Our Leadership Team

Tim Redetzke, CPA

Controller, State
Rocky Mountain Cancer Centers – Central Business Office

Tim joined RMCC in 2017 with over 17 years of experience in finance and accounting, including four years of “Big 4” audit experience. He works to increase value-based care to patients, demystify healthcare accounting, and provide actionable insight into the financial results. Tim loves Colorado and enjoys numerous outdoor activities including hiking, biking, skiing, and snowshoeing.

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Marcus Garcia

Sr. Director, Payer and Strategy Relations
Rocky Mountain Cancer Centers – Central Business Office

Marcus joined RMCC in 2011 and has over 25 years of experience in healthcare contracting for commercial health insurance, large hospital systems, physicians, and ancillary providers. He has worked with innovation to tie 92% of RMCC’s revenues to value-based care, while incorporating evidenced-based measures, patient experience, and patient-centered care. By upholding value-based principles, RMCC has proven results of reduction of costs, savings for the healthcare system, and improved quality of our patients' care. Marcus has lived in Colorado for 46 years and enjoys time with family, friends, and numerous outdoor activities.

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Rafael Hernandez

Director, Imaging
Rocky Mountain Cancer Centers – Central Business Office

Rafael joined RMCC with 30 years of work experience in nuclear medicine and a master’s degree in health care administration/leadership skills. His focus is to implement processes that improve efficiency, customer service, and team-building. On his off-time, he enjoys auto racing, exploring the outdoors, and working on his ”honey do list.”

Mindy Grantham

Director, Marketing
Rocky Mountain Cancer Centers – Central Business Office

Mindy joined RMCC in 2019 with over 25 years of experience in marketing, including extensive experience in healthcare and consumer goods. Her focus is on improving access and the patient experience. Outside of the office, she likes to hike, be with friends and family, and travel. She has been to all 50 states and 30 countries.

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Joni Richman, RN, BSN

Director, Research Operations
Rocky Mountain Cancer Centers – Denver Midtown

Joni joined RMCC in 2015 with over 25 years of experience in oncology nursing and research. While working towards her degree in nursing, her last clinical experience was in oncology and she has never worked outside that therapeutic area. She was exposed to research early in her career and loves the constant change and learning that working in research provides. Her experiences with oncology patients have given her a sense of purpose and drive to improve the care RMCC gives. In her off-time, she can be found hanging out with family and friends, enjoying the outdoors or any of the many Colorado sporting events.

James Mann

Manager, Laboratory
Rocky Mountain Cancer Centers – Denver Midtown

James joined RMCC in April 2022. He brings experience in both inpatient and outpatient laboratory work flow. He is MLS certified through the ASCP and strives for patient and staff satisfaction by utilizing process improvement. He has called Colorado his home for 56 years and he enjoys outdoor activities and spending time with family and friends.

Scotty Cass

Practice Administrator
Rocky Mountain Cancer Centers – Colorado Springs
Rocky Mountain Cancer Centers – Pueblo

Scotty joined RMCC in 2021 with nearly 30 years of medical operations experience which includes 24 years in the Air Force. Scotty's focus is centered on physician, staff, and patient satisfaction with emphasis on quality and lean methodologies. Outside of work, Scotty enjoys being with his family, exploring the great Colorado outdoors, and spending countless hours antiquing.

Joey Prelle

Practice Administrator
Rocky Mountain Cancer Centers – Boulder
Rocky Mountain Cancer Centers – Lakewood
Rocky Mountain Cancer Centers – Longmont
Rocky Mountain Cancer Centers – Louisville
Rocky Mountain Cancer Centers – Thornton

Joey began her career with RMCC in 1999, starting in Thornton as phone operator. She worked all positions in the front office and RMCC's help desk until she accepted the role of office manager for Boulder. Her career with RMCC has grown over the years where she is now the practice administrator for RMCC Boulder, Lakewood, Longmont, Louisville, and Thornton. Joey's passion is operations with the use of enabling technology. In her free time she enjoys paddle boarding, scuba diving, hiking, and painting.

Carol Word

Practice Administrator
Rocky Mountain Cancer Centers – Denver Midtown
Rocky Mountain Cancer Centers – Denver Rose
Rocky Mountain Cancer Centers – Lone Tree

A Colorado native, Carol began her career with RMCC in 1990. Over the span of 31 years, she’s held leadership roles in the clinics and in human resources. Carol likes to spend her time away from the office outdoors; especially in the Colorado mountains, traveling, and spending time with her children, grandchildren, family, and friends.

Mandi Evel

Nursing Manager
Rocky Mountain Cancer Centers – Colorado Springs Penrose Pavilion
Rocky Mountain Cancer Centers – Colorado Springs St. Peregrine Pavilion
Rocky Mountain Cancer Centers – Pueblo

Mandi came to RMCC in 2017 with eight years of inpatient oncology experience. She became the Manager of Clinical Services in 2021 after fulfilling the role of an Infusion RN and Nursing Supervisor for Pueblo. Mandi is a Southern Colorado native and strives to improve the provision of community-based oncology care. She enjoys time with family at motorsport events, rodeos, and dance recitals.

Kim Peters

Nursing Manager
Rocky Mountain Cancer Centers – Aurora
Rocky Mountain Cancer Centers – Centennial
Rocky Mountain Cancer Centers – Englewood
Rocky Mountain Cancer Centers – Littleton

Kim rejoined US Oncology in August 2016 with over 15 years of nursing experience, having worked with US Oncology previously from 2006-2010. She worked as an infusion nurse and a clinic nurse until 2017 when she became the manager of clinical services in Weatherford, Texas. Kim moved to Colorado in August of 2021 to be closer to family. She enjoys time with her granddaughter, outdoor activities, musicals, and crafting.

Glenn Balasky

Tim Redetzke, CPA

Marcus Garcia

Mark Young

Rafael Hernandez

Mindy Grantham

Evan Slater, PharmD

Joni Richman, RN, BSN

James Mann

Tricia Guinn

Katheryn Sluyter

Scotty Cass

Jerome Gomez

Joey Prelle

Carol Word

Mandi Evel

Robin Hoffman

Kim Peters