John M. "Jack" Tanner

Tyler J. Sewell is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Tyler J., who practices law in Denver, Colorado, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Tyler J. is held by other top lawyers in the same geographic and legal practice area.

Jeffrey R. Kesselman is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Jeffrey R., who practices law in Denver, Colorado, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jeffrey R. is held by other top lawyers in the same geographic and legal practice area.

John W. Madden III is a top attorney recognized by Best Lawyers in the practice area(s) of Construction Law. John W., who practices law in Denver, Colorado, has been recognized since 2016. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which John W. is held by other top lawyers in the same geographic and legal practice area.

Tim Tarr is an attorney with Cheney, Galluzzi & Howard Law Firm in Denver, Colorado . His practice focuses on Personal Injury Litigation - Plaintiffs, where he represents individuals who have been harmed by the negligence of others. Tim joined CGH in 2025 after more than a decade working in plaintiff-focused personal injury matters, first beginning in the field in 2013 and practicing as a personal injury attorney since 2017. Tim handles personal injury matters at both the pre-litigation a...

Dimitri Adloff is a business transactional attorney specializing in joint ventures, entity structuring, private company mergers & acquisitions and commercial real estate transactions. Dimitri has significant experience working with sponsors, investors, and developers in connection with single-asset and programmatic joint ventures, fund formations, preferred equity arrangements, and co-GP structures. He represents buyers and sellers in the acquisition and sale of operating businesses, as w...

Quinn Girrens is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Quinn, 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 Quinn is held by other top lawyers in the same geographic and legal practice area.

Jon R. Tandler is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property. Jon R., who practices law in Denver, Colorado, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jon R. is held by other top lawyers in the same geographic and legal practice area.

Nick Fogel is the practice group leader of Burg Simpson’s workers’ compensation department, which has achieved Tier 1 status by US News and World Report (the highest-ranking available). His practice is devoted to those who have been injured while working on the job and in the line of duty. In this capacity, Nick has extensive courtroom experience handling a wide variety of matters. Nick’s practice focuses on the representation of law enforcement, firefighters, and first resp...

Craig S. Nuss, the co-practice group leader of the Construction Defects department at Burg Simpson. His department has achieved Tier 1 status by US News and World Report (the highest-ranking available). Mr. Nuss is a Colorado native born in Brush in 1960. He obtained his undergraduate degree in business administration from the University of Colorado at Boulder in 1982 and graduated from the University of Denver College of Law in 1988. Mr. Nuss begin his legal career the following year with a ...

Ron is head of the environmental practice group and has over 30 years of experience in environmental matters including prior work as a physical scientist for the Denver Regional Office of the U.S. Environmental Protection Agency. He represents all types of clients, including various municipalities and other public sector clients, in environmental matters related to Environmental Compliance Audits, Voluntary Cleanups, Underground Storage Tanks, Asbestos, Water Quality, Air Quality, Hazardous W...