Reston Location - Pulmonary and Critical Care Associates & Sleep Diagnostic Center

What a relief to see a doctor who takes his time, listens, is friendly, and provides extremely helpful care. He even takes handwritten notes and was interested in medical history. The new patient coordinator was fantastic, along with other staff who helped with scheduling, assisting with the patient portal, etc. Thank you, Dr. Rennert, for providing a kind of care that is SO needed.

My first time seeing Dr. Naghshin and he is very thorough and explained what I needed before my surgery..I am grateful! He explains and makes sure you understand and cares! You never feel rushed with their offices. I highly recommend him and his team for your care.

I have been a patient of Dr. Rennert for approximately 8 years. In this time the doctor has helped me prolong my working career and life through medication therapy and education. He is kind, empathetic and knowledgeable in his field of expertise. I would gladly recommend him to all family and friends suffering from pulmonary or coronary diseases. He is truly blessed in his field. Thank you Dr. Rennert!