We Believe
Team matters. Relationships matter. Coaches matter. Community matters. Impact matters. Client experience matters.

The CoachSource Network

The CoachSource® Network is the largest community of rigorously vetted executive coaches around the world. Our coaches are designated CoachSource Qualified CSQ ™. Only 25% of coaches who apply meet our rigorous screening criteria.

We continue to curate our CSQ Coaches Network with a global reach of over 1,200 professionals who live and/or coach in over 160 countries.

About Our Leadership

Our Principals are accomplished and recognized executive coaching industry leaders, who continue to shape the industry for what organizations need now and in the future. 

Brian O. Underhill, Ph.D., PCC

Founder & CEO

Brian is our Founder and CEO, and an industry-recognized expert in the design, management and innovation of global executive coaching program implementations for organizations around the world.

Brian is an author, frequent keynote speaker, executive coaching innovator and coaching community leader.

He earned his PhD in organizational Psychology from the CA School of Professional Psychology, and holds a BA in Psychology from USC.

Brian resides in San Jose, California with his family, and is an avid traveler.

BRIAN’S FULL PROFILE

Tracey Bertolina

Chief Financial Officer

Tracey leads the finance organization inside CoachSource. She brings 30+ years of experience in accounting, financial reporting, and financial planning across various industries.

She prioritizes continuous improvement and enhancement of systems and financial analysis.

Tracey is a Certified Public Accountant, with a Master’s Degree in Accounting from California State University, Los Angeles.

Mary Dombrowski

SVP, Client Engagement

Mary oversees CoachSource’s account teams working with current clients, as well as creating and developing new client relationships.

She has over 30 years of marketing and business development experience working in and with Fortune 500 companies including Time Inc, Conde Nast and Lightolier, now part of Royal Phillips.

Mary holds an MBA from New York University, and a BS in Marketing from Drexel University.

She resides in Atlanta and enjoys great weather, hiking and travel.

Jeff Nally, PCC, SHRM-SCP

Chief Coaching Officer, Chief Human Resources Officer

Jeff leads our coach community, coaching practices, and human resources. Prior to joining us in 2016, he established and led executive coaching at Humana for nine years.

He is co-author of Rethinking Human Resources, Humans@Work, and When Work Works.

He is recognized as one of “Twenty People to Know in Human Resources”, by Louisville Business First, and an award recipient of the Thomas J. Leonard Coach Humanitarian Award.

Jeff resides in Venice, Florida with his family and enjoys sunrise yoga on the beach.

Request

A Coach

Meet Our Team

At CoachSource, we value every voice. Maybe that’s the reason so many of our original team members are still with us, and why those who have returned to be with us again.

We share a vision for serving our client partners beyond expectations, showing up fully and authentically, and inspiring leadership everyday.

Client Services Team

Diane Bailey-Boulet

VP, Strategy and Client Success

Zia Best

Director, Coaching Services; DE&I Lead

Andrea Buell

Director, Coaching Services

Charmaine Kwame

Director, Coaching Services

J’Aimee Mission-Moon Ph.D.

Director, Coaching Services

Selen Iskenderoğlu, MS.

Manager, Coaching Services

Laurie Lawton

Manager, Coaching Services

Laura Parks

Manager, Coaching Services

Erica Postell

Manager, Coaching Services

Allegra Sass

Manager, Coaching Services

Our Support Team

Patty Ainsworth

Coach Associate, Sr. Executive Administrator

Kathleen Diekmann

Security Analyst/IT Administrator

Jackie Giardiello

Accounting Associate

Angie Voorhees

Accounting Manager

The caliber of diversity, equity and inclusion of CoachSource’s coaches network is unparalleled in the industry.

“We switched from prior coaching vendors to partner with CoachSource because their coach population better mirrors our leadership population.”

– Global F500 Client

Our DE&I Commitment

Our commitment to diversity, equity and inclusion across race, gender, age, religion, identity, disability, and experience drives us forward as we work to cultivate global leaders, attract, and retain world-class coaches, and build measurable, impactful leadership programs.

We aspire:
• to foster an inclusive culture that encourages and celebrates the diverse voices of our clients, coaches, and employees.
• to leverage the diversity in our coach community to best meet the needs of diverse leaders and organizations.
• to coach and develop leaders regardless of gender identity or expression, sexual orientation, religion, ethnicity, age, neurodiversity, disability status, citizenship, or any other aspect which makes them unique.

Brian O. Underhill

Angie Voorhees

Jackie Giardiello

Kathleen Diekmann

Patty Ainsworth

Allegra Sass

Erica Postell

Laura Parks

Laurie Lawton

Selen Iskenderoğlu, MS

J'Aimee Mission-Moon, Ph.D.

Charmaine Kwame

Zia Best, CPIC

Diane Bailey Boulet

Andrea Buell PCC PMP