I had Afíb and the doctor implanted a Medtronic device which is basically a 24/7 EKG. Dev is a cardiologist (plumber). If you have Fib you need to see an electrophysiologist (electrician). Had a print out of my history from the Medtronic and was in Afib regularly. When I went to see Dr Dev I had to request to see him specifically. Otherwise you will only see his PA. Anyway, Dev looked at the report and said some doctor speak and was on his way. Went to electrophysiologist in Tarzana and had a cardio ablation done and have not had an Afib episode for a couple of years. I've heard there's also a good electrophysiologist at UCLA too. If you have heart issues, Dev might be fine for you. If you have Afib, it's important to see an electrophysiologist read more

I was admitted to Los Robles Hospital with chest tightness and shortness of breath in 2022 after a 5 Stent procedure in Hawaii. Dr. Vishva Dev (Director of Cardiology at Los Robles) was the on-call Doctor at the time. His caring, thoroughly informative professionalism convinced me to switch to Dr. Dev as my cardiologist. I am so very grateful that I made the switch. Shortly after, my wife Linda also happily, made the switch to Dr. Dev. Dr. Dev is very professionally and kindly assisted by Jan Qin, R.N., N.P. They are both supported by a team of knowledgeable, caring, and friendly staff. THANK YOU ALL! Larry and Linda Price read more

The care, efficiency and total understanding of your needs are taken care of by Dr Dev, Jen and staff. Dr Dev saved my life after my Hematologist took me off the blood thinner. This was after having a heart attack and double bypass. He performed angioplasty to remove the clots. I was in congestive heart failure. My last stress test showed that my ejection fraction was 55%, which is normal and I am no longer in congestive heart failure. I owe my life and my renewed health to Dr Dev and Jen!! read more

Excellent Interventional Cardiologist. I have been a patient for 20+ years. Dr Dev has successfully treated me through stenting, a TAVR procedure, cardiac arrest and general ongoing cardiology. His back-office support staff is excellent. In addition to periodic testing during visits by his office Practioners, his Physician Assistant (PA) recently diagnosed a non-cardiac condition that was missed by two other physicians' offices. After the diagnosis, Dr Dev and the PA referred me to other more appropriate non-cardiac physicians for treatment which included a hospitalization. I am thankful for the ongoing care of Dr Dev's practice. read more

Doctor Dev is my cardiologist and Jan is his Nurse Practitioner. I have received excellent care from both. Dr Dev and Jan have diagnosed several issues and Dr Dev has placed sever stents which has given me a better quality of life, and in a couple of cases saved my life. read more

I came to meet Dr Dev in the "Cath Lab" (OR) after I suffered a "silent" no symptoms heart attack. He quickly diagnosed my problem - blocked coronary arteries. I was athletic, but had a family history of heart disease. He literally saved my life that day. Five years later, I have done as well as possible with Dr Dev's correct regimen of medicines, exercise and low fat diet. I was able to live to see my daughter graduate from University as a teacher. My highest recommendation and thanks to Dr Dev. Competent, skilled surgeon, knowledgeable regarding correct medicines for a patient's exact condition, and a capable assistant in Nurse Practitioner Jan. No hesitation/ Dr Dev deserves "5 stars!" read more

Do not go to this provider. They trick me into believing that he is in network for my insurance and only afterwards did I find out that he's out of network. He's also careless in his evaluation & recommend a medication that's contraindicated with my underlying condition. Fortunately, I'm in the medical field & look things up before blindly following his advice. The assistant is also rude and not condescending. Don't be fooled by the other good reviews. Wonder their accuracy! read more

He saved my life. His caring nature and compassion is unsurpassed. His knowledge and ability is unmatched! Thank you to Dr. Dev and every one of his staff. read more

Dr. Dev is the most incredible doctor. My mom spent 4 days in the hospital being treated for the stomach flu when suddenly it was discovered she was actually having a heart attack. Her cardiologists weren't available. Best thing that ever happened because Dr. Dev was there in seven minutes. He put stents in her heart and saved her life. He avoided bypass. He was so kind and commutative throughout the entire process. I will forever be grateful to him for his amazing care and kindness. Best doctor ever. read more

When I take time off work to see an expert cardiologist, it would be nice to actually see the cardiologist. When I scheduled my visit, it was clearly stated it was with Dr. Dev. I was under the impression I would be seeing him and consulting with him. When I get that bill in the mail - which will be disputed - it will like say I had a cardiology consultation and charge me several hundred dollars. But NOPE. Without being given a courtesy or any kind of choice, I only saw his NP who literally did NOTHING for me. This was not a consultation. This was a waste of my time and PTO from work. I was asked roughly two questions, maybe one. "Why are you here?" Ok. Lovely. Why do you think I booked with an allegedly top notch cardiologist? Because I have a heart history and wanted Dr. Deb's expertise. I'm sorry but instead I left feeling very disappointed and angry. Why did I take time off to go in and see an NP who asked me a few questions that were not even the least bit compassionate. I will never be coming back to this office. He may be a wonderful physician, but a heads up to a patient that they will not even be seeing the physician would be appreciated. I would have cancelled. I felt like I was seen in a walk in/fast pass type of clinic and shuffled out the door. Unnecessary waste of my time. And I will not be paying for any sort of consultation fee. read more

Don't see Dr. Dev unless you want a doctor that is not interested in your health but only interested in his own personal gain. Not only is he losing patience but he is losing his own staff. read more

I met with Dr. Dev recently because I experience chest pains when I exert myself. After his nurse practitioner entered an extensive medical background in the computer, Dr. Dev came in to speak to me. He spent maybe 5 minutes with me and said I needed to come back for extensive tests and these tests would tell us everything we need to know. About a week later I had the tests done and left the office without seeing the doctor. I was told he'd get in touch with me. When I didn't hear anything I waited a week and then called the office to find out what my results were. The office person told me the test results were all normal. When I asked her about the chest pains and what I could do to find the cause, she told me to go to the emergency room if I have chest pain. She said they have prescribed two medications for me and when I asked to speak to the doctor, I was told that he does not take phone calls and that I would need to make an appointment for an office visit! I spent 5 hours in his office, and he can't spare 10 minutes with me on the phone? I just wanted to know how to proceed to find the cause of the chest pains. Obviously I will not go back to this doctor. What a disappointment in him. read more

Wonderful cardiologist! Great, friendly staff, nurses and assistants. Dr. Vishva is a fantastic doctor. He's a friendly straight shooter who cares about his patients. Big fan! This office is located near Robles hospital in Thousand Oaks. There is plenty of parking and easy access to the elevators. Overall, this is easily a 5 star medical practice. If you (or someone you know) needs a cardiologist, I highly recommend Dr. Vishva's office. read more

Recently, my husband had a mitral clip procedure which Dr Dev performed along with Dr Fontana and we could not be happier with the results and care from beginning to end. They are both excellent surgeons and compassionate individuals. read more

I have never needed a cardiologist until 5 months ago when I was stricken with septic shock and rushed to the ER. Within hours I was in ICU with blood pressure crashing and all organs failing. Dr. Dev was called in and became part of the team that helped save my life. Without going into detail he managed the care of my heart (including a 'heart attack') and crashing blood pressure expertly. After being moved from ICU I started to become aware of the physicians who had been treating me. Dr Dev was warm, caring and intensely focused on giving me the best of care. After leaving the hospital and engaging in followup care Dr Dev has continued to manage my care expertly. He is Chief of Cardiology at Los Robles and I wouldn't hesitate to refer anyone, including my friends and family, to his care. read more

Highly recommended. He's a wonderful cardologist, has a great bedside manner & is truely interested & concerned with his patients health. Dr. Dev has been my Dad's cardologist for over 15 years now. My Dad has a weak heart as a result of a heart attack & a triple By-pass about 20 years ago. A couple of weeks ago, Dr. Dev became my Mom's cardiologist after she suffered a slight heartack. In addition he has also recently become my cardologist because he discovered a hole in my heart while doing some routine tests because of my parents heart historys. Dr. Dev alon with his office staff make you feel welcome and everyone takes the t ime to talk to you. You are not just rushed in and out of your appointment and they are always very positive. read more