Diemer Accounting & Tax Service, Inc.
Professional Tax Services

Our Staff

Here at Diemer Accounting & Tax Service, Inc., our talented staff has the expertise to meet the needs of our diverse client base. Why not take a few minutes and get to know the most experienced and knowledgeable tax and accounting professionals you'll ever meet?


Ruth Diemer, President.  Tax Consultant Expert.  Ruth, the founder of Diemer Accounting & Tax Service, Inc., has been preparing tax returns for 44+ years.  She specializes in individual and trust tax returns.  No return is too complicated for Ruth to handle.
Contact Ruth at: RDiemer@diemeraccounting.com  


Ken Diemer, Vice-President.  Business Management Specialist.  Ken is an expert in analyzing your business need and helping your business grow and remain profitable.  Ken is involved in all aspects of accounting and tax services for our clients.  He has been preparing tax returns for 27 years and specializes in partnership and corporation tax returns.  Another area of Ken's expertise is rental real estate as he is a partner in rentals himself.  He attended Grand Valley State University for four years.
Contact Ken at: pacecar@diemeraccounting.com


Beth Becker-Keen, Accountant.  Beth handles complex accounting functions on some of our biggest clients.  Beth specializes in retail accounting.  She has worked for Diemer Accounting for 20 years.  Beth attended both Kalamazoo Valley Community College and Davenport College.
Contact Beth at: bethbeckerkeen@diemeraccounting.com


Christie Wisniewski, Accountant/Payroll Specialist.  Christie is our payroll extraordinaire.  She handles all aspects of payroll from payroll processing to monthly and quarterly payroll reports.  Christie not only handles payroll for clients locally, but also can handle payrolls for clients across the United States.  Christie graduated from Baker College with an Associates Degree in Accounting.  She has worked for Diemer Accounting since 1992.
Contact Christie at: ChristieWisniewski@diemeraccounting.com


Kim Baker, Administrative Assistant.  Kim comes to us with over 30 years of experience in industries which include; manufacturing, transportation, controls integration, real estate and distribution.  Just look for the smile when you enter our front office!
Contact Kim at: kim@diemeraccounting.com


 

Kristy Gray, Accountant/QuickBooks Pro Advisor.  Kristy holds a Bachelors Degree in Accounting from Baker College along with over 6 years of Accounting experience, and specializes in QuickBooks.  Kristy can help you set up your QuickBooks and offer continued support and training.  Kristy also has experience with MAS accounting software. 
Contact Kristy at: kristy.gray@diemeraccounting.com

 

Mark Rett, Accountant/QuickBooks Specialist/Tax Preparer.  Mark can handle any aspect of your business needs from getting your QuickBooks up and running, handling any accounting issues and even preparing your tax return.  He has over 30 years of experience in both the private and public sectors.  Mark has an MBA degree from Western Michigan University.  He is also a financial advisor helping people accumulate and build wealth and advising businesses on affordable retirement plans.
Contact Mark at: markrett@diemeraccounting.com


Melissa Kooyers, Accountant/QuickBooks Specialist.  Melissa handles accounting functions for many of our clients.  Melissa graduated from Davenport University with a Bachelors degree in Accounting.
Contact Melissa at: melissakooyers@diemeraccounting.com


Rob Dale, Accountant/QuickBooks Specialist.  Rob specializes in accounting for our clients using QuickBooks.  Regardless of location, Rob can help both the small or large businesses get QuickBooks up and running.  Rob can come up with solution to help meet your business needs.
Contact Rob at: robdale@diemeraccounting.com


Wanda Ridlington, Tax Preparer.  Wanda has been preparing tax returns for 28 years.  Wanda prepares all aspects of individual tax returns.  Her expertise in individual tax returns extends particularly to daycare returns, as she was once a daycare provider herself for many years.
Contact Wanda at: WandaRidlington@diemeraccounting.com