Mariangelly Sierra

Contributing Faculty
College of Social and Behavioral Health
School of Counseling
M.S. Clinical Mental Health Counseling

Mariangelly Sierra joined Walden University’s School of Counseling as Contributing Faculty in May 2021. Her other roles at Walden include mentoring students at the Academic Skills Center, doctoral candidate in the Counselor Education and Supervision program, and an alumnus from the Clinical Mental Health Counseling master’s program. Mariangelly possesses over four years of experience teaching and mentoring undergraduate and graduate students. She is a National Certified Counselor and a Licensed Clinical Mental Health Counselor Associate in private practice. Her current clinical focus is on supporting the Latinx and LGBTQIA+ communities. In the past, she has worked with non-US citizens on the Texas-Mexico border and refugee families survivors of trauma from countries in Africa, the Middle East, and Southeast Asia.

Mariangelly is a member of the American Counseling Association (ACA), the Association for Multicultural Counseling and Development (AMCD), Counselors for Social Justice (CSJ), the Society for Sexual, Affectional, Intersex, & Gender Expansive Identities (SAIGE), and the Association of Counseling Sexology and Sexual Wellness (ACSSW). She has presented at various conferences on topics related to multicultural counseling awareness and development. Mariangelly also serves as a mentor for Counselors for Social Justice (CSJ). Her research interests include multicultural competence in counseling and counselor education and supervision, social justice, and advocacy related to Latinx, LGBTQIA+, and other minoritized populations.

When she is not teaching, mentoring, or supporting clients, she enjoys drawing, painting, meditating, and being out in nature barefoot in the company of her child.

Courses Taught

COUN 6723 - Multicultural Counseling

COUN 6100 - Introduction to Mental Health Counseling


MS, Walden University

MA, Seminario Evangelico de Puerto Rico

BA, University of Puerto Rico Rio Piedras Campus


Sierra, M. (2022). Becoming a Culturally Responsive Counseling Professional. Walden University School of Lifelong Learning

Sierra, M., Gess, J. M. (2021). Chapter 20.4: Cultural Considerations in Treatment, Case of Ismat. . Casebook for DSM5: Diagnosis and treatment planning (2nd Ed.)

Gess, J. M., Sierra, M. (2021). Chapter 20.3: Cultural Considerations in Treatment, Case of Amy. . Casebook for DSM5: Diagnosis and treatment planning (2nd Ed.)

Sierra, M. (2019). Increasing your Cultural Sensitivity. The Savvy Student


Banerjee, S. K., Szirony, G., Sierra, M. (2022). Theoretical and Empirical Connections Between Physical and Mental Health Among US adults in a Pandemic Era. Walden University

Sierra, M. (2021). Estrategias para Desarrollar Nuestra Receptividad Cultural como Consejeres Profesionales. Asociacion Puertorriqueña de Consejeria Profesional

Sierra, M., Gess, J. M. (2021). Strategies for Becoming Culturally Responsive Counseling Professionals. Association for Multicultural Counseling and Development

Sierra, M. (2020). Strategies for Becoming Culturally Sensitive Counselors. Walden University

Sierra, M., Gess, J. M. (2019). The Role of Multicultural Competence in Generating Collaborative Social Change Efforts. Walden University

Sierra, M. (2019). Multicultural Panel. Walden University