What can I say? Dr. Z changed my life. Maybe saved it. I started seeing her 2-3 years ago after long-COVID. She was able to quickly diagnose the PoTS I knew I had based on actual numbers and data, whereas it had been previously been dismissed as anxiety, all in my pretty little head, a medication side effect, or even MS. I was told PoTS is rare. *PoTS is not rare. Finding a doctor who will test and diagnose properly is. Dr Zand I worked on diet and lifestyle changes and eventually began medication. I am in my 40s now: I went from barely being able to stand long enough to make it thru two 6hr shifts a week, to randomly becoming an adult gymnast who actually leaps and spins on the balance beam. Like what?! I have NEVER been in better shape from my blood labs to physique. I do better at work, too! Everyone at the office from the receptionists to the medical assistants are kind and caring. You can tell they enjoy working there. There's a good energy/ good vibes throughout the office. Cannot recommend this intelligent, compassionate, and personable provider enough. *I am a healthcare provider, but have no professional association with Austin Heart or St David read more

What can I say? Dr. Z changed my life. Maybe saved it. I started seeing her 2-3 years ago after long-COVID. She was able to quickly diagnose the PoTS I knew I had based on actual numbers and data, whereas it had been previously been dismissed as anxiety, all in my pretty little head, a medication side effect, or even MS. I was told PoTS is rare. *PoTS is not rare. Finding a doctor who will test and diagnose properly is. Dr Z and I worked on diet and lifestyle changes and eventually began medication. I am in my 40s now: I went from barely being able to stand long enough to make it thru two 6hr shifts a week, to randomly becoming an adult gymnast who actually leaps and spins on the balance beam. Like what?! I have NEVER been in better shape from my blood labs to physique. I do better at work, too! Everyone at the office from the receptionists to the medical assistants are kind and caring. You can tell they enjoy working there. There's a good energy/ good vibes throughout the office. Cannot recommend this intelligent, compassionate, and personable provider enough. *I am a healthcare provider, but have no professional association with Austin Heart or St David read more

I called to get a RX ordered and medical records sent to my Primary Dr. and this was done in a very timely manner. The Lady who helped me was very courteous and helpful. read more

Easy to find. Nice office. Staff very pleasant. Waiting room pleasant. Easy to get seen. Staff explained each step and what was happening next. I felt like a person not just another billing to insurance. read more

Exceptional Cardiologist - Truly Compassionate and Professional! I was referred to Dr. Michelle Zikusoka of Austin Heart, Cedar Park (1401 Medical Parkway, Building B, Suite #300) by my primary care provider, and I am so grateful for that referral. My visit with her on November 7, 2025, was one of the best medical experiences I've ever had. From the moment she walked in, Dr. Zikusoka's warmth, professionalism, and genuine compassion were evident. She took her time to listen carefully to all my concerns -- never rushed, never dismissive -- and thoughtfully addressed each issue I raised. She explained everything clearly, making sure I fully understood my care plan. It's rare to meet a physician who combines such thorough medical expertise with such sincere empathy. Dr. Zikusoka's enthusiasm for her work and her heartfelt concern for her patients truly shine through. I left her office feeling deeply reassured and confident that I was in excellent hands. Her nurse was equally kind, attentive, and professional -- together they make a dynamic duo that embodies what patient care should be. I am very happy to have been referred to Dr. Zikusoka, and I wholeheartedly recommend her to anyone in need of a compassionate, caring, and truly listening cardiologist. read more

Dr.Carlino does not respond to any messages even for the test results he has ordered. They seem to want you to come back again and again to generate repeat business. You have to experience it to believe out how bad they are. read more

I'm surprised by the other reviews that say the staff is unfriendly and unresponsive to questions. I think they're great! they always return calls in a day or so (they are a ridiculously busy office) and they do have the mychart thing set up online so you can get your test results without waiting for a phone call. I've seen Drs. Carlino & Crimmins and they're both really reassuring and intelligent. even the nurses that come in and do your pre appointment stuff like vitals are sweet and the turnover must be low because I see the same people every time. if you need a place to get your heart checked out I highly recommend this office. read more

The doctors may or may not be fine, but the office staff is hideous. It must come down from the top, because literally nobody is friendly. They also seem to have a very hard time running an office properly. I had an appointment that had been made 3 months in advance and was switched to the nurse practitioner instead of the doctor for no reason. I will be looking elsewhere for heart care in the future. read more

While my visit was fine, their billing department is HORRIBLE. They took my driver's license to verify my name & address, never took a copay from me, but verified my insurance. 5 months later, I get a phone call from a MedCredit company saying they sent my copay to collections from my December visit. Come to find out they never changed my address when they looked at my driver's license. I never received any mail, phone call or email to let me know about my copay. Instead they just sent it to collections. If you go to Austin Heart, make sure to keep an eye on the billing situation, because they will make NO EFFORT to reach you. read more

My first visit with Dr. Carlino, I really liked the doctor. He was very informative and took his time to answer my questions. Very pleased with my visit. A few days later I ended up at ER. Called the office the next day to advise me on the next steps after my diagnosis at ER. I also left a message in mychart. Two days later, no response. I called and followed up to make sure my message reached the nurse. Another 3 days passed, no response. I called again and was able to reach the nurse. She scheduled me for echocardiogram and heart monitor. I went for my appointment to have the monitor put on. The office tells me I'm not scheduled. They are confused and trying to find someone to put the monitor on. After waiting 35 minutes I left the office. On the way back someone called me telling me they can mail the monitor. Too many red lights. I called another group and made appointment with another cardiologist. read more

I really like the doctor but... This practice cannot keep an appointment schedule. 3 weeks before a SCHEDULED appointment for my 90 year old mother they call to reschedule. This appointment was made MONTHS ago at her last appointment. It is not the first time this has happened. They wanted to schedule her out ANOTHER MONTH because they had no appointments open before that. The office manager found her an appointment with another practitioner after I insisted they get her in sooner than another month out. (Come on, she's 90!) Obviously, it doesn't matter WHEN her follow-up appointments are no matter what her doctor says. I don't have this issue with any other practice I deal with. read more

Dr. Grad is my new favorite doctor. Would definitely recommend him for your cardiologist. The best bedside manner. I didn't feel rushed at all and he did a wonderful job easing my anxiety. Thanks!!! read more

I was so nervous for my appointment not just because of Covid but just the unknown. I felt like it was clean and very safe. Only issue I had was being in waiting room with 4 others at the same time. However seats were marked for spacing and the wait wasn't long. Dr Zikusoka was quite possibly the nicest doctor I have ever encountered. Her nurse was very sweet as well. Dr Zikusoka took as much time as I needed to listen and understand my concerns. She is kind, gentle and highly knowledgeable. Explained things in a way I could understand. I just felt like she truly cared. I'm so glad to have found her. read more

I was a patient if Dr Carlino. I had seen him before getting pregnant with my third to make sure my valve function was not degraded. He claimed I would be fine trying for another baby. I was new to his practice and the area. In all my other pregnancies I had EKG's done regularly and was monitored prior to baby being born. But this guy refused to monitor my condition and they couldn't make time to see me before my scheduled c-section. I absolutely needed a EKG and Echo so another Dr at the round Rock location did it and said Dr Carlino over booked and dropped the ball. My valve function had degraded substantially and I was pre-eclamptic. Other Dr's saved my life and this office would have let me and the baby die. read more

Dr Carlino might be a fine doctor but, I didn't get a chance to find out. Their web site claims they accept new patients but, I called today(5/4) and couldn't get an appointment until mid August. If you are a new patient and want to see a doctor in less than 3 /12 months, I suggest you go elsewhere. read more

They did a great job helping my daughter when she was having palpitations. They tested her & face quick results. The staff. Explained every& helped me navigate insurance. Great experience read more

Austin Heart in Cedar Park, has a super efficient office! Staff is very helpful and courteous. Dr. Carlino made me feel extremely comfortable at my visit taking the time to explain the different aspects of heart disease, and his initial plans to get to a full diagnosis. I unfortunately have hit the bad heart gene trifecta, I was immediately at ease with Dr Carlino's knowledge and professional manner. I only wish I had met him 8 years ago, as I am confident he could have made a big difference in my mothers care. I am feeling well taken care of and confident in my new cardiologist. read more

There's a good reason why all of the reviews are 5 stars - Dr. Carlino and his staff are excellent. We have 100% confidence in Dr. Carlino's ability. He is personable and patient, and gives you all the time you need to have your questions answered. You trust him. Plus, his nurses and office staff are all respectful, friendly and accommodating. It's an all-around great practice. read more

Dr and staff were great. If I need to see a cardiologist, this is the one I would choose!!

I would highly recommend Dr. Carlino and his office if you are looking for a cardiologist. He is very compassionate, competent and very patient. You aren't just a number to him or his staff. His staff is very responsive, friendly and helpful as well. His partner is just as pleasant and caring. The experience they provide at this office makes dealing with a chronic illness much less stressful when you have this kind of care! read more

Austin Heart in Cedar Park has a wonderful and friendly staff all of whom make the patient feel welcome and cared about. Dr. Carlino does a terrific job in explaining his diagnosis and what future tests, scans or surgeries are (or may be) what he suggests be done. My visit left me feeling that I am very secure while in the care of the professionals at Austin Heart. read more

This was my first visit to a heart specialist and I am happy to say that it was a good one. Everyone in the office was very friendly and professional. Dr. Crimmins took his time in explaining everything and going over everything with me and also gave me time to ask questions, never once did I feel like I was being rushed. Yea, for Doctors like this! read more