"Dr. Castillo-Sang was great throughout the whole process. He thoroughly explained the procedure and the options going into surgery. He was there post-op to continuously monitor my status and that I was getting whatever I needed.
He always took the time to explain and/or answer all of our questions in the hospital and at the post-op appointment.
I am feeling great and I am up and getting around and it’s been less than two weeks. So, I am very excited with the results."
-- Mary McCann, Mitral Valve, Valve Replacement, 05/05/2025
"GREAT! I am extremely thankful for Dr. Castillo-Sang."
-- Connie Berndsen, Mitral Valve, Valve Repair, MitraClip, 05/02/2025
"Absolutely amazing! I would recommend Dr. Castillo-Sang to everyone!"
-- Debbie Klare, Aortic Valve, Valve Replacement, 04/14/2025
"Wonderful service! Dr. Mario Castillo-Sang is a great surgeon. I would recommend him to anyone. I have my life back. At 69 years old, I feel like I'm 40. LOL!
His team and nurses all play a big part in recovery. Thanks!"
-- Barbara Lewis, Mitral Valve, Valve Replacement, 02/24/2025
"Dr. Castillo Sing was excellent. He was patient and answered all my questions pre-surgery. After surgery, he was equally superb. He is personable and compassionate. I owe him enormous gratitude for my level of care."
-- Judith Gannon, Mitral Valve, Valve Repair, 02/12/2025
"Dr. Castillo-Sang was very thorough in explaining the procedure before and after surgery. He was very patient with us throughout the process. Surgery was minimally invasive and recovery has been relatively easy."
-- Beth Walsman, Aortic Valve, Valve Replacement, 02/04/2025
"I am so very grateful to Dr. Castillo-Sang for the wonderful "second chance at life" he has given me!
The level of care has been amazing along with the excellent results of the surgery. His heartfelt compassion was obvious with everything he did! Thank you so very much, Dr. Castillo-Sang!"
-- Jean Franklin, Mitral Valve, Tricuspid Valve, Valve Repair, Valve Replacement, 01/31/2025
"Outstanding! Dr. Castillo-Sang truly cares and made sure I understood everything along the way."
-- Diane Hensley, Mitral Valve, Valve Repair, Robotic Surgery, 01/29/2025
"Dr. Castillo-Sang exceeds all expectations. He is very caring and personable. He connected with me and treated me as if I was his father. I would recommend him to anyone looking for cardiac surgeon."
-- Jeffrey McDonald, Aortic Valve, Valve Replacement, 01/22/2025
"Excellent. Treated with a sense of urgency. I felt confident in his and the teams ability and knowledge."
-- Robert Meyrose, Aortic Valve, Valve Replacement, 01/21/2025
"Wonderful caring doctor with great people skills. Very informative and patient."
-- Judy Simon, Mitral Valve, Valve Repair, MitraClip, 01/20/2025
"Dr. Castillo-Sang was very thorough in explaining every aspect of the transcatheter mitral valve repair (TMVR). I was immediately set at ease by his knowledge and passion for his work. He was the most personable and accessible doctor that I have ever met.
All of staff I encountered while under his care also spoke very highly of him. My surgery went exceptionally well and without any complications. I feel so very grateful to have had him as my surgeon and I am very much looking forward to enjoying life with new energy."
-- Erica Shields, Mitral Valve, Valve Repair, 01/14/2025
"My experience has been wonderful! Everyone has been very knowledgeable and encouraging in my recuperation! Everyone has been kind and very professional! Would definitely recommend their care!"
-- Cheryl Vossmeyer, Mitral Valve, Valve Repair, 01/08/2025
"Dr. Castillo-Sang is an amazing surgeon. He did a wonderful job and I feel great. He has been wonderful. I would highly recommend."
-- Gary Dickerson, Mitral Valve, Valve Replacement, 12/20/2024
"Dr. Castillo-Sang’s care before-and-after surgery went far beyond what can be expected. I knew in my first discussion with him that he was a compassionate person. He often checked on me in the hospital. Follow-up visits are very pleasant and thorough. He takes good care of me and I am grateful he is my doctor."
-- Jeanette Hirs Haued, Mitral Valve, Tricuspid Valve, Valve Repair, 11/07/2024
"I love my surgeon. He explained everything to me beforehand. He and his staff take great care of my heart. They are kind and considerate and compassionate."
-- Linda Pruent, Tricuspid Valve, Valve Repair, Mini-Thoracotomy / Port Access, 10/15/2024
"Dr. Mario Castillo-Sang, Thank you for your professional care, your knowledge and skill! Thank you for giving me a better heart and a chance to live a healthier life!
My family and I thank you and your professional medical team and your personal concerns and medical skills. I will refer you and your team to anyone in need of cardiac medical care. My heart is healthier because of you, Dr. Mario Castillo-Sang!"
-- Terry Funk, Mitral Valve, Valve Repair, Coronary Artery Bypass, 06/11/2024
"Dr. Sang, who I call "Super Mario", saved my life. Not only did he save my life but his minimally-invasive technique saved me months of recovery time.
Originally, he thought there were 3 tears in my mitral valve. There ended up being 11 and there was a small hole in my heart. Once he found that out, he reassessed the situation and decided he could still do the repair instead of having to replace my valve.
When I met him the first time, he spent 45 minutes with my wife and me. He explained everything to us and answered all of our questions. He has a great bedside manner! I highly recommend him to anyone needing heart surgery."
-- Mark Behler, Mitral Valve, Valve Repair, 06/06/2024
"Doctor Sang was extremely helpful in explaining my procedure in a language that I could understand. He provided the most optimistic outlook for my surgery and future expectations of my overall health and well being. I appreciate the confidence he instilled in me and my family thank you!"
-- Charles Young, Pulmonary Valve, Valve Repair, Mini-Thoracotomy / Port Access, Coronary Artery Bypass, 04/15/2024
"Very smooth process, very professional and explained procedures thoroughly. Hospital stay to be as expected, no issues or complaints."
-- Matthew Bonezzi , Mitral Valve, Valve Repair, Maze Procedure, 03/21/2024
"Excellent, could not have gone better!!!"
-- Craig Beckleu, Mitral Valve, Valve Replacement, 02/16/2024
"Dr. Castillo-Sang's bedside matter is very kind and his surgical results were incredible. He explained difficult technical information to us in a way that we were able to understand. He also displayed confidence and expertise that helped to comfort us.
He is brilliant, empathetic and kind. I will be grateful for Dr. Castillo-Sang for the rest of my long happy life!"
-- Joan Wells, Mitral Valve, Valve Repair, 01/29/2024
"I loved Dr. Mario! Not only was my surgery successful with a relatively easy recovery and minimal scaring, but my surgeon had awesome bedside manner, was extremely caring, and was always available for any follow up questions or care, both while in the hospital and after discharge. I highly recommend Dr. Mario to anyone that needs this type of surgery."
-- Ginger Mullins , Mitral Valve, Valve Repair, Mini Sternotomy, 12/13/2023
"I can not express what a wonderful doctor and human being Dr. Castillo-Sang is. He has always treated me with kindness and concern. Dr. Castillo-Sang really listened to me which I appreciated. My surgery went without any concerns. Dr. Castillo-Sang kept me in the loop explaining the why's and the how's. I highly recommend Dr. Castillo-Sang to anyone, which I already do."
-- Sharon Ringshauser, Mitral Valve, Valve Replacement, 12/12/2023
"When first diagnosed in hospital, the Head of the Cardiac department recommended that surgery had a very high risk of death (based on being 80 years old) and the hospital would not allow an operation to repair or fix my mitral valve. After further consultation with my heart doctor, he recommended Dr. Castillo-Sang be consulted.
Dr. Castillo-Sang reviewed my records and agreed to perform the operation. He performed a non invasive open heart surgery and replaced my mitral valve. The surgery went well and was accomplished with out breaking any bones. The surgery was even accomplished without me needing to take any pain medicine. Dr. Castillo-Sang closely followed my recovery from surgery and kept me fully informed as to my progress and what I needed to do after release from the hospital. In addition, he is a really nice and caring person. He made me feel secure during the entire process.
Dr. Castillo-Sang is a gifted and caring surgeon who is constantly trying to improve the methods and techniques to lower the risk of surgery and also to make the operation less intrusive on the patients body.
What a great Doctor and Surgeon. I highly, highly recommend contacting Dr. Mario Castillo-Sang if you ever need the replacement of your mitral valve."
-- Pamela Marcum, Mitral Valve, Valve Replacement, 12/07/2023
> See 23 more patient testimonials
About Dr. Mario Castillo-Sang,
25 Patient Reviews for
My Specialities & 
Education, Training & Certificates
Schedule Appointment
News & Online References Featuring Dr. Mario Castillo-Sang