Works with
- Anger
- Stress, Anxiety
- LGBT
- Relationship issues
- Bipolar disorder
- Depression
How Mary works
Practical facts
- Credentials
- LCPC
- Licensed in
- Illinois
- Years in practice
- 35
- Languages
- English
- Session format
- Online, through our partner platform
About Mary
Dr. Mary Ann Dier-Zimmermann is a Licensed Clinical Professional Counselor in Illinois with 35 years of experience. She brings a calm, patient presence and listens with full attention.
Her approach is respectful of faith, gender orientation, and life experience. She focuses on helping people find more balance and relief from strong emotions like anger and anxiety. Dr.
Dier-Zimmermann offers straightforward assessment and a clear plan to guide work together. Sessions address concerns such as depression, grief, relationship strain, parenting stress, addictions, and compassion fatigue.
Background and approach
She also helps people facing identity questions, attachment concerns, and life transitions. Her work draws on Acceptance and Commitment Therapy, Attachment-Based Therapy, and client-centered principles. That means she helps people notice what matters most, understand relationship patterns, and use their own strengths to make changes.
She also weaves in existential ideas about meaning when that fits a person’s goals. People can expect a respectful, nonjudgmental space. The therapist listens first, then offers practical steps and tools.
Therapy can include talking through relationship issues, practicing new ways to manage anger, and building supports for daily life. Dr. Dier-Zimmermann combines education in religion, spirituality, and psychology when clients want that included.
She aims to help people reconnect with what gives life purpose while reducing distress and improving everyday functioning.
What Mary works with
Everything Mary lists, in the therapist's own terms. Anger is the reason this directory exists; the rest tells you what usually sits alongside it in Mary's practice.
- Stress, Anxiety
- LGBT
- Relationship issues
- Bipolar disorder
- Depression
- Addictions
- Family conflicts
- Trauma and abuse
- Grief
- Intimacy-related issues
- Parenting issues
- Anger management
- Self esteem
- Career difficulties
- Coping with life changes
- Compassion fatigue
- Abandonment
- Adoption and foster care
- Aging and geriatric issues
- Attachment issues
- Avoidant personality
- Blended family issues
- Body image
- Cancer
- Caregiver issues and stress
- Codependency
- Commitment issues
- Coping with natural or human-caused disaster
- Dependent personality
- Dissociation
- Divorce and separation
- Emptiness
- Family of origin issues
- Family problems
- Fatherhood issues
- Forgiveness
- Gender dysphoria
- Guilt and shame
- Hospice and end-of-life counseling
- Infidelity
- Isolation / loneliness
- Life purpose
- Midlife crisis
- Mood disorders
- Multicultural concerns
- Narcissism
- Personality disorders
- Post-traumatic stress
- Prejudice and discrimination
- Process addiction (porn, exercise, gambling)
- Seasonal Affective Disorder (SAD)
- Self-harm
- Self-love
- Sexuality
- Women's issues
- Workplace issues
- Young adult issues
Approaches Mary lists
- Acceptance and Commitment Therapy (ACT)
- Attachment-Based Therapy
- Client-Centered Therapy
- Existential Therapy
- Gottman Method
- Imago Relationship Therapy
- Jungian Therapy
- Mindfulness Therapy
- Psychodynamic Therapy
- Solution-Focused Therapy
Listing an approach is not evidence of training in it. This directory copies what each therapist names and does not check training records.
Therapeutic approaches for online care
Acceptance and Commitment Therapy (ACT) helps people notice unhelpful thoughts and focuses on what matters most in life. It can be useful for anxiety, depression, and anger by building willingness to act toward valued goals. Attachment-Based Therapy looks at relationship patterns and how early bonds shape current reactions; it can help with intimacy issues, attachment concerns, andanger that comes from unmet needs. Client-Centered Therapy emphasizes empathy, listening, and making space for the client to find their own path, which supports self-esteem and coping during hard life changes.Choosing the right approach is collaborative. The therapist will listen to your goals, try a few methods, and adjust based on what fits. Together you decide which ideas and exercises feel most helpful for your situation, and the plan can change as you progress.
Online formats include video calls, phone sessions, live chat, and text-based messaging. Video lets you read facial expressions and have a full conversation. Phone sessions work well when bandwidth is limited or when you prefer not to be on camera. Live chat or text-based messaging can be useful for shorter check-ins, faster support between sessions, or when typing helps you express things more clearly. These options make scheduling easier and let therapy fit into busy days.
Questions people ask about Mary
What concerns does this therapist commonly address?
She works with stress, anxiety, depression, grief, addictions, relationship issues, parenting strain, anger, and many life changes. Other areas include attachment issues, body image, and caregiving stress.
What is the therapist's general style in sessions?
The style is calm, listening-first, and nonjudgmental. Practical plans and tools are offered after assessment to help with emotions and daily challenges.
How much clinical experience does she have?
She brings 35 years of clinical experience working with a wide range of concerns and life stages.
What are her credentials and where is she based?
She is an LCPC, Licensed Clinical Professional Counselor, practicing in Illinois.
Which languages are supported for sessions?
Sessions are offered in English.
Can international clients work with this therapist?
International clients are not currently accepted.
What session formats are available?
Sessions can be held by video calls, phone sessions, live chat, or text-based messaging to fit different schedules and preferences.
How does payment and getting started work?
Costs vary with location and use a subscription that can be canceled at any time. To begin, select Start Therapy, complete a short matching questionnaire, and schedule according to therapist availability.