About Donald

img_8872I am Donald H. Sienkiewicz and I am the owner of Estate Preservation & Planning Law Office. I help individuals, families, and business owners in Massachusetts and New Hampshire avoid unnecessary taxes, legal entanglements, and asset loss while preserving the security and freedom you have worked so hard to achieve.




  • New Hampshire Bar Association Board Of Governors – County Governor: Hillsborough South
  • Member, National Academy of Elder Law Attorneys
  • Member, New Hampshire Bar Association Elder Law, Estate Planning, and Probate Section
  • Attorney, Rath, Young & Pignatelli, P.C., Concord, NH 2005-2009
  • Associate, Goodwin Procter LLP, Boston, MA 2003–2004
  • Massachusetts Land Court, Law Clerk to Chief Justice Peter W. Kilborn  Boston, MA 2002–2003
  • NH Bar Association Leadership Academy, 2010-2011
  • Director, Greater Manchester Homebuilders Association, 2009-2011
  • Trustee, Pine Hill Waldorf School, 2008-2010
  • Rappaport Honors Program in Law and Public Service, 2001
Admitted in Massachusetts (2002) New Hampshire (2005)


Northeastern University School of Law
Boston, Massachusetts
J.D., May 2002

Boston University
Boston, Massachusetts

  • B.A. Magna Cum Laude
    Economics May 1994
  • B.A. Magna Cum Laude
    Environmental Policy May 1994