Meet Our Consultants

TSNE's pool of consulting and executive transition experts represent the wide range of skills, interests and backgrounds that make up the nonprofit sector.

Catherine Bradshaw

Catherine Bradshaw is an organizational development expert with over 25 years of consulting experience. In her nine years as a member of TSNE’s consulting pool, Catherine has helped numerous organizations explore and discover paths to building greater capacity and mission effectiveness. She is highly skilled in facilitation, strategic planning, board development, leadership coaching, transition consulting, and results-based accountability. Catherine earned her MA in Whole System Design and Organization System Renewal from Antioch University and MSW from University of Washington. She holds certifications in The Art of Transformational Consulting, Interim Executive Leadership and Transition Management, Advanced Board Consulting, and Emotional Intelligence and Diversity for Teams, among others.


Cathy Cohen

Maintaining stability and shepherding growth for organizations have been the hallmark of Cathy Cohen’s 25 year career as a consultant to for- and nonprofit clients. Since joining TSNE’s consultant pool in 2008, Cathy has served as a transition consultant and interim executive director in a variety of fields including healthcare, education, homelessness, supportive housing, news media and community development. Cathy’s areas of expertise include strategic planning, marketing, organizational transitions and assessments, executive search, board development and communications. She works especially closely to help organizations experience growth in the areas of social justice and diversity. Cathy holds an MBA from the University of Massachusetts, Amherst.


Deborah Langstaff

Deborah Langstaff brings over 25 years of experience as an organizational development consultant and executive coach in public and private sectors, both nationally and internationally. Her clients, ranging in size from small grassroots organizations to large nationally- and internationally-based groups, have included community-based organizations, schools, women’s organizations, environmental groups, immigrant rights organizations, and others. As a growing area of specialization, Deborah is sought out for her expertise in designing and facilitating processes to address complex inter-relational and systemic issues within and between organizations, including mergers and strategic partnerships. Deborah has an MSW from the University of Washington, and an Ed.D from Harvard University focusing on organizational change and multicultural relations. She is certified and experienced in mediation, negotiation, and Open Space Technology.


Digna Scott

With contributions spanning over 15 years in the public, private and nonprofit sectors, as well as numerous community leadership positions, Digna has earned the reputation of being an organizational development leader with broad-based expertise in strategic thinking, problem analysis, change management organizational learning and talent development. Digna’s client engagements have been in human services, community services, arts and culture, education and membership associations. Digna offers her clients a unique perspective and unparalleled creativity resulting from extensive global travel to over 70 countries, a multicultural experience and multilingual abilities with fluency in Spanish, Portuguese, and Italian. She holds an MS in Education from the University of Pennsylvania, an MBA from Boston University and is currently enrolled in University of Pennsylvania’s Ed.D Chief Learning Officer Executive Program


Doris Roach

Doris Roach has a dynamic background as an attorney, professional coach and higher education instructor. After 15 years practicing business law as a senior attorney with a major Fortune 500 Company, Doris left the legal profession to follow her passion for helping individuals and organizations realize their potential for growth and transformation. Doris’ nonprofit consulting portfolio includes over ten years of strategic planning, board development, executive coaching, leadership development, and team building services to organizations in community development, education, government, healthcare, housing, human services, philanthropy and social justice advocacy. Doris holds a JD from Northeastern University School of Law is a professional certified coach. In addition to her consulting practice, Doris is an award winning artist, a meditator and yoga dance enthusiast and enjoys adventurous travel to far-flung locations like Ethiopia, Peru and Tibet.


Gregg Davis

Gregg Davis has worked with clients as an interim executive director and on projects in executive transition, organizational assessment, and strategic planning from a variety of fields including affordable housing, community development, education, foundations, human services and supportive employment. Gregg brings significant national and international executive level experience in vision and strategy development, fundraising, board development, leadership transitions, finance and budgeting, executive coaching, organizational partnerships, meeting and workshop facilitation, public speaking, mergers and restructuring, and nonprofit “turnarounds.” In his 25 years of nonprofit experience, Gregg has served as a nonprofit co-founder, CEO, COO, and in multiple development positions. Gregg holds an MBA from Columbia University.


Jeremy Phillips

Jeremy Philips’ background includes over 20 years as a facilitator and trainer for mission-driven, social justice organizations locally, nationally, and internationally. He has significant experience in the fields of youth development, grassroots social change, public health, violence prevention, and the arts. Jeremy’s clients regularly voice their appreciation for his collaborative approach, and share that this approach pulls the best and most creative thinking out of individuals and groups to bring about lasting results. Jeremy holds a MEd from the Harvard Graduate School of Education and currently sits on the Board of Directors for Voces de Cambio, and formerly served on the Global Advisory Board of the Open Society Foundations’ Youth Initiative.


John Tarvin

John Tarvin has significant experience working in the fields of charter schools and education, community development, human services, membership associations, museums, and social entrepreneurship organizations. In addition to his work as a consultant, John has served as a founder, president, executive director, COO, CFO and chief development officer of a highly diverse set of for-and nonprofit organizations. Active in his community, John has served as Mass. Development Charter School Facility Fund Advisory Board member, New York and Massachusetts State Education Department charter school evaluator, Echoing Green fellowship reader/evaluator, the Town of Milton’s warrant committee member, and Milton Public Schools’ long-range planning committee member. John holds a MS in Computer Information System from Bentley University and is an ICF Certified Coach.


Nancy Jackson

A charter associate of TSNE MissionWorks’s consultant pool, Nancy Jackson has over 30 years of executive-level nonprofit and government experience. Nancy has served clients from a wide variety of nonprofit sectors including housing, philanthropy, arts administration, humanities, theater, environmental, youth, social justice, and social services.  

Nancy brings expertise in facilitation, knowledge of shared leadership, and practical experience as a founding executive director. She is a Certified Facilitator and Qualified National Mentor Trainer for the Institute for Cultural Affairs in Technologies of Participation facilitation methods. Additionally, Nancy holds an MSW from Boston College with a concentration in community organizing/social planning.


Patricia Duarte

Prior to joining the TSNE MissionWorks consultant pool in 2006, Patricia Duarte had built a solid career as a corporate human resources executive and an independent consultant specializing in organizational transition development, HR management and executive search with for- and nonprofit organizations. Patricia’s mixed-race background has provided her with unique opportunities to experience and navigate America’s racial divide and learn from both positive and negative experiences. In addition to having earned a BA from the University of Cincinnati, Patricia is a certified practitioner of various individual assessment and coaching tools and group process facilitation methods including Institute of Cultural Affairs Technology of Participation Group Facilitation Methods, Executive Transition Management, High Impact Hiring, and Lominger Leadership Development Architecture.