

Find affordable mental healthcare in Saint Peters with Aetna coverage through Headway. Our network of 1,183 licensed providers offers virtual and in-person sessions, with copays starting around $30. Many patients save 75% on therapy costs while accessing care within days.
If you're dealing with anxiety that won't let up, a life change that's left you off-balance, or relationship tension that keeps getting in the way — I can help. After 10 years as a school social worker in St. Louis, I know what it looks like when people are overwhelmed, and what it actually takes to move through it. Today I work with adults navigating similar territory: the pressure that builds quietly, the transitions that feel harder than expected, the moments in relationships that leave you stuck. My focus is on making therapy practical, grounded, and worth your time.
My name is Elizabeth Penniston, and I am a Licensed Clinical Social Worker (LCSW) with a degree from Saint Louis University. Throughout my academic journey, I dedicated myself to gaining both theoretical knowledge and practical experience, which led me to complete my practicum and supervision at a respected Domestic Violence organization. This experience has allowed me to work closely with individuals who have faced challenging and complex situations, further enhancing my skills in trauma-informed care, advocacy, and therapeutic support.
I am deeply committed to providing compassionate and effective mental health care, utilizing evidence-based practices, and fostering a safe environment for my clients. My work has instilled in me a profound understanding of the unique needs of those affected by domestic violence and the importance of empowering individuals as they navigate their healing journey.
EPIR Source is built on the foundation of trust and accountability between clinician and client. We pride ourselves on providing the EPIR Experience which includes clients having a life transforming, therapeutic experience.
You came here because something isn't working. Maybe it's the moods that swing without warning, the emotional intensity that keeps spilling into your relationships, anxiety that won't quit, or the weight of something you've been carrying for longer than you should have to. Maybe you've been leaning on substances to get through and know something needs to change.
I work with adolescents, adults, and seniors across Missouri through telehealth, and I specialize
in the kinds of struggles that don't fit neatly into one category: mood disorders, trauma, anxiety
borderline personality, substance use, and relationships under strain.
You've probably spent a lot of time pushing through — carrying the anxiety, the grief, the stress, or the weight of things you haven't quite said out loud yet. Maybe you've wondered if what you're feeling is "bad enough" to bring to therapy, or whether anyone would really understand your specific situation. It is. And they will. I'm Jenna Miller, a Licensed Clinical Social Worker supporting individuals across diverse backgrounds — offering a space where you can finally feel heard, not just managed.
My clients seek to understand and accept themselves and their life experiences. Together we will explore how your past is impacting your present, so you can ultimately move toward a better future.
I work with individuals, couples and families from an attachment and systems perspective, knowing we experience many wounds through relationships but through the right relationships we can also experience healing.
It is important in my work that I allow the client's cultural context inform my treatment.
I care about real connection, steady progress, and creating a space where you can show up as yourself. I’ve spent years helping people sort through heavy thoughts, navigate big life changes, and rebuild a sense of direction. I won't rush you or force you into a mold, I help you understand what matters to you and take the steps to move towards it. I'm happy to be the calm, steady guide who will walk alongside you.



Headway makes it easy to get affordable in-network mental health care with Aetna — from finding the right therapist or psychiatrist, to understanding costs, to booking your first session.
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