About Us

Simpson and Mann Optometry proudly serves the Ontario, CA area with quality eye care services and a friendly staff. Dr. Mann takes great pride in offering the best vision care possible for your entire family. Whether you need to be fitted with eyeglasses or contact lenses, or you need a comprehensive eye exam, our practice utilizes the latest technology and treatments available. Our staff will take the time to answer all of your questions and explain treatment options through your entire eye care experience.

If you’re looking for quality eye care with a personal touch, give us a call and schedule your comprehensive eye exam today.

Stuart M. Mann, O.D., M.A., F.C.O.V.D

Dr. Stuart Mann comes to us with a special interest in Children’s vision care and vision therapy for adults and children. A third generation optometrist, Dr. Mann graduated from Pacific University College of Optometry. With his special interest in learning related vision problems, Dr. Mann earned his Masters of Arts in Reading from Notre Dame de Namur University.

Dr. Mann practiced for many years in Northern California. He is board certified in pediatric vision care and vision therapy by the College of Optometrists in Vision Development and has served on the Board of Directors of this organization. He is also glaucoma certified. He has been involved with the local and state optometric association, serving as president of the San Mateo County Optometric Association, president of the Bay Area Optometric Council, and serving on the board of trustees of the California Optometric Association.

In 2010, Dr. Mann came to Southern California to establish the pediatric clinic at the new College of Optometry at Western University of Health Sciences, in Pomona. After an enjoyable three years with WesternU, Dr. Mann decided it was time to return to private practice at Simpson and Mann Optometry. He brings his background in pediatric children’s care, vision therapy, and contact lens care including orthokeratology to the practice along with personalized service for children and adults.

Dr. Mann and his family are thrilled to make Southern California their home. Dr. Mann lives with his wife, Jeanine, who teaches in the College of Health Sciences at Western University of Health Sciences, and his daughter Camille.

Kristen Phifer, OD

Kristen Phifer, OD is a board certified optometrist with therapeutic and glaucoma licensure. She offers an extensive scope of practice including general eye healthcare, fitting contacts lenses, diagnosing, managing and treating various eye conditions and diseases; with a special interest in vision therapy and pediatrics. Dr. Phifer has experience in working with children and adults with learning-related vision problems, tracking and focusing issues, binocular dysfunctions, and visual perceptual deficits.

Her passion for good health and wellness show in the way she carefully listens to her patients in effort to meet their needs. Her upbeat personality and calm demeanor are welcomed by her patients.

Originally from Pasadena, CA, Dr. Phifer received her Bachelor of Science in Biology from Loyola Marymount University and her Doctor of Optometry degree grom Western University of Health and Sciences, graduating as a member of the Beta Sigma Kappa Honor Society.

During her free time, Dr. Phifer enjoys volunteering in underserved communities and is an active tutor and mentor for youth. On her days off, she looks forward to spending time with family, friends, her dog Darla, and traveling.