Lewis Jacob Frazee, M.D.


Board-certified by the American Board of Ophthalmology

Dr. Frazee founded the North Texas Eye Center in 1981. He has been taking care of patients in the Plano area for over 30 years and was voted by his peers as one of Collin County’s Best Doctors in 2011,2012, and 2013. Dr. Frazee instituted an additional clinic in Lewisville in 2003. He continues to serve his patients in both locations. Dr. Frazee completed his residency at the Northwestern Memorial Hospital in Chicago, Illinois. He earned his Master of Science degree in physiology and biophysics and his Medical Doctorate at the University of Louisville School of Medicine. He graduated with a bachelor degree in chemical engineering. Dr. Frazee is married to Paulette and they have two children, Sarah and Laura. He is a computer guru at heart and enjoys building computers and working with technology.

Ellen Ngo, M.D.

Physician and Surgeon

Board-certified by the American Board of Ophthalmology

Dr. Ngo joined North Texas Eye Center in 2015 after completing her ophthalmology residency at Harvey and Bernice Jones Eye Institute at the University of Arkansas Medical Sciences in Little Rock. During her time in Arkansas, the Eye Institute awarded her the chief resident of the year honor. Dr. Ngo earned her Medical Doctorate at Texas A&M University College of Medicine. She graduated with honors from The University of Texas at Austin with a Bachelor of Science in Human Biology with a concentration in Immunology and Pathology. She has been a member of the American Academy of Ophthalmology, American Medical Association, and Texas Medical Association. Dr. Ngo is a published author with contributions in multiple journals such as Investigative Ophthalmology and Visual Sciences, Clinical and Experimental Ophthalmology and the Canadian Journal of Ophthalmology. She has a particular interested in cataract surgery and treatment of various retinal disease. She and her husband, David, enjoy creating experiences with their two young children and two golden doodles. Her hobbies include running, traveling, and exploring nature.

Ellen Ngo, M.D. Healthgrades.com Profile

James A. Passmore, M.D.


Board-certified by the American Board of Ophthalmology

Dr. Passmore joined North Texas Eye Center in 2001. He completed his ophthalmology residency at Mayo Graduate School of Medicine in Rochester, Minnesota. Dr. Passmore earned his Medical Doctorate at Baylor College of Medicine and graduated from Oklahoma State University with a degree in physics. Dr. Passmore served as a flight surgeon and was active in the United States Army for two years before serving as a community leader in the ophthalmology field. He has been a member of the American Academy of Ophthalmology, Dallas Academy of Ophthalmology, Dallas County Medical Society and Texas Medical Association. Dr. Passmore has practiced in the Dallas area since 1975. Dr. Passmore previous trained and supervised residents in cataract surgery as Clinical Assistant Professor at UT Southwestern. He and his wife Malinda enjoy spending time with their children, grandchildren, listening to music and caring for their horses.

Amy Cao

Contact Lens Specialist

Amy joined the North Texas Eye Center in 1998. She has extensive experience in a wide array of contact lenses fittings and has a record of success even with patients who have unique needs or a challenging contact lens fitting. Amy graduated from The Medical School of Jiao Tong University, Shanghai, China in 1983. She worked for six years as a board-certified ophthalmologist in Shanghai Ruijin Hospital and Shanghai International Airport Emergency Center in China. From 1993 to 1994, she attended the University of Cincinnati School of Medicine while working as a research assistant in the DNA sequencing laboratory of the school. From 1995 to 1998, Amy worked as an optometric technician before joining the North Texas Eye Center.

Skye Johnson

Office Administrator

Skye graduated from high school with honors and attended Collin County Community College. She has been with North Texas Eye Center since 1997. Having started as a technician, Skye has learned every aspect of the business and her knowledge and commitment has resulted in her promotion to the role of Office Administrator in 2010. She is married and has two children.