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Marissa A Duncan, Therapist
Therapist in PORT WASHINGTON, Wisconsin

Marissa A Duncan, Therapist

Specialties:
Grief & loss Sexual trauma Trauma & PTSD +27
Provider Gender: Female (She/Her)
Ages Served: 15-75+
Appointments: In-office and Telehealth
Manages Medications: No, provides therapy only
Accepts Insurance: Yes - View accepted plans

Marissa Duncan, a Licensed Professional Counselor at LifeStance Health in Wisconsin, is dedicated to helping individuals of all ages navigate their mental health journeys. Serving clients from adolescents to seniors, she provides individual therapy designed to promote healing, personal growth, and emotional resilience. Marissa specializes in treating anxiety, depression, PTSD/trauma, and later-life transitions, offering a compassionate, nonjudgmental space where clients can explore their thoughts, feelings, and behaviors. Marissa is passionate about supporting individuals facing challenges related to women’s issues, such as self-esteem struggles, relationship difficulties, and panic disorders. She also focuses on helping clients manage complex medical conditions and chronic pain, recognizing the intricate relationship between mental and physical health. Through her expertise in Cognitive Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT), and mindfulness practices, Marissa helps clients build coping skills that promote long-term well-being. In addition to her core specialties, Marissa offers tailored support to LGBTQ+ individuals, helping them navigate gender identity concerns and the unique pressures they may face. Her practice is inclusive and welcoming to all, ensuring that every client feels respected and understood. Outside of her work, Marissa enjoys hiking, traveling, and exploring the wonders of marine wildlife. She also finds joy in cooking, solving puzzles, and coloring, hobbies that reflect her appreciation for mindfulness and creativity.

Provider Introduction

Types of Care & Ages Served

Areas of Focus

Individual Therapy

Get help addressing challenges and improve well-being with a clinician's guidance.

  • Grief & loss
  • Sexual trauma
  • Trauma & PTSD
  • Aging
  • Anger issues
  • Anxiety
  • Bullying or harassment
  • Career & relationships (mid-life)
  • Chronic pain-related issues
  • Conditions caused by stress
  • Depression/feeling down
  • Early adulthood: Independent living or relationships
  • Early adulthood: Starting college or career
  • Empty nesters
  • Family conflict
  • Gender identity
  • General relationship issues
  • LGBTQ+
  • Marital stress or divorce
  • Panic attacks
  • Parenthood
  • Parenting
  • Premarital counseling
  • Retirement
  • Self-esteem
  • Sex & intimacy issues
  • Sleep issues or insomnia
  • Social skills & communication
  • Stress from ongoing health issues
  • Stress management

Languages

  • English
  • German

Education

  • Mount Mary University

  • University of Wisconsin- Stevens Point

Locations

LifeStance Health
Telehealth Only

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Frequently Asked
Questions

Please use our online form to schedule an appointment with Marissa A Duncan. You can also call 262-427-8905 to have someone assist you.

See what our patients are saying about Marissa Duncan

Therapists and psychiatrists are attentive and kind. They care about you and are responsive to your needs. They are caring and they are helpful. I highly recommend.
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Michele Kalis (Muneera K.

Michele Kalis (Muneera K.

Sep 26, 2025
Google Google
Very pleased with Dr Ines attention to root cause and long term planning.
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Stephen S.

Stephen S.

Oct 07, 2025
Google Google
Great! Very knowledgeable and patient and answered all my questions
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Anonymous

Anonymous

Aug 04, 2025
WebMD WebMD
Excellent experience
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Andi C.

Andi C.

Jan 27, 2026
Google Google
Excellent experience
Read Full Review
Kevin M.

Kevin M.

Jan 21, 2026
Google Google
Excellent experience
Read Full Review
Kasi S.

Kasi S.

Apr 13, 2025
Google Google
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Patient Review Disclaimer

The testimonials and reviews shared on our platforms reflect the personal experiences and opinions of individuals voluntarily shared on third-party sites (e.g., Google). These reviews are voluntarily provided and are not compensated, solicited, or endorsed by LifeStance Health.

Important Notes:

  • Reviews do not represent the views of LifeStance Health, Inc., its clinicians, or affiliates
  • Individual results may vary – testimonials are not guarantees of similar outcomes
  • We do not independently verify the clinical accuracy or authenticity of statements
  • Clinician qualifications, expertise, and fit for your specific needs should be assessed through direct consultation
Marissa A Duncan, Therapist

Marissa A Duncan

Therapist in PORT WASHINGTON, Wisconsin

Already have an appointment?

Video visit waiting room Join Now
Existing patient portal Sign in