Whether you reach out by email, phone or use the Request Information form, your first conversation with ROI Corp will be with one of our two partners, Gary Rayberg or Denis Mezheritskiy. Business owners or active buyers have our highest respect and we want you to experience that from the very beginning.

Additionally, since you can’t be expected to sort through the bios below in detail, this conversation will allow us to accurately assess your needs so we can introduce you to the team member(s) who are best suited to serve you. After meeting, we will be happy to provide you with contact information to speak with some of our former clients. Most of our new clients come from referrals!

GARY RAYBERG, CBI, M&AMI

Founder

Gary has started, managed and sold seven successful service companies. He brokered his first business in 1983 as a result of being asked to help sell a firm he had once owned and sold to a buyer who wanted to move on again. The buyer in that first brokered sale was none other than Rico Petrocelli, formally of the Boston Red Sox. Gary went on to start and run service companies in the fields of commercial landscaping, janitorial services, office coffee service, moving and storage, telemarketing and corporate employee relocation. Each company was sold once goals were reached. Gary was also one of the initial stockholders in the agent buyout of Bekins Van Lines, a national moving and storage firm. Licensed in real estate since 1984, Gary has been involved in the negotiation for sale of businesses and/or real estate in over 30 states and several foreign countries. He was President of the New England Business Brokers Association in 2012 and 2013, a founder and current Chairman of the Board of the area’s only business MLS type system, the Business Brokers Alliance of New England. He is past president of his local Rotary Club and currently sits on several other boards. He is a member of the Institute of Business Appraisers and the IBBA (International Business Brokers Association) where he has earned the CBI (Certified Business Intermediary) designation. Gary also holds the credential of M&AMI (Mergers and Acquisitions Master Intermediary) from M&A Source of Atlanta, the world’s largest international organization of experienced, dedicated merger and acquisition intermediaries representing the middle market. He is one of less than 150 M&A professionals in the world to hold the M&AMI designation which is awarded based on education, completed M&A transactions, and peer review. Gary believes “education is the cornerstone of ROI’s competitive edge.”

Gary and his wife Lisa have three children and currently split their time between Boston’s south shore and the lakes region of NH.

DENIS MEZHERITSKIY

President

An entrepreneur, Denis is originally from Kiev, Ukraine. He earned his Bachelor Degree of Science in Finance from Suffolk University in Boston. In 2005, He gathered several investors and purchased the Produce Company of New England, Inc. where he served as the company President. He quickly expanded the company within 5 years, supplying state contracts, employing over 20 employees, and overseeing every aspect of running a business. In 2009 Denis purchased P.A. Milan, a distribution company out of Wilmington, MA, which he merged with the Produce Company of New England, Inc. In 2014, He sold his share of the produce company to his business partner to focus on expanding Moving Forward Physical Therapy, a Physical Therapy Clinic that he opened with his wife in 2010. His wife, Jane is a Physical Therapist and together they have spread their practice to two locations, in Bedford MA and Framingham MA. Their practice is actively involved in local community and Denis is a member of the New England Physical Therapy Network.

GEN TONY DUMAYAS

Office Administrator

Gen Tony is a graduate of Secondary Education major in English, with a strong passion for communication and organization. With over four years of experience in the real estate industry, she has built a solid background in both client relations and administrative management.

She began her career as a Real Estate Cold Caller, where she developed excellent communication skills and the ability to connect with potential clients effectively. After two years, she transitioned into an Office Administrator role, where she handled daily operations, managed schedules, maintained records, and supported real estate teams to ensure smooth and efficient workflows.

Combining her educational background with her real estate experience, she demonstrates professionalism, adaptability, and attention to detail in every task, making her a reliable and results-driven professional in any team environment.

Marketing Coordinator Employment Opportunity

LYN TRIFFLETTI

VP of ROI's Medical Division & Business Broker

Lyn Triffletti, a former CEO and Owner of PCA (Physician Chart Auditors), a former Executive Vice President of Regulatory Affairs and Compliance Officer at a local Boston Hospital. She joins ROI as a VP of our Medical Division with over 33 years of Healthcare Industry experience in the areas of practice management, billing, coding, revenue cycle management and more. Lyn is well known in the Boston area and understands the value of private healthcare organizations. She has achieved great success in sales while running her own consulting company and welcomes the opportunity to do the same for you!

TOM BOYD

Business Broker

Tom started his career, as an entrepreneur, by opening The Bridge House Restaurant at age 17 while in his senior year of high school. By the end of the year he sold it to his chef. Following in his father’s footsteps he joined the U.S. Coast Guard. During his time in the service he earned an Associate’s Degree in Business Management at the College University of New York. After completing a second tour of duty, Tom returned home to Maine and started a trucking company: East Branch Delivery Services, Inc. Tom built it from nothing to approximately seven million in gross sales with over 60 employees and ran it as the President for 30 years.

Having sold the trucking company (using ROI Business Brokers) Tom brings this vast experience to his current career as a Business Broker. He specializes in transportation and distribution companies. Tom also works with other types of businesses such as Manufacturing and Service creating long term relationships with the owners and sharing his personal experience of having successfully created, and followed through with, an exit strategy leading up to successfully selling his business.

DON BUEHLER

Business Broker

His career started as a store manager with McDonald’s Corporation, where he worked his way up to the ownership of 6 franchises, which he operated for 15 years. Don sold these to pursue his own restaurant concept, Krazy Karry’s Backyard Grill, which he operated for 7 years.

Don brings a wealth of practical, operational and technical knowledge to any deal. He can empathize with business buyers and sellers, and analyze how to best help them achieve their goals.

Don is a graduate of UMASS Amherst, Bachelor of Business Administration. He has held several leadership positions in his business community, and is also active in his local community. He lives in Woburn with his wife of 30 years, Carolyn. They have 3 daughters and 1 son in law. He enjoys walking, fishing, and the ocean

DAN TOUHEY

Business Broker

Dan began his career in sales and later specialized in product management. He spent 12 years with Spalding Sports, the last 6 as Vice President of Marketing where he oversaw all consumer marketing, product development, and licensing. He was also responsible for managing the critical relationship with the National Basketball Association as the official game ball supplier. Dan went on to become founder and President of PSI 91, a sporting goods company that imported basketballs, footballs soccer balls and volleyballs and distributed them to national retailers such as Dick’s Sporting Goods. PSI 91 secured an exclusive license agreement with the Under Armour brand, a deal Dan negotiated in 2010. PSI 91 grew to over $14 million dollars in annual sales and was profitable in each of its 10 years in business. A successful exit was achieved in 2020.

Dan brings a unique combination of corporate know-how coupled with a deep understanding of the challenges distinct to starting and growing a fast-moving small business. Because of his entrepreneurial experience and successful exit, Dan brings vast expertise to those contemplating a business sale or transition.

Dan graduated from Boston College and earned a Masters of Business Administration from New York University. He has served on the Boards of Good Sports and the Northampton Little League. Currently he volunteers for Catholic Charities of Springfield and the Western MA Food Bank. Dan and his wife Priscilla have 2 children and live in Northampton, MA.

JOE MCGRATH

Business Broker

Prior to joining ROI Business Brokers, Joe was the founder and president of a food service company. The company provided corporate catering, vending machine service and cafeterias. The company grew from an initial $10,000 investment to over eight million dollars in annual sales. Joe was responsible for 80% of that growth. Joe later sold his ownership interest and became Director of Sales and Marketing.

Earlier in his career, Joe was the founder and president of a residential real estate company. As a real estate broker, Joe trained and motivated his salespeople and engaged in a variety of transactions. Joe graduated from the Boston College School of Management and participated in several fund raising campaigns for the school. He was a candidate for State Representative, Chairman of the Bylaws Committee of Middleboro and Chairman of the Ethics Committee of the South Shore Board of Realtors. He was also active for six years in the headquarters administration of the U.S. Military Police. Joe resides in Hingham.

PETER SPANOS

Business Broker

Peter Spanos presently serves as ROI's Vice President of NH sales. Peter's background is quite varied. He has been in the hospitality business for over 40 years in NH where he owned and operated a full-service Resort Hotel and presently owns a luxury vacation rental business. He also served in the NH Legislature for three terms on the powerful House Finance Committee. Peter was appointed by the Governor to the Opioid Abatement Commission in 2020. In addition, he is presently Belknap County Commission Chair and serves as a board member of the Laconia Airport Authority, his hometown.
In 2017, The Speaker of the NH House appointed Peter as a Commissioner to the Lakeshore Redevelopment Planning Commission charged with facilitating one of the largest transfers of state-owned property to the private sector in the state's history. Peter has been married for 33 years to his wife Sharon and has two adult children.

JOEL NIMAR

Business Broker

Joel Nimar is a proud graduate of Northeastern University business school. After NU, he worked for national, and international computer distributors and a software company before being hired as general manager of a global computer reseller. He later co-founded and managed a multi-million-dollar computer reseller and maintenance company for 29 years. After successfully selling the company to a large maintenance company, he became its vice president. Joel enjoys changing problems into opportunities and finding creative solutions that work for all involved. Joel is a serial entrepreneur who founded a home energy audit company and bookkeeping and consulting company. He also purchased and managed commercial real estate.
Joel Nimar is actively involved in his community, co-founding a branch of a food pantry in Concord and Maynard, MA, while serving as its vice president and involved in development and governance at a historic estate and cultural center in Falmouth, MA. He currently serves as the treasurer of a nonprofit theatre company.
Joel has been married for 36 years and has two adult children. When not working, he enjoys being at the beach with friends and family. He is an active tennis player and golfer and enjoys cycling on Massachusetts rail trails.

“ I get great satisfaction from helping others figure out their long-term goals and helping them achieve them.”
I joined ROI because of their great reputation in New England and the breadth of expertise they have in industries like yours. They have systems in place to understand and maximize the value of your organization. Call me, and together, we can be true partners.

JONATHAN GHRIST

Business Broker

Jonathan Ghrist is an entrepreneur, investor, and operator with a background that spans public service, construction, and real estate development. A former firefighter and finish carpenter turned real estate professional, Jonathan built a successful sales team and investment business before co-founding a private real estate and development firm. Drawing on years of hands-on experience in the trades and deal structuring, he brings a builder’s mindset and investor’s discipline to his work in mergers and acquisitions. As an M&A advisor with ROI, Jonathan combines operational depth with a sharp eye for value creation, specializing in service-based and construction-related companies. His approach is grounded, strategic, and relentlessly growth-oriented—helping entrepreneurs plan their exits, maximize value, and uncover new opportunities for growth.