Dr. Chad Lewis
Areas of Expertise
About Me
Dr. Chad York “Cy” Lewis is an ophthalmologist and clinical instructor in the Department of Ophthalmology at Stanford.  He provides comprehensive eye care for patients with a wide range of medical and surgical needs, with particular interest in how systemic health and public health factors affect vision over a lifetime. Dr. Lewis completed medical school at the Dartmouth Geisel School of Medicine, followed by internship and ophthalmology residency at the University of Iowa Hospitals and Clinics, where he trained in the full spectrum of modern diagnostic imaging and microsurgical techniques.
At Stanford, Dr. Lewis cares for patients at the Byers Eye Institute and participates in the education of residents, fellows, and medical students. He strives to create a calm, collaborative visit where questions are welcomed and treatment plans are clearly explained. His goal is to help patients understand their eye conditions, protect their sight, and make decisions that fit their health, values, and daily life.
Training

Ophthalmology
2025University of Iowa Hospitals and Clinics
Residency
Internship
2022University of Iowa Hospitals and Clinics
FellowshipMedical Doctor (MD)
2021Dartmouth Geisel School of Medicine
Medical School
Certifications & Licensure
- Licensed In
- CA, IA
- License Numbers
- A2029132, R-12259
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Dr. Chad York Lewis
Ophthalmology • Comprehensive Ophthalmologist
Ophthalmology • Comprehensive Ophthalmologist


