Jonathon D. "Jon" Bergman

Mr. Ninneman litigates complex commercial and construction disputes in state and federal court and arbitration, representing owner/developers, general contractors, design-builders, subcontractors, architects, engineers, and suppliers on private, public and hybrid projects, including heavy civil infrastructure, sports arenas, schools, hotels, hospitals, mass transit, roadways, industrial warehousing, and renovation and development of apartments, multi-family, mixed-use and single family reside...

Tom concentrates on complex litigation matters, including wrongful death, toxic tort, asbestos, insurance defense, and product liability. In addition, Tom has a particular emphasis on railroad litigation, including Federal Employers’ Liability Act (“FELA”) cases. Tom joined the Law Firm of Knudsen, Berkheimer, Richardson & Endacott in 1987 and was made partner in 1991. While in Nebraska, he also served as Adjunct Professor in Trial Advocacy, Evidence and Civil Clinic at ...

Heidi uses her life experience to bring a practical and relatable approach to her estate planning practice. She advises clients on a wide variety of estate planning matters, including estate and trust administration and pre and post-marital agreements. Additionally, Heidi has experience with real property, business and entity formation and general consultation, and commercial leases and contracts. Heidi is a member of the Orange Book Forms Committee and the Rules and Forms Committee of the Co...

Ashley advocates for outcomes that enable families to make the smoothest possible transition during an otherwise stressful time of life. She is committed to seeking peaceful resolutions while also zealously advocating for her clients. Whether clients are going through a divorce, custody dispute, financial disputes, or any other family law matter, it is Ashley’s goal that her clients feel as though their issue has been resolved with dignity. While not all cases can be resolved outside of...

Darin J. Gibby is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. Darin J., who practices law in Denver, Colorado, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Darin J. is held by other top lawyers in the same geographic and legal practice area.

Holly Baer Kammerer currently focuses her practice on personal injury, products liability, and commercial litigation. She has practiced law since 1992 and has vast experience in litigation and all trial-related aspects of personal injury cases and business disputes. After moving to Colorado from Washington, D.C., she has also practiced in the areas of family law, collections, insurance, mass tort, recreational vehicle, equine, and appeals. Ms. Kammerer joined Burg Simpson in 1996 and became a...

Denise A. Cook is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Denise A., who practices law in Denver, Colorado, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Denise A. is held by other top lawyers in the same geographic and legal practice area.

About Timothy Timothy G. Tarr is an associate attorney with Ciancio Ciancio Brown, P.C. and a member of the Personal Injury and Criminal Defense Teams. Tim earned his Bachelor of Arts in Political Science from the University of Colorado at Boulder in 2010. In 2017, he earned his Juris Doctor from the University of Denver Sturm College of Law. While attending law school, Tim started his career as a law clerk with Ciancio Ciancio Brown, P.C. and remained with the firm after becoming an attorney...

More than a decade of construction litigation and contract drafting experience. Provides practical solutions to clients’ business challenges. Experience ranges from relatively small disputes to multi-million-dollar claims in state courts, federal courts and arbitration. In his construction-focused practice, Kevin Walsh provides developers and construction professionals with a wide range of legal services, including contract drafting and negotiation; dispute avoidance and de-escalation; ...

James G. Heckbert focuses his practice on claims involving personal injury and wrongful death, ski injuries, auto and truck collisions, construction site negligence, medical malpractice, gas explosions, and defective products. In a distinguished career spanning four decades, Mr. Heckbert has secured eight jury verdicts in excess of $1 million. He has obtained numerous other settlements and judgments for amounts also exceeding $1 million. Mr. Heckbert is a member of the Multi-Million Dollar Ad...