{"distribution":{"1":{"rating_count":2,"rating_percentage":1.02,"review_count":0},"2":{"rating_count":0,"rating_percentage":0,"review_count":0},"3":{"rating_count":2,"rating_percentage":1.02,"review_count":1},"4":{"rating_count":7,"rating_percentage":3.55,"review_count":0},"5":{"rating_count":186,"rating_percentage":94.42,"review_count":62}},"average_rating":"4.870051","rating_count":"197","source_url":null,"reviews":[{"body":"The doctor is amazing. He always treats me well, always answers all my questions, and has me on the mend. So that's all I can ask for.","review_date":"2026-07-29"},{"body":"Excellent. So thankful to have gotten in at MGH. EXCELLENT CARE AND SERVICE","review_date":"2026-07-26"},{"body":"Definitely felt that he was empathetic towards my situation and truly cared about my concerns. I also felt that it mattered to him that I was comfortable with OUR (his and my) future plan of care.","review_date":"2026-07-26"},{"body":"Dr. Lozano-Calderon is the best surgeon I have ever worked with Very professional","review_date":"2026-07-23"},{"body":"The oncologist is one, exceptional doctor. His breaking down to simplicity the medical nuances that involve me was dynamic.","review_date":"2026-07-22"},{"body":"OUTSTANDING","review_date":"2026-07-19"},{"body":"Dr. Lozano was extremely nice, understanding, and extremely, extremely thorough with explaining things and the procedures and very caring and very knowledgeable. So yeah, overall I'd say the experience was a 10 out of 10. Maybe 9 out of 10.","review_date":"2026-07-17"},{"body":"Dr was thorough in explaining alternative treatment for a tumor in my left hand. I came to MGB for a second opinion. Amputation of my ring finger is procedure my Dartmouth Dr's recommended. Dr Lozano has a procedure to safe my finger and remove the tumor.","review_date":"2026-06-25"},{"body":"It was top notch. Very knowledgable and informative","review_date":"2026-06-25"},{"body":"Everyone in this office was kind and courteous. I highly recommend the doctors and nurses in this practice.","review_date":"2026-06-17"},{"body":"Great experience, Dr was clear and understanding","review_date":"2026-06-14"},{"body":"I wish we had more time for this visit","review_date":"2026-06-13"},{"body":"I have nothing to complain about","review_date":"2026-05-24"},{"body":"I have nothing negative to say about each doctor that I saw. They were curtiouse and answered all my concerns.","review_date":"2026-05-26"},{"body":"I've seen coming to Mass General since August of 2020, I have always been treated with the utmost care and respect. Keep up the good work.","review_date":"2026-05-17"},{"body":"Dr. Lozano takes time to listen to any concerns you may have and answer all your questions. I recommend him and rate him tops in his field.","review_date":"2026-05-03"},{"body":"Dr Lozano listened to everything I had to say and gave me options to help alleviate my pain.","review_date":"2026-04-26"},{"body":"Excellent Thank you","review_date":"2026-04-23"},{"body":"Dr Lozano always treats me like I'm his only patient. He explains things so I can understand","review_date":"2026-04-23"},{"body":"Excellent","review_date":"2026-04-22"},{"body":"So kind, friendly and supportive. Offered care and recognition of my anxiety without making me feel like my anxiety was a problem. Would love all doctors and healthcare workers to be more like him.","review_date":"2026-04-22"},{"body":"He did an excellent job on fixing my left hip fracture. He was right up front with me in letting me know that my healing process was going to take probably twice as long to fully heal do to my extremely low immunosuppressant body health issues.","review_date":"2026-04-16"},{"body":"Dr Lozano was one of the best doctors I've ever seen. He and his staff are knowledgeable, listen and explain everything.","review_date":"2026-04-13"},{"body":"Treated with respect on all visits","review_date":"2026-04-12"},{"body":"Yes, Dr. Lozano is a wonderful, wonderful doctor, very knowledgeable, very compassionate, and very easy to talk to. He's an outstanding doctor. I highly recommend him.","review_date":"2026-04-08"},{"body":"He is always pleasant and listens to my questions and answers them in a way that's easy to understand","review_date":"2026-04-04"},{"body":"He' s a wonderful doctor and I trust his knowledge and experience. He's also kind and personable.","review_date":"2026-03-30"},{"body":"He is the absolute best.","review_date":"2026-03-22"},{"body":"Very pleased with the treatment I received.","review_date":"2026-03-18"},{"body":"My experience was wonderful from the moment I called to get an appointment through seeing my doctor! Highly Recommend!","review_date":"2026-03-15"},{"body":"Very kind and knowledgeable, explained my surgical procedure. Couldn't say enough good things about him.","review_date":"2026-02-26"},{"body":"I was very satisfied with the medical care provided by Dr. Lozano. I trusted him immediately and I would certainly go back to see him again.","review_date":"2026-02-26"},{"body":"Very good- I have a lot of confidence in him.","review_date":"2026-02-22"},{"body":"Dr. gave me options to consider for my condition. Opted for non-surgical intervention but I am having an optional possible treatment he suggested.","review_date":"2026-02-19"},{"body":"I can't say enough good things about Dr. Lozano and his staff, especially [redacted]. Both very considerate, warm, loving people. Dr. Lozano saved my life. Saved my leg, and I'd be forever grateful. He's the best. There are none better. Good man, and what a wonderful woman.","review_date":"2026-02-27"},{"body":"He's respectful, articulate and approachable.","review_date":"2026-02-25"},{"body":"Dr. Lozano is a great medical professional and it very thoughtful. He explains everything so you understand what is going on. I would recommend this provider to all my friends and family.","review_date":"2026-02-11"},{"body":"Dr Lozano went over my MRI and other test and explained them to me so that I could understand them.","review_date":"2026-02-08"},{"body":"My visit with Dr. was excellent. He answered all of my questions. I was very impressed with the level of knowledge that he had about my past examinations and his level of interpretation of the imaging studies that were made. In my book, Dr. Santiago Lozano Calderon is just one of the premium top-notch providers out there. I would not hesitate to see him again and trust him implicitly.","review_date":"2026-01-23"},{"body":"I used the portal to ask a follow-up question, actually two follow-up questions, but I'm still waiting for a return call from someone on staff there. So I think it would be great to have faster follow-up to questions through the portal.","review_date":"2026-01-23"},{"body":"This office is fantastic","review_date":"2026-01-23"},{"body":"I liked that Dr Lozano sat down and made eye contact while he explained things.","review_date":"2026-01-21"},{"body":"Dr. Lozano was extremely knowledgeable, compassionate, and caring. I feel like I am in very good hands.","review_date":"2026-01-14"},{"body":"The doctor was very busy and had 2 previous scheduled visits that he cancelled for other surgeries . However he was there and on time and attentive this time.","review_date":"2025-12-22"},{"body":"It was a very worthwhile and informative visit with the doctor and I'm glad we were able to handle it with a televisit rather than my driving into Boston, which is difficult to do.","review_date":"2025-12-21"},{"body":"Dr. Lozano was excellent as always, and I can't say enough about him. He's a terrific doctor.","review_date":"2025-12-19"},{"body":"He's an excellent listener, very patient, extremely knowledgeable. I felt very comfortable with him. He just spent a lot of time with me and explained everything and I couldn't recommend him more highly.","review_date":"2025-12-19"},{"body":"The Doctor and [redacted] are/ [redacted] the best part of my team.","review_date":"2025-12-16"},{"body":"I have been seeing mostly the same providers for the last 5 years plus, have always been treated with kindness and respect.","review_date":"2025-11-16"},{"body":"More detailed explanation of my diagnosis and reason for plan.","review_date":"2025-11-05"},{"body":"I feel I received excellent medical care from Dr. Lozano.","review_date":"2025-11-03"},{"body":"Dr. Lozano is a consummate professional and a brilliant doctor. Thank you.","review_date":"2025-11-04"},{"body":"Dr. Lozano is taking very good care of me. Worked tirelessly for the last two years and got my utmost respect in the nurses and the staff. Also, I wouldn't go anywhere else.","review_date":"2025-10-22"},{"body":"It was a great experience","review_date":"2025-10-18"},{"body":"The entire office is exceptional from the coordinators medical assistant, resident and of course the Dr. Lozano, [redacted] I am so grateful to [redacted] for her expedience and Dr Lozano for his exceptional care and attention to detail. Clearly he loves his job and treats his staff with respect. This is a happy workplace. Please thank the staff. [redacted]","review_date":"2025-10-16"},{"body":"Dr. Lozano is an excellent surgeon. He always shows us the x-rays and explains everything very well to us. He is excellent.","review_date":"2025-10-01"},{"body":"So fortunate to have been introduced to Dr Lozano Calderon when he was new to MGH! He is amazing ! We are all Blessed that MGH is his home!","review_date":"2025-10-01"},{"body":"I have been seeing Dr. Lozano for six years now and he is the best, as is his team. They saved my leg, saved my life. I am so lucky to have had them fighting for me.","review_date":"2025-09-28"},{"body":"Dr. Lozano always explains things carefully and completely.","review_date":"2025-09-18"},{"body":"Always exceptional","review_date":"2025-09-14"},{"body":"My experience with this Care provider was great !","review_date":"2025-09-12"},{"body":"excellent in all ways:knowledge, experience, compassion","review_date":"2025-09-10"},{"body":"Dr Lozano is an excellent, caring doctor. I have being seeing him for many years for a very complicated orthopedic problem. He explained everything and took the time to answer all my questions. I have great confidence and trust in Dr. Lozano. I highly recommend him.","review_date":"2025-09-10"}]}