Our Leadership Team
Throughout its growth and change Rainbow’s commitment to the patient has remained constant. This commitment continues to be the leading force that drives the success of our organization.
Executive Leadership
Bill Buccalo President & CEO

Chad Fife, MBA, CPA, CMA Chief Financial Officer

Susan Lincoln Vice President of Business Development
As Vice President of Business Development, Susan is responsible for leading the business development efforts of the organization by supporting the expansion of current business as well as developing new business. Susan works collaboratively with the Executive Team and other leadership to develop and implement strategy and ensure the achievement of business development goals.
Susan has over 35 years of health care management and clinical experience with most of those years involved with strategic planning, business development, and execution of marketing initiatives within a variety of post-acute care providers. She has a strong knowledge of effective sales management practices and strategies along with skills in financial management and planning.
Susan earned her Bachelor of Science degree from Eastern Michigan University and is a Registered Respiratory Therapist.
Michael Nanzer, DPT, MBA, CSCS, FACHE Chief Operating Officer

Gigi Oleson Chief Human Resources Officer
Gigi Oleson is responsible for providing the vision, leadership and direction to execute human resource strategies that support Rainbow’s objectives, goals and values. She is responsible for designing strategies that will enable Rainbow to attract and retain a high performing and engaged workforce.
Gigi brings with her almost 20 years of experience working in human resources, primarily in health care.
She graduated from Oakland University, earning a Bachelor of Science degree in human resources development and training. She has been a member of the Society of Human Resources Management and a member of the American Society for Healthcare Human Resources Administration.
Brandon Roscoe Chief Information Officer
![DSC_3510[Brandon-New2018]WEB](https://rainbowrehab.com//wp-content/uploads/2013/07/DSC_3510Brandon-New2018WEB1.jpg)
Janice White, Ph.D., CCC-SLP, CBIST Chief Clinical Officer

Clinical Leadership
Lynn Brouwers, MS, CRC, CBIST Program Development Director

Mark Evans, MA, CCM, CRC, CBIS Director, Clinical Administration and Case Management
![DSC_3505[Mark-New2018]WEB](https://rainbowrehab.com/wp-content/uploads/2013/07/DSC_3505Mark-New2018WEB.jpg)
Colin King, Ph.D., LP, Vice President of Behavioral Health Program Development

Carolyn A. Scott, Ph.D., CBIST Neuropsychologist

Kimberly Wagenknecht, BSN, RN, CRRN, CBIST Clinical Director, Nursing

Mariann Young, Ph.D, CBIST Director, Pediatric and Young Adult Services

Lisha Clevenger RN, CCM, MSA, CBIS Director of Admissions
As the Director of Admissions, Lisha is responsible for overseeing Rainbow’s Admissions Department which also includes marketing and sales initiatives.
She has extensive experience with pediatric through geriatric populations. Her experience encompasses acute, sub-acute and post-acute rehab settings.
Lisha’s special interests include traumatic brain injury and transitional rehabilitation.
Lisha has a Master of Science in health administration from Central Michigan University and a Bachelor of Science in nursing from Madonna University. She is certified in case management and brain injury.
Divisional Leadership
Marissa Cruz, DPT, GCS, CBIS Director of Operations, Home and Community Services

Aaron A. Klassen, BS/HSM, CBIS Director of Operation, Adult Programs
Aaron serves as a Director of Operations overseeing our adult residential programs and the Vocational Rehab Campus in Ypsilanti, Mich.
Aaron earned his Bachelor of Science in Human Services Management from University of Phoenix in Phoenix, Ariz. He has over 20 years of leadership experience in areas including culinary arts, humanitarian aid, workforce development and residential programming for individuals with traumatic brain injury.
Sue Finney, BS, CBIS Director of Operations, Pediatric and Adult Programs

Jamie Nicoloff, DPT, CBIS Director of Operations, Adult Programs

Greg Rostker, MSA, CTRS, CBIS Director of Operations, Adult Programs

Tammy Zentz, CBIS Director of Operations, Adult Programs
