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Doctors & Staff

Meet the experienced and friendly doctors and staff who make Westbrook Vision Center the leading provider of vision care products and services in Peoria.

Todd R. Smith, O.D.

Dr. Smith was born at Good Samaritan Hospital in Phoenix Arizona and finished grammar school in Colorado Springs, Colorado. He graduated with honors in 1998 from the Arizona State University with a Bachelors Degree in Biology. He had several rotations while attending The Southern California College of Optometry including an ocular disease rotation at the Veterans Affairs Hospital in Amarillo Texas, Makalapa Medical Clinic in Pearl Harbor Hawaii, and the Barnet Dulaney Perkins Eye Center in Phoenix Arizona. Dr. Smith worked with Dr. Mel S. Moss in Phoenix until 2006, and currently owns and works at The Westbrook Vision Center. As of October 2018, he launched Carefree Eyecare located at Carefree Highway and North Valley Parkway as a second practice site.  His third location, Cave Creek Eyecare in Cave Creek Arizona opened in November 2021.

He is an adjunct professor at Midwestern University and teaches business management to the optometry students.  He is a member of The American Optometric Association and past President of The Arizona Optometric Association.  His forte is in specialty fit contacts for patients that suffer from corneal issues and/or refractive surgery complications.  He lives in Northwest Peoria with his wife Bethanie, son Ethan, daughter Madeline and rotten dog Gizmo.

Bethanie H. Deemer, O.D.

Dr. Deemer has been a licensed Doctor of Optometry in the state of Arizona since 2003. She grew up in Glendale Arizona, attended Apollo High School and received her Bachelors Degree from the University of Arizona. Dr. Deemer was awarded her Doctorate of Optometry from The Southern California College of Optometry. She completed internships at the Phoenix Indian Medical Center, San Diego Naval Medical Center, and the Tucson Veterans Hospital. Dr. Deemer has been a member of The Arizona Optometric Association for 17 years and is currently the Diabetes Chairwoman. She is also a longstanding member of The American Optometric Association. She and her husband opened their private practice, Westbrook Vision Center, in 2005 and now lives down the street with her husband Todd, son Ethan, daughter Madeline, and her precious little dog Gizmo.


Cindy Hum OD, FAAO

Dr. Cindy Hum is an Arizona native and attended Arizona State University where she graduated summa cum laude with a Bachelor of Science degree in Life Sciences. Dr. Hum earned her Doctor of Optometry degree from Midwestern University in 2020 where she also completed a Family Practice Residency in 2021.


As a student, Dr. Hum trained at Lawton Indian Health Hospital, Barnet Dulaney Perkins Eye Center, the Midwestern University Eye Institute, and Accent Eye Care. During her residency, Dr. Hum completed advanced training at the Eye Institute, Barnet Dulaney Perkins Eye Center, and Valleywise Comprehensive Health Center. She has clinical interests in the many different optometry specialties, including co-management in ophthalmology, ocular disease, dry eye, pediatrics, acquired brain injuries, and specialty contact lenses.


Dr. Hum splits her time between Westbrook Vision Center and Midwestern University Eye Institute where she is an adjunct professor teaching third- and fourth-year students in clinic. Dr. Hum is a member of the Beta Sigma Kappa Honor Society, American Optometric Association, Arizona Optometric Association, and the American Academy of Optometry.


In her free time, she loves to bake goodies and be an adventurous foodie, enjoy nature and travel, and spend time with her dogs.


Dr Nha Cao grew up in Texas and began her secondary education in 2009. She earned her Bachelor’s Degree of Biology with a Minor in Health from the University of Houston in Texas, and then went on to obtain her Doctor of Optometry Degree from Midwestern University in Glendale, Arizona.

Her residency experience focused on custom dry eye services and specialty contact lenses. She is certified in anterior segment laser and surgical procedures, Paragon CRT, ZenLens, and CPR. She performs refractive services, fits contact lenses, aids in the care of glaucoma, dry eye syndrome, and macular degeneration, among other medical eye conditions. She is also bilingual; fluent in both English and Vietnamese. In 2019, Dr. Cao won the GPLI Excellence Award. She is best known for her laid back, yet professional demeanor, and quick wit.