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.

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

    Amy Garrigues serves as the Chief Strategy and Development Officer of RAYUS.  In this capacity, Amy leads and provides broad strategic oversight and direction to RAYUS.  Amy oversees the business development, managed care, clinical research, 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.

  • Mike Weaver, Executive Vice President of Market Success

    Mike Weaver is the Executive Vice President of Market Success and provides leadership for RAYUS Radiology’s market success teams throughout the country. With 30 years of healthcare experience, Mike has worked closely with growth teams, physicians, joint ventures, and healthcare systems. Prior to his joining Rayus Radiology, he served as Vice President of business development for United Surgical Partners Intl for 11 years in multiple roles including leading their national imaging growth efforts. In addition, Mike has 15 years of imaging in various leadership capacities regarding organic growth, operations, service, and development; and started his career as an MRI field service engineer with GE Healthcare. Mike holds a bachelor’s degree in engineering, an MBA, and a doctorate in healthcare leadership from Arizona School of Health Sciences.