Clinical Staff

Nina Kaiser, Ph.D.


Nina is a licensed psychologist (CA PSY 22555) with over 15 years of experience in working with children and families. She specializes in evidence-based behavioral, cognitive-behavioral, and mindfulness-based strategies to help kids, teens, and parents effectively cope with stress, worry, and emotion. Over the course of time, it became clear to Nina that these are key life skills that everyone needs to learn and practice. She founded PRACTICE San Francisco with the goal of building a community to support all children, teenagers, and parents in learning and applying these research-based strategies in order to live more peaceful and joyful lives.

Nina obtained both her master’s and doctorate in clinical psychology from Purdue University (Indiana) before completing her clinical internship and post-doctoral training from the University of California, San Francisco (UCSF). She remained on at UCSF as a staff psychologist for several years before transitioning to private practice, and still serves as volunteer clinical faculty at UCSF. Nina has received additional training from the Beck Institute, Mindful Schools, the Spirit Rock-affiliated Marin Mindfulness Institute, Little Flower Yoga for Kids, Dr. Amy Saltzman/Still Quiet Place, and Next Generation Yoga. After over a decade of living in the city, she now lives in Marin with her husband and toddler son.


Dina Greenwald

Marriage and Family Therapist

Dina Greenwald is a bilingual (English and Spanish speaking) licensed Marriage and Family Therapist (LMFT #84914) and a Licensed Professional Clinical Counselor (LPCC #731) and has been working with children and families for over 10 years.  Dina has extensive experience working with children, teens and adults in the criminal justice system, foster care system, and school districts.  Dina earned a B.A. in Psychology from San Francisco State University and went on to complete an M.A in Counseling Psychology from the University of San Francisco.  Dina is  trained in many different modalities including: cognitive behavioral therapies (CBT), trauma focused CBT, Family Systems therapy, strength based therapy, motivational interviewing, art therapy and play therapy. Dina specializes in treating anxiety, depression, trauma, PTSD, behavioral difficulties, family conflict and grief and loss.  Dina is especially passionate about working in adoption including, foster care, international adoptions and the adoption trial (adopted persons, adoptive parents and birth families). Dina was adopted from an orphanage in Guadalajara at the age of 3. Being adopted and having bi-cultural adoptive parents taught Dina the beauty of differences as well as the challenges of being able to understand and accept ones own identity and all of its facets.  Dina’s own experiences as well as her extensive experience working with children and families has given Dina a unique ability to tailor treatment specifically for the individual and family to encourage healing and growth.  Beyond treatment modalities, Dina believes that the most important factor for a client’s success is the therapist-client relationship. Dina is a proud San Francisco native who lives in San Francisco with her husband, two daughters and their dog, Eddy.

Stephanie Rooney, Ph.D.

Children and Family Psychologist 

Dr. Rooney earned her doctorate in Counseling Psychology at the University of Texas where she trained in relational and cognitive behavioral therapies. Dr. Rooney recently returned to the Bay Area, where she had attended Stanford University for her B.A. in Psychology. She is a licensed psychologist in the state of Washington (WA license #60207930) and is currently completing a post-doctoral position as a registered psychological assistant under Dr. Kaiser’s supervision in order to meet requirements for licensure in California (CA registration number PSB94023874). Dr. Rooney enjoys working with children, teens, and their families, empowering them to overcome their struggles with anxiety, depression, emotion regulation, and challenges in interpersonal relationships or with parenting. Dr. Rooney approaches each patient with enthusiasm, authenticity, and humor, and crafts individualized, evidence-based treatment plans for each person.

Studio Staff

Alexis Vanni

Studio Coordinator

Alexis is currently pursuing a masters in occupational therapy, interested in working in pediatrics. For the last year, Alexis has volunteered at PlayWrite Therapy, a pediatric occupational therapy clinic, in addition to the Friendship Line, a 24-hour warm line for older adults and individuals living with disabilities. Alexis is passionate about social impact and kids and families. Prior to making a career change to OT, Alexis was a Senior Business Development Manager at Common Sense, a national nonprofit dedicated to helping kids thrive in the digital world. In her role, she managed a broad portfolio of revenue-generating partnerships including AT&T, Comcast, Target, Netflix, among others, and she worked diligently to identify strategic partnership opportunities and execute tactics that delivered value to partners and furthered the Common Sense mission.

In her free time, Alexis enjoys running, practicing yoga and singing. She lives in San Francisco with her fiance, Mike, and their adorable fur baby, Piper, a black and white labradoodle.

Britt Meyer

Instructor: Prenatal Yoga & Postnatal Yoga

Britt walked into her first Yoga class in 1996, and started a long love affair with Yoga. This love challenged her and developed into a true lifelong calling, guiding her through all the challenges and opportunities her life has encountered.

Growing from workshops, retreats, and teachers from all over the world, she would eventually complete 4 years of Yoga Theory and Basics in 1999 while at University, and then, her first teacher training in 2005.

In 2014 Britt became pregnant and everything changed. Her body, breath, life, even identity were in upheaval. Prenatal and postnatal yoga helped her feel her way through the changes in her body and life. It provided her with a space to learn from other mothers, gave her time to connect with her growing baby, and supported her in ways she could not find off the mat. She fell in love with yoga all over again and in a whole new way.

In 2017, she completed her prenatal and postnatal teacher training at Yoga Garden, San Francisco. Britt lives in San Francisco with her husband and two beautiful children.

Sara Isaac

Instructor: Prenatal Yoga & Postnatal Yoga

Sara Isaac, RYT 500, started practicing yoga after trying a myriad of treatments to mitigate her anxiety. She tried and found yoga to be the most effective way to make her more grounded and present. She graduated from the University of Michigan in 2016 and worked in People Operations in the tech industry for a short time before rediscovering, practicing and studying yoga (almost 1000 hours of training at Yoga Garden alone!), and hasn’t looked back.

When Sara teaches yoga, she focuses on alignment, energetics and biomechanics. Her emphasis on alignment––awareness in action––helps people of all ages and abilities practice yoga safely, effectively and skillfully. Sara uses clear instruction and custom modifications to help people become more flexible, stronger and more resilient. Sara teaches and challenges people to incorporate concentration, compassion and mindfulness into their lives, both on and off the yoga mat.

Wipawee Morris

Instructor: Prenatal Yoga

Wipawee was trained as a competitive swimmer from a young age through her later teens in Bangkok, Thailand where she is from. Yoga has been an important part of her life since 2008. Yoga helped Wipawee find her true self and helped her achieve balance in all of her endeavors. Wipawee has her RYT 200-hour yoga teacher certification, in addition to being certified as a pre & postnatal teacher, and kids yoga teacher. Wipawee’s intention is to take learnings from her training experience and combine it with her yoga practice to advance her understanding of what it is to be a yoga teacher. Wipawee is passionate about helping mothers and mothers-to-be, creating a community for them, and guiding them to discover a mindful and safe practice. Wipawee believes Yoga is a relationship that is built between the body, mind, and the breath, and her goal is to share this experience with everyone through her teachings. She believes in health and wellness of body and mind!

Wipawee lives in SF with her husband and two sons.

Bryant Resch

Instructor: Prenatal Yoga and New Moms Series

Bryant discovered yoga over 10 years ago while living in Charlotte, North Carolina. Bryant was an avid cyclist, runner, and lover of all things fitness, but was looking for something a little more strengthening and relaxing. Bryant continued to practice after moving to San Francisco in 2005, but her practice really took off when she became pregnant with her first child in 2009, and she has a special fondness for teaching mamas-to-be. Bryant received her RYT 200 with Dana Damara, studied under Michelle Wing with It’s Yoga Kids, and with Erin Lila Wilson with RISE Yoga for Youth. Bryant is certified to teach yoga to ages 0 to 200 and loves teaching every age! Bryant’s classes are both challenging and invigorating; they link breath and movement and are set to an upbeat and fun playlist. She connects with her students on a deeper level by helping them get out of their minds and into their bodies while not taking herself too seriously. Bryant is also a mom of two little ones, and is passionate about bringing yoga into her children’s everyday lives through music, games, and playful movement. Teaching yoga to children and teens brings Bryant such joy as she sees kids learn to connect to their minds and bodies.

Bryant has a Bachelor of Science in Psychology from the University of North Carolina and is a certified integrative health coach through The Institute for Integrative Nutrition. Her love of fitness, yoga, and overall wellness help her support others through their own personal health and wellness journeys.


Alexandra Rossi

Instructor: Mindfulness

Alexandra is a French native who became a yoga instructor in 2010 after practicing yoga for a decade, with the goal of sharing her passion with women and children. Alexandra specializes in pre and postnatal yoga (ERYT500), and also is a mindfulness educator (ME, MBSR) and a doula (DTI). She has a background in early childhood education and a love for mindfulness and neuroscience, and has taught mindfulness and yoga to children and families in schools across the Bay Area. Alexandra’s classes all incorporate some mindfulness and a focus on relaxing in the present moment.


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