Dr. Daniel Joseph Haller, MD

Dr. Daniel Haller is a family medicine physician who has dedicated 47 years to caring for patients and families. He earned his medical degree from the University of Illinois at Chicago College of Medicine, building a strong foundation for his extensive career in primary care. His nearly five decades of experience have given him deep expertise in managing a wide range of health conditions across all age groups.

Dr. Haller practices at Mount Sinai South Nassau in Oceanside, New York, where he focuses on comprehensive family healthcare. He has particular experience treating serious infections, including E. coli infections and sepsis in both adult and pediatric patients. His long-standing commitment to family medicine allows him to provide continuity of care for patients throughout their lives, from routine preventive visits to managing complex medical conditions.