cardiac rhythm management and treatment of heart failure.
Undergraduate Degree: Penn State University Medical School: Philadelphia College of Osteopathic Medicine Residency: Philadelphia College of Osteopathic Medicine, Internal Medicine Residency Fellowship: Cardiovascular Diseases – Deborah Heart and Lung Center Fellowship: Clinical Cardiac Electrophysiology – Georgetown/Washington Hospital Center
Professional Affiliations: Fellow, American College of Cardiology Member, American College of Cardiology Member, Heart Rhythm Society
Honors and Awards Chief Internal Medicine Resident 2013-2015 Best of Case Reports, Heart Rhythm Society 2019 Licensed to practice in both New Jersey and Pennsylvania and retains privileges at several Southern New Jersey hospitals.
I was supposed to have a 10 week followup appointment from a surgical procedure. Instead had to wait 17 weeks only to find at the meeting I was seeing a physician's assistant who could not answer my questions. Should have been told before hand. I was not the only patient neither who expected to see the Dr only to be surprised.
I thought Dr.Jet was thorough and explained everything great! Very nice Doctor !
Very nice. I like explained everything clearly. Highly recommend
Very nice doctor. I was a nervous reck when I was speaking to him
Good visit, good doc, good guy!
Knowledgeable, personable & explained diagnosis and treatment in easy terms.
Costello gets a thousand stars he goes above and beyond the care of his patients he is fantastic surgery with him with no complications especially when I have my management implant done and I have no more afib he is the best in the whole world
very good first impression
Dr Costello is always calm and reassuring. He makes me feel like I am the only patient he has on his schedule. He takes his time to explain whatever he’s discovered in an exam or procedure and then gentle guides you through your options. Wonderful, compassionate care.
Very knowledgeable and caring.