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

  • Manager, Organizational Excellence; Founder, UCD Coaching Community of Practice; Director, UCD Executive Leadership Coaching Program
  • Organizational Excellence
Barrett McBride, PhD, MCC, is a seasoned executive leadership coach, organizational development consultant, and leader. At UC Davis, her current focus includes leading a team of senior consultants and coaches, evoking a servant leadership approach. “This team is composed of creative, multi-talented professionals who are at their best when they are free to use their considerable expertise in partnership with their clients, to create the most effective approach for each client and each engagement,” she says. “I do my best to create an environment for them to do their best.”

Tiffani Francis, CPC

  • Senior Organizational Development Consultant, UC Davis Health
  • Organizational Excellence
Tiffani Francis, CPC, has over 20 years of experience in the healthcare management and leadership field. With her experience as an organizational development and leadership coach, Tiffani can relate to the complexities that healthcare leaders navigate while making their vision a reality. Tiffani’s professional interests include developing high-performing teams, leadership effectiveness, performance acceleration, stakeholder engagement, work culture strategy, relationship-centered communication, and change management.

Diane Garga, PhD, PCC

  • Senior Organizational Development Consultant
  • Organizational Excellence
Diane Garga, PhD, PCC, 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. 

Maryam Ghadiri, PhD, ACC

  • Senior Organizational Development Consultant
  • Organizational Excellence
Dr. Maryam Ghadiri is a Senior Organizational Development Consultant with Organizational Excellence. Her work over the past decade has focused on learning and development, coaching, and curriculum design focused on applications in higher education, non-profit organizations, and small businesses. Maryam is passionate about leadership development, team performance, and strategic planning. She brings extensive experience and expertise to address organizational challenges by applying research-based and people-centric methodologies. She partners with leaders, teams, and organizations to identify barriers to engagement, develop leadership skills, increase innovation, improve effective communication, and create supportive workplace cultures.

Gayle Guest-Brown, MBA, PCC

  • Senior Organizational Development Consultant & Executive Coach
  • Organizational Excellence
Gayle is an accomplished Equity Leadership Strategist, 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 with a passion for Diversity, Equity, Inclusion, and Belonging leadership work.

Keven Brahim Kaddi , MFA, LDSS, CLDP

  • Senior Organizational Development Consultant, UC Davis Health
  • Organizational Excellence
Over the past decade of Keven Brahim Kaddi's career, he has served as a learning and development architect, designer, and facilitator of talent development programs across individual contributor, manager, and leadership levels throughout the employee lifecycle. Keven Brahim has extensive experience across a diverse array of industries including entertainment, financial markets, professional services, non-profit disaster response, and academia. He is motivated by a desire to address organizational challenges at their sources via practical, scalable, people-centric designs that, when implemented effectively, yield sustainable improvements over time.

Dorothy Lingren, MA, PCC

  • Senior Organizational Development Consultant
  • Organizational Excellence
Dorothy Lingren has worked to develop leaders for the past 35 years as a consultant in a variety of organizations including healthcare, manufacturing, wine, government agencies, higher education, and high tech. She is currently focused on coaching leaders to achieve their goals related to strategic planning, change management, team development, balancing competing priorities, and communication.

Adrienne Mead, MSOD, SPHR

  • Interim Manager and Senior Organizational Development Consultant, UC Davis Health
  • Organizational Excellence
Adrienne Mead's work over the past fifteen years has been at the intersection of Organization Development, Learning, Change, and Human Resources. Adrienne uses this combined perspective to help teams and organizations achieve their desired realities. Adrienne has special interest and expertise in team performance, change planning, employee engagement, talent management and leadership effectiveness.

Leticia Montana, MSOD, ACC

  • Senior Organizational Development Consultant, UC Davis Health
  • Organizational Excellence
Leticia Montana is an experienced leadership coach and organizational development strategist with 17 years of expertise across a variety of industries, including healthcare, financial services, biopharmaceuticals, tech, and management consulting. As a coach, she is recognized for her ability to guide her clients along their leadership journey while amplifying their voice, staying true to their values, and leading with authenticity. As a strategist, Leticia focuses on building people-centric solutions that tackle gaps in organizational design, culture, and skills/capabilities.

Debbie Ramos, BA

  • Program Assistant III
  • Organizational Excellence
Debbie Ramos is a highly skilled Program Assistant providing high level administrative, operational, planning, and support functions within the Organizational Excellence team. Over her four years with UC Davis, Debbie has worked on numerous change, communication, and training teams and has planned and coordinated logistics large Change Network meetings and town halls, scheduled and produced live and virtual trainings for groups across UC Davis campus and UC Davis Health, 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.