Sara Anderson
Director of Integrated Behavioral Health, Adult

Sara oversees all of Encompass’s Adult Integrated Behavioral Health programs, which include both residential and outpatient services that offer a full spectrum of trauma-informed, evidence-based mental health and substance use disorder services for adults.

Sara is a Watsonville, California native who grew up inspired by the richness, beauty and diversity of the south county community. She completed her undergraduate degree in psychology at the University of California, Santa Cruz, and then her master’s degree in social work at San Jose State University. As a bi-lingual civil servant, she began working with individuals and families in Santa Cruz County providing therapeutic services. The past 10 years as a clinical social worker taught her the importance of individualized and holistic care for people to achieve life change.

Sabina Iles
Director of Integrated Behavioral Health, Youth & Family

Sabina oversees Encompass’s Integrated Behavioral Health, Youth & Family service area, which includes programs designed to support children, youth, young adults and families who are working to increase positive behavior, cope with trauma, navigate the juvenile justice system, improve parenting skills, reduce alcohol and drug use, and successfully transition to adulthood.

Sabina has a master degree in health administration, and a long history of working with diverse populations of seniors, foster youth and their foster families. She has a passion for and commitment to her community.  She has spent her career supporting her community in different capacities, and as a bilingual person she has been able to reach diverse populations and devoted time to bridged services with underserved populations.

Throughout her 17 years as a social worker and social work supervisor, she has grown to appreciate and value people for their differences. Always fostering a culture of inclusivity, diversity, and equity, Sabina believes that when we address inequalities, we are able to provide safe environments for all those around us. When we listen and understand disparities, we are all able to work hand-in-hand towards the common goal of creating a better place, and a better world.

Dr. Bobby Singh
Medical Director

Dr. Singh serves as the senior clinical leader across all medical service areas at Encompass including residential treatment, withdrawal management, outpatient behavioral health, and Medication for Addiction Treatment (MAT). He oversees clinical quality, ensures compliance with medical protocols and regulatory standards, and guides the integration of trauma-informed, culturally inclusive care across our programs.

Dr. Singh brings extensive experience in addiction medicine and a strong commitment to helping individuals and families heal. He completed his undergraduate studies at St. Thomas University in Houston, TX. He then worked as an Internal Medicine hospitalist at several hospitals across the country, including in Arizona and Nevada. Later, Dr. Singh completed a two-year fellowship in Addiction Medicine at Stanford University where he trained under nationally recognized leaders in the field. Dr. Singh is also Co-Founder and Director of The Key Addiction Treatment Center, a physician-led program offering intensive outpatient therapy and residential rehabilitation in Santa Cruz and Monterey counties.

Tristan Mayo, MSN, PMHNP-BC, PHN
Director of Nursing & Health Services

Tristan and our Medical Director partner to develop and supervise medical systems throughout Encompass's adult and youth integrated behavioral health programs.

Tristan holds a Master of Science in Nursing from Vanderbilt University and is both a Board-Certified Psychiatric Mental Health Nurse Practitioner and a Certified Public Health Nurse. She began her nursing career in Santa Barbara, working for the county’s behavioral health unit while volunteering to provide free medical care to unhoused individuals. Since joining Encompass in 2014, Tristan pioneered the role of Registered Nurse within the organization’s mental health residential and outpatient programs, developing and implementing protocols that were formally recognized for improving care. She was then promoted to Director of Nursing and Health Services for the organization, where, in partnership with the Medical Director, she leads the integration and expansion of medical services across programs, including Medication for Addiction Treatment services, infectious disease prevention and control, overdose prevention and response, onsite residential medical care, onboarding of certified peer support specialists, and behavioral health student nurse rotations.

Johanna Molnar
Senior Manager for Transition-Age Youth

Johanna Molnar is a licensed psychologist with over 20 years of experience. She graduated from the University of Texas, Austin with a Ph.D. in educational psychology and specializes in serving children, adolescents, and families from diverse backgrounds. 

Johanna has worked in a variety of settings, including outpatient clinics, school districts, private practice, universities, and hospitals. Her former professional roles include serving as an Attending Psychologist at Stanford University Medical Center, a Counseling Psychologist at the University of California, San Diego, the owner of two successful private practices, and a School Psychologist for the Elizabeth School District in Elizabeth, Colorado. Johanna also served as an original Board Member and assisted in creating and launching Parker Performing Arts School in Parker, Colorado. She is an accomplished researcher and a published author. Johanna is a Santa Cruz native, who is deeply invested in making a positive difference in the lives of youth and families in her community.

Desirae Allen
Manager, Family Programs

Bio coming soon.

Bio coming soon.

Joanna Snawder
Development & Fundraising Manager

Joanna joined Encompass in 2025 as Development, Fundraising, & Grants Manager. Her primary role is to create and activate a fundraising strategy for the organization, in alignment with the mission, vision, and values. This involves maintaining the existing efforts to secure grant funds, solicit donations and coordinate fundraising opportunities, while also evolving that portfolio into new territory.

A graduate of Mills College of Oakland, CA (now merged with Northeastern University), Joanna began a career in non-profit work focused on the health and equity education of youth in the California Bay Area. This led to professional opportunities in the Higher Education sphere beginning at Saint Mary’s College of California in Moraga, where she also completed her Master of Arts in Leadership. From there she held roles within campus-based women’s centers as Associate Director and Director, at Metropolitan State University of Denver and Northeastern Illinois University of Chicago, respectively. She returned to California in 2015 to work at California State University Monterey Bay, where she led the Care Team for 9 years, while also founding and developing the Basic Needs services for students. To build capacity in that area, she grew her development skills via grants, fundraising campaigns, donation drives, working with private donors, and more. Being part of Encompass animates her own values to bring these critical services to the community by making health and wellness attainable for all.

Sarah Tisdale
Director of Compliance and Quality Improvement

Sarah and her team support Encompass in following all rules, laws and standards related to the way the agency provides behavioral health services to clients; keep track of quality data to find ways to improve the services provided to clients; and support programs in testing ways to improve services.

Sarah oversees behavioral health services regulatory compliance and quality improvement activities across Encompass. She is the agency's Privacy Officer and Compliance Officer.