Our mission is clear

We leverage partnership, integrity, and communication to provide top-quality insurance premium auditing services to clients throughout the United States.


We work to develop a partnership with you that is based on integrity and open, honest communication.


We hire only the best auditors – those with the right experience for your needs and the right focus on building relationships. We also provide continuing education opportunities so that our team is on the cutting edge of premium audit service trends and technologies.


We focus only on those clients which we can serve most effectively, with an emphasis on quality of work rather than quantity.

Audits Simplified

We utilize simple yet elegant, customizable audit reports that are available in electronic and hard copy, including all pertinent imaged records. We ensure top audit quality with thorough reviews of each report for content and accuracy. Our success is driven by our team – not only their deep experience in premium audit but also their passion for customer service and dedication to the highest level of service available in the industry.

Our Customers

"ISG is our primary premium audit in partner in Florida. The ISG team is well-trained and provides quality audits with minimal errors.  They are also very responsive to our questions and needs, completing their audits with minimal direction."

Karan Clark ( Premium Audit Manager; Tammy Rothell, Field Auditor; Mid-Continent Insurance Group, ISG Customer since 2012 )

"I choose ISG because of three main factors; strong communication skills, integrity, and transparency. I have confidence that ISG will communicate with me regarding all aspects of an audit and will take better care of my business than others in the industry. I have been working with ISG for several years and feel that ISG offers a top-quality audit for a reasonable price.”

Michael Warner ( Premium Audit Manager, Builders Insurance Group., ISG Customer since 2010 )

"We've worked with Brian at ISG for almost 20 years. ISG thinks outside the box to develop solutions specific to customer needs. They provide excellent value for work rendered, and are very communicative. Whenever issues arise we are confident ISG will communicate and manage them promptly and appropriately."

Laurie Pieters ( CPCU, CIPA, APA; Premium Audit Compliance Manager, Artex. ISG Customer since 2008. )

We help you build success!

Our auditors
years experience
We achieved
place in 2019 Inc. 5000 List of Fastest Growing Companies
We have
completed over

Meet Our Team

President / CEO

Brian Thornton

As the founder of ISG, Brian’s unique approach to business sets the tone for how ISG does business. His unique focus on integrity, communications, and relationships ensures that the ISG Team focuses on delivering excellent auditing services for customers across a wide spectrum of industries and policies. In the premium audit field for over 25 years, Brian formed ISG in 2007 with a focus on providing insurance carriers a premium audit outlet with the best experience available on the market. For over 10 years, Brian has used his subject matter expertise and industry background to assemble a high-performance staff of the best premium auditors in the industry. His vision that a premium audit company could operate on par with many of the insurance carrier audit departments has resulted in ISG landing the only spot for an insurance auditing firm on the Inc. 5000 List of Fastest Growing Privately Held Companies in America two years running. Brian is a great husband, father of two kids, and an avid boater who enjoys living near the water in beautiful St. Petersburg, Florida.

Lead Reviewer

LaVon James

LaVon James has been an Auditor and Auditor Trainer with ISG for almost 10 years. Her 30-plus years of insurance industry experience prior to joining ISG ensures her clients that they receive the best audit possible. LaVon’s career spans from personal lines policy issuance and underwriting to Senior Auditor. She is an expert in dispute resolution, cross-functional team leadership, and auditor training. LaVon holds a certificate in General Insurance and has worked with clients across the Southeast. She and her Goldendoodle enjoy gardening, swimming, and waterfront dining in Central Florida.

Quality Reviewer

Jessica Welch

Jessica Welch has been helping ISG clients achieve flawless insurance premium audits since 2014. With her previous experience as a field auditor for Builders Insurance Group and AIG, Jessica’s strong analytical and detail-oriented skills help her better understand how her customers do business, delivering better audits. Jessica started in auditing after graduating with a BS in Accounting and Finance from North Georgia College and State University. Jessica resides in the beautiful North Georgia mountains and enjoys family time, running, and painting.

Quality Reviewer

Joy Sykes

Joy brings more than 30 years of experience in customer relations, accounting, and auditing knowledge to the ISG-SE team. Her diverse background from customer relations to entrepreneur ensures her customers receive excellence in customer service from an auditor with deep understanding of financial reporting. She has a B.S. in Accounting from the University of North Carolina at Greensboro and specializes in general liability and PEO audits as a member of the ISG Audit Review Team. Joy resides in Greensboro, North Carolina and loves family time, especially cooking, sports, and beach trips.

Executive Auditor

Bil Danielson

Bil Danielson comes to Insurance Services Group with over 20 years of experience in premium audit. Bil’s experience includes multi-line premium audit including Workers Compensation, General Liability, and Commercial Auto. Bil has wide-ranging experience as an independent auditor, audit consultant, audit reviewer, and as a staff auditor for two of the largest insurers in North America. Bil earned both his Accounting degree and MBA from the University of Wisconsin System and also holds the APA designation. Bil is also a very active cyclist riding with the Smyrna Bicycles Cycling Team in the Atlanta area competing locally and nationally in both mountain and road events.

Audit Coordinator

Amy Kelly

Amy is a graduate of St. Petersburg College and has led administrative duties at ISG since 2011. With a strong background in project management, Amy keeps the ISG Team ticking, delivering flawless audits every time. Amy is a mother and dog lover. In her spare time, she loves kayaking, watching her favorite shows on NetFlix, and visiting Weeki Watchee Springs State Park.