clayton ketchum
Chief Executive Officer

Our CEO, Mr. Clayton Ketchum, is creator of Thrive Treatment LLC. Clayton is a Los Angeles, California native. He grew up in a very loving home by an exceptionally loving mother (who is a professional singer with The Los Angeles Master Chorale). Since his early childhood, Clayton Ketchum was encouraged to attend higher education as modeled by his lineage of Ivy League relatives. His skill as a football player earned him a scholarship to Southwestern Oklahoma State University where he also studied business management. Away from home and under the rigorous demands of school and football, Clayton fell into the grips of substance addiction despite being afforded many opportunities from his loving family. His addiction spiraled out of control and he and his family endured several painful years of uncertainty, frustration and fear.

After many different attempts, and many different programs, Clayton achieved long-term/permanent sobriety. During his experiences with some of these treatment centers and sober livings, Clayton began to notice what methodologies were most effective for him, and for his peers, who were also battling drug addiction alongside him.

In 2010, with very little means, Clayton created a recovery home in Los Angeles. It quickly became a success within the local addiction community for his effective approach, and today remains one of the most respected programs in Los Angeles. It was then that Clayton found his purpose and reason for getting up in the morning.

Later, Clayton began to notice something lacking in the treatment culture. He noted there were many different treatment programs to choose from, but not a lot that shared the same qualities he recognized were necessary for success, including an emphasis on values, accountability, life skills, and having fun in recovery. These are the key ingredients to Thrive.

While Clayton continues to raise the standard of care for clients suffering from drugs and alcohol abuse, his big heart is also often most demonstrated with his second passion: rescuing at-risk dogs. He has two personal rescues, Winston and Lenny while Seamus, Oliver and Carl (whom Clayton recently found malnourished wandering the streets) are the most beloved house-mates at his recovery homes.

ariana gravanis
Program Director

Ariana Gravanis, an LA native, moved to New York City to study at Touro College. She then went on to receive her Masters in Mental Health Counseling at Baruch College, CUNY. Her practicum was at Children of Promise, NYC where she worked with children of incarcerated parents in an after school clinic. She continued on with a traineeship at Counseling in Schools where she worked with at-risk adolescents at a middle school in Bushwick, Brooklyn. There she ran individual and group sessions using behavioral therapy techniques, focusing on emotional regulation and self esteem.

Ariana moved back to Los Angeles since she missed the beautiful weather and to spend more time with family. She joined Counseling Center of Santa Monica, working with individuals trying to rebuild their lives while coping with difficult medical conditions and mental ailments. Ariana also spent time working at The Los Angeles Jewish Home as a social worker, with residents suffering from Dementia and offering emotional support to their families. Ariana has training in Trauma Focused CBT and is interested in specializing in trauma and grief therapy. When Ariana isn’t seeing clients at Thrive you can find her playing with her puppy, Charlotte.

Ariana is licensed as a Professional Clinical Counselor with the Board of Behavioral Science.

kristie moore tovar
Nutrition Counselor

Kristie Moore Tovar MS RDN specializes in treating eating disorders and is dedicated to helping her clients succeed by using an intuitive eating and mindfulness approach to nutrition counseling and education. Kristie works directly with clients to create an individualized treatment plan that will empower them with confidence and knowledge so that they can reach their personal nutrition goals. Additionally, Mrs. Tovar is a certified yoga instructor (Ryt – 200) with Yoga Alliance and believes that mindful movement can aide in the healing process.

john steele
Director of Operations

John Steele brings a wealth of knowledge and personal experience to the Thrive Treatment team.  He comes to Thrive with a background in management, most recently from the management team of the High Gains Project, in Santa Monica.  He has created and developed working relationships with local courts, and advocated for the treatment of clients suffering the consequences of their  drinking and/or using problem.

John maintains the intake of clients at Thrive Treatment, including state, health inspections, and licensing. He works closely with the Executive Team in handling daily operations.

John is an active member of the recovery community and uses his personal background and experience to help create a trusting environment for our clients. John is originally from Baltimore, Maryland, but is enjoying making Los Angeles his home. John likes to spend his free time outdoors, hiking, biking and working out.


chris kirby
Director of Admissions

Chris Kirby now oversees our marketing department and is a big advocate for our program. He demonstrates strength of character and a peer understanding so clients often confide in him regarding problems or concerns. In his earlier years, Chris played water polo and attended Whittier College. Chris loves surfing and enjoys incorporating that and outside service work with clients and friends.

david pavia lcsw
Clinical Director

David Pavia, a licensed clinical social worker, joins Thrive Treatment as Clinical Director. Pavia has 15 years of experience working with both substance abuse and mental health disorders in New York and Los Angeles. Prior to joining Thrive Treatment, Pavia worked as a primary clinician at Promise’s renowned young adult treatment program and most recently as lead clinician at The Control Center, an addiction treatment program in Beverly Hills. In addition, David has worked as primary therapist and music director at Sober College in Woodland Hills, California. He earned his Masters degree at New York University and began his career working with adolescents affected by 9/11 at The World Trade Center Healing Services in Lower Manhattan. When he is not working Pavia is battling the 405 listening to way too loud classic rock in his hilariously tiny electric car. He’s got two young kids that will grow up to be embarrassed by this.

In his role as Clinical Director, Pavia will oversee the day-to-day clinicalcare of Thrive Treatment’s clients and implement an evidenced-based,clinically-sound treatment program that addresses all areas of a client’s success in achieving personal recovery and beyond. He will work closely with our clinicians, to innovate unique approaches for delivering quality, compassionate treatment care. Pavia will also work closely with Thrive Treatment’s Chief Executive Officer, Clayton Ketchum, who will oversee Thrive Treatment’s Recovery Advocate and F.U.N. ( Families United @ Night) programs.

Samantha Levy LMFT
Primary Therapist

Samantha Levy is a Licensed Marriage and Family Therapist Intern. Samantha is a graduate of Antioch University Los Angeles where she earned her Masters degree in Clinical Psychology.  Samantha’s goal when working with any population is always to create a safe space where one can find a sense of ease in opening up and sharing their truth. Samantha’s core belief centers upon connection with both self and others as the key to lead us toward a healthier, happier life.

Samantha has had the privilege of working with many different populations during her time in this field. She spent time as a counselor at a dual diagnosis treatment center for adults, completed a traineeship at San Fernando Valley Community Mental Health Clinic, where Samantha served as a therapist for elder adults from low-income backgrounds, and she spent nearly two years as a counselor at Clearview Women’s Center, where Samantha worked with females (ages 18 and up) diagnosed with borderline personality disorder and more recently held  a position as a therapist at Paradigm Malibu, where she worked with adolescents struggling with anxiety, depression and substance abuse.

margot rothstein

Margot Rothstein is a registered Associate Marriage and Family Therapist. Originally from St. Louis, Missouri, Margot received her Master of Marriage and Family Therapy from the University of Southern California. As a therapist, Margot works to help her clients explore the entirety of who they are as a person. She believes that everyone deserves the time and space to understand where they come from, how their experiences impact their present, and how they can move forward in life in a way that makes sense for them.

As an MFT Trainee, Margot worked with clients, ages 18-65, as an individual, family and group therapist at Beit T’Shuvah, a residential treatment facility in Culver City, California. There, she received training in 12-Step, spiritual and psychotherapeutic modes of recovery as well as additional training in process addictions, group therapy, trauma and eating disorders. She looks forward to bringing her knowledge of the recovery process and her ability to develop strong, supportive relationships with her clients to her new position as a primary therapist at Thrive Treatment.

Outside of work, Margot enjoys the best LA has to offer – going to movies, searching for incredible food, enjoying weather that can’t be beat, and watching all 162 Dodgers games with her baseball obsessed husband. She sort of wishes she were kidding about the last one.

evan nicol
Lead Counselor

Evan Nicol carries a strong emphasis on the balance of personal recovery, accountability, responsibility and having fun. Today with nearly five years sober, Evan has established a life beyond his imagination and at the top of the list is using his substance abuse counseling education and personal experience to help others in building a life free from the depths of addiction.

claire godden
Office Manager

Claire Godden brings to Thrive more than 15 years professional administrative experience from a variety of backgrounds. Claire has worked in television, hospitality, and marketing but her real
passion is healthcare. Claire graduated CSU Channel Islands in Camarillo, CA, with a BA in Psychology with highest honors. Prior to Thrive, Claire worked for an outpatient narcotic
treatment center and a residential rehabilitation center. Claire is a native of London, England, and has lived the last 20 years in the Greater Los Angeles area. She has two teenagers and a
“zoo” at home that includes 3 dogs, 2 cats and her daughters reptile collection… When she has free time, she enjoys being with family and friends, spending time by the ocean, creating art,
and gardening.

dr ryan peterson md
Medical Director

Dr Ryan Peterson is board certified in the specialties of Addiction Medicine, Anesthesiology, and Pain Medicine. He graduated from The George Washington University School of Medicine and did residency and fellowship at Weill Medical College of Cornell University and UCLA School of Medicine, respectively. Dr. Peterson has a long track record and vast experience in successfully alleviating chronic pain caused by various medical conditions and believes with empathy and truly caring for a patient, the greatest healing happens. Because of his personal experience, Dr. Peterson became interested in treating those suffering from chemical dependence, and broadened his practice accordingly in 2014. Dr. Peterson believes in a multidisciplinary approach to pain management and a bio-psycho-social-spiritual approach to addiction treatment. Dr. Peterson is Medical Director at Thrive Treatment.

dr james luzano
Addiction Psychiatrist

Dr James Luzano has a background in working with a multitude of mental health illnesses and chemical addictions. He is a consultant to several reputable drug and alcohol treatment centers in Los Angeles and works as an attending psychiatrist at Olive View-UCLA Medical Center. With his work and training at Cedars-Sinai, UCLA, and the Veterans Affairs medical centers, he has extensive and diverse training and experience in state-of-the-art mental health and addiction treatment.

Through his experience in therapy, Dr. Luzano’s approach promotes empathy, understanding cognitive-behavioral processes, psychodynamics, and motivation for change. He has applied these in PTSD and other anxiety, depressive and mood disorders.

Dr James Luzano is a graduate of Columbia University and completed medical school at the University of Medicine and Dentistry of New Jersey. He is board-certified in General and Addiction Psychiatry. He completed Psychiatry Residency at the UCLA-San Fernando Valley Program and completed an Addiction Psychiatry Fellowship at Cedars-Sinai Medical Center.

david wiss

David Wiss, MS, RDN is the founder of Nutrition in Recovery, which specializes in: Addictions, Eating Disorders, Mental Health, Body Image, and General Wellness. Mr. Wiss works closely with individuals to help them revolutionize their relationship with food, and has shared his expertise with numerous eating disorder and addiction facilities throughout the greater Los Angeles area. David is a nationally recognized expert in nutrition for addiction, and is currently working on his PhD in Public Health from UCLA.