Red Leaf has served many industries such as pharmaceuticals, law, fashion, marketing, technology, banking and electronics. Our coaches are all performance professionals with a business focus.

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Stacee Mandeville: Founder

In her over thirteen years of experience coaching executives in presentation skills, communications and accent reduction, she has delivered training to individuals on nearly every continent, in nearly every industry, including law (Fish & Richardson P.C., Kirkland Ellis), Fortune 500 Companies (Merck, HP, General Electric, Levis), and small to mid sized businesses (Ballantree Consulting, TAE, Fabio Scalia, Affinia Hotels). She had used her accumulated experiences with clients from all over the world, combined with her theater background to create the Red Leaf method of "Muscle Memory" training. (Patent Pending)

Stacee was classically trained in theater at New York University, (B.F.A.) and has additional experience in team building, professional development, accent modification and mentoring. She remains active in the arts as a stage and film actor, director, and jazz vocalist.


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Adam Rose: Accent Specialist - West Coast

Adam is an accent reduction teacher, dialect coach, and actor with close to 20 years of voice/speech work and training.  Adam has taught workshops at Queensborough Community College, the Los Angeles Public Library, AFTRA national headquarters, National Conservatory of Dramatic Arts, and numerous schools, theater companies and acting studios throughout the country.  He's studied at The Lee Strasberg Theater Institute, Playwrights Horizons, The Theater Lab of Washington, DC, British American Drama Academy, and NYU's Tisch School of the Arts.  Adam has also trained with internationally-recognized SLP Elizabeth Peterson (MEDS-PDN), and dialect coach/author Robert Blumenfeld. He is based in Los Angeles.

Dr. Brad Thomason: Public Speaking Coach

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Dr. Brad Thomason received his Ph.D. from Louisiana State University in 1993.  He did his internship at University of Southern California Medical School-Los Angeles County Hospital.  He then did a post-doctoral fellowship at Emory University Medical School.  He stayed on at Emory for six years following his fellowship as an assistant professor in the Department of Family Medicine.   He moved to New York City in 2000, where he worked for five years as a Project Director/Clinical Supervisor at Hunter College’s Center for HIV Educational Studies and Training.  He has consulted on research projects at Columbia-Presbyterian and Cornell Medical Center as well.  He now has a private practice in Manhattan.  In addition, Brad is a professional actor with numerous film, television and theater credits.

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Maxwell Zener: Public Speaking Coach

Max Zener has been a communications and writing coach for many years and has collaborated with such businesses as MindShare and Verizon. Max has also worked with an industry-leading education and test preparation company for eight years, developing significant portions of their curriculum and their teacher-training program. Some of his trainees have gone on to be among the most successful teachers in the company. Max has received their Teacher of the Year and Trainer of the Year honors. As an actor, Max has appeared Off-Broadway, regionally, and in several independent films. Max is a graduate of Wesleyan University, where he received degrees in both Biology and Theater.

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This was the best training I have been through; I had never had training like it. So specific, targeting our issues and giving concrete tools to help us adjust. I love the one-on-one aspect of it-the private coaching and video review is the most helpful part of the course. I would highly recommend this training.
— Peter Hack