Henderson, Grealis and Associates PC, CPA

Keep more of what you earn.

About Us

Jim Henderson, CPA

Jim attended the University of Notre Dame and graduated with high distinction from Babson College. He also graduated from the prestigious Boston Latin School. In 1983, he founded what eventually became Henderson, Grealis and Associates. He presents numerous seminars on tax planning, real estate, home ownership, college planning, and other topics of interest for his clients and associates.

Sean Grealis, CPA

Sean is a graduate of Westfield State University. After working in the private sector, Sean joined the firm in 1995. His main focus is working with small business clients. He also works with numerous professional athletes around the world.

Mike Ahlstedt, CPA

Mike is a graduate of University of Massachusetts Amherst, and he joined the firm in 2018. He works with small business and individual clients.

Ellen Fleming, EA, CFP®

Ellen graduated magna cum laude from Taylor University with a bachelor's degree in chemistry. After working in biomedical research and technical service, she changed careers and joined the firm in 2004. She became an Enrolled Agent in 2009 and earned the CFP®  designation in 2019. Ellen is our individual tax manager and focuses on individual, trust, and estate tax returns.

Joanne Halnen, EA

Joanne is a cum laude graduate of Eastern Nazarene College and is an experienced staff accountant of over 20 years. She joined the firm in 2001 and manages corporate tax returns, as well as clients' bookkeeping and accounting needs.  Joanne has been a QuickBooks Pro Advisor since 2005 and became and Enrolled Agent in 2012.

 

Alison Klump, EA

Alison joined the firm in 2021 and became an EA in February, 2024. She is also an IRS Annual Filing Season Program participant. Alison has extensive experience with rental property both as an owner and manager and also worked as a Real Estate Broker.

Angie Lowery, Admin Coordinator

Angie joined the firm in 2020 and handles much of our client communications.
  Prior to joining the TaxSense team, she worked for the University of South Carolina for more than 20 years providing technical support to faculty and students in the Department of Distributed Learning. In addition, she and her spouse owned and operated a small business for eight years. 

Heather McCarthy, Accounts Payable/Receivable

Heather primarily works in our Braintree office.  In addition to her admin responsibilities, she also helps the tax team by answering client calls.

Deb Parillo, Administrative Assistant

Deb can be found at the Plymouth office and you are likely to hear her pleasant voice when calling the firm.