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Organizational Excellence Team

The OE team of professionals is dedicated to helping leaders and leadership teams create thriving, sustainable organizations.

Our consultants bring decades of experience, advanced degrees and advanced training in organizational effectiveness, change management, and executive leadership coaching & development to co-create approaches that meet the unique development needs of each of our clients. We are all lifelong learners, consistently seeking out opportunities for ongoing development in service of our clients. Learn more about what drives our work

Barrett McBride, PhD, MCC

  • Organizational Excellence Interim Director
  • Chair, UCD Coaching Community of Practice
  • Director, UCD Executive Leadership Coaching & Development Program
  • Organizational Excellence
Barrett McBride, PhD, MCC is a seasoned executive leadership coach and organizational development consultant. With more than 20 years of experience coaching and consulting, she helps senior leaders and leadership teams create compelling results through transformational change.

Gayle Guest-Brown, MBA, PCC, CPC

  • Senior Organizational Development Specialist
  • Organizational Excellence
Gayle is an accomplished Executive Leadership Coach and leadership development professional. She brings 30 years of successful leadership experience across five sectors of business, corporate, technology, non-profit, ministry and entrepreneurship.

Diane Garga, PhD, PCC

  • Senior Organizational Development Specialist
  • Organizational Excellence
Diane Garga is an accomplished Leadership-Executive Coach and Organization Development Professional with a full range of experience in corporate, higher education, small business, government and non-profit organizations in the U.S. and abroad. She has extensive experience working with corporate, academic and community leaders, small business owners and innovators who are strategizing to enhance their leadership impact, drive innovation and shape effective work cultures and high performing teams. 

Dorothy Lingren, MA, PCC

  • Senior Organizational Development Specialist
  • Organizational Excellence
Dorothy Lingren has worked to develop leaders and organizations for the past 30 years through leading change projects in a variety of companies including Sutter Health, Intel Corporation, and E&J Gallo Winery. Her current focus is partnering with leaders to achieve results related to strategic planning, change management, team development, balancing competing priorities, and communication.

Debbie Ramos, BA

  • Administrative Assistant III
  • Organizational Excellence
Debbie is a highly skilled Administrative Assistant providing high level administrative, operational, planning, and support functions within the Organizational Excellence team. Over her three years with UC Davis, Debbie has worked on numerous change, communication, and training teams and has planned and coordinated logistics for large Change Network meetings and town halls, scheduled and produced live and virtual trainings for groups across the university, and facilitated meetings with executive stakeholders. Debbie brings skills of workshop facilitation, curriculum development, collaboration, excellent communication skills, and enthusiasm to her position at UC Davis.

Vicky Tibbs, MBA, ACC

  • Change Management Consultant, UC Davis Health
  • Organizational Excellence
Vicky Tibbs aims to bring authenticity and fulfilment into the workplace, looking forward at possibilities. Bringing the experience of her 16-year tenure at UC Davis Health, she enthusiastically partners with clients in strategic planning, team building, change management, increasing employee engagement, and other organizational effectiveness projects.