Leadership Team



Terren S. Peizer

Founder, Chairman of the Board
and Chief Executive Officer

Terren S. Peizer

Founder, Chairman of the Board
and Chief Executive Officer
Executive Team Leader

Terren is an entrepreneur, investor, and financier with a special interest in healthcare. He is the founder of Catasys, Inc. and he has served as the Company’s Chairman of the Board of Directors and CEO since the company’s inception in 2004. To learn more about Terren, click here.

Rick Anderson

President and Chief Operating Officer

Rick Anderson

President and Chief Operating Officer
Executive Team Member

Rick is responsible for overall commercial operations, including customer and member experiences. He joined the company in 2005. Rick has spent 20 years in senior healthcare operating and financial roles, with prior experience in finance and mergers and acquisitions for technology, healthcare and entertainment companies.

Omar Manejwala, MD

Chief Medical Officer

Omar Manejwala, MD

Chief Medical Officer
Executive Team Member

Omar leads clinical affairs and new product development efforts. He joined Catasys in 2011 and is one of the nation’s leading experts on addiction and behavioral health.

Christopher L. Shirley

Chief Financial Officer

Christopher L. Shirley

Chief Financial Officer
Executive Team Member

Christopher joined Catasys in 2017 to lead the Finance and Human Resource functions of the company. He has extensive financial leadership experience in both private and public company environments.

Jeremiah Stone

Chief Technology Officer

Jeremiah Stone

Chief Technology Officer
Executive Team Member

Jeremiah is responsible for the strategic direction and evolution of Catasys’ technology operations, including the predictive analytics and digital technology behind the Catasys OnTrak program. He joined Catasys in 2018 and has extensive digital innovation and operations experience across multiple industries and domain areas.

Barbara "Be" Stark

Senior Vice President and Head, Business Development/Client Partnerships

Barbara "Be" Stark

Senior Vice President and Head, Business Development/Client Partnerships
Executive Team Member

Be leads our teams focused on development of new and existing client relationships. She joined Catasys in 2014, and has 30 years of experience leading high growth teams for health care organizations offering value-based solutions to managed care, employers and providers.

Michelle Buysse, RN, BSN

Vice President, Member Relationships

Michelle Buysse, RN, BSN

Vice President, Member Relationships
Executive Team Member

Michelle leads the teams responsible for member outreach, engagement, treatment and success. Michelle has been with Catasys since 2016 and has extensive experience leveraging deep analytic insights, digital technology tools and human intervention to deliver innovative clinical programs across the continuum of chronic disease care and prevention.

W. Gregory McLane

Chief Marketing and Strategy Officer

W. Gregory McLane

Chief Marketing and Strategy Officer

Greg is responsible for the overall Marketing, Strategy and Medical Economics at Catasys. He joined the company in 2008 after running business units at major global enterprises and founding four companies.

Peter M. Bearse, Ph.D.

Chief Data Scientist and SVP

Peter M. Bearse, Ph.D.

Chief Data Scientist and SVP

Hands-on player and leader of the team developing algorithms to identify, engage, retain, and treat OnTrak members. Pete has an extensive background in machine learning and statistical modeling as a professor and in the private sector.

Susan Etzel

Senior Vice President, Finance

Susan Etzel

Senior Vice President, Finance

Susan is responsible for financial planning, reporting and risk management. She joined Catasys in 2008 and has extensive accounting and financial experience from both private and public companies.

Cathy Finley

Vice President, Marketing

Cathy Finley

Vice President, Marketing

Cathy is responsible for marketing. She joined Catasys in 2015 and has extensive marketing leadership experience in technology start-ups and consumer packaged goods.

Josh Fischer

Vice President, Operations and Compliance

Josh Fischer

Vice President, Operations and Compliance

Josh is responsible for core operational functions within the organization. His primary responsibilities include oversight of the company Compliance program. He joined Catasys in 2015 and his experience includes working directly with government programs, healthcare compliance, and leading cross-functional teams for both private and public healthcare organizations and plans.

Karen Hjerleid

Vice President, Client Partnerships

Karen Hjerleid

Vice President, Client Partnerships

Karen builds collaborative relationships with our client partners to maximize the value that Catasys delivers to their organizations, and she fosters joint thought partnership for future innovation. Karen joined Catasys in 2017, bringing with her deep experience in business development, organizational collaboration and team leadership in organizations ranging from Fortune 400 companies to start-ups.

Greg Mellstrom

Vice President, Strategic Analytics & Reporting

Greg Mellstrom

Vice President, Strategic Analytics & Reporting

Greg is responsible for strategic analysis, business analytics, and reporting. He joined Catasys in 2018 and has extensive strategic, analytical, reporting, and consulting experience in private and public sector companies.

Kim Moore

Vice President, Provider Network Management

Kim Moore

Vice President, Provider Network Management

Kim is responsible for provider network management, network development, and network relations. She joined Catasys in 2018 and has 20+ years’ experience in provider contracting, network relations, and network strategy from both payer and provider organizations.

Tamir Oren

Vice President, Product

Tamir Oren

Vice President, Product

Tamir is responsible for understanding customer and member needs and behaviors, and translating them to our digital platform. He joined Catasys in 2016 and has extensive experience delivering value across the continuum of care.

Tanya Ozkan

Vice President, Strategic Initiatives

Tanya Ozkan

Vice President, Strategic Initiatives

Tanya is responsible for all new partner and existing implementations/on-boarding as well as company-wide cross-functional projects. She joined Catasys in 2017 and has extensive experience in complex program and project management, operations and network management with health plan managed care and benefit management companies.

Charles Polatsek

Vice President, Sales

Charles Polatsek

Vice President, Sales

Chuck is responsible for health plan sales and expansion. He joined Catasys in 2010, with experience in clinical & services sales to health plans and hospitals.