Ashley I. Kissinger

Patricia A. Riley is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law, Family Law Arbitration and Family Law Mediation. Patricia A., 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 Patricia A. is held by other top lawyers in the same geographic and legal practice area.

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 ...

Tom Macdonald has substantial experience across a broad spectrum of transactional real estate, and real estate and land use litigation, with three distinct specialties: (1) real estate transactions, (2) workouts, foreclosures and bankruptcy, and (3) land use and constitutional litigation. Tom represents commercial lenders with a particular emphasis on loan foreclosures, workouts, bankruptcies and mechanics’ lien litigation. In addition, Tom represents clients in all types of real estate...

David Zwisler is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management. David, 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 David is held by other top lawyers in the same geographic and legal practice area.

Mark serves as head of the firm’s Family Law Group, and has been since joining the firm in 1972. In 1985, he limited his practice to focus exclusively on divorce matters. As one of the leading attorneys in the field, Mark handles cases involving pre-and post-marital agreements, sophisticated property settlements, negotiated settlements, permanent order trials, child-related issues and extensive mediation and arbitration. He also serves as a mediator, settlement master and arbitrator in ...

Mr. Montoya manages the litigation department and has over twenty five years' experience as a trial lawyer. He has participated in more than sixty trials and arbitrations. He has successfully defended numerous complex civil litigation matters, including high-exposure and class-action cases. He also has expertise in providing risk-management advice to corporations. In 2006, Mr. Montoya was elected to the American Board of Trial Advocates, an organization with a primary mission of preserving th...

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...

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

Stephen J. Dietrich is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Mergers and Acquisitions Law. Stephen J., 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 Stephen J. is held by other top lawyers in the same geographic and legal practice area.

Mr. Fleishman’s practice emphasizes creative, aggressive representation of firm clients in the areas of divorce, pre and post nuptial agreements, commercial, construction, personal injury, professional liability, employment law, bad faith, and insurance litigation. His expertise in the creation of medical and legal risk management programs and procedures for clients, as well as drafting and analysis of insurance contracts, is well recognized. Mr. Fleishman was selected multiple times fo...