About Us


GMSI is About Results

From our medical case management and vocational rehabilitation services to our early return to work software, we expedite the return to work process and provide specific and measurable outcomes that assist our customers in reducing employee absenteeism and associated costs while improving the bottom line.

As the speed of technology advances, we continue to provide a progressive and efficient road map to assist our customers as they strive to meet the needs of an ever changing and dynamic economy. We approach our business along a managed care continuum from prevention to intervention. Our goal is to become a seamless solution for all of our customers.

Experience Leads to Success

GMSI owners have delivered managed care services, cost containment strategies, and medical and vocational programs to individuals and employers across the country for over 30 years. We are familiar with employers and with the resources our customers require in order to experience success. Moreover, we know what it takes to assist both the client and the employer in this process. Our philosophy has always been that every individual should have the opportunity to participate in productive employment, and that regardless of the disability, this is possible with intense case management and aggressive employment services.

GMSI is owned by Mark Willis & Michael Leep, who oversee daily operations, new service line development and staff development. As practitioners, they handle all JTA employer services on a national basis. They consult with their clients to deliver return to work solutions, cost avoidance and injury prevention strategies, and state of the art technology solutions.

Mark Willis, Owner
Mark a certified ergonomic specialist and has over 30 years of Managed Care experience. His undergraduate and graduate degrees are in Counseling and Rehabilitation from Marshall University. He served as a Regional Manager for VGRS in Cleveland, Ohio serving Northeast Ohio Self Insured Employers. Mark also served as a Regional Vice President for Resource Opportunities, Inc. in Virginia Beach. As the Regional Vice President, Mark developed award winning Risk Management programs for his customers across the country.

Michael Leep, Owner
Michael is a certified ergonomic specialist and has more than 30 years of successful sales, management, and business experience.  He has an undergraduate degree in Counseling & Rehabilitation and a Masters Degree in Business Administration from Marshall University. He served as Regional Director for VGRS in Akron, Ohio serving Central Ohio Self Insured Employers. While employed by Procter & Gamble, he served as a Sales Manager for P&G’s Health and Personal Care line. Michael was also the President of Resource Opportunities, Inc., a $25 Million National Managed Care company. Michael guided ROI’s growth through six strategic partnerships/acquisitions.