Our Team

We have four full time underwriters on staff. Please direct all inquiries to: underwriting@mbwinsurance.com

Please direct all quote inquiries to: illustrations@mbwinsurance.com.
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Mark B. Williamson

President & Relationship Manager

(631) 730-8262

Mark Williamson is a highly accomplished, results-driven Insurance Executive with more than 25 years industry experience. In March of 2001, Mark established M. Williamson Insurance Services. Mark graduated from the University of South Florida in 1991 with a B.A. in Criminology and was the recent recipient of the 2016 University of South Florida Fast 56 Award, The award recognizes Mark and M. Williamson Insurance Services as one of the Fast 56 Fastest Growing Bull Business of its USF alumni. Mark is also the recent winner of the President's Cabinet from Security Mutual Life. He is happily married with 3 children. Mark is a travel baseball coach and avid snowboarder.

Collette Williamson

Licensing and Contracting

(631) 730-8262

Collette joined her husband, Mark Williamson, in the insurance industry in 2010. In 2011 she became a case manager. Collette currently manages all aspects of the business, from licensing and contracting, application submission, underwriting issues, informal submissions, and agent management. In 1988, she graduated from Katherine Gibbs with an A.S. in Secretarial Science. Collette is a proud mother of three children.

Lori Miller

Senior Case Manager

(321) 574-8736

Lori has been in the life insurance business for the past 7 years and has her Life, Health, and Variable Annuities License. She has worked in both the marketing and new business side. Lori likes to use a proactive approach to review cases to anticipate any future issues and try to offer her agents other options when necessary. Lori joined the M. Williamson Insurance Services team in 2013.

Justin Williamson

National Sales Associate


Justin Williamson graduated Cum Laude from West Virginia University where he earned a Bachelor of Arts degree in Economics and a minor in Criminology.  After he interned with Northwestern Mutual 2018-2019, he knew his passion was in finance and insurance and joined M. Williamson after graduation. In his free time he enjoys snowboarding and jetskiing.

Scott Sorensen

Accounting Analyst/Commissions

(631) 618-9056

Scott Sorensen joined our firm in 2018.  Scott's role will be to handling all commissions.  Scott has been in this position for the past ten years.  When Scott is not working he and his wife split their time running to all of their children's sports and activities. 

Dennis Abi Abdallah

Internal Consultant

(954) 599-9457

Dennis joined our firm in 2022 as an internal consultant. His role includes relationship building with new agents and new business exposure. Dennis is a graduate from FAU in Graphic Design but realized his passion in Business and banking shortly after graduation. He has a background in banking and customer relationship for over 10 years. When he is not fishing with his 2 kids Dennis is enjoying his passion to CrossFit.

Rob Carpenter

Marketing Specialist / Website Support

(631) 730-8262

Rob joined our firm as a Marketing Specialist.  He has been a marketing and website professional for over 20 years. In his "downtime" he is also a freelance musician, producer, multi-instrumentalist. He loves to travel and enjoying time with wife and son.