Jonathan Zagzag, M.D., M.P.H., FACS
Dr. Jonathan Zagzag is a board-certified endocrine surgeon with a Focused Practice Designation in Endocrine Surgery, specializing in the surgical treatment of thyroid, parathyroid, and adrenal disorders. He is one of the few surgeons on Long Island with advanced fellowship training and this national designation, reflecting his expertise and dedication to high-volume endocrine surgery.
Dr. Zagzag completed his surgical residency at NYU Langone Health and an endocrine surgery fellowship at MD Anderson Cancer Center, one of the nation’s leading programs in thyroid and parathyroid surgery.
He has extensive experience in:
- Parathyroidectomy for primary hyperparathyroidism and other parathyroid conditions
- Thyroidectomy for benign and malignant thyroid disease
- Adrenal surgery, including minimally invasive techniques
Recognized for his compassionate patient care and surgical excellence, Dr. Zagzag combines advanced techniques with clear, personalized communication. Patients consistently note his approachable style and excellent outcomes.
He is affiliated with St. Francis Hospital & Heart Center in Roslyn, NY (Catholic Health), where he provides comprehensive evaluation, surgical management, and follow-up care.
Dr. Zagzag welcomes new patients from across Long Island, Queens, and the greater New York area.