The reviews listed below were collected independently of The Heart House through rater8. Each review represents an authentic and verified patient experience.
Knowledgeable, personable & explained diagnosis and treatment in easy terms.
(1 week 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
(2 weeks ago)
May-2026
very good first impression
(3 weeks 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.
(1 month ago)
Apr-2026
Very knowledgeable and caring.
(1 month ago)
Apr-2026
Great first visit.
(2 months ago)
Mar-2026
Very caring and professional doctor.
(2 months ago)
Mar-2026
Very good nice and very understanding
(3 months ago)
Feb-2026
Excellent Doctor,
Very thorough with his explanations and answering any questions.
(3 months ago)
Jan-2026
John was very thorough, explained everything in language anyone could understand. Is down to earth and personable,
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.
Great first visit.
Very caring and professional doctor.
Very good nice and very understanding
Excellent Doctor, Very thorough with his explanations and answering any questions.
John was very thorough, explained everything in language anyone could understand. Is down to earth and personable,