Proud History of Service and Excellence

The Cornerstone Insurance group comes from a long line of Insurance professionals, inspired by 3 generations of independently family owned insurance agencies. Cornerstone has built upon that knowledge to advise our clients with the best outcomes protecting their business, employees and promoting growth while finding the most creative & cost effective ways to achieve this.

As an independent agency, this allows us to search all the top rated insurance companies to fit your business needs. Our excellent rapport with the carriers allows us to negotiate the most competitive program to fit your insurance budget.

If you are not a current client we look forward to showing you what high standards, knowledge and service you have been missing. Cornerstone Insurance Group looks forward to our partnership in helping your business succeed! For our current clients we appreciate the trusted long standing partnership and look forward to continue solving your insurance needs for years to come!



Since my earliest involvement with Lynn Johnston, I have found their company to be world class in many ways.  Their representation of insurance product lines that are important to our employees and company has always been fair, courteous and above all professional in every respect.  Cornerstone’s partnership with MFTA is exemplary of the model to which we would like all our partners to aspire.

– Kathleen Klei, Mitsubishi Fuso Truck of America

Cornerstone provides our company with a plan that is personal to our individual circumstances rather then a plan that is “one size fits all.”  We hold Lynn’s knowledge, professionalism, patience, and competence in high regard & know she always has the best interests of our company at heart. 

– Isabel Santos, Delcon Builders

I have an enormous amount of respect for her skills, and have been more then pleased to work with her on many separate occasions.  She has distinguished herself as conscientious and energetic pioneer in the fields of leadership and management, and we fortunately are able to have the blessings of working with an individual with such traits.

– Frank Tedesco, The Safeway Group

Over the past 15 years our company has been solicited by many insurance brokers.  Each uniquely presents their company as one that will provide our company with the highest level of service and savings but none have measured up to the versatility, expertise, cost savings and rapid response that Cornerstone Insurance provides our company every year.  I recommend Cornerstone Insurance Group to any company who wishes to find an agency that will be a true partner and strong advocate for their company.

– Heather MacHenry, Paul MacHenry & Co.

I continue to recommend Cornerstone Insurance Group due to the degree of professionalism, knowledge of the industry, and work ethic which makes them an easy choice when selecting an insurance broker.

– Debbie Adderly, Eastern Instrumentation

Cornerstone Insurance Group gives us excellent service.  Always willing and able to help us with all our insurance questions and needs. 

– James Economy, Bridor USA

We have worked with Cornerstone for a number of years and through all the changes in healthcare it has been apparent that no other broker could live up to the level of service and knowledge that we receive from Lynn and her team.  I would personally recommend cornerstone to any one who is looking for a company that will go above and beyond for them to be a true partner to their company.

– Jill Spina, Transtar Moving Systems

The fact is that Lynn and Ken make Insurance buying easy. They are there with you from beginning to end and make you feel comfortable that you have made to correct choose in all your Insurance needs. They always step up and take care of any and all  problems that might come up through the year. It is very comforting to know they have your back and very glad I know these wonderful, caring, kind people.

– Tomas Mozer, Theodore Mozer Inc.

As far as we are concerned Cornerstone Insurance is the best broker in the industry.  They keep in close contact throughout the year and advise of any upcoming changes or information helpful to our operation.  Always looking out for our best interests, which is why we rely heavily upon them. 

– Dr. Paul Lukianovich, VMD, Marlton Animal Hospital