Luis Castro, MD

Staff members were polite and helpful. Hospital staff where I had my ablation by Dr. Patrawala were…read morefantastic. I'd give both groups 5 stars. My low rating is for specific behavior I experienced from Dr. Patrawala, who did an ablation for treatment of AFib a few years ago. The ablation didn't stop the AFib. I'll never forget that last check up with him. "Huh. Still having AFib. Oh well. I got pills and procedures. That's all I got." Stands up, walks to the door, opens it. I see his back as he walks out the door, saying, "Call me if you need me." I was stunned. No empathy or concern. No curiosity about what we might do going forward. Just rude. Procedure didn't work, so he's just done, guess I'm on my own to start all over somewhere else. I've felt more empathy and concern from my car mechanics. I realize that for EPs, procedures are just what they do. What they focus on. If it doesn't work, it ultimately turns out to be your problem and they really don't seem to care. I think the way he handled it was reprehensible. I've come to see that this is common behavior in the world of electrophysiology. I really wonder what it is they expect patients to do. We sure don't want to have to deal with AFib. When we're treated so callously, it just makes a bad situation worse.

There are some really great Drs. Here and the support staff has always been very quick to respond…read moreand also caring.

Joseph A. Walsh, MD, MSc

5.0(3 reviews)

10.4 mi

One of best doctors I've ever encountered! My grandfather had a heart issue and I was told there…read morewere only a couple people in the world that were specially trained to help him. Dr Walsh was able to do the procedure without any issues. We were given frequent updates and communication was wonderful. I couldn't recommend him enough!

I had to rush my dad to ER at Mills-Peninsula Hospital last year, where he was diagnosed with…read morecongestive heart failure. A team of doctors was assigned to his care and leading the treatment was Dr. Joseph Walsh, the cardiologist. Once my dad was stabilized, he was moved to ICU. For the next four days, I saw Dr. Walsh visit my dad frequently. He took the time to sit with my dad and evaluate him thoroughly and monitored his progress with keen interest. He made sure my dad got the prescribed medications, diet, exercise and directed the attending nurse meticulously. All along, he discussed the diagnosis and plan with me with great patience. I truly feel that the Dr. Walsh saved my dad that day. Once my dad was discharged, Dr. Walsh proactively followed up with us and offered a comprehensive plan of action, which included placing a high-tech heart monitor, several relevant and revealing tests, and coordinated with other specialists, including GI specialist. It can be overwhelming for the patient/family to tackle so many specialists, but Dr. Walsh personally spoke with other doctors on the team and became our single point of contact. Dr. Walsh not only demonstrated his expertise in cardiology, but he did it with the warmest, most caring attitude. It felt like he was treating his own dad. My dad was comforted by his mere presence. This is profound and rare in today's medical experience. My family and I are eternally grateful to Dr. Walsh - thank you!

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Jeffrey Guardino, MD

5.0(4 reviews)

4.2 mi

I have been a patient of Dr Guardino for over 12 years and, practically speaking, he has changed my…read morelife. His friendly, forthright manner and attention to detail has made me much more health-conscious, I leave every 6-monthy appointment I have with him with specific goal(s) such as increasing my level of cardio exercise, reducing my intake of sugar etc as a result of which I can honestly say that I feel better now than I did say 20 years ago. Overall, I am very grateful for his thoroughness and supportive approach.

Doctor Guardino is an amazing Cardiologist. We moved here from Southern California and had a hard…read moretime finding a doctor who we felt could provide professional care but still be very personable and genuinely care about our well-being; Then we found Dr. Guardino and his staff. The office is welcoming and all very professional. Dr. Guardino listens to all of your concerns without interruption. He never makes you feel rushed because he takes the time to listen and explain what is going on with you and your body. Though he is professional and uses medical terminology, he never leaves you in the dark because he takes the time to explain the medical terms and also provide perfect analogies to help you understand every aspect of what is happening in your body, heart, and the logic behind his diagnosis.

Bahman Nouri, MD

4.3(6 reviews)

The first time I saw Dr. Nouri, I thought, this is a whole new level of cardiac medicine not seen…read morebefore. He will revolutionize your expectations in up-to-the minute pharmacology and the latest heart interventional care, all with a common-sense approach that leaves you feeling hopeful instead of fat and lazy and irresponsible. Unlike some specialists who wouldn't notice if your arm fell off on the exam table, he observes the patient's overall condition, and makes suggestions about other therapies outside cardiology. This is because he KNOWS SO MUCH ABOUT EVERYTHING, not just what he leaned in second year medical school thirty years ago. He is kind and funny, too. Highly recommended, and the office is on top of everything, too.

Dr. Nouri is a wonderful doctor and human being. I would trust him with my life and hands down…read morerecommend him to any of my friends. His staff is good too, polite and professional.

Tomoaki Hinohara, MD

3.7(6 reviews)

Very experienced and attentive doctor. He patiently listened and answered all my questions. Also…read morevery knowledgeable. Highly recommend.

I was recently hospitalized at Sequoia Hospital for a cardiac issue, and had the good fortune of…read morebeing evaluated and treated by Dr. Hinohara. He is very highly regarded as an outstanding interventional cardiologist, and well liked by the staff at the hospital as well. He immediately put me at ease with his calm and kind demeanor, thorough explanation of the procedure (cardiac catheterization) and professionalism. I had every confidence I was in excellent hands. Afterwards, the doctor came to my hospital room to review the findings and answer my questions. He truly made a frightening situation less stressful. I would highly recommend Dr. Hinohara.

Dignity Health

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Dignity Health Medical Group - Sequoia Cardiovascular Surgery

3.0(2 reviews)

We did much research before choosing a facility & cardio team for surgery…read more Dr Castro & Dr. Harmon were great. They work as a team and Dr. Harmon did most follow up in Hospital Castro also did rounds with other medical staff. They were both very patient, explained everything for non medical people to understand. We had an acquaintance also have them for surgery and a couple weeks out you wouldn't know they had surgery. 6 months out my spouse is riding 60 miles a day on their bike. Highly recommend

About 2 & 1/2 years ago, my mother's Doctor recommended us to take my mother to a cardiologist…read moresurgeon. I found three surgeons, one of them being doctor Luis Castro and the other two from Stanford. Our first surgeon we met was Doctor Castro. He explained that my mother had enlarged lungs due to blood not pumping out properly. After some tests and images that were done, he mentioned that a valve needed to be replaced a couple of other issues that he assures us to be able to correct. He said to my mom: "I promise that you will be feeling a lot better". He was so nice to my mother that my mother refused to meet the other two surgeons and insisted to go with Doctor Castro. Dr. Castro told us that he would be the one performing the surgery and would oversee the progress the entire time. Apparently, they are a cardio team during surgery, which was ok with me. The surgery went well, and Dr. Castro was also very pleased with it. On the second day after the surgery, they took my mother for a walk in ICU. I was so excited to see my mother walking straight and comfortably, very happy with the progress. During the recovery process we didn't see much of Dr. Castro, it was only his assistant whom I don't remember his name. Once this doctor visited my mom and said that he wanted to do a cardioversion to reset her heart rhythm. I was very scared to go through with this. I was given some documents to sign. I told him that I didn't know what those papers were saying, and he said it was ok to sign. He explained to me about the process and assured me that the only thing that could go wrong was the heart won't reset, no mention of a possible stroke. After hearing that I agreed and signed the documents, and I was asked to leave the room while he was performing the cardioversion. After a while he came out and told me that everything went well. Shortly after this process, the nurse who was in our room told me that something was not looking right. I asked her what it was, and she said she believed my mother had a stroke. She immediately called this Doctor; he came over and checked on my mom and said that it wasn't a stroke and left the room. I was so relived. Later as they took my mother for another walk, she stopped walking and she almost fell. They brought a chair and took her back to the room. The nurse called the doctor again, he came and said again that it was no stroke. It was very strange to me that nurse was insisting it was a stroke and the Doctor was denying it. He then told the nurse that my mother should be removed from ICU and placed upstairs in the hospital, and he then ordered the nurse to start the blood thinner medicine. My mother went through cardioversion process while she was not on blood thinner medicine! I told him that my mother had a stroke, and she should not be leaving the ICU, and he insisted that she didn't have a stroke. My mom was picked up to be transferred to hospital above and they first took her to imaging center and from there straight to a regular hospital bed. Later on that day, a neurologist visited us in the room and told us that she had a stroke. That's when I knew that the doctor didn't want to call the stroke while she was in his cardiology department, maybe to protect their reputation! From that moment the misery started, my mother couldn't move from neck down. Doctor Castro visited us in the hospital room, and he was upset about the outcome. When we visited Doctor Castro for the after surgery follow up a couple of months later, my sister and I asked him about what went wrong. He said he wished he was there to not let that happen. Apparently, the cardioversion process may have caused the small clot to move and go to her brain. I don't doubt that Doctor Castro is an excellent surgeon, but he should have been included in every step of the process. This error has ruined my mom's and my life. After 2 & 1/2 years, we are still going doctor to doctor, and have spent a huge amount of money to caregivers, physical therapies, and she still walks with a walker. She is a disabled woman now. She can't cook, take a shower, walk and pretty much she is unable to do all the basic tasks. Because of that she is now suffering from severe depression which the family must deal with. I'm extremely upset that we didn't get any apology or assistance for the errors that was made, not even a call. To make the long story short, their negligence ruined our lives, and someone needs to be held responsible for it. As a doctor, don't promise that you will be there for anyone when you can't. Do people lives mean anything to you? Or is it all about money and your department's reputation?

Adam Harmon, MD, Cardiovascular (heart) surgeon

Dignity Health Medical Group - Sequoia Cardiovascular Surgery

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Waiting Room

Engel Gregory MD

4.5(2 reviews)

My wonderful EP cardiologist! He eliminated my AFib with an Ablation procedure last year. He is…read morepart of Silicon Valley Cardiology and PAMF.

Dr Engle is a joy to chat with and seems to know his business. The staff is friendly,…read more professional...and very accommodating. I'll be back in two years. Enjoy and be well.

Ulrike Sujansky, MD

4.3(11 reviews)

7.2 mi

y is such a wonderful doctor I have now been a patient of her for 23 years she was also my moms…read moredoctor she is so smart and kind and caring I know when my mom was really sick she did a home visit and even did a ekg She is a rare breed

If I could give no starts I would. My parents were patients of Dr. Sujansky and upon moving back…read moreto the bay area, decided to go under her care as well. This was the worst mistake I have ever made. The first time I met her she called me the wrong name, I felt rushed and when asked to disrobe she did not step out of the room. I asked her to have some privacy and she acted as if she was going out of her way. I saw her one additional time after the first appointment and left in tears. I switched doctors later that day.

Dr. Sujansky

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Patrawala Rob A MD

5.0(2 reviews)

In 2014 Dr. Patrawala performed a bilateral catheter ablation and literally gave me back my life…read more Prior to finding Dr. Patrawala, I was living in Carmel and went to see a cardiologist who recommended that I live on blood thinners because I had daily episodes of atrial fibrillation & flutter. I spoke with several people living on the Monterey Peninsula who had a local practitioner perform unsuccessful ablations. One young man in Monterey had gotten the procedure 5 times and was still having problems! I went to Redwood City to see Dr. Patrawala and he fixed me completely the first time.

What can I say? Dr. Patrawala gave me my healthy life back after a successful ablation performed in…read moreDecember 2010. When I first met Patrawala I was skeptical of the procedure and mostly his apparent youth which equated in my mind to inexperience. When I learned that he had done hundreds of the same procedures I was greatly relieved. After nearly a year and a half later I feel better than I have in 20 years with more energy, less fatigue, sleeping so much better, and my quality of life has greatly improved. For me, the ablation procedure was immensely successful and I owe a great deal to Patrawala for his excellent medical care and treatment. Thanks, Rob.

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C W.

7 years ago

Dr. Luis Castro is the best of the best! I can't adequately express how grateful I am to him and his entire team. When my rare congenital heart defect reached the point where aortic valve replacement was necessary, I consulted with several well-known local Los Angeles heart surgeons. Despite their credentials and experience, none of them gave me the confidence to trust them with my life. Then I found Dr. Castro. His online videos were impressive, but it was our phone consultations that really convinced me to fly from LA to San Francisco for the procedure. Dr. Castro's confident knowledge and expertise amazed me. He even discovered something in the tests that every other surgeon had completely missed - a dangerous aneurysm. Just as reassuring as his brilliance and his calm demeanor, was the fact that he sincerely cared about me as a patient and as a person. He told me that he absolutely would not let my child grow up without her mother. (In fact, his fatality rate is zero.) He patiently answered all of my questions and made it clear I could call him personally with any concerns I had. His assistant Claudia was fantastic. She coordinated all the scheduling with me over the phone, followed up on all my questions, gave me directions to the hospital, and even set up my pre-op stay at Sequoia House, the medical group's low-cost lodging right next to the hospital. She was on top of every detail. Nurses Dana and Kelly took care of all of my needs before and after the surgery with kindness and efficiency. They are angels. Dr. Castro and his outstanding surgery partner, Dr. Harmon, flawlessly performed the valve surgery and fixed the aneurysm in less than half the time it takes most other surgeons. The post-op team was phenomenal, and the staff at Sequoia Hospital couldn't have been more professional or accommodating. Only two months after the surgery, I am walking three miles a day, have more energy and stamina, and I feel better than I have in years. Literally putting my heart in Dr. Castro's hands is one of the best decisions I have ever made. He kept his promise to my precious daughter. read more

Christine W.

7 years ago

I can't adequately express how grateful I am to Dr. Castro and his entire team. When my rare congenital heart defect reached the point where aortic valve replacement was necessary, I consulted with several well-known local Los Angeles heart surgeons. Despite their credentials and experience, none of them gave me the confidence to trust them with my life. Then I found Dr. Castro. His online videos were impressive, but it was our phone consultations that really convinced me to fly from LA to San Francisco for the procedure. Dr. Castro's confident knowledge and expertise amazed me. He even discovered something in the tests that every other surgeon had completely missed - a dangerous aneurism. Just as reassuring as his brilliance and his calm demeanor, was the fact that he sincerely cared about me as a patient and as a person. He told me that he absolutely would not let my child grow up without her mother. (In fact, his fatality rate is zero.) He patiently answered all of my questions and made it clear I could call him personally with any concerns I had. His assistant Claudia was fantastic. She coordinated all the scheduling with me over the phone, followed up on all my questions, gave me directions to the hospital, and even set up my pre-operative stay at Sequoia House, the medical group's low-cost lodging right next to the hospital. She was on top of every detail. Nurses Dana and Kelly took care of all of my needs before and after the surgery with kindness and efficiency. They are angels. Dr. Castro and his outstanding surgery partner, Dr. Harmon, flawlessly performed the valve surgery and fixed the aneurism in less than half the time it takes most other surgeons. The post-op team was phenomenal, and the staff at Sequoia Hospital couldn't have been more professional or accommodating. Only two months after the surgery, I was walking three miles a day! I have more energy and stamina, and I feel better than I have in years. Literally putting my heart in Dr. Castro's hands is one of the best decisions I have ever made. He kept his promise to my precious daughter. read more

Pat S.

12 years ago

Dr. Castro is the most caring doctor I have encountered in my life. He reviewed my Echocardiogram and answered questions my wife and I had before I was even a patient. When I saw him he took the time to explain my condition and answered all of my questions, even taking time to draw pictures and explain details of tests that had been performed to diagnose my condition. I am presently recovering from Mitral Valve repair surgery which Dr. Castro performed to correct Severe Mitral Regurgitation. I am totally surprised at how fast I have been able to get up walk and move about with minimal pain. Dr. Castro and his staff are all extremely professional, attentive and caring. I would highly recommend Dr. Castro and the staff at Sequoia hospital for any cardiac care that you might need. Pat S read more

J B.

14 years ago

I just completed open heart surgery. Dr. Castro was incredible. He and his team did an outstanding job and minimized my pain and anxiety after the surgery by near daily visits. He explained the procedure at length in advance. I was home six days later and am doing exceedingly well. He is the caring, competent doctor you are looking fr. Jerry read more

Mike S.

13 years ago

Dr. Castro is a great Cardiac Surgeon. He performed Mitral Vale repair on myself and he did a great job and I feel so much better. He makes you feel at home and keeps you informed every step of the way. I would highly recommend Dr. Castro as I believe he is the best in the business and a very good man. read more

John A.

8 years ago

He's the best heart surgeon anywhere. Saved my life.

Luis Castro, MD - cardiology - Updated August 2026

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Some of these reviews praising the "great communication" genuinely have me wondering if we spoke to…read morethe same person. Dr. Singel, if answering the phone and speaking to potential patients is not your strong suit, perhaps investing in a receptionist would be worthwhile. Especially if a caller is apparently expected to first acknowledge that they are speaking to the king of neurosurgery before being worthy of basic courtesy. Sir, get a grip. I have tremendous respect for doctors, the education, training, sacrifice, and responsibility that come with the profession deserve respect. But respect is mutual. You could be the President of the United States, and if you speak to me disrespectfully, I am absolutely going to match that energy. A title does not exempt anyone from basic manners. Maybe Dr. Singel is an excellent doctor. Maybe he is a phenomenal surgeon. Maybe the people who know him personally think he is wonderful. I can only speak from my experience as a potential patient, and that experience told me his communication and interpersonal skills could use some serious work. People calling a neurosurgeon's office are generally not calling for fun. They may be scared, confused, in pain, or simply trying to understand what their first step is. If you cannot tolerate a few questions, a little small talk, or someone who does not already understand the process, perhaps squeeze one more year into all that schooling or at minimum, a workshop on communication, patience, and how to speak to people with basic respect. And maybe then you'll notice a difference in how people respond to you. Because the interaction I just had told me everything I needed to know. I would never put my health, trust, or life in the hands of someone who could not manage to show basic respect during a simple phone call. You may very well be an exceptional surgeon, Dr. Singel. Unfortunately, I'll never find out and based on that conversation, I'm perfectly okay with that.

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