Sierra Roy

Sierra Roy is a Manager based in the Ann Arbor office. She is a member of the firm’s Education Services Group and joined Yeo & Yeo in 2021.

Specializations

  • Assurance services with an emphasis on government entities, school districts, and non-profit organizations
  • Audit under government auditing standards
  • Single audits and audits under 2 CFR 200

Professional Certifications and Education

  • Certified Public Accountant (CPA)
  • University of Michigan-Dearborn, Bachelor of Business Administration in Accounting

Professional Membership

  • Michigan Association of Certified Public Accountants
  • American Institute of Certified Public Accountants

Mackenzie Doyle is a Manager based in the firm’s Alma office. She is a member of the Assurance Service Line. She joined Yeo & Yeo in 2021. 

Specializations

  • Assurance services with an emphasis on government entities, school districts, for-profit organizations, and employee retirement benefit plans
  • Audit under government auditing standards
  • Single audits and audits under 2 CFR 200

Professional Certifications and Education

  • Certified Public Accountant (CPA)
  • Northwood University, Bachelor of Business Administration in Accounting

Professional Membership

  • American Institute of Certified Public Accountants
  • Michigan Association of Certified Public Accountants

Publications/Seminars

McKenzie Luria is a Manager in the Ann Arbor office. She is a member of the firm’s Assurance Service line. She joined Yeo & Yeo in 2023.

Specializations

  • Audits of school districts
  • Audits of nonprofit organizations
  • Audits under Uniform Grant Guidance (Single Audits)

Professional Certifications and Education

  • Certified Public Accountant (CPA)
  • Wittenberg University, Bachelor in Accounting & Finance

Professional Membership

  • American Institute of Certified Public Accountants
  • Michigan Association of Certified Public Accountants

Community Involvement

  • Founding member of Ann Arbor Women for Good
  • Volunteer for Ladywood Legacy group

Joey Winterstein is a Manager in the Saginaw office. He is a member of the firm’s Education Services Group. He joined Yeo & Yeo in 2019.

Specializations

  • Audits of school districts, nonprofit organizations and healthcare organizations
  • Audits under Uniform Grant Guidance (Single Audits)
  • Audits under Government Auditing Standards

Professional Certifications and Education

  • Certified Public Accountant
  • Northwood University, Bachelor of Business Administration in Accounting

Professional Membership

  • Michigan Association of Certified Public Accountants
  • American Institute of Certified Public Accountants
  • Michigan School Business Officials

Publications/Seminars

  • Presented On Auditing Michigan School Books at the 2024 MICPA Governmental Accounting & Auditing Conference
  • Presented various internal trainings on auditing schools in the State of Michigan

Community Involvement

  • Saginaw Valley Zoological Society (Saginaw Children’s Zoo), Treasurer

Jordan Bohlinger is a Manager in the Flint office. He is a member of the Assurance Service Line and the firm’s Education Services Group. He joined Yeo & Yeo in 2017. 

Specializations

  • Audits of school districts
  • Audits of nonprofit organizations
  • Audits under Government Auditing Standards
  • Single audits and audits under 2 CFR 200
  • 990 Tax Returns

Professional Certifications and Education

  • Northwood University, Bachelor of Business Administration in Accounting

Professional Membership

  • American Institute of Certified Public Accountants
  • Michigan Association of Certified Public Accountants
  • Michigan School Business Officials 

Publications/Seminars

  • Presented various internal trainings related to governmental accounting for school districts

Community Involvement

  • Bay Valley Academy Gymnastics Booster Club, treasurer 

Awards

  • Flint and Genesee Group, 40 Under 40 honoree – 2024

Shannon Champagne is a Manager in the Saginaw office. She is a member of the firm’s Nonprofit Services Group and Audit Services Group. She joined Yeo & Yeo in 2018. 

Specializations

  • Audits for school districts, nonprofit organizations and healthcare organizations
  • Audits under government auditing standards
  • Audits under Uniform Grant Guidance (Single audits)
  • Nonprofit tax returns – Form 990

Professional Certifications and Education

  • Certified Public Accountant (CPA)
  • Saginaw Valley State University, Bachelor in Professional Accountancy

Professional Membership

  • American Institute of Certified Public Accountants
  • Michigan Association of Certified Public Accountants

Community Involvement

  • Saginaw Township Soccer Association, past board member
  • Saginaw Young Professionals Network, member

Wendy Thompson is Yeo & Yeo’s training manager. She joined Yeo & Yeo in 2006 and has over 20 years of public accounting experience. Wendy researches and teaches all aspects of accounting, compilations, reviews, audits and nonprofit tax returns. She assists staff in nine Yeo & Yeo offices with software used in these areas and creates and updates best practices. She is a member of the firm’s Audit Services Group, the Nonprofit Services Group and the Compilation and Review team.

Specializations

  • Training and development
  • Audits of nonprofit organizations
  • Audits under government auditing standards
  • Nonprofit organization taxation
  • Single audits under 2 CFR200

Professional Certifications and Education

  • Certified Public Accountant (CPA)
  • Northern Michigan University, Bachelor of Science in Accountancy
  • Northern Michigan University, Bachelor of Science in Spanish

Professional Membership

  • American Institute of Certified Public Accountants
  • Michigan Association of Certified Public Accountants
  • Association for Talent Development (ATD)
  • Michigan Association of Certified Public Accountants’ Nonprofit Task Force

Publications/Seminars

  • The Exception to the Rule: An Analysis of Single Audit Results – MICPA Nonprofit Conference, October 2021
  • Year-End Payroll: Payroll & Tax Returns (941), W-2s – MSBO Conference, October-November 2021 (with Kristi Krafft-Bellsky)
  • Deep Dive Into Form 990 – MICPA Nonprofit Conference, October 2020
  • Form 990 Statement of Revenue – MICPA Nonprofit Conference, October 2020
  • GAAP Alternatives for Nonprofits – MICPA CPE Mega Conference, October 2019
  • Facing the Topic 606 Challenge – MICPA Nonprofit Conference, October 2019
  • A Nonprofit Accounting and Financial Reporting Update – MICPA Nonprofit Conference, October 2019
  • New Accounting Standards for 2018 – Michigan Society of Association Executives 2018 Operations Conference, January 2018
  • What’s All the Fuss About Form 990? eBook
  • Lobbying and Political Expenditures eBook
  • Revenue Recognition for Nonprofits eBook
  • Essential Nonprofit Policies eBook
  • Functional Expense Allocation for Nonprofits After ASU 2016-14 eBook

Community Involvement

  • Boy Scout Troop 760, Scoutmaster
  • Girl Scout Troop, Co-leader
  • Midland High Music Parents Association, Band Representative

Awards

  • Spirit of Yeo Award (2016) – recognizing one individual each year who exemplifies the attributes of the firm’s mission and core values

Timothy Crosson Jr. is a Principal in the Ann Arbor office. He is a member of the firm’s Education Services Group and Audit Services Group. Tim joined Yeo & Yeo in 2014 and has more than 12 years of audit and business consulting experience.

Specializations

  • Audit and assurance services for governmental units, school districts, nonprofit organizations and healthcare organizations
  • Audits under government auditing standards
  • Audits under Uniform Guidance (Single Audits)

Professional Certifications and Education

  • Certified Public Accountant
  • University of Michigan-Dearborn, Bachelor of Business Administration in Accounting

Professional Membership

  • American Institute of Certified Public Accountants
  • Michigan Association of Certified Public Accountants
  • Michigan School Business Officials

Publications/Seminars

Community Involvement

  • The University of Michigan-Dearborn Alumni Association
  • Community Choice Credit Union, vice chairman of the board
  • Community Choice Foundation, vice chairman of the board
  • NuPath Community Credit Union, former board member

Michael Evrard is a Principal in the Kalamazoo office. He leads the firm’s Audit Services Group and is a member of the Nonprofit Services Group and the Education Services Group. He joined Yeo & Yeo in 2010.

Specializations

  • Single audits under Uniform Guidance (2 CFR 200)
  • Audits under government auditing standards
  • Audits of school districts
  • Audits of public school academies
  • Audits of nonprofit organizations and Form 990 preparation
  • Audits of 401(k) plans
  • Audits of for-profit companies
  • Data extraction

Professional Certifications and Education

  • Certified Public Accountant
  • AICPA Advanced Single Audit Certification
  • Central Michigan University, Bachelor of Business Administration in Accounting

Professional Membership

  • Michigan Association of Certified Public Accountants
  • American Institute of Certified Public Accountants

Publications/Seminars

Community Involvement

  • Guys Who Give of Kalamazoo County
  • Family Promise of Genesee County, former treasurer
  • Mott College Accounting Advisory Committee, former member
  • Genesee County Habitat for Humanity, former volunteer
  • Leadership Genesee graduate

Michael Rolka is a Principal in the Troy office and serves in the Assurance Service Line. He leads the firm’s Government Services Group. Mike joined Yeo & Yeo in 2012.

Specializations

  • Audits of governmental entities
  • Single audits under Uniform Grant Guidance
  • Audits of school districts
  • Audits under government auditing standards

Professional Certifications and Education

  • Certified Public Accountant
  • Certified Government Financial Manager
  • Saginaw Valley State University, Bachelor of Professional Accountancy
  • Emerging Leaders Academy graduate, 2025

Professional Membership

  • American Institute of Certified Public Accountants
  • Michigan Association of Certified Public Accountants
  • Michigan Government Finance Officers Association – Board of Directors and Standards Committee

Publications/Seminars

Community Involvement

  • Special Olympics, volunteer
  • Clinton River Watershed Council Finance Committee
  • LEA Global Volunteer Week, volunteer

Awards

  • Auburn Hills Chamber of Commerce – Tomorrow’s 20 Award, May 2025