Carter Mario, the personal injury lawyer who is synonymous with his ubiquitous “Get Carter” ads, has acquired some experienced legal help. His Carter Mario Injury Lawyers firm has hired at least five attorneys – including one who is a physician and another who is a nurse – from the former Sinoway, McEnery, Messey & Sullivan firm in North Haven.

Former Sinoway attorneys Gerard McEnery, Robert Messey, Gayle Hacker Sullivan, Joseph Rossetti and Pamela Cameron have joined the Carter Mario firm. With Messey a physician and Sullivan a registered nurse, the staff additions are expected to provide a shot in the arm to Carter Mario Injury Lawyer’s medical malpractice expertise.

The additions will raise the number of Carter Mario lawyers statewide from 17 to 22.

In a related move, Barry Sinoway, a founding partner of the Sinoway firm, is expected this week to join Kennedy Johnson D’Elia & Gillooly LLC, in New Haven, whose partners include John Kennedy, president of the Connecticut Trial Lawyers Association.

Mario said the addition of the Sinoway attorneys cements and expands a relationship that began more than a decade ago when his firm started referring complex medical malpractice claims to the North Haven firm. “Medical malpractice is a very technical area of the law. Their expertise is really unique,” Mario said.

He said the former Sinoway lawyers were drawn by his firm’s ability to draw and serve clients. At the same time, Mario was impressed with the depth and breadth of the litigation experience and medical malpractice expertise offered by Messey and Sullivan.

“We have great mutual respect for each other’s firms. Our strength is tremendous customer service. Their strength is litigation skills,” Mario said. “We are bringing together two businesses that the common strengths will now blend in to where we can offer just a much better product for the clients.”

Messey was a doctor at St. Vincent’s Medical Center in Bridgeport for 13 years, three of them coming after he earned his juris doctorate from Quinnipiac University School of Law in 1994. An adjunct professor of law at Quinnipiac, he was awarded a medical degree in surgery in 1984 from Drexel University College of Medicine.

Hacker Sullivan worked at Sinoway for 16 years, focusing on medical malpractice. She has a bachelor of science degree in nursing and a juris doctorate from Rutgers University School of Law.

Mario, whose marketing campaign ranges from ads emblazoned on buses to mobile phone apps, has dramatically expanded his firm since it started as a general practice in Milford. The firm now has offices in Bridgeport, Hartford, Milford, New Britain, and Waterbury.