Testimonials & Reviews

Brendan Sullivan, MD, FACC

Board Certified in Internal Medicine, Board Certified in Cardiology & Board Certified in Nuclear Cardiology located in Clifton, NJ & Ridgewood, NJ

4.92/5 Star Rating

772 total reviews

Dr. Brendan Sullivan always appreciates feedback from his valued patients. To date, we’re thrilled to have collected 772 reviews with an average rating of 4.92 out of 5 stars. Please read what others are saying about Dr. Brendan Sullivan below, and as always, we would love to collect your feedback.

Michelle D.

5/5 Star Rating

Submitted 04/06/23

Dr. Sullivan has great bedside manners and spends time with you and answers all questions. Appointments always run on time.

Ralph D.

5/5 Star Rating

Submitted 04/05/23

Dr Sullivan is great and so is his staff

Rosa M.

5/5 Star Rating

Submitted 04/05/23

Amazing doctor and staff …as usual they are kind, courteous, and professional.

Matthew P.

5/5 Star Rating

Submitted 03/31/23

Always pleased.

Loretta S.

5/5 Star Rating

Submitted 03/31/23

Thank you Dr Sullivan for your outstanding health care. Your vast knowledge is impressive. Dr Sullivan and staff are very caring and helpful. You are all great. Highly recommend to family and friends

Gary M.

4/5 Star Rating

Submitted 03/30/23

Very good experience

Marcia V.

5/5 Star Rating

Submitted 03/28/23

Dr. Sullivan and his staff are “The Best”. I’ve been a patient of Dr. Sullivan for quite a few years and I’m extremely impressed with his medical knowledge and guidance. I feel blessed to have found a doctor who takes the time to listen and explain. I highly recommend making an appointment with Dr. Sullivan if you’re looking for an excellent cardiologist.

William W.

5/5 Star Rating

Submitted 03/27/23

Excellent description of the echocardiogram test I had.

Gerald G.

5/5 Star Rating

Submitted 03/27/23

Saw my friend this morning this man should have 100 stars not five great doctor great office both locations 5 stars is not enough

Brian M.

5/5 Star Rating

Submitted 03/24/23

As always visit was productive everyone great Dr Sullivan very helpful as usual

Derek O.

4/5 Star Rating

Submitted 03/22/23

Today I had a 30 minute wait to see Dr. Sullivan, which is a wee bit unusual. Other than that it was the typical excellent visit.

Brian C.

5/5 Star Rating

Submitted 03/22/23

Always helpful, and answers questions.

Yasmin D.

5/5 Star Rating

Submitted 03/21/23

Dr. Sullivan is the Best MD and Cardiologist! Explains everything and never ever felt rushed. The staff and Jessica is great! Highly recommend

Eileen T.

5/5 Star Rating

Submitted 03/10/23

Dr. Sullivan is an acute listener, thorough, patient & engages in real conversation with his patients. He and his Dad saved my husband’s life many years ago! It also should be mentioned that his team also exemplify the utmost courtesy and professionalism whether it be on the phone or in person!

Patrick M.

5/5 Star Rating

Submitted 03/09/23

Everyone is so friendly and engaging

Robert H.

5/5 Star Rating

Submitted 03/07/23

Dr Sullivan was very knowledgeable polite and provided me with all the information that I was looking for. highly recommend

Oscar A.

5/5 Star Rating

Submitted 03/07/23

Nice office and very helpful staff..

Beverly C.

5/5 Star Rating

Submitted 03/06/23

Dr Sullivan takes time to explain test results and answer any questions patient has. Staff is very nice, as well.

Gina D.

5/5 Star Rating

Submitted 03/06/23

Great doctor and great bedside manner.

Lisa L.

5/5 Star Rating

Submitted 03/06/23

Always take the time to answer all questions, professional but alway very pleasant.