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The Cornerstone Family

Cornerstone's vision is to be the employer of choice for those working in the field of alcohol and drug rehab.

Our staff is composed of a dedicated team of diverse professionals with experience and training in treating chemical dependency and related addictions. Many of our staff are in recovery, have credentials of the heart, and through personal experience, understand the recovery process. We are proud of our 90 employees and affiliates.

Over the years Cornerstone has been able to attract many of the senior Orange County medical and psychological experts in the field of addiction, as independent affiliates, to see our clients as needed for detox issues as well as medical and psychiatric problems.

Cornerstone Employs over 70 Qualified Staff

Samantha Stone Kathryn Anderson

Michael Stone, M.D., FAAFP, Board Certified in Addiction Medicine

Founder and Clinical Director, President

Dr. Stone founded Cornerstone of Southern California in 1984, when he recognized that many addicts, who needed help, could not afford hospital stays. He believes that not all addicts need to be in a hospital to get well. They can live in home-like settings and have time for social interaction and daily living skills, in addition to lectures and therapy.

Dr. Stone has treated over 60,000 addicts and their families' since 1969. He is well known and respected in the professional community. He has treated clients from all walks of life as well as celebrities and prominent business professionals from all over the world.

He graduated from Sheffield University Medical School, England in 1967. In 1969 he opened and directed the first hospital-based treatment center in Canada. He was Medical Director of Care Unit Hospital, Orange, a famous psychiatric hospital, at a time when alcoholism and drug treatment was coming out of the closet and becoming more acceptable. He and his team were asked to train the first medical director and family program director at the Betty Ford Center.

Dr. Stone is a caring professional who has committed himself to helping people with addictive diseases. Many of his patients have dual diagnoses and co-occurring disorders in addition to their addictive disease. Dr. Stone has been married for over 42 years. He is extremely proud of his 3 adult children who work full-time at Cornerstone. He enjoys the beach, loves dogs, and reads science fiction novels in his free time. His special loves are his 6 grandchildren with whom he enjoys spending time.

Some of his credentials are:

  • Board Certified in Family Medicine
  • Board Certified by the American Board of Addiction Medicine
  • Diplomat of the American Academy of Pain Management

Addiction Articles by Dr. Stone


Jessica Stone

Executive Assistant

Jessica Stone has been a quiet but integral part of Cornerstone since 1984. She has helped in many areas of the company. She was born in India, but grew up in England, where she met and married Dr. Stone in 1967.

Jessica is extremely proud of her 3 children, Simon, Samantha and Tim who work every day at Cornerstone. Mrs. Stone loves the beach especially in Hawaii where she has become a proficient body boarder. Jessica's special love is to spend time with her 6 grandchildren, attending their dance performances and music recitals. Even though Cornerstone is a huge part of her life, she has many other interests.


James Neumann, CAS, Certified Addiction Specialist

CEO and Director of Operations

James served in the US Marine Corps and began working in the field in 1993 as a resident manager and program coordinator for a program treating veterans in San Bernardino California. James has been with Cornerstone since 1998 and has extensive experience as a case manager and clinical supervisor. James has held the positions of Senior Case Manager, Outpatient Program Coordinator, Operations Manager, Senior Vice President and is the current CEO.


Samantha Stone

Samantha Stone, BS, BA., RASi

Senior Vice President of Admissions and Finance

Samantha graduated from California State University, Fullerton, with a Bachelor of Arts in Psychology and a Bachelor of Arts in Sociology. She is currently in school for her Registered Addiction Specialist (RAS) credential. She has been with Cornerstone since the beginning, in 1984. Samantha helps in all areas of running her family business. Within the past 10 years she has mainly worked in our Intake Office dealing with client admissions coordination. If you need assistance in checking your insurance benefits or learning more about Cornerstone's programs, do not hesitate to give Sam a call.

Sam, like her mom, loves all animals and currently has a cute little Pug named Buster. She loves sushi, spin class at the gym, going to the movies, and traveling. Sam is also a triathlete.


Simon A. Stone, J.D.

Senior Vice President, Safety Officer and Court Liason

Simon's primary job is Cornerstone's Safety Officer. He is a Senior Vice President of the company and is also in charge of the Environment of Care including facilities management. He addresses Continuous Quality Improvement and Management of the physical properties which includes all facets of property management striving to ensure that Cornerstone's residential facilities are always safe and comfortable for our clients, staff and visitors. Simon also assists in our Alternative Sentencing Program advocating for treatment in lieu of jail time on behalf of our clientele and in conjunction with Criminal Defense Attorneys, Public Defenders, District Attorneys, Judges and Commissioners.

He enjoys raising his 4 beautiful children, four turtles, 5 fish, one dog, one cat, one hamster, with the constant support of his wife, Kari.


Timothy Stone, BA

Vice President Recovery Homes Manager

Tim Stone has been with Cornerstone since 1999, but he has been involved much longer since he is the youngest son of Dr. Stone. He has essentially grown up with Cornerstone. He helped initially with cleaning the pools and helping with maintenance around the houses. He now runs and cares for over 20 Recovery Homes which must be in compliance with the California Department of Alcohol and Drug program regulations at all times.

Tim graduated from the University of California, Irvine with a B.A. in English.

He loves music and has been the lead singer and songwriter for a band called "The Goodkind" since 1996. He has produced many CD's of his own, and has set up a recording studio in his home where he continues to record new music. He has won song contests on Broadjam.com, has music available for download on iTunes and still plays live shows at venues like The Coach House and Galaxy Theater. He loves to surf and read science fiction/fantasy novels. He enjoys running and maybe he will go to Boston one day.


Tami K. Campbell, CAS

Residential Administrative Coordinator

Tami Campbell has been with Cornerstone since 2007. She started as a support staff for the graveyard shift. We soon knew we had a gem of a person who was capable of much more. We knew she would be a dedicated and talented Cornerstone employee, the kind of person we say "She got it."

Tami now runs the administrative part of a very busy 24 bed Detox and Primary care program. She oversees the many staff that support Cornerstone. A well run program is part of what makes us one of the best centers that treat addiction. Cornerstone has over 90 employees, most work in our Residential 24 hour program. We believe in a team approach and the important role all of our staff have on a successful outcome of treatment.

Tami's prior career must have seen the same 'it' as she started as a file clerk and soon became the Office Manager of a large Orthopedic Surgery office for 7 years. Tami was fortunate to get to be a stay at home mom for 3 years. She heard about Cornerstone from a friend she sponsors that had successfully completed the program.

Tami says, "I have been with Cornerstone of Southern California since 2007 and am honored to be part of such a wonderful company. I look forward to each day and the new challenges that arise."

When she has time she loves to read as much as possible. She also knits scarves for her family and friends

Tami is an active member of AIR(Alumni in Recovery) for over 20 years. They have monthly potlucks and activities for families in recovery. She is also the Pack Committee Chairman for her son's Cub Scout pack for the last 4 years. She has 3 sons. One of them works as support staff in our outpatient program. We really are like a family

Tami has a pet turtle named Tommy. "Tommy the Turtle."

Tami says, "I believe I have been given the opportunity to see miracles happen in the lives of others. I have been in recovery for over 21 years." Cornerstone is fortunate that Tami joined our family-style team.


Kathryn Anderson

Kathryn Anderson, RAS

Outpatient Program Coordinator

Kathyrn is a Certified Alcohol and Drug Counselor Associate.

Kathryn is an Outpatient Program Coordinator and joined Cornerstone in 2007.

Prior to coming to Cornerstone, she worked for the YMCA Born Free program, a peri-natal facility.

For fun, Kathryn enjoys attending community outreach functions and spending time with her family.

Kathryn says: "I love to work with people and this job allows me to work with people from all walks of life. I love it!"


Stephanie N. Herring, PH.D., M.A.

Alternative Sentencing Manager

Dr. Herring first came to Cornerstone in 1996, after working as a primary case manager at The Betty Ford Center. Prior to that, she worked in acute psychiatric settings at Charter Hospital in Palm Springs and CPC Santa Ana Hospital. She has also worked for the Count y of Orange, providing individual, group and family therapy with troubled children and their families. She has been in the field of Alcohol and Drug Treatment since 1991.

She received her Master of Arts in Psychology with an emphasis in Marriage and Family Therapy from Pepperdine University. She then went on to receive her Ph.D. in Psychology, where she also obtained Certificates in both treatment of victims and perpetrators of violent crimes and chemical dependency treatment. During her five year doctoral training, she conducted a research study at Cornerstone of Southern California, entitled "Cognitive Therapy with the Chemically Dependent Depressed Inpatient." This became her published dissertation. While at Cornerstone she received two years of her post-doctoral supervision from world renowned psychiatrist, Joseph Pursch.

Dr. Herring has had extensive training from the Federal Emergency Management Agency (FEMA) to provide crisis counseling to the victims of the Laguna Beach fires in 1994. She is affiliated with the American Psychological Association, Association of Marriage and Family Therapists, California Association of Marriage and FamilyTherapists and American Association of Christian Counselors. She has continued to stay up to date on the most recent cutting edge treatment strategies, attending seminars by various therapists and psychologists such as Terrence Gorski (Relapse Prevention), Dr. David Burns (Cognitive Therapy techniques) and educational seminars conducted by the APA, CAMFT and CAADAC. She is excited and enthusiastic about returning to Cornerstone after spending time at home raising her two beautiful children.


Lesley Nolen

Marketing and Outreach

Lesley's has a passion for helping others and making a difference. Becoming the Cornerstone Marketing and Outreach representative Lesley will be working to build and maintain strong relationships, relying on her networking skills and confidence in the treatment and services Cornerstone provides. Lesley's personal philosophy is, "If I take care of my character, my reputation will take care of itself," and she approaches all aspects of her career with honesty and integrity. Lesley's past hard work has been recognized - she's been the recipient of multiple honors, including the President's Club and Million Dollar Round Table. Lesley received a B.A. in Finance from Cal State University of Fullerton, and grew up in the Huntington Beach area. She also possesses a real estate license, a Series 7 and Series 66 license, and a property and casualty license. An ambassador for the Red Cross, Lesley also volunteers with Save Our Strays, an organization that works to find homes for animals. When she's not working, Lesley enjoys hiking, kayaking, and traveling. She also remains active by playing Squash.


Mary Fritz, CAS II

Senior Case Manager

Mary has been working at Cornerstone for over 13 years, since 1999. She has been a Case Manager in all of Cornerstone's programs; Detox, Inpatient, Residential and Outpatient programs. She has over 24 years of experience having worked in the field of addiction since 1989.

Mary began her career as a therapist in private practice in New Zealand. She says that most, if not all, of her clients back then had chemical dependency problems so she began training and educating herself specifically in the field addiction.

Mary says: "I enjoy watching and being a part of the positive changes in people's lives."

Mary enjoys scuba diving, and yoga. Mary is a Dive Master and a yoga teacher.


Anya Chernitskaya, CASi

Intake Specialist

Anya was born and grew up in Saint Petersburg, Russia, where she witnessed some of the worst waves of deaths due to alcoholism and drug addiction among kids and elderly that she has ever seen. When she turned nineteen, she had her first job working in the field of Human Services. Although that particular job was not related to chemical dependency, it made her realize how much she loved working in a service oriented atmosphere. After attending human services education program at Cypress college, she knew that working with people affected by chemical dependency was her calling. Working at Cornerstone has been a wonderful and rewarding experience for Anya. Anya states, "I never stop learning from the clients and it is a truly amazing feeling to watch people get sober, grow, and give back to others in recovery."


Diane Shaw, CADC II

Case Specialist

Diane Shaw has been in the field since 2006 and working for Cornerstone since 2008 She completed her studies at Inter-Coast College graduating in the top 10 of the class, went on to an Internship at Breakaway Health Service, where she worked with teens and their families .Wanting to work with adults she came to Cornerstone . Now has CADAC ll She has worked in the Inpatient setting and Monitored Program and now at intake. She is a avid reader and running has become a passion , Mother of 3 sons and grandmother of 2 Grandsons hoping to have a granddaughter soon , married to 3 alcoholics she knows the devastation of the disease on families . Lives in Huntington beach and loves the beach life There is nothing more rewarding then helping someone find freedom from their disease.


Monnaye Bernal, ACSW, RADT-1

Executive Assistant

Monnaye began working for Cornerstone in the summer of 2013 as a Case Manager after she graduated from the University of Southern California with a Master’s Degree in Social Work. Monnaye then transitioned from Case Manager to Outpatient Program Coordinator, and currently works closely with James Neumann as the Executive Assistant. Monnaye is currently registered with the state of California as an Associate Clinical Social Worker and is obtaining hours to become a Licensed Clinical Social Worker.

Prior to Cornerstone, Monnaye played college softball at both Long Beach City College and California State University, Fresno. She went on to work in the law field but felt that with her life-experience and education, she would better thrive helping people in the field of addiction. Monnaye loves her family, USC & NY Giants Football, Dodgers Baseball, tigers, going to concerts and world traveling.

Monnaye says, "I am grateful to work for such a talented and united corporation. Cornerstone is the best foundation for recovery. Our diverse team allows us to cover all bases and provide our clients with the well-rounded therapeutic care they deserve. I love what I do and I love seeing people get clean…one day at a time!"


Simona Aguilera

Office Assistant

Simona is new to the Addiction Treatment field but has experience in dealing with a loved one who came through Cornerstone’s program in August of 2016. Simona has worked as an Administrative Assistant most of her career and has run her own business since 2006 as a photographer/photo booth operator. Simona’s hobbies include event planning, her children and crafting.


Cheryl Osman

Case Manager

Cheryl Osman graduated from Virginia Commonwealth University with an MSW; earned an LCSW in 1994 in CA and worked with Dual Diagnosed patients at Harborview Hospital in San Diego and Charter Hospital. Cheryl has also worked closely with CD clients at Gerry House in Santa Ana then went back to working with Dual Diagnosed patients at Saint Joseph and Mission Hospital Inpatient and at PHP. Cheryl also loves working in the field of chemical dependency and behavioral health. She is also a proud mother of a 21 year old daughter and 19 year old son. Cornerstone is now proud to have her as a valued member of our diverse team.


Cornerstone Contracted Programs


Gold's Gym

Gold's Gym

Helping people achieve the benefits of a healthy lifestyle.

Brand New 50,000 square foot faclitiy located across the street from our Outpatient Building with state-of-the-art equipment & Cardio Cinema Movie Theater, Aerobic (group exercise) classes throughout the day;

Group cycling, Boxing ring, Zumba and Heavy Bags area

  • Individual LCD television screens, cable TV and iPod docking stations on all of the latest cardio equipment
  • Men and Women’s Eucalyptus Steam & Sauna
  • Gorgeous locker rooms
  • Outdoor pool
  • Kids Club (babysitting)*
  • Open 365 days a year
  • Yoga and Pilates

Debbie Barnett: Certified Yoga Instructor

Debbie Barnett

Certified Yoga Instructor

Debbie Barnett began practicing yoga over 30 years ago in 1979. She became certified and began teaching in 2001. She's taught yoga to residents of Cornerstone of Southern California for three years.

In 2010, Debbie received an "Outstanding Probation Volunteer" award from the Orange County Probation Department. She volunteers her time once a week teaching yoga to incarcerated male minors. The minors say it helps them manage anxiety and they sleep better.


Marlys Woods - Music Therapist

Marlys Woods, M.S., MFTi, MT-BC

Music Therapist

Marlys Woods is a Board Certified Music Therapist who has been contracting Music Therapy services throughout Orange County in different Substance Abuse Facilities and Psychiatric Hospitals for the last three, years. She has been involved in music through performing her entire life.

Marlys graduated from Chapman University in 2011 with a degree in Music Therapy and a minor in Psychology, and she recently graduated from Vanguard University with a Master's degree in Clinical Psychology. Marlys is in the process of becoming a Marriage and Family Therapist and enjoys using her knowledge of relationships, people and music to help those struggling with addiction.

Marlys brings a variety of interventions such as Active Music Making, Song Writing, and Lyric Analysis; as well as Relaxation Techniques and Art paired with music, to her sessions. Marlys has successfully used these interventions to facilitate Cornerstone clients' finding healthy coping skills as they move forward on their journey of sobriety.