Subregional Mobility Managers

Billy Parker

East Valley

Justin MacGregor

West Valley

Scott Muller

Central Area

Billy Parker

Chandler/Gilbert Arc

Billy’s career in Intellectual and Developmental Disabilities (I/DD) happened quite by accident and out of necessity in 1983 while raising a young family in Dixon, Montana (pop. 150). After finding that I/DD was a natural fit, Billy continued in Montana, then Oregon, and now, Arizona where he has been with Chandler Gilbert Arc since 1994 accepting the position of Executive Director in 2013 and completing his Master of Administration with Leadership Emphasis through Northern AZ University. Billy’s career has seen great diversity through management of multiple services in multiple states where he specializes in Coordinated Mobility, Systems Development, and Resource Coordination.

The Arc Logo


3250 N San Marcos Place
Chandler, AZ 85225


(480) 892-9422

Justin MacGregor


Justin MacGregor is Sub-Regional Mobility Manager for the West Valley. An Air Force veteran who believes in service before self, Justin has worked for over 5 years at Scottsdale Training and Rehabilitation Services (STARS), a center for individuals with intellectual and developmental disabilities that hosts day programs, on-site work centers, community-based employment training opportunities, and transition programs for young adults. As the Fleet Maintenance and Facilities Manager, Justin is responsible for making sure all vehicles are serviced and running at top performance, and that STARS facilities are maintained and operated in accordance with all regulations and guidelines. As a Sub-Regional Mobility Manager, Justin aims to support you as you work to provide safe and reliable transportation for elderly individuals and those with disabilities.

Northwest Valley Connect logo


11130 East Cholla Street
Scottsdale, AZ 85259


(480) 339-1063

Jim Rogers

Lifewell Behavioral Wellness

Jim Rogers is the Transportation Manager at Lifewell, a non-profit healthcare agency providing integrated treatment, services, and support for low-income clients diagnosed with serious mental illness (SMI), general mental health issues, and substance abuse disorders. Since starting the transportation program in 2011, he now has a staff of 18 who provide clients with transportation services to attend medical and/or legal appointments, participate in volunteer activities and classes, and take trips to grocery stores and food banks. Prior to his position at Lifewell, Jim worked as a project manager in the construction industry and operated his own business. He also previously attended ASU, played professional golf, and is currently a father of two children in Cave Creek.

Lifewell Behavioral Wellness logo


202 E. Earll Dr.
Suite #200
Phoenix, AZ 85012





Scott Muller has worked at Gompers for over four years now as the Vice President of operations. He is responsible for the results of all of the programs that Gompers offers: DTA, in home services, employment services, transportation, and a school. He has been a mobility manager for the central region for a little over a year now, approaching his second year. His focus is pass training. Previous to his work at Gompers, he has worked with foster children in a placement agency, in the Mental Health System as a center director in Tucson, and was a LPC for ten years in Missouri.


6601 N 27th Ave.
Phoenix, AZ 58017


(602) 336-0061


Documents on this page are subject to change. Please contact mobility manager for latest versions.

Download Gompers documents using the links below.

A strategy outlined in the MAG Human Services Coordination Transportation Plan is the utilization of subregional mobility managers to enhance and promote regional mobility coordination planning efforts in the region. This has included identifying subregional mobility managers as community liaisons for the North Valley, East Valley, West Valley, and the Central area of the MAG region.

Current Subregional Mobility Managers

Subregional mobility managers participate in designated workgroups, provide feedback on the brown bag trainings, and provide support for regional coordination strategies outlined in the MAG HSCTP. The current sub-regional mobility managers are listed above.

Vehicle Sharing

Vehicle sharing is a unique program that involves vehicles acquired through a federal grant program. Agencies share an accessible vehicle that enables people with disabilities to get out of their homes. Many social services say that a major challenge they face is a lack of transportation as public transit options may not be the best fit.

Human Services Transportation Planner III
DeDe Gaisthea

About MAG

The Maricopa Association of Governments (MAG) is a Council of Governments (COG) that serves as the regional planning agency for the metropolitan Phoenix area.

Title VI

Title VI requires that no person in the United States of America shall, on the grounds of race, color, or national origin, be excluded from the participation in, be denied the benefits of, or be otherwise subjected to discrimination under any program or activity for which MAG receives federal financial assistance.

Get in Touch

  • Address: 302 N 1st Ave., suite 300
    Phoenix, Arizona 85003

  • Phone: (602) 254-6300

  • FAX: (602) 254-6490

  • Email: