Ioannis Mastoris, MD, MPH

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!

Dr. Mastoris is an amazing doctor. he listened to me and explained everything is a way totally alleviated a lot of my stress and anxiety. We came up with a treatment plan and I trust his judgement 100%. He is also a genuinely nice and pleasant man.

I don't know how he could be better...

Thank you and I was extremely impressed with Dr. Matoris. I am grateful to Dr. [redacted] for the introduction. Many thanks [redacted]

Dr. Mastoris was easy to talk to, kind, knowledgeable. It was an initial visit and I hope to have many more successful visits.

Dr. Mastoris is very thorough. He's encouraging. He explains everything in detail, asks questions, and is very, very interested in every portion of a person's care. He is an excellent provider.

Very patient centric. Great personality.

Dr. Mastoris is the kindest most compassionate Dr. I have ever had. He cares not only about my medical issues but how they affect my everyday life. He offers up suggestions and solutions to help me navigate my illnesses while explaining each aspect of my illnesses. He is genuinely concerned with my overall well being and I feel that he really is fighting to get me the best care that I need.