Dr. John R Prewett

OptometristOptometrista Principal

Dr. Prewett is the father of six and grandfather of three. He enjoys his work and all the people he meets everyday, so that is why he still has no plans for retirement.

Helping people with their vision and eye health is rewarding and enjoyable. Dr. Prewett spends his weekends with his family, woodworking and riding his Harley. He says that some of the best things in life that Jesus has given us to enjoy, are indeed, the simple pleasures.

Dr Prewett was born and raised in California. He graduated from the University of California at Berkely, School of optometry in 1981. He did post graduate Therapeutic Management of Ocular Conditions at Southern California College of Optometry in 1994 and was certified for treatment and management of glaucoma in July 2001. He also specializes in treatment of Low Vision and was a Charter Member of Contact Lens Section of AOA.

Desde 1981, El Doctor Prewett a estudo trabajo como oculista. Habra las puertas de su practica en Santa Maria en 1992. En el 2003, habrio su oficina en Grover Beach, este año cumple 26 años sirviendo la costa central. Deje que el Dr. Prewett ponga sus mas de 34 años de experiencia en practica con usted.

Lizbeth Valenzuela

Office managerGerente de oficina

Under New Management!

Liz Valenzuela began working for Dr. Prewett at the Vision Center in 2005, first as an assistant, then as a receptionist and optician.

In 2016, she began handling all insurance billing, something she loves to do! Known to everyone here as “The Insurance Lady”, she savors the victory of finally getting paid by insurance companies who had previously denied our claims. Often we will hear her announce, “I just had a billing moment in case anyone wants to know!”

She also enjoys being able to help many of our patients overcome a language barrier, explaining the complexities of the insurance world.

Liz was promoted to Office Manager in January 2019. She works directly with Dr. Prewett and our staff Supervisor, Lucy Gonzalez. Her new responsibilities include handling other doctor’s referrals, school referrals, time cards, and whatever challenges arise during the day that the doctor may need her to take care of. We want to congratulate Liz on her new role at the Vision Center of Santa Maria!

Lucinda Gonzalez

Staff SupervisorGerente de oficina

Lucy has been working for Dr. Prewett at the Vision Center since 2007 as an optician.

In 2014, she was promoted to Supervisor. Her favorite part of the job is helping patients, and she greatly enjoys the family-oriented atmosphere among the staff at the Vision Center.

Her many responsibilities include hiring new employees, making sure the office is running smoothly, and working with brand representatives, managing eyewear selection and inventory.