About GSK


In 1969 Alan R. Saiger and Albert Kasdin, CPA formed the firm Kasdin & Saiger.  Alan and Albert were good friends and were partners for 39 years.  In 1990, Alan and Albert partnered with Robert F. Greenebaum, CPA.  The firm became Greenebaum, Saiger & Kasdin PC.  The firm has grown over the years and has a very loyal client base all over the country.

Our Team

Robert F. Greenebaum, CPA


MBA Harvard Business School
BA - Coe College

Lirong Lin, CPA

Junior Partner

BS & MBA  -   RIT

James Carlin, CPA

Junior Partner

BS & MBA - Niagara University

Alan R. Saiger, CPA

Founding Partner - Passed away in July 2022

Albert Kasdin, CPA

Founding Partner.  Passed away in February 2008

GSK Staff

Rosemary G. Perotto
Enrolled Agent

Rosemary manages GSK and has been with the firm for over 34 years. During her career at GSK she is very fortunate to have grown within the firm and gained invaluable knowledge from Bob, Alan & Albert. She lives in Greece with her husband Todd.

Joanne Parasida

Joanne graduated from Nazareth College in 1987 with a Bachelor of Science Degree in Accounting. She has over 35 years of experience and has been a senior accountant with GSK for over 20 years. She has experience doing tax returns, financial statements, payroll and bookkeeping and is currently a QuickBooks Pro Advisor.

Daniel Kerbs

Dan has over 14 years of experience in the tax and accounting services industry. His background includes tax preparation for individuals and small business, as well as tax planning. Dan enjoys helping business clients resolve problem accounting issues and being of assistance in whatever role the client may need to keep their business moving forward and successful. Dan lives with his wife Karen and 2 dogs (Calvin & Penelope)

Huiling Zhang

Huiling earned her Master of Science in Accounting from Binghamton University. Huiling began her career part-time at GSK in 2018. She devotes herself to comprehensive tax services to personal and business clients with extraordinary commitment, passion, and focus.

Ajay Kumar

Ajay earned his Bachelor’s in Economics from the University of Maryland, College Park back in 2017. In addition, he earned his Master of Science in Accounting from the American University in May 2020. He focuses on personal and business income taxes, including tax planning and tax preparation. He is also pursuing his Doctorate in Business Administration and becoming a CPA.

Linyu Li, CPA

Linyu earned her Master of Science in Accounting from the University of Rochester in 2022. She focuses on both individual and business tax preparations.

Daniel Greenebaum

Dan earned his Bachelor’s in Accounting from RIT. Dan interned at the firm when he was still in college.  Dan has officially joined the firm full-time in 2023. He is currently studying to take the EA exam. In addition, he has been focusing on both individual and business tax preparations.

Shanmeimei Liang

Mei Mei will have earned her Master of Science in Accounting from the University of Rochester in 2023. She interned at the firm for tax season and has since been hired full-time.  She focuses on both individual and business tax preparations. She is also currently working towards becoming a CPA.

Keith M. Preston, CPA

Keith joined the firm in November of 2023 and brings over eight years of experience in the accounting and tax service industry, and is a Certified Public Accountant (CPA).  He is highly motivated and enthusiastic about helping businesses and individuals solve complex problems and achieve all compliance related objectives.  Keith graduated in May 2014 with a Master of Business Administration from Saint Joseph’s University, and also in 2013 with a Bachelor of Science in Business Administration, and earned the CPA designation in 2018.