Ioannis Mastoris, MD, MPH

The doctor was excellent. He was very thorough. He listened to everything I had to say. He looked at the report in front of me and was able to explain to me what was going on as I showed him EKG strips for my phone. He took it in and he was very willing to listen to everything I had to say. The nursing staff was great. Lori in the head office was incredible. It was very impressive of how well they worked and how good of treatment they were able to provide me.

Everything was very good, had long conversations with provider who was very informed.

This was my first time seeing this provider. He was amazing! I have a very complex condition. It was refreshing to have a provider who actually listened. He gave me plenty of time. He explained everything clearly and I left feeling very well taken care of.

Another very productive visit.

Very professional and very well informed about my health needs

Comfortable, competent and professional experience

The doctor was knowledgeable and kind. Although my father is [redacted] years old and in poor health, the doctor did not treat him as if he is too old or too sick to help. The doctor had a detailed plan ready to discuss to try to improve my father's health. He spent a good amount of time with us, explained things well and offered to answer any questions.

Dr. Mastoris spent a great deal of time with me to answer all of my questions and to discuss concerns. Hw also stated that he was going to speak with the SCAD unit because he really felt I needed to be able to do some exercises and he was knowledgeable enough that he felt the "old" information wasn't accurate. The next day he had an answer for me in my portal and when I asked one more question he got back to me that day.

I feel blessed to have Dr Mastoris as my new cardio md and hope to have many more healthy years ahead of me

Everything was great ?

It is always a pleasure to meet with him!!!!!

Dr. Mastoris gave me the time to discuss my medical issues. He is very knowledgeable and very helpful.

This was my first visit with this Dr. He was easy to talk with, he listened to me and heard my concerns. I felt that he actually cared.

Dr Mastoris is very thorough, he explains my condition in a way that is easy to understand. He describes the direction my treatment is going and what next steps look like.

I have been going to MGH for my heart for 34 years. This last appointment was one of the best in terms of efficiency. Everyone I dealt with (over ten people) was courteous, positive, knowledgeable and even fun! I am so glad to live within an hour (2 1/2 during traffic:) of MGH. Thank You to the entire team! [redacted]

My Doctors are always willing to help if I reach out. I have the most respect and 100% confidence in the ability to take care of me.

My husband and I were so happy to finally meet with a doctor that truly cares and takes the time to listen to our concerns.

Dr. Mastoris is very professional, very good knowledge about heart problems and does an excellent job.

I love Doctors Mastoris . He is fantastic and explains everything so good

Dr. Mastoris was great.

Excellent visit, covered all the important details, was very knowledgeable and showed empathy.

The medical staff has been nothing but amazing. They listen to me and don't dismiss my concerns.

They are very good

Good appointment

I couldn't be more satisfied with each and every appointment that I have had at MGB We are blessed to have the quality of care . Thank you, [redacted]

I met Dr. Mastoris when I was hospitalized for heart failure. I am very impressed with him and happy that he is my physician now. He is thorough, listened to his patients, compassionate and spends time. He is an expert and I am very fortunate to have him. He has an immediate plan to help me and is expediting my treatment. [redacted]

Dr. Matsoris is a treasure: personable, interested in more than raw medical Information; interested in treating the patient and not just the issue at hand.

Dr Mastoris took his time and listened, explained and showed interest in my situation All great

The Dr. I had seen was very interested in my thoughts and concerns

I had a very good experience with the doctor and he did not rush my appointment

My mom and I were very pleased with the Doctor and his willingness to not rush us but answer questions. He also explained things very clearly so my mom and I could understand. It was a very good experience.

Dr Mastoris was extremely knowledgeable about me and my history. I feel extremely grateful to have him for my doctor. He is very thorough and takes his time to explain everything to me. [redacted]

Dr. Mastoris was very thoughtful, informative, and warm-hearted. I felt very comfortable and cared for and well informed about the whole situation. Thank you very much.

they are great

Dr.mastoris very helpful in me understanding my heart problems and what has to be done and what to expect. Dr. Was very clear and easy to understand what I had to do. My experience at mass general was excellent.

Always very professional and I appreciate their care.

Very well informed. Remembered all previous meetings and all significant conditions.

Ioannis Mastoris is the best. He communicates well and makes me feel comfortable.

I had to eat humble pie and I had to swallow the big pill and I listened to everything that was said and I'm looking forward to the future. These next three months are going to be very important to me and the doctor.

Dr. Mastoris provided excellent care. He is extremely professional and knowledgeable. I feel fortunate to have him as my Cardiologist.

I had a very good visit. He was attentive. His physical was on time, and he was friendly and attentive and interested in what I had to say and answered my questions. The total experience was very pleasant. I was pleasantly surprised. I hadn't seen him for a long time, and I didn't really remember him, basically. but I felt very good living there.

He's absolutely wonderful,respectful and empathetic.

Dr. IOANNIS MASTORIS was very professional and gave very important information concerning health and exercise and i'm following doctors orders. Looking forward to any additional guidance and support.

Dr mastoris was very attentive spent a lot of time with me very professional and knowledgeable.

More follow up to come. working on new medication.

Perfect

It was perfect as always.

Excellent, very concerned about my and my families concerns and roles. Helpful about my (and my wifesconcerns, activities and treatment followups. Excellent care.

Very good

Excellent attention to my questions!!

Very professional and courteous

Yeah, Dr. Mastoris is pretty much the best doctor I've ever had. He's definitely a 10 on the scale, so I would recommend him for anybody. He's a nice person, funny. We joke around and makes things a lot easier and more comfortable.

Good experience overall!

Very professional they know what they're doing.

Had a very good experience.

Dr. Mastoris is the absolute best!! He talks to you as another person. He listens and explains all the questions we have so that we are able to understand the reasons for various procedures and why the differences in the various medications may be used in different circumstances. He is truly a jewel and aids significantly in contributing to Mass General's stellar reputation!!

Dr. Mastoris is absolutely WONDERFUL!