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Your Dedicated Pediatric Cardiologist

in Los Angeles

Visiting a pediatric cardiologist can feel overwhelming for parents, but our goal is to put your mind at ease the moment you walk through our doors. Our Los Angeles office is warm, welcoming, and designed with families in mind — a place where both children and parents feel comfortable and cared for. Dr. Hidalgo and her compassionate team take the time to listen, answer every question, and guide you through each step with understanding and reassurance. You’re not alone on this journey — we’re here to support your child’s heart health with expertise, kindness, and genuine care.

Meet Our Provider

Sylvana M. Hidalgo, M.D.

Parent Resources

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What do I need for my first visit?

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Heart education

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What Our Parents Say

Dr. Young is an amazing and absolutely knowledgeable professional. There are only a few key people who have made positive impressions in my life and he's one of them. Not only because he saved my life about 30 years ago (open heart surgery) and I have been able to live a normal and healthy life, but because of his genuine love for human life and the way he cared for me like a father. Very honest and genuine person. Heaven sent for sure. May God continue to bless him and his family abundantly.

Dr. Young is a very great doctor he was my husband doctor for many many years. They has a special bond he even went to UCLA and overseen my husband surgery. We love u dr.young Luisito misses you

Dr. Young and his staff were amazing with my son, that has special needs. They made him feel so relaxed and comfortable. We had a great experience. Thank you Dr. Guillermo Young. May the Lord continue to bless you, for helping all the children that are under your care ๐Ÿ™๐Ÿปโค๏ธ

Dr. Guillermo Young is a blessing! I was his patient about 40 years ago with Tetralogy Of Fallot. He saved my life and I have lived a great healthy life. I always remember him and pray that God continues to bless him and his family! He has had many years saving lives!! You are an Angel on Earth Dr! All my love, Thank you!

My doctor๐Ÿ’–๐Ÿ’– he did a heart surgery on me when i was 3 years old and now im 29 years old thanks to God and to Dr. Guillermo A. Young im doing great. ๐Ÿ™๐Ÿ’–๐Ÿ™๐Ÿค— I still remember my last visit on his office when he told me that i didnt have to worry about nothing that i was ready to go on the Sixflags rides๐Ÿ˜€ and i did jijiji God Bless him helping many more people๐Ÿ’–๐Ÿ™

Dr. Young is an amazing and absolutely knowledgeable professional. There are only a few key people who have made positive impressions in my life and he's one of them. Not only because he saved my life about 30 years ago (open heart surgery) and I have been able to live a normal and healthy life, but because of his genuine love for human life and the way he cared for me like a father. Very honest and genuine person. Heaven sent for sure. May God continue to bless him and his family abundantly.

Dr. Young is a very great doctor he was my husband doctor for many many years. They has a special bond he even went to UCLA and overseen my husband surgery. We love u dr.young Luisito misses you