Our Doctors

Dr. Steven Sage Hider, OD

Originally from Merced, California, Dr. Steven Sage Hider obtained his Bachelor’s Degree in Biology from UC Irvine. After completing his Doctorate of Optometry at UC Berkeley, he Joined Primary Eyecare Center in 1994 emphasizing family vision care, contact lenses and disease management.

In 2009, Dr. Hider received the “Top 20 Under 40” award from the San Luis Obispo Tribune being recognized for his community and professional involvement. He is a past president of the Kiwanis Club of Atascadero and has chaired the local Toys for Tots program for the past 13 years. Dr. Hider is active in professional organizations being a past president of the Tri-County Optometric Society and the current president-elect of the California Optometric Association. Dr. Hider lives in Atascadero with his wife, Nicole, and his two sons, Joey and Greg. Dr. Hider enjoys hiking and camping with his sons’ Boys Scout Troop, skiing and working on his 1965 Ford Mustang.

Dr. Quyen T. Immoos, OD
Dr. Quyen Immoos grew up in Southern California and joined the practice in 2004. She received her Bachelor’s Degree in Biochemistry from Occidental College, then attended UC Berkeley where she obtained her Optometry Doctorate in 2002. Her clinical studies included internships at the Livermore VA Hospital, Seymore Johnson Air Force Base in North Carolina, and the Sequoia Eye Surgery Center in Tulare.

Dr. Immoos enjoys the sense of community that living on the central coast provides. While her three daughters keep her and her husband very busy, Dr. Immoos is an active member of Quota International of San Luis Obispo, Rotary International of Atascadero, and is a frequent volunteer in her daughter’s school. In her free time, Dr. Immoos just enjoys being Mom.

Dr. Lauren Tobin Tackett, OD
Dr. Lauren Tackett was born and raised in San Francisco, California. Her husband is a native of the Central Coast, which is what brought her to the area originally. She obtained her undergraduate degree in Biology from UC Davis and her Doctorate of Optometry from UC Berkeley. She joined the practice in 2008 after completing a one-year optometric residency program at the San Francisco VA Hospital. During her residency, she honed her skills in ocular disease and low vision rehabilitation.

Dr. Tackett is a past president of the Tri-County Optometric Society. Her focus as an administrator in the practice is staff development and management. Dr. Tackett strives to create an environment of respect, appreciation and compassion towards patients and just as importantly, reciprocity, recognition and strong teamwork among the staff and doctors. She is a former competitive gymnast and enjoys swing and salsa dance. She has fun exploring local attractions with her daughter, husband and labrador on the weekends.

Dr. Charles L. Tribbey, OD
Dr. Charles Tribbey was born and raised in Peoria, Illinois. He received his Bachelor’s degree from Loyola University of Chicago. After obtaining his Doctorate in Optometry from Southern California College of Optometry, he joined an Ophthalmology/Optometry practice in Danville, Illinois. While working at the clinic, he pursued a Master’s in Business Administration at Eastern Illinois University. He returned to Southern California in 1991 and finally to the Central Coast in 1996. Dr. Tribbey joined Primary Eyecare Center in 2011.

Dr. Tribbey has been involved in the community with Lion’s Club, Leadership Danville and ECOSLO. He also served on the San Luis Obispo County Health Commission. Dr. Tribbey is a member of the Tri-County Optometric Society. In his free time, when he is not leading hikes for the Sierra Club, he can be found hiking on a trail in the County or in the Sierras. Dr. Tribbey and his wife Kathryn, who is a nurse practitioner, travel with I Care International to Mexico and Central America where they provide eyecare services to impoverished communities.

Dr. Elaine L. Cormier, OD
Dr. Elaine Cormier joined the practice in 1988 upon graduating from the Southern California College of Optometry. She is also a 1981 graduate of Cuesta College with a degree in Registered Nursing. Her education at Cuesta College provided the foundation for careers in both nursing and optometry.

She has served as president of the Tri-County Optometric Society, chaired the Cuesta College Alumnae Legacy Project and received the 2008 Cuesta College Alumna of the Year award. Dr. Cormier retired at the end of 2009. She still lives in San Luis Obispo and is very much enjoying her retirement.

Dr. Robert Y. Cheung, OD
Dr. Robert Cheung was the founding partner of Primary Eyecare Center. He began to practice in San Luis Obispo in 1975. His practice grew as he opened a second office in Atascadero, and in subsequent years, brought in a second and third partner.

Dr. Cheung played key roles in professional and community organizations, while raising three children with his wife Klara. He was a teacher to his employees and a doctor dedicated to providing up-to-date care to his patients. Dr. Cheung and Klara now enjoy retirement in the bay area where much of their family lives.