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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 […]
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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 […]
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Who Is IOP Best For?

By Phil Kosanovich, MBA on January 19, 2025
When considering treatment options for mental health and substance use disorders, an Intensive Outpatient Program (IOP) offers a flexible yet structured solution. But who exactly benefits most from this level of care? IOP is designed for individuals who require significant support but do not need 24/7 supervision. In this article, we’ll explore who IOP is […]
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What is an Intensive Outpatient Program (IOP)?

By Phil Kosanovich, MBA on January 17, 2025
An Intensive Outpatient Program (IOP) is a structured treatment option for individuals seeking help for mental health disorders, substance use issues, or both. Unlike inpatient care, IOPs allow participants to live at home while attending regular therapy sessions. This flexibility makes it an ideal choice for those who need substantial support but cannot commit to […]
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How to Think Positively & Be Happy When Depressed

By Phil Kosanovich, MBA on January 16, 2025
Dealing with depression can feel overwhelming, especially when faced with persistent negative thoughts. However, cultivating positive thinking and finding happiness is not only possible but can also significantly improve your overall mental health. While it takes time and effort, incorporating small, intentional strategies into your daily routine can create meaningful shifts in your mindset. In […]
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How Long Does Klonopin Stay in your System?

By Phil Kosanovich, MBA on January 16, 2025
Klonopin’s detectability in drug tests varies, ranging from 1 to 30 days after the last use. This length of detectability differs based on the individual and the type of drug test. Urine drug tests can detect Klonopin for two to four weeks after the last dose, saliva tests for five to six days, hair tests […]
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