CSI Medical Billing Cost-Effective Solutions to Your Bookkeeping Headaches    
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CSI Bookkeeping, Inc
CSI Bookkeeping, Inc.
251 Mountainview Avenue Suite 7
Nyack, NY 10960

Phone: 845-533-5209
Fax: 845-357-3574

WELCOME to CSI Bookkeeping, Inc.

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About Us

CSI Bookkeeping – Founded in 2014, CSI Bookkeeping, Inc. is focused on providing quality bookkeeping, payroll, and business services.  Our CFO and head accountant, Colleen LaValley, has over 20 years experience in the accounting industry. Not only did she work for Michael Bloomberg, she has worked with numerous small businesses over the years.  Robert Trenczer, COO, is a trained expert in organizational efficiency. He has helped Ford Motor company maximize their profits and is excellent at automating processes ensuring smooth business operations.

Robert Trenczer

Bobby attended West Point and received a BS in Physics from MIT. At Ford Motor Company, he helped save more than a million dollars annually as a certified 6-Sigma Black belt – a trained expert in quality and efficiency. For the past 10 years he has grown CSI Medical Billing exponentially. And as a Goldman Sachs 10,000 Small Businesses Scholar Bobby is excited to begin a new venture.  

Colleen LaValley

Colleen attended Saint Thomas Aquinas College and received a BS in Accounting. After 20 years working for Major Corporations such as  Harsco Corp., Martin Geller CPA Firm & Bloomberg Inc., Colleen spent 8 years raising her children while continuing to work for small business owners in a consulting/bookkeeping capacity. Throughout the years she's noticed small business owners do not have easy access to a reliable and consistent bookkeeping service which led to this new business venture.