Back to top

Our Team

Frederick G. Gould, III, CPA

Fred is a 1985 Western Michigan University graduate. He passed the 1986 CPA exam. Fred blazed the trail for the firm in 1991, which also earned him the best office space.

Edward R. Stinson, CPA

Ed is a 1982 Hope College graduate, where he played baseball and football… well, he was on those teams anyway. He passed the 1984 CPA exam. Ed followed Fred here in 1992, and designed the initial "Fred and Ed, CPA" marketing campaign.

Dave Comer, CPA

Dave graduated from Albion College in 2004, and then completed his Masters of Taxation at Grand Valley State. He passed the CPA exam in 2006. Dave has both public accounting (tax manager at a large regional CPA firm) and private company (controller at a local construction company) experience. Dave puts to rest the ongoing argument of who is the best golfer in the firm.

Tyler Scime

Tyler passed the CPA exam in 2014, the same year he graduated from Western Michigan University. He spent the early years of his career at one of the 20 largest accounting firms in the United States before joining GSC beginning in early 2021. When he isn’t researching and becoming more versed in various tax topics, he enjoys woodworking, home renovations, getting out on the golf course, and playing with his dog, Miss Daisy.



Brenda Sherburn

Brenda is a 2002 graduate of Davenport University. Brenda obtained her accounting degree while raising three kids, earning her a second degree of Courage. She is also a Quickbooks Pro Advisor.



Karen Vellom, CPA

Karen spent many years with the large regional CPA firm Plante & Moran. Karen is a CPA who works full-time tax season and half-time in the offseason. She left the large firm that is often a Top 100 Employer, to work for our small firm that for some reason was left off the survey.



Megan Comer, CPA

Megan is a graduate of Albion College (softball player) and MSU (Masters of Accountancy). Megan spent the first ten years of her career specializing in tax and accounting at two larger local CPA firms. Megan is our first hire ever who we didn’t request a resume from… we have known her since she was one year old, and have been recruiting her ever since.

Jim Lewis, CPA

Jim is a retired partner of the local firm Siegfried, Crandall, Vos & Lewis, PC. Jim is a seasonal tax preparer with GSC. Jim was lured out of retirement with a fringe benefit package of unlimited coffee.

Lynn Jessel, CPA

Lynn Jessel also joined the firm for the 2016 tax season. Lynn is a Western Michigan University business major and a Michigan licensed CPA. Lynn worked at another local CPA firm for nearly twenty-five years, with the last half of those as co-owner / partner. Lynn has been very involved with Kalamazoo Loaves & Fishes, and enjoys traveling and gardening. Thankfully, she still likes preparing taxes enough to help us out as well.







Tammie Lewis

 Tammie is our Office Administrator. Her hobbies include golf, home renovation and spending time with her husband, three daughters & son-in-law.  



Community Service


One of the most effective ways we can serve our clients is to stay active in the community. Participating in outside events and professional panels allows us to stay informed of the latest financial developments and information, and to pass this important information along to you.

Here are some of the community activities and services our partners and staff have been involved with over the years.

Treasurers of the following organizations:

  • The Portage Athletic Foundation
  • Deaf and Hard of Hearing Services
  • Heritage Christian Reformed church
  • A Neighborhood association
  • Booster clubs
  • Ronald McDonald Charities


Other community service


  • Multiple mission trips with Catholic Heart Workcamps
  • Business counselors for the Small Business Technology Development Center for over 20 years
  • Heading up the rebuilding of a local church after a devastating fire
  • Coaching and sponsoring a plethora of children's sport teams
  • Teaching Project Charlie in the elementary schools