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John Sullivan, MD, is a board-certified ophthalmologist with vast experience in cataract, reconstructive, cosmetic and plastic surgery. He holds a clinical professor faculty appointment in the ophthalmology department at University of California-San Francisco where he shares teaching responsibilities training ophthalmology residents and oculoplastic fellows.

Dr. Sullivan graduated from the University of Notre Dame and earned his medical degree at Georgetown University. After completing his medical internship at Ohio State University, Dr. Sullivan served two years as a flight surgeon in the U.S. Army Medical Corps. He specialized in ophthalmology at the University of California, San Francisco, completing a rigorous fellowship at St. John’s Ophthalmic Hospital in Jerusalem. He was awarded a Fulbright scholarship to study at Melbourne University in Australia and completed an additional year of fellowship training in oculoplastic surgery at UCSF.

Dr. Sullivan has authored more than two dozen publications in journals and textbooks and is the recipient of the American Academy of Ophthalmology Honor Award. He also serves as an examiner for the American Board of Ophthalmology.

A native of Santa Rosa, California, Dr. Sullivan has had a front row seat to the amazing evolution of beautiful San Jose as it has come to represent the heart of Silicon Valley. He joined Eye Medical Clinic in 1973 and has been privileged to see the practice grow and to serve generations of families in the area.

Christina Nguyen Deane, OD, is a therapeutic optometrist at Eye Medical Clinic with special interest in specialty contact lenses for patients with keratoconus, eye trauma, corneal transplants and irregular corneas. She also specializes in cosmetic and multifocal contact lenses.

Before joining Eye Medical Clinic in 1995, Dr. Deane served as a lieutenant in the U.S. Navy Medical Service Corps. After two years, she relocated with her family to Austin, Texas, where she built a thriving optometric practice. Upon returning to San Jose, she returned to the Eye Medical Clinic family in 2004.

Dr. Deane has a strong interest in contact lenses. She is an expert in fitting specialty contact lenses for patients with challenging medical issues including keratoconus, trauma, corneal transplants and irregular corneas. In addition to contact lens fittings, Dr. Deane provides comprehensive eye examinations and is licensed to diagnose and treat primary care eye conditions.

Dr. Deane stays current in all areas related to optometric care and the latest technology in contact lens materials and designs. She loves helping her patients achieve their personal best vision.

Dr. Deane is also fluent in Vietnamese.

Jeanie Paik, MD earned her undergraduate degree from the University of Southern California in Biological Sciences and International Relations. She received her Medical Doctorate from the University of Chicago Pritzker School of Medicine. She performed her residency at New York Eye and Ear Infirmary in New York, NY. She then completed additional training with a cornea, refractive and external disease fellowship at Emory University in Atlanta, GA.

Dr. Paik specializes in disease of the cornea and anterior segment. She is an experienced cornea transplant surgeon with specialized expertise in keratoconus, corneal dystrophies, pterygium and corneal infections. She performs a variety of cornea transplants including ultra-thin DSAEK and DMEK. Dr. Paik is trained in cross-linking, an advanced treatment to help stop the progression of keratoconus. She specializes in premium cataract surgery including multifocal and toric lenses. She is also a dry eye specialist.

As a board-certified, fellowship-trained cornea specialist and eye surgeon, Dr. Paik performs everything from modern cataract surgery to complex cornea transplants. Her favorite part of her work is the opportunity for patient connection. “Vision is so important for quality of life,” said Dr. Paik. “I enjoy developing relationships with my patients and caring for them over time.”

Dr. Paik has presented at numerous national conferences and has published in the journal Cornea. She has also published on allergic conjunctivitis. Her research includes topics such as keratoconus, corneal surgical techniques and corneal infections. Dr. Paik is a member of the American Academy of Ophthalmology, American Society of Cornea and Refractive Surgery and the Cornea Society.

Outside of work, Dr. Paik and her husband, a data engineer, are parents to their young daughter and enjoy spending time with family.


Tamer Hadi, MD joined the Eye Medical Clinic of Santa Clara Valley after completing his Retina Fellowship at the Gavin Herbert Eye Institute (GHEI) at the University of California, Irvine. From 2018 – 2020, he also served as a Clinical Instructor and Staff Physician at the VA Medical Center in Long Beach, CA, where he supervised both Ophthalmology residents and medical students. In his final year in Southern California, he was awarded the Resident teaching award given for outstanding dedication to trainee education.

Dr. Hadi earned his combined MD-PhD from the Medical College of Virginia and went on to complete his Ophthalmology Residency at Case Western Reserve University. There, he served as Chief Surgical Resident and was honored, upon graduation, as Resident of the year.

Determined to expand his skillset, Dr. Hadi then pursued fellowship training in Diseases of the Vitreous and Retina at GHEI, gaining broad medical and surgical expertise while helping the most at-risk patients.

His clinical areas of interest include age-related macular degeneration, diabetic retinopathy, vein occlusion, retinal detachment repair, surgery for macular pathology including epiretinal membrane and macular holes, and management of complex cataracts and secondary intraocular lenses. He has been actively involved in both basic science and clinical research over the years and his work has been published in diverse scientific journals. He is Board Eligible by the American Board of Ophthalmology.

Dr. Hadi is a board-certified ophthalmologist, is a member of the American Academy of Ophthalmology (AAO), the American Society of Retina Specialists (ASRS), and the Association for Research in Vision and Ophthalmology (ARVO). Dr. Hadi loves being a doctor and a surgeon. He especially enjoys interacting with patients and helping to preserve and restore vision to help his patients live happier, healthier lives.

Outside of work, he is a husband and father to three young children, and enjoys hiking and spending time at the beach with his family. Together, they love sports of all kinds and working on their family vegetable garden.

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