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NIGP's talented instructors are a source of inspiration and motivation. These amazing instructors put their heart and soul into teaching and encourage students to never stop learning because anything is possible.




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1409 Lewie Road
Gilbert, SC 29054
Photo of Ms. Mary LaBord Sims, NIGP-CPP, CPPO

Ms. Mary LaBord Sims, NIGP-CPP, CPPO

On the Faculty of:
Alternative Dispute Resolution
Developing and Managing Requests for Proposals in the Public Sector
Fundamentals of Leadership and Management in Public Procurement
Introduction to Public Procurement
Planning, Scheduling and Requirements Analysis

Harford County Public Schools
491 Moores Mill Road
Apt. 2
Bel Air, MD 21014
Photo of Ms. Bobbie Tolston, NIGP-CPP, CPPO, CPPB

Ms. Bobbie Tolston, NIGP-CPP, CPPO, CPPB

Bobbie Tolston, NIGP-CPP, CPPO, CPPB Bobbie developed a passion for the public procurement profession over 20 years ago. She has shared her management expertise in various capacities throughout her career. Most recently as served as the Supervisor of Procurement for Harford County Public Schools (HCPS) from 2017-2022. Bobbie is currently the Energy Conservation Resource Manager for HCPS where her responsibilities include: the development, implementation, coordination, and monitoring of the HCPS energy management program, development of employee training programs for schools and offices to promote an awareness of the energy management program and the efficient use of energy throughout the district. Bobbie has a broad range of professional experience. She has managerial experience as a 'change agent" and uses technology to enhance best practices in procurement. She has been a transformational leader for agencies such as water utilities, local, and municipal government and school district. She serves on the Talent Council and is a Liaison to the Mentorship Committee. She is a Pathways Instructor for NIGP, where she has contributed her expertise as a subject matter expert for content development for courses including Foundations of Sourcing and Contracting, Evaluation Methods, Negotiations, Specification Development and Sourcing and Contracting Methods. She is a Member of the Radio NIGP show and hosts a segment titled "Deeper Dive—make a splash”.
3510 Vintage Trl
Woodstock, GA 30189-8147
Phone: 770-686-1371
Fax: 770-528-8428
Photo of Mr. William J. Tommie, Jr., CPPO

Mr. William J. Tommie, Jr., CPPO

William J. (Joe) Tommie, CPPO, retired in 2020 after serving as Purchasing Director for Cobb County Government, GA for 8 years. Prior to moving to Georgia and county government, he served in Procurement Management positions for three South Carolina public-school districts for over 30 years. Joe has a BS Degree in Biology from Lander University and a Masters Degree in Personnel Services from Clemson University. A charter member of the South Carolina Association of Governmental Purchasing Officials, Joe served as both Vice President and President. He received the South Carolina Association of Governmental Purchasing Officials Purchasing Manager of the Year Award in 2003, 2007, and 2016. In 2016, Joe was awarded Cobb County Government’s Silver Eagle Award for outstanding leadership.

Photo of Mrs. Rashpal U.

Mrs. Rashpal U.

Contracting Officer
Loudoun County
1 Harrison St SE
4th Floor
Leesburg, VA 20175
Photo of Ms. Kristy D Varda, NIGP-CPP, CPPO, CPPB

Ms. Kristy D Varda, NIGP-CPP, CPPO, CPPB

Originally from Oklahoma and a proud Oklahoma State University Alum, Kristy spent 10 years as a military spouse before relocating to Virginia from Germany. Kristy completed her Masters in Biotechnology Studies in 2008 and her MBA in 2009 while working in a variety of industries. She has been in public procurement for over 11 years and now works as a Capital Contracting Officer for Loudoun County Government. Her passion to help others grow in their procurement profession began with presenting webinars on Sole Sources and Software Procurement. She has been a part of the NIPG taskforce to write the Best Practices series on technology procurement and helped to develop both the Foundations of Technology Procurement and Job Order Contracting Courses for Pathways. She currently teaches a variety of topics for NIGP, is a staff member of Radio NIGP, and an NIGP mentor.
7 Hamilton Place
Great Falls, MT 59404
Photo of Ms. Magan Waltari, NIGP-CPP, CPSM, CPPB

Ms. Magan Waltari, NIGP-CPP, CPSM, CPPB

Magan Waltari, CPPB, CPSM, NIGP-CPP is an experienced procurement professional with 16 years of experience in the procurement field, with 10 years specific to public transit procurement. She is currently the Procurement and Contracts Manager for Whatcom Transportation Authority (WTA) in Bellingham, WA. Prior to that, she served as a Project Coordinator for Alpha Technology Services providing back office coordination, project management, and customer support for a variety of national telecommunication construction projects. Magan was presented the 2020 Buyer of the Year by the Washington Chapter of NIGP. She often serves as a procurement subject matter expert for the Washington Transit Association’s Finance Officer Leadership Committee. Throughout her career at WTA, she has assisted peer agencies with DBE goal calculations, policy drafting, staff training, and succession planning. Magan currently serves on her NIGP Chapter Education Committee, Awards Committee, and Lunch and Learn Committees and chair’s the Chapter’s Marketing and Public Relations Committee. She also works with the NIGP Consulting team assisting other agencies with their procurement needs.
2060 Cottage St. SE
Salem, OR 97302-0000
Photo of Mr. Jon M. Walton, NIGP-CPP, JD, CPM

Mr. Jon M. Walton, NIGP-CPP, JD, CPM

A good chunk of Jon Walton’s higher education was devoted to environmental and natural resources policy and science, and he helped start a Pacific Northwest conservation group bringing together disparate stakeholders on win-win conservation projects. Jon spent his first five years after college as a wilderness skills instructor working with juvenile delinquent youth. Later odd jobs included FEMA-funded mental health work for victims of natural disasters, and providing leadership training to executives of major corporations. A member of his state bar since 1992, he always intended to put his legal training toward service in the public sector, and started by working as legislative staff, and then a state agency lobbyist, at his state legislature. Someone obviously having difficulty figuring out exactly what to do when he grows up, Jon came to government procurement in 1997, working in state agencies, and has felt fortunate to handle a large variety of procurements and contracting situations. Jon strives to be a champion for procurement training and certification, has a graduate Certificate in Public Management, is the author of the Public Procurement Guide for Elected Government Official, was Chair of the NIGP Legislative & Position Committee, was the 2015-16 Buyer of the Year, and continues to be heavily involved in NIGP initiatives, task forces and global best practices. Jon is currently recently completed several terms on the NIGP Governing Board, and is an NIGP Instructor and part of the Radio NIGP team.
8509 Woodland Rose Circle South
Cordova, TN 38016
Photo of Ms. Christin Webb, MBA

Ms. Christin Webb, MBA

Christin Webb is a Certified Procurement Professional (NIGP-CPP) with more than 15 years of combined management and organizational contract and procurement experience. She is the former Administrator of Purchasing for Shelby County Government where she was responsible for overseeing an approximate spend of $1.1B on all activities involving the procurement of County goods and services. Before joining Shelby County, she was a procurement professional with FedEx Services and Memphis Light Gas and Water Division. She was a former President of the Tennessee Association of Public Purchasing (TAPP) and Talent Council Member for Institute for Public Procurement (NIGP). Christin is currently an Instructor for NIGP. Christin is passionate about serving her community not only through governmental procurement, but also as she serves as Commissioner with the City of Memphis’ Youth Guidance Commission and regularly works with non-profits and schools as a volunteer. Christin is a member of Delta Sigma Theta Sorority, Incorporated. A native Memphian, Christin graduated with a Bachelor of Arts from the University of Memphis and Masters of Business Administration from Webster University. A fun note about Christin is that she is a twin, published author, screenwriter, and Chief Leadership Enthusiast with The Greater You Leadership Series, LLC.
Director, Contracts and Procurement
San Mateo County Transit District
1250 San Carlos Ave
San Carlos, CA 94070-2468
Photo of Mr. Kevin C. Yin, NIGP-CPP, CPPB

Mr. Kevin C. Yin, NIGP-CPP, CPPB

Kevin has been in procurement for 20+ years, in both private and public sectors. Currently, he is the Director of Contracts and Procurement for the San Mateo County Transit District in San Carlos, California. He and his team are responsible for developing and administering the District's procurement policies and procedures, and all procurement activities.

Kevin's thoughts on learning... 1) You're never too old to learn. 2) It's forever. No one can ever take that knowledge away from you. 3) Learning should be fun (your brain may experience a bit of pain, but it's temporary). Kevin is an active member at the Northern California Chapter of NIGP, where he is serving as the Chapter Vice President; and at the National level, where he is a Certified NIGP Instructor. Kevin has served on committees and on the Board of the OPPA Chapter of NIGP (Oregon), including serving as the OPPA President during FY2008-2009. Also, he has served as the Vice Chair of the NIGP Member Council.

Kevin graduated from the University of Oregon (Eugene, Oregon) in 1993 with BAs in Finance, Marketing, and Psychology. GO DUCKS!

Kevin lives in the Bay Area in California. He is married to Kelly for over 25 years. They have two children, Ethan (20) and Abbie (18).

On the Faculty of:
CPPB Prep /
Developing and Managing RFPs in the Public Sector /
Introduction to Public Procurement

University of Alberta - Procurement and Contract Management
2 Eden Court
St. Albert, AB
T8N 6L1
Photo of Mrs. Donna Zeeh Chorley

Mrs. Donna Zeeh Chorley

Donna Zeeh Chorley has worked within Public Procurement since 1981 in a variety of capacities from administration to management. She has been fortunate in her career to have worked with and bought a diverse selection of commodities and services, including construction. Donna currently is a Manager for Procurement and Contract Management within the University of Alberta in Edmonton, Alberta, Canada. She has her NIGP-CPP, CPPO and CPPB Certifications and has been teaching with NIGP since 1997. Donna is a Master Instructor for NIGP and has served on the Executive and various Committees within NIGP’s Canada West Chapter since 1989 including Vice-President (2009 & 2010), President (2011 to 2014), and Past President (2015 to 2024). Her focus in teaching is to make the valuable learning experience open, educational, memorable and fun.

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