United States Leadership Training Expert
Tammy holds an MBA and has held numerous executive-level positions in Finance, Information Technology, Human Resources, Strategy, and Sales Operations. She has worked as a CPA and business consultant for Arthur Andersen & Company and is an expert at leadership development and P&L management. For many years, Tammy was a consultant to CEOs on leadership, change management, organization, and strategy. Given her passion for leadership, she has developed and facilitated a high school leadership program for low-income girls and served as the executive in residence for a graduate-level leadership program. Tammy is also committed to giving back to her community and has served on numerous community boards focused on the development and empowerment of girls and women. Tammy has published two books and has received many awards for her excellence in community and business leadership.
Featured Webinar
Understand Generational Differences to Build Connected Teams
Featured Ebook

A Leader’s Guide to Navigating the Five-Generation Workplace
Take the Crestcom Leadership Health Assessment
Crestcom’s Leadership Health Assessment consists of 30 targeted questions designed to help companies identify growth areas within their teams based on Crestcom’s 10 Core Leadership Competencies.
Featured Resources
Move Beyond Busyness with Peggy Sullivan
How to Achieve More by Doing Less In today’s fast-paced world, busyness has become a status symbol. But does being busy actually lead to success? Or are we stuck in a cycle of time poverty that leaves us exhausted and unfulfilled? In this episode of The Leadership...
Crestcom Named a Top 100 Franchise for Women by Franchise Business Review
Independent Survey Shows Female Franchise Owners Are Highly Satisfied with Crestcom International’s Performance Greenwood Village, CO, March 2025 – Crestcom International has been recognized by Franchise Business Review as a 2025 Top Franchise for Women. Only 100...
Crestcom International Named a 2025 Top 20 Leadership Training Company by Training Industry
Training Industry Announces Selections for the 2025 Top Training Companies™ Greenwood Village, CO — March 13, 2025 — Crestcom International has been named a 2025 Top 20 Leadership Training Company™ by Training Industry, the leading authority in corporate learning and...
Steve Coleman Joins the Crestcom Network
Crestcom International, LLC welcomes Steve Coleman to its global franchise network. Greenwood Village, CO — Crestcom International is pleased to announce a new authorized licensee, Steve Coleman. He will now offer Crestcom’s award-winning and accredited leadership...