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Timothy Stone, BA

Tim Stone has officially worked at Cornerstone since 1999, although he has grown up within the company and it has always been a part of his life. Professionally he has also grown up inside the company, starting out as a maintenance man cleaning the pools and helping around the houses, he now runs and cares …

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Simon A. Stone, BA, JD

Alongside his duties as Senior Vice President of the company, Simon acts as Cornerstone’s Safety Officer. His main role addresses continuous quality improvement and management of the Cornerstone estate. He ensures that the property is continuously well managed and that the facilities are up-to-date, comfortable and safe for our many clients, staff, and visitors. Simon …

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Samantha Stone, BA

Samantha graduated from California State University, Fullerton, with a BA in psychology and a BA in sociology. She has been with Cornerstone since its conception in 1984. Her main role at Cornerstone has been to coordinate all of our client admissions. If you need assistance in checking your insurance benefits or learning more about Cornerstone’s …

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Jessica Stone

Since Cornerstone’s inception, Jessica Stone has been an integral component of the family business. Co-founding it in 1984 with Michael, she has tirelessly dedicated her life to the improvement of recovery outcomes for thousands of addicts. Personal life: Born in India, she grew up in the UK where she met and married Dr. Stone in …

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Our former clients say it best...

Dr. Stone, I am so grateful to your program and also your generosity. I was a hopeless addict who believed there was no way of getting clean. Thanks to my sister and Cornerstone staff, I recently took my 90 day chip in N.A. Thanks, my life has been changed.
~ Isaac C.

“This was the best foundation I could have asked for to be sober. My case manager was the Best!! She showed me your life can be exciting and sober.”
~ Tina H.

It is the truly caring staff that makes Cornerstone the best rehab I have been to. The best part was finally getting my depression medications right, after many others tried for 2 years.
~ Jim V.

Licensed and Certified by the State of California Department of Healthcare Services.​

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