Cardiologist Dr. Karlsberg saved my life. His Physician's Assistants and staff are dedicated as well. They run a very busy office and always try to make you feel at ease. No one in the medical profession on their side of the office is having a good day with insurance companies so be patient, kind and understanding. Make your insurance company work for their premiums! read more

It's been over one year since I was his patient, and my first appt with him was fine. He advised me not to pay the $500 administrative fee until I felt comfortable as a patient, as I had recently had a horrible experience with my prior cardiologist. After the first appointment I never was able to see Dr Karlsberg. His physician's assistant was the one who saw me for all subsequent appointments, even though the appointments were made to see Dr Karlsberg. I was feeling like I didn't really have a cardiologist. When Dr Karlsberg called me to demand that I pay the $500 administrative fee and blamed me for the fact that only his PA showed up for all my office visits, I decided it was not in my best interests to continue as a patient there. read more

I cannot stress how much I like and admire Dr Ronald Karlsberg. I was confronting a potentially serious issue which I needed checked out immediately. After a call from my primary physician, Dr Karlsberg saw me as a new patient with zero notice. He conducted two days of testing to make sure he had a complete understanding of what was going on with me. He was kind and understanding and clearly extremely knowledgeable and passionate about cardiology and treating patients. He spent a great deal of time with me and and wife explaining the test results and reassuring us that we were safe and everything would be fine. He outlined our course moving forward and we left his office with knowledge and confidence. What a godsend. Rather than undergoing invasive, possibly unnecessary procedures had I gone to the ER, he performed exhaustive, non-surgical high-tech scans and tests at the facilities in his medical offices to get detailed diagnostics that those more invasive procedures would not have provided. I highly (and I mean HIGHLY) recommend this cardiologist - not only Dr Karlsberg - but also his excellent assistants, nurses, technicians and support staff. They are gracious, calming, helpful and extremely efficient. Thank you, thank you, thank you. read more

Probably one of the most arrogant and inconsiderate offices in Los Angeles. Very unprofessional with patients and was obsessed by Covid. They insist on additional funds beyond insurance to ensure quality of care. there are far more caring Cardiologist in Los Angeles. read more

One of the most horrible experiences of my life was meeting this guy. It has been over 4 years since my visit, and I'm still not over it. He was recommended, and so I went to him. He immediately started writing a dozen different diagnostic tests. I told him about my deductible. He said 1. He's got patients writing blank checks and telling him to do whatever he wants, boasting about his rich patients 2. He took me inside one of the exam rooms only to tell me, and I quote, "we will take every penny that's insurance doesn't pay from you"!!!! 3. Tried to push me into paying $2500 a year so he'd answer calls sooner than other patients. To this guy, patients are waking dollars. He doesn't see patients as people. Just $$$$. Worst of all, I tried to go to another doctor in that clinic that we found out he was a good cardiologist, this guy blacked me from seeing anyone in that clinic. All and all, a horrible excuse for a human being. read more

Doctor Karlsberg is the Doctors doctor. What he and his team offer is top tier level care. I have been a patient of the Mayo Clinic and Cleveland Clinic and I can tell you the care and attention to detail with Dr. Karlsberg is very hard to find and one of the best in the country. His office has the most current technology for cardiovascular health. I'm constantly impressed with the technology and equipment used. The office also has their own blood lab + stress, Eco, cardio CT testing. This is a big convenience. You can stay in the same office and not have to run around town to get testing done at separate places. Doctor Karlsberg is connected with all the top of their specialty doctors and works with them to make sure the patient receives the best care and has the most knowledgeable person dealing with the area/issue in question. I have been going to Doctor Karlsberg since I was 19 as my primary, I have recommended him to 3 members of my family and my closest friends. All have been grateful and pleased with the recommendation. Every doctor is only as good as their staff and everyone at Doctor Karlsberg's office is amazing and probably one of the best teams in the business. From the Nurses to the schedulers - extremely professional and competent staff! If you are lucky enough to have Dr Karlsberg as your primary doctor you will receive the best care available, that's as clear as I can be. read more

Because of the current Coronavirus situation, I was hesitant about keeping my appointment for a CT and blood work on Wednesday morning with Dr. Karlsberg at the Cardiovascular Medical Group. However, the minute I stepped out of the elevator, I knew I was in safe hands. I couldn't believe my eyes when I saw of all the preparations and precautions that have been made to ensure the safety of the patients and staff. First, the entrance to the waiting room has a check in station that is monitored by a nurse, wearing a mask and gloves, who makes sure you have an appointment, asks you a few questions, checks your temperature, sanitizes your hands and offers you a mask and gloves. She then invited me into the waiting room that normally seats 25-30, and only had 3-4 people at that time, so it was very safe to wait in. Another nurse, who was wearing a mask, gloves, protective clothing and a face shield, came to take me inside. After checking my vitals and giving me an EKG, she escorted me to the CT Department. I can honestly say that the staff at the CT department is amazing and equally prepared. Since I have a pacemaker and a defibrillator, I needed to be monitored during the procedure. I was well taken care of. I then was taken to get my blood work and finally to my meeting with Dr. Karlsberg. He went over my tests and condition and was extremely and genuinely concerned with my health and safety. Everyone, everywhere, was very prepared, very professional, and made me feel very safe. I am looking forward to my next appointment on Monday to go over my results and health issues. read more

Dr Karlsberg has been my doctor for 2 1/2 years, since I arrived in BH from NYC .He is also my husbands doctor. I am truly thankful to have found the most brilliant, compassionate & kind doctor I have ever encountered. He treats his patients with respect and takes the time to know you before making any assessments. I never feel rushed & I know he will be there whenever I need his care. He answers phone calls on a timely basis. His diagnosis & recommendations are based on a total understanding of his patients expressed issues, state of the art tests, his brilliant analysis as well as his years of experience. His referrals are always to other exceptionally fine physicians. On top of it all he has a genuinely great sense of humor. I trust him with my health and well being and consider myself blessed that I found him here in BH. Last but not least his entire office staff is the absolute best! read more

Dr Karlsberg saved my life! He was able to find a and diagnose a very rare and serious disease that others couldn't. My condition is fatal unless treated and I was in bad shape. Once he found the cause he organized a team of the very best specialists (he knows all of them) and continued to quarterback and optimize my treatments. Dr Karlsberg is extensively involved in the latest research and is often a contributor. After our first meeting it was clear he was a highly skilled physician and cares deeply about his patients. I would post a 100 stars if I could because without his knowledge, compassion and decisiveness, I wouldn't be writing this. read more

He was a solid hour late coming into the room and then spent over half of the visit texting on his phone watch. Not a great experience given my husband's condition. UPDATE: Since learning of our bad experience the Dr made a HUGE effort to reconcile with us and went out of his way to be of service. I think it's important to communicate directly any grievances as the Dr may be distracted due to another emergency. read more

While I appreciate the feedback that Eddie C gave from his appointment, the safety situation with Dr. Karlsberg's office has vastly changed, and it is no longer a safe environment for patients to venture into during the Covid pandemic. We arrived yesterday to elevators that had more than one person, then stepping off the elevator with others to enter into the waiting room which was not attended to by any nurse giving temperature checks, etc. The waiting room was filled with patients, at least a dozen, with more in line to check in at the two windows which are not socially distanced apart so we were standing right next to another patient. The nurses were not prepared to check people in quickly and thoroughly, so we had to wait, uncomfortably, with others nearby. There was no social distancing. The nurses and the patients were in masks but no shields. The pens offered to sign paperwork were being passed around to others and not cleaned. They did a temperature check at the window but the first temperature check instrument didn't work so the nurse had us waiting while she went in search of another. When finally she finished checking us in which took an inordinate amount of time, and we turned to exit the waiting area, the chairs were mostly filled, and there was a line behind us of patients without a clear path to exit. We were within inches of other patients the entire time. The office seems to schedule several patients at the same time without considering that most patients are there for underlying health issues (!), and should be spaced out. There was no indication that anything was being sanitized. It was a very unsafe, uncomfortable experience. We won't be returning anytime soon. read more

Dr. Karlsberg saved my mom's life. Every doctor recommended an open heart surgery, but Dr. Karlsberg knew that she did not need anything more than the stents. I am so glad that we trusted him! She was out and about the day after the surgery without any downtime. She loves Dr. Karlsberg and his staff for not only saving her life, but for being so pleasant and caring. To this day, a month after her surgery, they are still checking up on her via telephone and in person. Phenomenal service, people and work! Wishing you all the best, Dr. Karlsberg! Best Regards, Edwin read more

Dr. Karlsberg is a great doctor and very smart. If you need a cardiologist he's the guy.

Ron Karlsberg has been my cardiologist for 30 years. I started seeing him because I had an off the charts calcium score and a family history of heart disease. He has monitored me for all this time with medication and tests as appropriate. He has always been available. Two months ago I saw him with non-specific symptoms. He ordered some tests and discovered a complete blockage of a portion of one my main arteries which was treated with a stent insertion. Had he not been monitoring me for so long and been so familiar with my situation instead of having a stent insertion I would have had a heart attack. He was available to me 24/7 during this period but this is no different than his availability and concern during any other less serious episodes I have had over the years. He is a top top doctor in every way, from his idiosyncratic and entertaining demeanor, his genuine concern, his great diagnostic instincts, his unparalleled experience, his tremendous staff, his dedication to his patients, his ahead of the curve knowledge of cardiology and his tech savvyness. And he has the best cup of coffee in town. There is no doctor I trust more with my health care. read more

I can't ever get my doctor to even take a phone call; what makes them think a doctor will immediately look at my home brew cardiac scan?

Dr. Karlsberg has been my doctor for years. He is the best! My first cardiologist discharged my from Holy Cross Hospital in June after multiple flat lines with a prescription and told me to make a follow up appointment for October. WOW, couldn't believe it. I immediately changed to Dr. Karlsberg after a referral and I have never been sorry. The meds the first guy put me on we're not working and he didn't care. Karlsberg took an active interest in my heart problems and got me on something that worked. I would recommend Dr. Karlsberg in a heartbeat (no pun intended) read more

My former cardiologist passed away on Christmas day 2012. I must admit, I felt a little insecure. I began seeing Dr. Karlsberg in early 2013. Usually, one would think that it would take time to get used to and adjust to a new doctor. Not with Dr. Karlsberg. I feel choosing him was one of the best decisions I have ever made. He is a great doctor, has a wonderful staff and, he cares. You would think that it doesn't get much better than that but it does. He has made me feel as if I will never have to worry about my health again. Why? Because he is there. He has take a closer look at my health than any doctor I have ever known. He is kind, patient and never misses any details. And, I'm not a sickly person. Nor am I an alarmist. But, when you develop a heart condition, you take things just a little more serious. I have never not heard back from him within the same day. And, I live in another state. However, I feel totally confidant that he will take charge of my care no matter where I am. Or for that matter, where ever he is. Last May, I somehow developed pneumonia. Dr. Karlsberg called me from Beijing, China to check on me. What doctor in this world would do that? Dr. Karlsberg is the only answer to that question I can think of. I have spent most of my life avoiding doctors. I have never felt very secure in trusting most doctors. I never felt like they "really" cared. It was just a business. Today, I feel totally secure, I have total confidence and I really like Dr. Karlsberg. Perhaps you could say choosing Dr. Karlberg was one of the best decisions I have ever made. No matter where I am or where he is, I know if there is a problem, he will make sure I get the best care possible. read more

I have nothing but positive things to say about Dr. Ronald Karlsberg and the Cardiovascular Medical Group staff. In addition to his cardiovascular skills, I've found Dr. Karlsberg to be a caring and compassionate physician who spends as much time as needed to discuss my specific medical issues and general health concerns. read more

Dr. Karlsberg is kind, caring and passionate about his profession. He is extremely smart and is the best cardiologist! You are in excellent hands with him. He genuinely cares about his patients and provides the best quality services. The staff is wonderful too. I will continue to see him and refer friends and family to him. read more