At its core, Slevin and Slevin, Esqs. is a family business.

All of our attorneys are deeply rooted and enthusiastically involved in their local communities: We’re your neighbors, golf partners, and the friendly faces in line at the local coffee shop down the street. We work hard to give our clients the best client experience and most favorable results possible, and our reputation is of the utmost importance to our firm. 


Michael J. Slevin

Fueled by Starbucks*, Michael is logical, thorough, and passionate. He has been running circles around opponents in personal injury cases since he was born. Well, perhaps not that long, but he did build up his endurance running from his older brother Mark as he was chased around Stony Brook Village as a child. Now, Michael and his wonderful wife Cheryl take turns running with their beloved dog Twinkie, and young-adult twins, Conor and Megan. 

*This firm does not receive any monetary value from the Starbucks conglomerate for this marketing – though if offered, we wouldn’t say no!

Degrees and Accreditation:

  • Graduated from Fordham College with a B.A. in Economics in 1982

  • Graduated from Fordham Law School with a J.D. in 1985 

  • Member of the NYS Bar Association since 1986

Practice Areas:



Mark V. Slevin

Mark has a love of all things “property”. He is an expert in the drafting of Wills and Trusts, Real Estate Transactions and homeowner and commercial property claims.   He has a strong work ethic and enjoys building relationships with his clients. When we can successfully kick him out of the office, you may find him on the golf course, playing his guitar, or taking walks on the beach with his lovely wife Stacy and their dog Brandy.  

Degrees and Accreditation:

  • Graduated from Utica College with a B.A. in Business & Accounting.

  • Graduated from Touro Law School with a J.D. in 1989.

  • Member of the NYS Bar Association since 1989

Practice Areas:



Aidan B. Slevin

The youngest member of the family firm, Aidan continues to soak up the knowledge and expertise offered by his father and uncle while holding his own in real estate and insurance law cases. Specializing in real estate transactions, Aidan has handled hundreds of closings for buyers, sellers, and lenders. A lover of all things outdoors, he can typically be found on an adventure with his dog, Archie, or laying in his hammock with a guitar. 

Degrees and Accreditation:

  • Graduated from The University at Albany with a B.A. in Classical History and Archaeology

  • Graduated from Touro Law School with a J.D. in 2015

  • Member of NYS Bar Association since 2016

  • Member of the Suffolk County Bar Association since 2017

  • Recipient of the Special Service to the Public and Community Award in 2015

Practice Areas: