Operations Team


Cornerstone’s Operations Team

Cornerstone’s Operations Team works each day to ensure that our clients are safe, comfortable, and fully capable of focusing on their treatment. Each member of our operations team is professional and caring, always putting our clients’ needs first.

Sead Hasic

Director of Clinical Outreach

Sead began his recovery journey in August 2014. Shortly after, he started his career in the recovery field. Sead became a resident manager at a non-profit organization in the valley that helped hundreds of men and women daily. Sead then took his experience to Calvary Healing Center, where he continued his mission of helping others.

Veronica Frash

Administrative Director

Veronica began her recovery journey in 2012. After moving down to the valley, her career path changed from hospitality to healthcare. Veronica is driven to help those in recovery with love and compassion built from the recovery community and her hospitality upbringing. She hopes to lend a hand in the much-needed continuum of care for those suffering from Substance Use Disorder, Alcoholism, and Co-occurring disorders.

Dayna Kwon

Inpatient Operations Manager

Dayna thought she was coming to Arizona for just 30 days of treatment in April 2018 and has built her new life here. Dayna has been working in the recovery field since 2019, providing sober living and aftercare for those struggling with substance use disorders. She came onboard with Cornerstone in 2021, hoping to learn and grow with us while being a part of making a difference in people’s lives.

Mariah Schulte

Outpatient Operations Manager

Mariah has been sober since 2020 and with Cornerstone Healing Center since 2021. Starting as a housing technician, her passion for helping others grew. Moving into her new role, she hopes that her experience can benefit others. She is very passionate about seeing people transform through a spiritual experience.

Dane Perikly

DUI Operations Manager

Growing up in Phoenix, Dane began his recovery journey in 2016 and moved into the treatment field in late 2017, working as a call representative. Since then, he has worked in various roles at an outpatient level, both in client care and business, before landing in operations with Cornerstone in 2020. With his belief that peace comes from within, he hopes to use his skill set to provide a structured and calm space to give those struggling with substance abuse the ability to grow and learn.

Cole Armstrong

Admissions Manager

Cole was born and raised in sunny south Florida, only to start his life of recovery here in Scottsdale back in November 2018. Since then, he has traveled this road of helping others find recovery and began working at Cornerstone in January 2020. As an alumni of the program, he hopes to share and give back the love and understanding of life that Cornerstone once gave him.

Tom Higgins


Tom grew up in Central New York but traded snow for sunshine and moved to Scottsdale, AZ in 2017. After finding Cornerstone in April 2019 and beginning a life of recovery for himself, Tom has worked hard to help others discover their pathway to recovery. Starting in October 2020, Tom began working as the Navigator at Cornerstone, guiding clients through the formative first year of sobriety.

Torry Yonker

Chef & Fitness Professional

Torry is a NASM-certified personal trainer. He was born and raised in Phoenix, Arizona and began his recovery journey at Cornerstone in August 2019. He also owns and operates a meal preparation company to help his clients make better nutritional decisions. Torry entered the fitness industry because “Fitness has been instrumental in my life. It’s helped me find confidence, discipline, and a healthy outlet. All of which I lacked in my addiction. I want others to have that experience. I want to help people be the best version of themselves”.

Still have questions about treatment?

Our admissions specialists are here to explain the process, answer any questions you may have, and ensure you’re getting the help you need to live a healthy life free from addiction.

Get Started

Call and speak with one of our caring team members about help for you or a loved one.