Who we are

The MMC Difference

Clients seek MMC when leadership decisions carry real consequence—when scrutiny is high, timelines are compressed, and the cost of error is material. In these moments, surface-level assessments, generic frameworks, or AI-generated recommendations are insufficient. Insight must withstand challenge. Judgment must hold under pressure.

MMC was founded on the belief that the deeper forces shaping leadership performance often remain hidden – rooted in psychology, relationships, culture, and context. Our work exists to illuminate these dynamics so leaders and boards can move from uncertainty to informed judgment.

Interpretive Depth

We are qualitative researchers with deep expertise in organizational psychology, developmental psychology, and ethnography. We make sense of complex human realities shaping enterprise outcomes. We go beneath surface level observations. We listen to what is said, unsaid, and avoided. We lean into contradictions. We examine outliers. We acknowledge disconfirming evidence. And we maintain that deep human insight requires human intelligence – augmented, not replaced, by technology.

Truth With Care

We are empathic truth-tellers and steady partners in consequential moments. Where others hesitate, we ask essential questions. Where others accept narratives, we test reality. Where others avoid paradox, we lean in. Where others manage optics, we tell the truth. We go where the evidence leads—without fear or favor—delivering uncommon human insight, applied with courage and designed for performance that endures.

Systems Lens

Leaders operate within complex ecosystems. Performance is shaped not only by individual capability, but also by relational patterns, power dynamics, culture, context, and the broader geopolitical environment. We seek to understand and assess leaders within their full ecosystem, through full executive team assessments, 360 evaluations, cultural analysis, and succession planning.

Peak Performance

We bring decades of experience working alongside investors, boards, and executives in complex, performance-driven environments. We maintain a laser focus on business imperatives and understand leadership within the realities of enterprise accountability. Our insight is predictive, contextually informed, and aligned with long-term value creation, and our recommendations are designed to stand up at the board and investor level.

Expertise That Informs Judgment

MMC’s consultants bring doctoral-level training and deep experience in the study of human behavior and leadership systems.

Dr. Angela Mouton

MANAGING PARTNER

Ph.D (Positive Organizational Psychology) 
J.D (Equivalent), BS (Zoology & Ecology)

I hold a Ph.D in Organizational Psychology, a Law degree specializing in Environmental Law, and a B.S in Zoology and Ecology. After almost a decade practicing as an Attorney at multinational law firms, I moved into Management Consulting in 2010. I specialize in human capital due diligence, executive assessments, board effectiveness, executive search, and organizational development. Prior to MMC, I was a Management Consultant at ghSmart and AlixPartners, Attorney at Hogan Lovells, Baker & McKenzie, and Freshfields, and Chief People Officer in corporate environments.

Notable human capital clients have included CPP Investments, AlixPartners, mid-market PE firms and their portfolio companies, Teachable, Denny’s, PlayStation, and Dave & Buster’s.

Core Values: Possibility, Peak Performance, and Freedom.

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Dr. Monica Montijo

MANAGING PARTNER

Ph.D (Positive Developmental Psychology)
M.A. (Evaluation Science), BA (Psychology)

I hold a Ph.D in Positive Developmental Psychology, a Master’s degree in Psychology & Evaluation Science, and a BA in Psychology from Harvard University. I am also a proud two-time Ivy League Harvard softball champion.

After completing my undergrad degree, I taught in K-12 public schools and coached basketball and softball at the youth, high school, and collegiate levels.  For the last decade I have specialized in leadership advisory work, partnering with a variety of high performance, education, and business clients around the world.

Core Values: Family, Love, and Excellence.

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Dr. Sheilesha Willis

PRINCIPAL

Ph.D (Organizational Behavior)
BA (Psychology), Board Certified Executive Coach

I hold a Ph.D. in Organizational Behavior from Claremont Graduate University and am a Certified Executive Coach. As a human capital practitioner, I have spent the last 15 years (a)scaling talent development as well as culture and excellence programs, and (b) leading large organizational transformations during high-growth periods at various technology and Fortune 500 companies, including AECOM, Robinhood, and Aurora Solar.

My expertise includes coaching executives on how to build high performing cultures by guiding them through the process of identifying and leveraging their individual strengths and growth areas, building high-performance teams, and advancing access, inclusion, and learning across their organizations. I leverage human-centered, strengths-based leadership development approaches to unlock excellence in individuals and teams. Other areas of focus include change management, strategic workforce planning, People operations, M&A, and global well-being and social impact programs.

Core Values: Curiosity, Courage, and Compassion.

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Dr. Heather Buffington Anderson

PRINCIPAL

Ph.D (Ethnomusicology) 
B.A. (Music Performance & American History)

I hold a Ph.D. in Ethnomusicology from the University of Texas at Austin and a Bachelor of Music with an American History minor from the University of Northern Colorado. My human capital expertise includes qualitative research/ethnography, board effectiveness, corporate governance, workforce development, and executive education.

I began my career as a professor at Historically Black Colleges and Universities (HBCUs), where I integrated workforce competencies into academic programs and established internships to prepare students for the workforce. More recently, I served as Senior Director of Inclusive Governance Initiatives at Santa Clara University, leading the Black Corporate Board Readiness program. In this role, I partnered with executives and senior leaders to help them navigate career transitions, develop governance acumen, and achieve meaningful professional goals. In addition, I developed programming focused on board effectiveness and inclusive governance practices.

Core Values: Curiosity, Excellence, and Partnership.

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