Mark Robertshaw, MD

Munir Hazbun, MD, is a board-certified pulmonologist, critical care specialist, and sleep medicine physician serving patients in Dallas, Texas. He joined Southwest Pulmonary Associates in 2008 and brings a wealth of experience and a patient-centered approach to the diagnosis and treatment of complex respiratory and sleep disorders. Originally from Santiago, Chile, Dr. Hazbun earned his medical degree from the prestigious Universidad de Chile. He completed his internship at Texas Tech Health Science Center in El Paso and went on to pursue fellowship training at Baylor College of Medicine in Houston, where he specialized in Pulmonary, Critical Care, and Sleep Medicine. Dr.

Anthony Ortegon, MD, is a board-certified pulmonologist, critical care specialist, and sleep medicine physician providing expert care to patients in Dallas, Texas. Since joining Southwest Pulmonary Associates in 2013, Dr. Ortegon has been dedicated to helping individuals manage a wide range of respiratory and sleep-related conditions with compassionate, evidence-based care. Dr. Ortegon earned his Bachelor of Arts in Biology from Swarthmore College in Pennsylvania and went on to receive his Doctor of Medicine from Temple University in Philadelphia.

Arhaanth Reddy, MD, is a board-certified pulmonologist at Southwest Pulmonary Associates in Plano, Texas. He is known for his expertise in diagnosing and treating complex respiratory conditions and for delivering evidence-based care with compassion and precision. Dr. Reddy earned his medical degree from the University of California, San Diego School of Medicine, and completed his residency in internal medicine at UT Southwestern Medical School in Dallas, Texas. He went on to complete a fellowship in pulmonary and critical care medicine at UT Southwestern, where he also earned a Master of Science in Healthcare Leadership and Management.