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Dr. Jed Assam is a board-certified ophthalmologist and fellowship-trained retina specialist dedicated to diagnosing and treating complex retinal disease. A Sioux Falls native, he is proud to care for patients in the community that inspired his path in medicine, combining advanced surgical skills with a calm, personable approach to every visit. His expertise spans medical and surgical retina, including the use of intravitreal injections, retinal laser procedures, and minimally invasive techniques tailored to each patient’s needs. Dr. Assam completed ophthalmology residency training at the University of Texas Medical Branch, where he served as chief resident, followed by a two-year vitreoretinal surgery fellowship at the University of Texas Health Science Center in San Antonio. He earned his MD from the USD Sanford School of Medicine and a master’s degree in Human Clinical Anatomy from Creighton University, building a strong foundation for precise, anatomy-guided care. He has participated in research at the intersection of vision science and flight safety and enjoys teaching medical trainees. Outside of clinic, he spends time outdoors hunting and fishing, and he loves cooking for friends and family.

Dr. Rocío Díaz is a board-certified ophthalmologist who practices medical and surgical retina care, including vitreoretinal surgery. She evaluates and treats retinal diseases that can affect central vision, peripheral vision, and visual clarity, and she works with patients to protect vision over time. Dr. Díaz completed a fellowship in medical and surgical retina at the Truhlsen Eye Institute at the University of Nebraska Medical Center and completed ophthalmology residency training at the Hamilton Eye Institute at the University of Tennessee Health Science Center at Memphis. She earned her medical degree from the University of Panama School of Medicine. Fluent in English and Spanish, she emphasizes compassionate, effective care and partners with patients and families on a plan that fits their needs.