Cornerstone of Southern California, Celebrating 40 Years
Call (714) 547-5375
Phil Kosanovich, MBA
President & Chief Executive Officer

Phil has a senior leadership profile that spans from entrepreneurial ventures to global corporations. His experience includes consulting, operational, and executive-level roles in the behavioral health and addiction treatment industries that include co-founding and growing two residential and outpatient treatment centers. Phil is an inclusive and transformational leader with a reputation for building strong client/patient-centered teams focused on clinical excellence. He has an extensive record of success in leading companies through transitional periods of growth and creating and maintaining strong external partner relationships.

Phil’s expanded healthcare industry experience was with Landauer, where he started two subsidiary companies and led company operations in Australia and China. Prior to his 30 years in the healthcare industries, Phil was president of human resource and financial services related subsidiaries of Travelers, Equitable, Lincoln Financial Group, and Chicago Title & Trust. He has served on the executive board and in multiple leadership roles of a global human resources trade organization and elected into that industry groups Hall of Leaders. Phil has served on the boards of several healthcare-related charities and is the Chair of the Community Relations Commission in his hometown. Phil earned an MBA from DePaul University and a Bachelor of Science in Business Administration from Valparaiso University. He is in long term recovery.

Author’s publications

Celebrating National Recovery Month: Hope is Real. Recovery is Real.

By Phil Kosanovich, MBA on September 5, 2024
Celebrating National Recovery Month This September As September unfolds, we at Cornerstone of Southern California join millions across the nation in observing National Recovery Month. This annual celebration shines a spotlight on substance use treatment and mental health services, reminding us all that recovery is possible and that every journey toward healing is worthy of […]
Read article

The Growing Danger of Fentanyl with Xylazine & Treatment Options

By Phil Kosanovich on October 25, 2023
Fentanyl and Xylazine: The Increasing Dangers and Treatment Options In the last 10 years, the dangers of Fentanyl exposure have become increasingly more wide spread, including and especially across public platforms and social media. And though both healthcare professionals and government establishments, including the U.S. Department of Justice Drug Enforcement Administration (DEA), the Federal Drug […]
Read article

Chest Pain After Drinking Alcohol

By Phil Kosanovich on January 8, 2025
It’s not unusual to feel chest pain after drinking alcohol, especially after a night of heavy drinking. However, you should take any alcohol-related chest pain seriously, especially as chest or rib pain can indicate underlying medical conditions. Whether it’s tight chest after drinking alcohol or stabbing pain in the chest after drinking, understanding the potential […]
Read article

IOP Vs. PHP Treatments: Understanding the Key Differences

By Phil Kosanovich, MBA on January 7, 2025
When considering mental health or addiction recovery, choosing the right level of care is crucial. Partial Hospitalization Programs (PHP) and Intensive Outpatient Programs (IOP) are two effective options designed to help individuals on their recovery journey. Understanding the differences between IOP and PHP, their benefits, and which treatment program aligns with your needs can make […]
Read article

Dangers of Snorting Ativan

By Phil Kosanovich on December 18, 2024
Snorting Ativan (lorazepam) is a dangerous form of drug abuse that delivers the medication rapidly into the bloodstream, intensifying its effects and increasing the risk of severe health consequences. Why Do People Snort Ativan and Why Is It Dangerous? Snorting Ativan (lorazepam) is a dangerous method of abuse that amplifies the drug’s effects while significantly […]
Read article

The Dangers of Snorting Molly (MDMA, Ecstasy)

By Phil Kosanovich on December 18, 2024
Snorting Molly is a common method of use that significantly increases the risks of severe health complications. This dangerous practice not only damages nasal tissues but also raises the likelihood of overdose from contaminated substances like fentanyl, which can lead to fatal and severe health complications. What is MDMA? MDMA, or 3,4-methylenedioxymethamphetamine, is a synthetic […]
Read article
1 2 3 50