About Dr. Daniel Montellese, MD, FACC

Heart Associates of Long Island (HALI) is a practice of Stony Brook Community Medical, PC. At HALI, you are at the heart of everything we do. We are specialists in cardiac catheterization and offer a full-service approach to your cardiac care. This includes special programs within our practice like our Heart Function Center, to help better understand and manage your various cardiac health needs.

Medical Disclaimer: The information on this website is for general informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

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Patient Reviews

Patient

★★★★★

As a physician myself, I have high expectations when it comes to medical care, and I was truly impressed by Dr. Montellese. From the moment I walked into the office, he treated me not just as a patient, but as a person. He took the time to listen carefully, explained everything clearly, and showed genuine empathy throughout our visit. Dr. Montellese combines deep clinical knowledge with a warm, caring approach that immediately puts you at ease. It's rare to find a physician who is both exceptionally skilled and genuinely compassionate. I left the appointment feeling heard, reassured, and confident in his care. I would highly recommend Dr. Montellese to anyone seeking a cardiologist.

Patient

★★★★★

Dr Montellese was very thorough and took his time in reviewing my past test results and explaining the care I would be receiving moving forward as my new cardiologist. The office staff was friendly and very efficient.

Patient

★★★★★

Office staff and medical assistant were very friendly and professional. Dr. Montellese was also very professional and friendly. Took the time for me to explain my concerns. Also took the time to explain certain things in depth. I did not feel rushed, etc.

Patient

★★★★★

Professionalism, dedication and kindness are just a few of Dr. Montellese's qualities. I would highly recommend him to anyone who needs a great cardiologist.

Patient

★★★★★

Dr. Montellese was thorough, personable, and called me with test results just hours later to ease my worries. Staff was efficient and courteous, no wait.

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