• Mitchell Tomlinson

    President & Chief Executive Officer


    Mitchell Tomlinson has been with Peckham, Inc., since 1976, and has been the CEO since 1994. He earned a master’s degree in Rehabilitation Counseling from the University of Wisconsin-Stout.

    Tomlinson’s accomplishments include creating new partnerships with Michigan State University, participating in a Harvard Business Review case study of best practices in nonprofits and overseeing a growth of more than 1000% in revenues.

    He has been awarded the Management Excellence award from the National Council of Work Centers, the Award of Excellence from the Michigan Rehabilitation Conference and named Business Man of the Year by the Southside Business Association. In 2010, he received the John G. Thodis Michigan Manufacturer of the Year Award, Special Achievement Award for Peckham's significant contributions to the industry and community. He is also a 2010 recipient of the Socially Responsible Entrepreneur of the Year Award from the 2010 Greater Lansing Business Monthly Entrepreneurial Awards.

    Tomlinson is the Vice Chair of the State’s Council on Labor and Economic Growth, a member of the Michigan Council for Rehabilitation Services and is on the Rehabilitation Counseling Program Advisory Committee at MSU. He serves as board member and past president of the 501 Alliance and is a member of Capital Area Transportation Authority (CATA) local advisory committee.

  • Jo Sinha

    Chief Operating Officer

    Jo Sinha is the Chief Operating Officer of Peckham, Inc., and has been with the company since 1994 in a number of capacities. She earned a master’s degree in Business Administration (MBA) from Michigan State University.

    Sinha was instrumental in getting Peckham’s first call center opportunity off the ground successfully. She assisted in transitioning most of the Battle Creek Federal Center contracts from commercial and federal entities to AbilityOne contracts. This includes the Defense Logistics Agency in Battle Creek Customer Contact Center, the Battle Creek Facilities contract, the Deptartment of Defense E-mall Support contract, the ADP Security contract and a number of smaller administrative contracts.

    In her current capacity, Sinha provides resources to each business unit including new business development, pricing support, cost analysis, contract start-up, compliance review and oversight, risk management and operational support. Thoughtful research, innovation and out-of-the box thinking characterizes her approach to problem solving.

    She works closely with the finance and grants management teams in executing long and short-term sustainable funding strategies. She is a board member of two local non-profits and is the recipient of the Award of Excellence from the Michigan Rehabilitation Conference.

  • Greta Wu

    Chief Human Services Officer

    Greta Wu is a champion of multi-cultural rehabilitation concerns. She recognizes services delivery must be sensitive to cultural issues, especially when working holistically with the family. Wu demonstrates a continuous commitment to self-determination and facilitates the opportunity for the appreciation of the abilities of people with disabilities through the variety of Peckham’s collaborative projects with community partners.

    Wu currently serves as a board member for the Origami Brain Injury Rehabilitation Center, the Ingham County Department of Health and Human Services and has previously served on many other boards including the Michigan Rehabilitation Association and Brain Injury Association of Michigan. She was a CARF (Commission on Accreditation of Rehabilitation Facilities) surveyor from 1996 through 2016 and has been an outstanding achievement award recipient at the Michigan Rehabilitation Conference.  She is the Chief Human Services Officer of Peckham Inc. responsible for all the services programs provided by Peckham, and has been with Peckham for 35 years.   

    Through her leadership and hands on effort, Peckham has gained a reputation as a leader in rehabilitation programs and services. She is a four-time winner of the Supervisor of the Year award from the Michigan State University Rehabilitation Counselors education program.

    Greta Wu graduated from Providence University, Taichung, Taiwan, with a BA in business administration and Michigan State University with a MA in rehabilitation Counseling. She was awarded the Outstanding Alumni of the year award from Providence University in 2014. 


  • Harry Pianko

    Chief Financial Officer

    Harry Pianko joined Peckham, Inc. in 2016.  He has more than 15 years of experience in various finance and accounting positions within multiple industries in the for profit, not for profit, and governmental sectors.  Pianko is a results-driven financial and operational leader with executive and management expertise in finance, accounting, operations, and information technology.
    Prior to joining Peckham, Inc., Harry was the CFO for the Education Achievement Authority of Michigan and worked at PricewaterhouseCoopers.  He is also a past president of VegMichigan, for which he was selected as a member of Crain's Detroit Business 40 under 40.  Pianko earned BBA and MAcc degrees from the University of Michigan’s Ross School of Business. He is also a licensed Certified Public Accountant in the State of Michigan.

  • Scott Derthick

    Chief People & Culture Officer

    "I have the awesome privilege of leading an incredibly talented and dedicated group of HR staff at Peckham, Inc. We focus on the obvious HR responsibilities including benefits, recruiting, on boarding, learning, growth and development. But we also play a critical role in helping to develop and steer our ‘company culture.' When you surround yourself by people who love what they do and focus on our mission every day, it's amazing what can be done."

    Scott Derthick has been with Peckham since 1991. He earned a master’s degree in Rehabilitation Counseling from Michigan State University and a master’s of Horticulture and Packaging. He serves as a board member for the Human Service Association Workers Compensation Fund and Origami Brain Injury Rehabilitation Center.

    His HR philosophy is to become an ambassador or steward of the culture, guiding staff to keep the mission top of mind in all they do. Derthick also provides leadership in the areas of Wellness, Safety, Opportunity for Improvement, Asset Building, Peckham University and Sustainability efforts at Peckham.

    His diligence and commitment to the Peckham culture has helped keep staff and leadership grounded in the mission as we continue to grow as an organization. His unique and innovative approach to Human Resources has served Peckham well and helped recruit a level of staff who not only have what it takes to succeed but that something extra compassion, commitment and a keen focus on the Peckham mission.