Anastasia Theisen, MS, LMFT | Alsana
Anastasia Theisen, MS, LMFTAssistant Lead Therapist

    Anastasia Thiesen, MS, LMFT, is an assistant lead therapist at our St. Louis RTC program. After completing her undergraduate studies in psychology, she when on to earn her master’s degree in applied family and child studies with a specialization in marriage and family therapy from Northern Illinois University in 2016.

    As a graduate intern, Anastasia worked with children, adolescents, and adults who had experienced abuse in a domestic violence/sexual assault shelter. Prior to joining Alsana, she worked at Ben Gordon Center, a community mental health agency, where she worked with children, adolescents, adults, and families with a variety of mental health diagnoses and relational dynamics.

    Anastasia has completed EMDR Level 1 training and is Gottman Level 2 certified. She is a certified clinical trauma professional and certified family trauma professional.

    Anastasia is passionate about working with individuals who have been diagnosed with eating disorders as well as their families/partners to assist with the healing process and promote lasting change. She is especially excited about Alsana’s servant leadership philosophy and adaptive care model approach in working with individuals and their families.

    She loves helping people grow and seeing all the beautiful ways in which people make changes. She enjoys witnessing clients learn to love all aspects and versions of themselves as they make their respective journeys through life.

    Anastasia has always loved the performing arts. She used to be in theater, dance, choir, and show choir. She also has many hobbies, including photography, rock climbing, running, reading, animals, and spending time with her cat, Juno.

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