Dr. Joshua Calhoun

Medical Director

Joshua Calhoun is a board-certified Adolescent and Adult Psychiatrist with over 20 years of experience. Dr. Calhoun is the Medical Director for Hawthorn Children's Psychiatric Hospital. He is an experienced adjunct assistant professor with a demonstrated history of working in the hospital & healthcare industry. He is skilled in clinical research, Behavioral Health, and Healthcare management.

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Sabrina Davis, APRN-PMHNP, MSN, RADC-P

Founder & Executive Director

Sabrina Davis, APRN-PMHNP, MSN, is the Co-Founder and Executive Director of WalkNFaith Substance Abuse & Mental Health Treatment Center. Sabrina is a Psych Mental Health Nurse Practitioner with over 20 years of experience in Community Health, Mental Health, and Substance Use Treatment. She holds her Master's Degree in Executive Leadership & Management. Her commitment to advocacy for individuals diagnosed with Opiate Use Disorder has led her to open WalkNFaith in one of the highest crime and impoverished communities in Saint Louis City. To ensure individuals in rural and low-income communities have access to quality substance abuse & mental health treatment, she has acquired the only substance abuse mobile clinic van in Saint Louis. She has become the voice of those suffering from health and racial disparities.

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Richard Hayes

President of WalkNFaith

Richard Hayes has over ten years of experience in ministry and is the President of WalkNFaith. He facilitates spiritual counseling at WalkNFaith Treatment Center. Richard brings over 15 years of experience as a community activist. He remains committed to decreasing racial disparities and improving the quality of life for underprivileged people by leading our " Homeless Outreach" and "Youth Mentoring" programs.

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Mandy Parker MS, BCBA, LBA

Mandy Parker has her undergraduate degree from Utah State University and a Master in Science at Southern Illinois University in Behavior Analysis and Therapy. She has years of experience working in various areas of human services: disabilities, youth corrections, substance abuse for adolescents, brain injury rehabilitation, helping families indicated on abuse and neglect in their homes to establish routines, acquire child management, problem-solving, assertiveness, budgeting, and stress management skills. She facilitates community training and serves on a Children's behavioral health coalition. Mandy specializes in Acceptance and Commitment Training and is passionate about teaching others how to identify their values and live more in line with what matters most to them amid whatever challenges they face.

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Emmanuel Opada MD,MPH,CPH,CIC

Emmanuel is a board-certified Infection Control Epidemiologist. He has ten years of experience working in healthcare facilities and public health in West Africa and the United States. He has a medical background and a Master's degree in Public health. He is an Epidemiologist and have lead several projects including the Global Fund Project, on HIV prevention, care, and treatment in West Africa. He has several published articles regarding therapy for HIV and maternal health.

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Julana Parker

I received my Bachelor of Arts in Psychology from St. Louis University in 1998 and my Masters of Arts in School Counseling from Lindenwood University in 2008. In October, I will be returning to graduate school at Capella University to finish earning my Certificate in Psychology in Play-Therapy. Ultimately, I aspire to run my own business as a Successful Play-Therapist in the Dallas Metroplex area. I have been working as a Professional School Counselor for over fourteen years. Currently, I work in an Elementary School and I love every minute of it! My main responsibilities are ensuring that I am meeting the social, emotional, academic, and career-focused needs of/and with the student. This entails many responsibilities, as every stakeholder plays a key component in the success of the student, for example, I conduct Parent University Training Courses, attend ongoing professional training as a member of the American School Counseling Association, and conduct daily guidance and weekly Socially Centered, Goal Oriented Groups with students to name a few.
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Sandra Rendon- Steele

Sandra is a Licensed Clinical Social Worker (LCSW) with a Master's (MSW) and bachelor's (BSW) in Social Work with a minor in psychology from the University of Missouri-St. Louis. Sandra was born in El Salvador and came as a refugee to St. Louis in 1983. Sandra is fluent in Spanish and have provided interpreter services in various roles as a social worker. During these last 23 years as a social worker, I have grown professionally and am passionate about what I do.

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WNF Medical Team

The WalkNFaith Medical Team consists of seasoned and qualified Nurse Practitioners, Nurses, and Behavioral Health Technicians. WalkNFaith staff is all trained as Alcohol & Drug Counselors. Our street outreach team consists of certified peer specialists who look like the population we serve.

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WNF Program Managers

Our Program Managers consist of qualified professionals that look similar to the population we serve. WalkNFaith prides itself in its diverse and seasoned staff. Our program managers have an extensive background in behavioral health, addiction studies, and crisis prevention intervention.

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