Meet Our Team

For years I have kept my eye on the horizon and brought two friends with me: fortitude and patience. Believing all along that the time will come when there is a demand for a new approach to behavioral health. The time is now, for emotional well-being to be understood as a right not a privilege. Behavioral Fitness is a new approach for all of us to work better together.

Dr. Allyson Mayo

Dr. Allyson Mayo

Dr. Allyson Mayo, DBH, the  Founder of Behavioral Fitness Today, has 20+ years of experience working with inpatient psychiatric service providers, homeless services, addiction treatment centers, integrated healthcare quality and process improvement, and Fortune 100 companies. Dr. Mayo has developed groundbreaking tools, programs, lectures, and workshops based not only on her vast professional experience but also on her own extraordinary journey that started as a curious teen who left her family and everything familiar to find herself. And did she ever. But that’s another story for another time. Or perhaps a book. Dr. Mayo is a Doctor of Behavioral Health and an industry expert educating on how to prescribe “Lifestyle Medicine” for the root causes of maladaptive behaviors. Through her revolutionary approach of Behavioral Fitness, she carves out a much needed new path exceptional mental health. A professor at the University of San Francisco and a county mental health representative, she is committed to seeing that our communities become behaviorally fit.

Our Team

At Behavioral Fitness Today, we work closely with a diverse team of experts in our community dedicated to the pursuit of wellness in all aspects of our lives.

Kathryn Howe

Kathryn Howe

Kathryn Howe is the Director of Healthcare Digital Transformation, Americas Sales, ‎at Cisco where she helps healthcare organizations develop and execute their vision for digital transformation. She has over 20 years of experience in both the healthcare industry and technology shaped by a personal interest in behavioral health and a formative experience working with the founder of the Haight Ashbury Free Clinic. Her industry-leading model for digital transformation has helped hundreds of companies apply technology to improve performance in operations, merchandising, logistics, and clinical and staff communications, as well as patient and customer experience. Kathryn has helped executives in the retail, hospitality, and healthcare industries navigate successful digital transformations, combating disruptive market forces and creating next-generation digital companies that are winning and growing.

David Smith, MD

Dr. David Smith is a national leader in addiction medicine, the psychopharmacology of drugs, and new research strategies in the management of drug abuse problems. The founder of the Haight Ashbury Free Clinics of San Francisco, he has been honored as one of the “Best Doctors in America.” Dr. Smith is a distinguished fellow and past president of the American Society of Addiction Medicine and the California Society of Addiction Medicine, as well as former medical director for the California State Department of Alcohol and Drug Programs and California Collaborative Center for Substance Abuse Policy Research. He is the chair of addiction medicine for Alta Mira Treatment Centers and medical director for Center Point, and an adjunct professor at the University of California, San Francisco.

Sahar Berjis, RD

Sahar Berjis, RD, MPH, CDN

Sahar Berjis is a Registered Dietitian, Nutritionist, and founder of Inner Health & Wellness, a functional nutrition practice in Walnut Creek, California. She has a BS in Nutrition and a MS in Public Health from Tulane University. Sahar has been the key speaker at numerous academic and nutritional conferences—John Muir speaker series, NYU, Columbia, American Dietetic Association, American Homeless Association, New Jersey Nutrition Conference—where she has addressed the importance of good nutrition. In 2000, Sahar is a certified Kid’s Yoga instructor (Yoga Karma, New York City) and loves teaching yoga to children.

Julie Cohen, RN

Julie Cohen, RN, is a psychiatric and addiction nurse with over 10 years of experience. She is the founder of Steps 4 Recovery in Berkeley, California—a safe and nurturing environment that aims to support people in achieving sustained recovery through structure and authentic connection. Her father, with a long journey of addiction, inspired her passion for Addiction Medicine and her commitment to the well-being and recovery of those affected by addiction. She works closely with the Steps 4 Recovery team and is always available to provide support to residents.

Isabela Lara

Isabela Lara

Bio coming soon!

Tanya Parmley

Tanya Parmley

Tanya Parmley is a Personal Trainer and Coach and founder of Freedom Coaching. She has over 30 years of experience and believes that health and wellness are necessities. Through moderation and taking baby-steps to building healthy habits, every person can be successful. We are given each day to discover new and creative ways to be active and it should be fun! Fitness is truly about creating joyful experiences and not a "one size fits all" approach. Enjoy the journey - it's all about you!

Sonja Singh

Sonia Singh

Sonia Singh has a Master’s degree from Tulane University’s School of Public Health & Tropical Medicine, is a graduate of University of California, Davis’ Professional Coaching for Work & Life program, and is certified by the International Coaching Federation. She specializes in helping individuals reach their full potential, building confidence in their abilities, reaching that next level of success, and accomplishing even the most challenging goals. Sonia has coached over 2000 people in developing leadership skills, including assertiveness, public speaking, team engagement, managing feedback, inspiring others, managing emotions in the workplace, problem solving, communications, goal setting, efficiency, and decision making.

Marise Zimmerman

Marise Zimmerman, MAAT, ATR-BC

Marise Zimmermann is an art therapist, Board Certified by the ATCB (Art Therapy Credential Board), a SoulCollage Facilitator, and an artist-photographer. She has a Master of the Arts in Art Therapy from the School of the Art Institute of Chicago. She was a pioneer of art therapy in the South of Brazil and has presented her work in conferences and workshops in both countries. Marise was the supervisor of the Expressive Arts Therapy Department at the John Muir Behavioral Health Center for 13 years; she has a comprehensive knowledge of the theories and clinical skills used in art therapy. Her work focuses in developing healthy strategies, emotional resilience and empowerment through the art making and creative process. The exploration of different perspectives and possibilities when managing life experiences creates new dialogues and improves the quality of life for individuals, their families and their communities.