{"distribution":{"1":{"rating_count":2,"rating_percentage":0.67,"review_count":0},"2":{"rating_count":0,"rating_percentage":0,"review_count":0},"3":{"rating_count":1,"rating_percentage":0.34,"review_count":0},"4":{"rating_count":4,"rating_percentage":1.35,"review_count":2},"5":{"rating_count":290,"rating_percentage":97.64,"review_count":144}},"average_rating":"4.916498","rating_count":"297","source_url":null,"reviews":[{"body":"Thank you!","review_date":"2026-08-02"},{"body":"She was excellent.","review_date":"2026-08-02"},{"body":"As a patient at Mass General Cardiology I have received and continue to receive outstanding care. The Doctors an supporting staff are most competent and professional. I feel very comfortable knowing I am in good hands.","review_date":"2026-08-08"},{"body":"Sarah Tsiaras was excellent","review_date":"2026-08-01"},{"body":"She is the epitome of a model doctor. Knowledgeable, kind, prepared, able to explain things well, and very compassionate.","review_date":"2026-07-30"},{"body":"Dr. Tsiaras is great !","review_date":"2026-07-25"},{"body":"Dr Tsiaras is the BEST. Very proficient and motivated to do what is best for ME!","review_date":"2026-07-26"},{"body":"I feel confident that I have outstanding care with my provider.","review_date":"2026-07-26"},{"body":"Dr Tsiaras is an excellent cardiologist. My husband and I are fortunate to be under her care. She listens intently and genuinely cares about us. Mass General is fortunate to have a physician of her caliber representing them.","review_date":"2026-07-26"},{"body":"Dr. Tsiaras is amazing. She's knowledgeable and cares about her patients. I am so grateful to have my care team at MGH!","review_date":"2026-07-20"},{"body":"The doctor was extremely personable, treated me with respect and was obviously interested to hear my perspective. We discussed different options and she was very open to considering different approaches before we agreed on the final plan.","review_date":"2026-07-20"},{"body":"This provider is the best.","review_date":"2026-07-19"},{"body":"Fabulous [redacted] - wouldn't go to anyone else","review_date":"2026-07-18"},{"body":"Grate","review_date":"2026-07-18"},{"body":"She was very knowledgeable, very courteous, and inspired a lot of trust in me. And she spent a lot of time and explained things to me that were very helpful with my situation. And I am looking forward to a future appointment with her as she continues to provide cardiology care for me in the future.","review_date":"2026-07-08"},{"body":"Dr Tsiaris is an excellent physician [redacted]","review_date":"2026-07-04"},{"body":"Good","review_date":"2026-07-04"},{"body":"Excellent doctor","review_date":"2026-07-03"},{"body":"Dr. Tsiaris was great. She spent a lot of time with me reviewing my medical history and was patient and thorough in discussing same.","review_date":"2026-06-24"},{"body":"I was very impressed that both the cardiologist fellow and the attending cardiologist had reviewed all of my prior cardiac history and were prepared to discuss my case in detail. I was amazed at how relaxed the appt was and the fact that it was so thorough.","review_date":"2026-06-21"},{"body":"Dr. Sarah Tsiaras is exceptional and is very concerned about some of my issues and is going to communicate with the stroke neurologist at Beth Israel where I was flown into so they can coordinate and make the best recommendations for my ongoing care. I can't say enough about Dr. Sarah Tsiaras. She's exceptional. Thank you.","review_date":"2026-06-22"},{"body":"Very good","review_date":"2026-06-20"},{"body":"Dr. Tsiaras is an excellent physician and I highly recommend her. Thanks.","review_date":"2026-06-19"},{"body":"She explains issues at the appropriate level","review_date":"2026-06-17"},{"body":"Dr. Tsiaras is second to none. I've been seeing her for a number of years. She's always very accommodating, always follows up, and is very, very, very knowledgeable about me and my particular needs.","review_date":"2026-06-17"},{"body":"I am extremely grateful to have Dr Tsiaras as my cardiologist!","review_date":"2026-06-10"},{"body":"Dr. Tsiaras always provides the best feedback that I could hope for. I always learn a lot in my follow-up appointments and I feel comfortable discussing my health issues with her and I consider her a valuable asset of my care team.","review_date":"2026-06-10"},{"body":"that was my first time visit her. My impreession is good.","review_date":"2026-06-08"},{"body":"Excellent listener and communicator.","review_date":"2026-06-03"},{"body":"Dr. Tsiaras is an excellent doctor. She's very informative. She knows my history very well. I've been a patient of hers for many, many years. I really respect her.","review_date":"2026-06-03"},{"body":"She's a terrific doctor, did everything I was looking for. She's great.","review_date":"2026-06-03"},{"body":"I greatly appreciate the care I get from Dr Sarah Tsiaras.","review_date":"2026-05-27"},{"body":"Dr Tsiaras was professional, thorough, listened to my concerns and explained everything to me. Thank you for seeing me.","review_date":"2026-05-26"},{"body":"Provider was one of the best I have ever encountered. Truly professional in every way. A credit to MGB.","review_date":"2026-05-24"},{"body":"Excellent","review_date":"2026-05-25"},{"body":"Everyone was kind and professional.","review_date":"2026-05-24"},{"body":"Dr Tsiaras has been my cardiologist for over 13 years and has always given me excellent care and advice.","review_date":"2026-05-20"},{"body":"appointment was on time and I left with all my questions answered and knowing how to go forward with my recovery.","review_date":"2026-05-17"},{"body":"I continue to be impressed by my care with Dr. Tsiaras . She took the time to understand completely the incident I experienced. I know I'm in good hands.","review_date":"2026-05-15"},{"body":"Dr Tsairis is an excellent physician - thorough, knowledgeable, and she has excellent communication skills.","review_date":"2026-05-13"},{"body":"Excellent","review_date":"2026-05-09"},{"body":"She is an excellent physician who really listens to you. I would highly recommend her!","review_date":"2026-05-07"},{"body":"Dr. Tsiaras is amazing; she always listens with care and is willing to work with me. I am so grateful to have her on my health journey. I would definitely recommend her to anyone needing a cardiologist.","review_date":"2026-05-07"},{"body":"I'm very grateful to have Dr. Tsiaras as my cardiologist. She's very thorough, spends the time I need, and answers questions before I even know what ones to ask. I feel truly blessed and humbled with her service, and I believe I'm as healthy as I can be because of her. Thank you.","review_date":"2026-05-06"},{"body":"She was great, answered all my questions. Explained what a SCAD heart attack was and had a good game plan with a follow up test. I left feeling like I had a good understanding of my condition and expectations. I had a lot of confidence in her expertise.","review_date":"2026-05-04"},{"body":"If I should encounter any unexpected medical episode, this provider is the one I would seek assistance first.","review_date":"2026-05-04"},{"body":"1.5 hours for blood work?","review_date":"2026-05-02"},{"body":"Dr Tsiaras is the best!","review_date":"2026-05-02"},{"body":"Professional and caring.","review_date":"2026-04-20"},{"body":"Nurse or assistant who collected vitals prior to OV was lovely and warm Provider was generous with time and patience","review_date":"2026-04-19"},{"body":"She listens to me and gss as ve Mr some good advice on my medication. She has a very pleasant bedside manner.","review_date":"2026-04-18"},{"body":"Dr. Tsiaras was very knowledgeable about what I had gone through in the hospital and was also very willing to talk to me about any of my questions and answer them and listen to what I had to say. And she's also very nice and very kind.","review_date":"2026-04-20"},{"body":"Doc Tsiaras takes the time to listen and thinks through her input. She is caring, extremely knowledgeable, and great at explaining what and why the plan is the plan. She is certainly one of the best doctors at MGB in my opinion,","review_date":"2026-04-15"},{"body":"Very good informative, reassuring experience","review_date":"2026-04-15"},{"body":"Everything was perfect","review_date":"2026-04-05"},{"body":"Dr Tsiaras is excellent, love having her as my cardiologist.","review_date":"2026-03-31"},{"body":"This is an excellent doctor. I was worried when my precious one moved on but the replacement has been just as good!","review_date":"2026-03-30"},{"body":"Valerie was excellent. Breathing exercises before bp really helped calm down.","review_date":"2026-03-29"},{"body":"She knows my health issues, listens carefully and offers good advice.","review_date":"2026-03-29"},{"body":"I am glad I have her as my cardiologist. I take a lot of medications and feel comfortable doing so for the time being because I have confidence that the doctor is working for my success.","review_date":"2026-04-01"},{"body":"Dr Tsiaris was attentive and heard my concerns. Treated me with respect and concern.","review_date":"2026-03-29"},{"body":"Dr provided me with a professional attitude very helpful to all questions I asked never had a problem with the office","review_date":"2026-03-28"},{"body":"very good","review_date":"2026-03-28"},{"body":"Dr. Tsiaras is an excellent cardiologist ! She is patient, listens to allI have to say and responds clearly .","review_date":"2026-03-28"},{"body":"Dr. Tsiaras is a terrific doctor. Smart, attentive, and she always makes me feel like I am in the best possible hands!","review_date":"2026-03-28"},{"body":"Fortunate to have such a well qualified and compassionate doctor","review_date":"2026-03-26"},{"body":"She was quite personable and easy to talk to in this my first encounter with her. At the same time, I question the system that has a cardiologist doing the initial evaluation by remote. As a retired physician myself, I question the wisdom of this practice.","review_date":"2026-03-25"},{"body":"I just want to say that Dr. Tsiaras is one of the most compassionate human beings I've ever met and so appreciative that I'm under her care for my SVT and I look forward to seeing each and every visit. I'm extremely thankful for her professionalism and always goes above and beyond on every level professional and human there is. Thank you very much.","review_date":"2026-03-25"},{"body":"Dr. Sarah Tsiaras is one of the best physicians I have ever worked with! She is extremely knowledgeable, helpful, courteous and friendly! I would highly recommend her to anyone needing a cardiologist referral.","review_date":"2026-03-23"},{"body":"Dr. Tsiaras is a pro who inspires confidence.","review_date":"2026-03-22"},{"body":"Awesome!","review_date":"2026-03-21"},{"body":"I have full confidence in Dr Tsiaris. She is very thoughtful about my situation and co morbidities and takes my whole health into consideration. I always feel well-cared for by Dr Tsiaris and appreciate being able to see her for my cardiovascular issues.","review_date":"2026-03-21"},{"body":"Dr Sarah V Tsiaras is excellent. I am fortunate to have her as my doctor.","review_date":"2026-03-15"},{"body":"Dr and staff always pleasant helpful and professional","review_date":"2026-03-13"},{"body":"I saw a Nursing Assistant for EKG and Vitals","review_date":"2026-03-13"},{"body":"Excellent experience see Dr Tsiaris","review_date":"2026-03-12"},{"body":"I love all my mass general doctors and their staff. They do a great job.","review_date":"2026-03-11"},{"body":"I felt heard and I felt that they Dr was on my side to help problem solve. I left feeling reassured","review_date":"2026-03-10"},{"body":"She was caring and thoughtful","review_date":"2026-03-01"},{"body":"She was personable, and easy to talk to. She explained my test results in a way that I could understand; providing reasonable options for how to manage my physical activities given my condition. She invited my questions and answered them to the best of her ability and the time frame we had to work with. I still would like to better understand all the 9 panels of data from my CPET. Perhaps when I get the final report there will be more information there. Dr Tsiaras shared excellent notes from my visit in the portal, which was really helpful for both me and my PCP. In her notes she even asked if I had any more questions! This kind of open dialogue feels so important - and compassionate- when dealing with an uncommon diagnosis.","review_date":"2026-02-18"},{"body":"excellent as always!","review_date":"2026-02-16"},{"body":"Sure took the time needed to make sure I understood what happened to me. I never felt rushed and every question I had was answered thoroughly.","review_date":"2026-02-15"},{"body":"The cardiologist was very professional and very kind . All my questions were answered. A very good visit.","review_date":"2026-02-15"},{"body":"I had 2 appointments, the first for an Echo Cardiogram, the second a follow-up with the cardiologist. These were preceded by a nurse/clinician who took my vitals. Everything went fine, no complaints on any score.","review_date":"2026-02-15"},{"body":"Professional and caring experience.","review_date":"2026-02-25"},{"body":"Absolutely LOVE Mass General and my Doctor!","review_date":"2026-02-08"},{"body":"Sarah Tsiaras, MD Cardiology is the best!","review_date":"2026-02-15"},{"body":"She is an excellent provider!","review_date":"2026-02-08"},{"body":"I am very happy with Dr. Tsiaras. I feel she is very knowledgeable. She listens. She shows care and concern and is trying to give me the best care and help for my condition that she can. I highly recommend her. I've even sent my family to her.","review_date":"2026-02-06"},{"body":"Excellent in every way, great expertise and caring manner.","review_date":"2026-02-04"},{"body":"[redacted] I was very satisfied with the visit and her points of view","review_date":"2026-02-01"},{"body":"Was a telephone visit. Doctor was very thorough with her questions and answers.","review_date":"2026-02-05"},{"body":"I assume you are talking about the woman o who did my echo test. Or maybe you are talking about Dr. T. who ordered the test. In both cases the experience was very positive and much appreciated.","review_date":"2026-01-31"},{"body":"I am happy to be Her patient.","review_date":"2026-01-31"},{"body":"Dr. Sarah Tsiaras explained a new phenomenon to me, calcification of arteries. [redacted] It was a very productive zoom call.","review_date":"2026-02-11"},{"body":"Dr. Tsiaras is a very thoughtful and considerate cardiologist who engages in dialogue and helps make decisions in a very thoughtful and calm manner. Her care is very much appreciated and I consider her top-notch. Thank you.","review_date":"2026-01-28"},{"body":"I feel very comfortable and assured of my care.","review_date":"2026-01-18"},{"body":"All positive","review_date":"2026-01-18"},{"body":"This was my first meeting with this provider. I had just been transferred to her care after seeing a cardiology fellow for the past couple of years. I appreciate the seamless and comfortable transfer. This provider was very knowledgeable, experienced, focused and informative. It was easy to develop trust and confidence in her.","review_date":"2026-01-20"},{"body":"I am constantly amazed and thankful for how helpful Dr. Tsiaras and her entire team are. They are always so responsive.","review_date":"2026-01-15"},{"body":"Dr. Tsiaras does a thorough examination on my current condition and gives me advice or recommendations on my health.","review_date":"2026-01-14"},{"body":"The provider was excellent, amazing. I wish I had more doctors like her that would take the time to review everything with me as she did. I can't say enough about Sarah. Thank you.","review_date":"2026-01-14"},{"body":"I feel like the nurse was very nice. The doctor was very nice. They both answered any questions that I had and any concerns that I had.","review_date":"2026-01-14"},{"body":"Very please with everyone I spoke with and met with during this appointment.","review_date":"2026-01-14"},{"body":"Dr Tsiaris has been very open and available when I need her. She knows me and my healthcare needs and always has my best interests at heart . I have full confidence in her and [redacted].","review_date":"2026-01-11"},{"body":"Acknowledged and precise","review_date":"2025-12-29"},{"body":"She is thorough and careful and very caring and personable. I feel that she considers me as a whole person and takes time to determine the best course of care.","review_date":"2025-12-31"},{"body":"Excellent","review_date":"2025-12-29"},{"body":"Explained everything","review_date":"2025-12-29"},{"body":"Dr Tsiaras has been following me. She was well prepared for my recent visit.","review_date":"2025-12-29"},{"body":"Dr. Tsiaras is a very thorough and caring doctor.","review_date":"2025-12-23"},{"body":"Dr. Sarah Tsiaras is an excellent listener and exceptional Doctor. She was very informative, communicated well to us, and showed a wonderful compassion for my situation.","review_date":"2025-12-22"},{"body":"Dr. Tsiaras and her staff are always very, very pleasant and explain everything in the proper way. Even if you don't understand it, they go over everything. Very, very comfortable. I've recommended her many times to many different people. We appreciate all that they do. Thank you.","review_date":"2025-12-22"},{"body":"Outstanding professional. Worked with me throughout my treatment. Always listened to me and took my perspective into account as we progressed. A kind and considerate highly qualified cardiologist of the highest order. In my eyes, a \"rock star\" in her field of practice. A blessing to have access to her and this level of care. Forever grateful.","review_date":"2025-12-08"},{"body":"Dr Tsiaras thoughtfully reviewed my case. I truly appreciated the depth and thoroughness of the examination she performed-more comprehensive than anything I received even during my week inpatient the hospital. As a nurse of 46 years, I know how rare it is to find a physician who demonstrates such professionalism, care, and genuine attentiveness. I came to my appointment feeling frightened and unsure of what to expect, but I left feeling confident and reassured that I will be okay. That peace of mind is a gift.","review_date":"2025-12-07"},{"body":"Dr Tsiaras is attentive, she answers all my questions with clear explanations, she is thorough and extremely knowledgeable.","review_date":"2025-12-09"},{"body":"Totally satisfied w my experience","review_date":"2025-12-08"},{"body":"Dr Tsiaras is very caring and addresses all my questions & concerns. She is very good about following up.","review_date":"2025-12-07"},{"body":"Always a pleasure to see Dr. Tsiaras. Very kind, caring and thorough.","review_date":"2025-11-30"},{"body":"Hi, yep, this is [redacted]. I just want to say Dr. Tsiaras is absolutely wonderful, along with her staff who is just as wonderful, knowledgeable, and attentive. I really appreciated the one-on-one time with Dr. Tsiaras. This is my first time to visit with her, and it was a really good experience.","review_date":"2025-11-26"},{"body":"Excellent","review_date":"2025-11-23"},{"body":"Dr. Tsiaras came highly recommended and for good reason - she's the very best. She's professional, respectful and friendly. She listens to questions and her answers and explanations are always easy to understand. I'm grateful that Dr. Tsiaras is my cardiologist and would recommend her to my family and friends.","review_date":"2025-11-21"},{"body":"All staff and doctor very caring and knowledgeable. Would highly recommend.","review_date":"2025-11-15"},{"body":"She is the Best.","review_date":"2025-11-15"},{"body":"She has been my cardiologist for several years, helped me get difficult blood pressure under control, monitors my various problems. I think she is an excellent doctor.","review_date":"2025-11-12"},{"body":"We really like Sarah. My husband, he already booked an appointment with her. So he's going to opt her as his cardiologist.","review_date":"2025-11-12"},{"body":"She was courteous and very knowledgeable. She explained everything very well.","review_date":"2025-11-10"},{"body":"She was excellent. Caring, informative, took a holistic view and listened to me. She also gave me guidance in a way I could comprehend.","review_date":"2025-11-09"},{"body":"She is the best! Wonderful at her job.","review_date":"2025-11-09"},{"body":"Dr Tsiaras is a brilliant and kind doctor, a very special and exceptional doctor.","review_date":"2025-11-09"},{"body":"I left the office unclear about the medication she prescribed. I thought it replaced an existing medication but she was adding to it. I was very unclear about when I was to have the echocardiogram. I thought right away but she specified a year from now. [redacted] I felt the dr was very rushed. Pleasant but rushed and I left confused and uncertain","review_date":"2025-11-08"},{"body":"Very professional, good listener who cares about the patient","review_date":"2025-11-08"},{"body":"She's always pleasant, professional and thorough. I recommended her to my brother and sister...both are now patients.","review_date":"2025-10-23"},{"body":"Dr. Tsiaras is fabulous! Very thorough, intelligent, compassionate and a great listener. So lucky to have her on my team!","review_date":"2025-10-22"},{"body":"Dr. Tsiaras is extremely knowledgeable and knew my case well. Her recommendations are very acceptable and insightful, and she's a top-notch doctor in every way you look at it.","review_date":"2025-10-15"},{"body":"This was my first appointment with Dr Tsiaras and I was very impressed with her demeanor and knowledge. I was very comfortable talking to Dr Tsiaras. She didn't rush me and she is a good listener. I am very pleased with Dr Tsiaras.","review_date":"2025-10-09"},{"body":"Dr. Tsiaris is a very thoughtful, compassionate, and thorough physician.","review_date":"2025-10-08"},{"body":"Every doctor should be as caring and understanding as she was. Very professional and thorough.","review_date":"2025-10-04"},{"body":"Sarah was great!","review_date":"2025-10-01"},{"body":"I have a 10 year relationship with Dr Tsiaris and NP [redacted], so they know me and that helps a lot. They can be straightforward and calm.","review_date":"2025-09-28"},{"body":"Knowledgeable and friendly provider","review_date":"2025-10-01"},{"body":"She's the best!","review_date":"2025-09-28"},{"body":"I feel she listens, is attentive to all my needs, and is very thorough and a very good provider.","review_date":"2025-09-26"},{"body":"Dr. Tsiaras has a warm and kind demeanor and always takes time to listen to my questions and concerns and explain things to me in a way I can easily understand.","review_date":"2025-09-22"},{"body":"Exclent experience","review_date":"2025-09-20"},{"body":"Dr. Tsiaras was wonderful and caring. After I left her office I not only felt reassured, I felt I had just seen a therapist. She listened intently and offered kind words. Her knowledge and experience gave me comfort given my situation.","review_date":"2025-09-14"}]}