Expertise | Leadership

Leadership Team

CDI Management Corp. is the management company for RAYUS Radiology (RAYUS), Insight Imaging, and our respective affiliated partners. Through the national management, local operations and clinical teams, we focus on providing efficient operations and clinical best practices to ensure quality patient care and customer service for the clinicians and patients we serve.

We understand our business, industry and our customers’ needs, and having a centralized team allows us to do what we do best every day. Our RAYUS corporate management team is located in Minneapolis, MN with various operations, IT and revenue cycle management functions located in Lake Forest, CA; Wexford, PA; and Buffalo, NY.

  • Kim Tzoumakas, Chief Executive Officer
    Kim Tzoumakas

    As CEO, Kim leads the country’s largest privately owned diagnostic imaging provider, overseeing a national network of imaging centers, ambulatory surgery centers, and mobile imaging solutions.

    Prior to joining RAYUS, Kim served as CEO of 21st Century Oncology (21CO), one of the largest integrated cancer care networks in the world with 347 locations in the U.S. and several Latin American Countries. At 21CO, she successfully partnered with the company’s team of more than 1,000 physicians and 3,000 employees to accelerate growth through best-in-class clinical delivery and patient satisfaction.

    Kim has more than 20 years of health care leadership ranging from strategic planning and growth to physician relationships and key strategic partnerships. She has provided strategic, transactional and governance advice to health care clients throughout the United States including serving as an advisor to several non-profit and for-profit boards.

  • Ryan Raschke, Chief Financial Officer

    Ryan joined RAYUS in 1998 as a financial analyst and has held various positions in the Accounting, Finance, and Treasury areas of the company. In his most recent role leading our Treasury organization, Ryan has played a key role in managing and maintaining RAYUS’s strong balance sheet and capital structure. In 2015, Ryan led the process of restructuring our debt financing, which allows us to have lower cost of borrowing to maintain our existing infrastructure and to fund our future growth projects.

    As Chief Financial Officer, Ryan provides leadership and oversight for the accounting, financial planning and analysis, internal audit and treasury/cash management departments. He holds an M.B.A. from the University of St. Thomas and a B.S. from Iowa State University.

  • Glenn Galloway, Chief Information Officer

    Glenn Galloway joined RAYUS in 2017 as chief information officer. Before coming to RAYUS, Glenn served as chief executive officer for Children’s Health Network.

    Glenn has more than thirty years of experience in health care IT including serving as senior vice president with Optum UHG, chief information officer at Children’s Minnesota, and co-founder of Healthia Consulting Inc. Glenn received his Bachelors of Science in Business Computer Science from Iowa State University.

  • Amy Garrigues, Chief Administrative Officer
    Headshot for Amy Garrigues, Chief Administrative Officer at CDI.

    Amy Garrigues serves as the Chief Administrative Officer of RAYUS.  In this capacity, Amy leads and provides strategic oversight and direction to RAYUS’s managed care, research, technology, facilities, procurement, legal, compliance, management services, and marketing departments.  Amy has more than 15 years of experience advising health care companies and Board of Directors on strategic and growth initiatives.  Prior to joining RAYUS, Amy was the Executive Vice President and Chief Legal Officer for 21st Century Oncology, overseeing its operational and strategic transformation.  Amy has also previously served as a health care partner with King & Spalding LLP and as a health care strategy consultant with The Boston Consulting Group.  She holds an A.B. from Harvard College and a J.D. from Harvard Law School.

  • Christopher “Kit” Crancer, Vice President, Public Policy

    As the Vice President of Public Policy, Christopher “Kit” Crancer is responsible for leading policy strategies at the national and state levels that enhance RAYUS’s commitment to providing quality care and services to patients and clinicians. He joined RAYUS in 2015 as the organization’s Director of State Legislative Policy, and has since developed extensive policy knowledge in the imaging industry. He’s been instrumental in lobbying for countless pieces of health care legislation that allows RAYUS to continue delivering high-quality imaging services across the country.

    Additionally, Kit also serves as the Executive Director of the CDI Quality Institute, where he oversees and implements programs and initiatives that benefit clinicians and patients in our local communities.

  • Per Normark, General Counsel

    Per Normark leads RAYUS’s legal, compliance and risk management teams. He is a seasoned health care attorney with more than 30 years of experience. Prior to joining RAYUS, Per served as the vice president, general counsel and compliance officer of MedQuest Associates, Inc. He was also the Assistant Attorney General for the state of Georgia and an attorney for the United States Department of Interior. He is an active member of both the Minnesota State Bar Association and the American Health Lawyers Association.

  • Robert Cherney, Executive Vice President of Operations

    Rob Cherney is the Executive Vice President of Operations. Cherney has been a part of RAYUS’s operational leadership team for more than 10 years, most recently as a SVP/GM of Operations. Cherney is responsible for oversight of all fixed site operations for RAYUS’s national network of more than 120 imaging centers. In a variety of leadership roles with RAYUS, Rob has been responsible for driving significant new market growth and expansion in Minnesota, Missouri, Oregon and Washington. He has a wealth of experience in all levels of national and regional center operations with particular expertise in assessing, evaluating and addressing operational efficiencies, radiologist relationships and business development. He earned his Bachelor of Arts degree in Business/Corporate Communications from University of Saint Thomas.

  • Jarred Onarheim, Senior Vice President, West

    As senior vice president, Jarred Onarheim oversees business operations for RAYUS in Oregon and Washington. He also leads the organization’s vascular operations at a national level. Since joining RAYUS in 2008, Jarred has held a number of roles from account executive specialist and director of RAYUS Vascular Care, to senior director of business development. Prior to becoming senior vice president, Jarred led our Oregon market as the vice president of operations and business development where he was instrumental in bringing EPIC Imaging into our network.

  • Sheryl Streich, Senior Vice President, East

    As senior vice president, Sheryl Streich leads business operations for RAYUS’s Connecticut, Florida, Massachusetts, and Maine markets. She also oversees the organization’s operations improvement department. Over her 20 year career with RAYUS, Sheryl has held a variety of center and corporate positions ranging from CT technologist to director of our Information Technology department. Prior to becoming senior vice president, Sheryl’s experience as a technologist and extensive understanding of our systems led to her promotion to senior director of implementation and operations improvement. In this role she played a crucial part in ensuring business development objectives aligned with RAYUS’s strategic initiatives, while also identifying and implementing process improvements across our centers. Sheryl’s an active member of AHRA, ASRT and ARRT.