About Us

Greg Oswald, PsyD, MA, CADC, LCPC

President and Director of Training

 greg@plainfieldcounselingcenter.com / Voicemail x2
Dr. Greg Oswald is a Licensed Clinical Psychologist and Certified Alcohol and Drug Counselor providing individual, couple and family therapy.  He specializes in working with children, adolescents, and adults who are experiencing depression or anxiety. Greg practices evidence-based therapies such as: Acceptance and Commitment Therapy (ACT), Cognitive Behavioral Therapy (CBT), Dialectical Behavioral Therapy (DBT), and mindfulness to treat mood and substance abuse disorders.


Greg is a graduate of Indiana University and earned an M.A. in Counseling Psychology from Lewis University and an additional M.A. in Clinical Psychology from Midwestern University as well as a doctorate in Clinical Psychology from Midwestern University. Greg was on staff at Linden Oaks at Edward Hospital for 8 years and completed his doctoral internship within Linden Oaks' Anxiety Services. Greg is an active member of the American and Illinois Psychological Associations, and Association for Contextual Behavioral Science. He is also an Adjunct Professor at Midwestern University where he teaches doctoral psychology students and is a founding board member of Rise From The Ashes, a domestic violence nonprofit. 

Insurance Accepted: BCBS PPO

Sherry Patti, MS, LCSW

 sherry@plainfieldcounselingcenter.com / Voicemail x3
Sherry Patti is a licensed clinical social worker who provides individual, group, couple and family therapy.  Sherry has a bachelor’s degree from Clarke College with a major in social work and received her Master's from Loyola University in clinical social work.  She has been working in the field for over ten years. 


She has experience working with issues of depression, anxiety, PTSD, abuse, relational issues, and self injury, as well as, behavioral issues.  She has worked in residential treatment centers, community mental health centers and inpatient hospitals. Sherry loves engaging with her clients and fostering a sense of connectedness.  She believes that everyone can benefit from the support and insight that therapy provides.  

Insurance Accepted: BCBS PPO

Rick Osman, PhD, MS, LCPC

 rick@plainfieldcounselingcenter.com / Voicemail x4
Dr. Osman is a Licensed Clinical Professional Counselor who provides individual, couples and family therapy. 

Dr. Osman specializes in working with adolescents and families who are experiencing anxiety, depression, post-traumatic stress (PTSD), grief/loss and substance abuse issues. Dr. Osman practices evidence-based therapies such as: Reality Therapy, Dialectical Behavioral Therapy, Cognitive Behavioral Therapy (CBT), Rational Emotive Behavioral Therapy (REBT) and Person Centered Therapy. In addition, Dr. Osman can also provide Christian Counseling in combination with the above therapies if requested.


Dr. Osman is a graduate of National-Louis University where he received his Bachelors of Arts degree (B.A.) in Human Services and Community Counseling. Dr. Osman also received his Masters of Science degree (M.S.) from National-Louis University in Counseling and Human Services Structure. Dr. Osman received his Doctorate in Christian Counseling and Psychology (PhD) from Northwestern Christian University. As a retired firefighter Dr. Osman is familiar with working with all types of crises that produce fear, grief, loss and severe anxiety. Through these life experiences, Dr. Osman has developed ways to constructively work through these issues in a prompt and effective manner by utilizing the above evidence-based practices. Dr. Osman is the author of, "Hope, Our Greatest Privilege-10 Reasons" and "Thoughts From the Waiting Room". Dr. Osman is available to do motivational speaking engagements and enjoys public speaking for educational and motivational purposes. 

Insurance Accepted: BCBS PPO, Compsych, BHS, Cigna, Aetna, and Tricare

Lauren Harris, PsyD

 lauren@plainfieldcounselingcenter.com/ Voicemail x5
Dr. Lauren Harris is a Licensed Clinical Psychologist focused on providing individual, group, and family therapy. Her areas of specialty include work with children, adolescents and young adults who struggle with Autism Spectrum Disorders, Anxiety, Obsessive Compulsive Disorder, Depression and Mood Issues, Self-Injury and Behavioral Issues.  Lauren practices evidenced-based treatment including Acceptance and Commitment Therapy (ACT), Dialectical Behavior Therapy (DBT), and Social Skills Training. 


Lauren received her Bachelor of Arts in Psychology from Valparaiso University, and earned both her Master of Arts and Doctorate in Clinical Psychology from the Illinois School of Professional Psychology in Schaumburg. She has completed training and program development in private practice, therapeutic day school, and outpatient clinic and hospital settings. She completed her pre-doctoral internship treating adolescent and adult populations on the Outpatient Mental Health, Self-Injury and Anxiety IOPs at Linden Oaks Hospital in Naperville. Lauren co-created and co-facilitated Aspirations IOP, focusing on treatment of adolescents with high-functioning Autism Spectrum Disorders and co-morbid anxiety or mood disorders, at Linden Oaks Hospital during her pre-doctoral internship and post-doctoral fellowship years. 

Insurance Accepted: BCBS PPO

Nick Heimer, MS, LCPC

nick@plainfieldcounselingcenter.com / Voicemail x6

Nick Heimer is a Licensed Clinical Professional Counselor providing individual and family therapy to children, adolescence and adults.  Nick utilizes evidenced based treatments including, Cognitive Behavioral Therapy (CBT), person centered and motivational interviewing.  Nick has experience working with children and adolescence in a residential setting as well as a community mental health settings with individuals and families experiencing a mental health crisis.  He specializes in: depression, anxiety, behavior problems, anger management, self-injury, self-esteem, trauma and relationship concerns.


Nick received a Bachelor of Science in Criminal Justice from Loyola University of Chicago and a Master's of Arts from Lewis University in Counseling Psychology.  Nick interned at Cornerstone Services with adults and worked at the Will County Health Department in the Screening, Assessment and Support Services (SASS) program. 

Insurance Accepted: BCBS PPO

Amber McMahon, PsyD, MA, LCPC

amber@plainfieldcounselingcenter.com / Voicemail x7

Dr. Amber McMahon is a Licensed Clinical Professional Counselor who provides individual, couples, and family therapy using evidence-based treatments, including Acceptance and Commitment Therapy (ACT) and Dialectical Behavioral Therapy (DBT). Amber specializes in working with children, adolescents, and adults experiencing anxiety, depression, effects of abuse or trauma, relationship issues, and behavioral concerns.


Amber has a Bachelor’s degree in psychology from Illinois State University and earned both a Master of Arts (MA) in Clinical Psychology and a doctorate in Clinical Psychology (PsyD) from Illinois School of Professional Psychology and she completed her doctoral internship and post-doctoral residency at Linden Oaks at Edward Hospital's Anxiety Services. She is an active member of the Association for Contextual Behavioral Sciences

Insurance Accepted: BCBS PPO, Cigna, Compsych, and Magellan

Dustin Summers, PsyD, MA, LCPC

dustin@plainfieldcounselingcenter.com / Voicemail x8

Dr. Dustin Summers is a Licensed Clinical Psychologist providing individual, couples and family therapy. He has experience working with many different variations of psychological distress, including: depression, anxiety, bipolar disorder, developmental disorders, psychosis, and personality disorders. Dustin practices evidence-based therapies such as: Acceptance and Commitment Therapy (ACT), Cognitive Behavioral Therapy (CBT), Dialectical Behavioral Therapy (DBT), and mindfulness.


Dustin is a graduate of Illinois Wesleyan University and earned an M.A. in Counseling Psychology, as well as a Doctorate in Clinical Psychology from Midwestern University. He has received well-rounded clinical training from working with many different client populations. Specifically, Dustin has worked in psychiatric hospitals, residential settings, community mental health, and private practice. He completed his doctoral internship at Friends Hospital in Philadelphia, the oldest private psychiatric hospital in the country. In therapy, Dustin focuses on helping clients work towards the life they desire while learning to manage and cope with life stressors. 

Insurance Accepted: BCBS PPO

Clare Jonela, MSSA, LCSW

clare@plainfieldcounselingcenter.com / Voicemail x9
Clare Jonela is a Master's level Licensed Clinical Social Worker providing individual and family therapy to children, adolescents, young adults and adults.  After graduating from the University of Dayton, with a major in Psychology and a minor in Social Work,  Clare went on to obtain her Master's in Social Work from Case Western Reserve University specializing in children, youth and families. Clare has experience working with individuals and families in a variety of settings including: Schools, Hospitals, The Dupage County and at Linden Oaks.


Clare has a non-judgmental and welcoming approach with her clients and incorporates the evidence based therapeutic techniques of Dialectical Behavioral Therapy (DBT) and Acceptance and Commitment Therapy (ACT) when working with individuals suffering from: anxiety, depression, self injury, trauma and PTSD, self esteem, grief/loss, academic underachievement and family conflict.

Insurance Accepted: BCBS PPO and Cigna

Matt Lauer, PsyD, MA

 matt@plainfieldcounselingcenter.com / Voicemail x10
Dr. Matt Lauer is a Licensed Clinical Psychologist providing individual, group, and family therapy. He specializes in work with adults experiencing depression and anxiety. Matt practices evidenced-based treatment including Acceptance and Commitment Therapy and Dialectical Behavior Therapy, as well as Marital and Family Therapy.


Matt has a BA from the University of Delaware and earned both his MA and PsyD (doctorate in Clinical Psychology) from the Illinois School of Professional Psychology in Chicago. He has completed training and program development in private practice, community mental health, and hospital settings. He completed his pre-doctoral internship and post-doctoral fellowship treating adult populations on the Inpatient and Anxiety units at Linden Oaks Hospital in Naperville.

Insurance Accepted: BCBS PPO, BCBS HMO, and Cigna  

Leah Swenson, MA, LCPC, ATR

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Leah Swenson is a Master’s level Licensed Clinical Professional Counselor and Registered Art Therapist.  She provides individual, couples, and family therapy focusing on using an eclectic therapeutic method that is creative, yet fundamental. Leah specializes in Dialectical Behavior Therapy (DBT), Acceptance and Commitment Therapy (ACT), and a Person Centered approach.  Leah has experience working with children, adolescents, and adults ranging from anxiety, depression, grief/loss, adjustment, self-injury, and relational issues. Incorporating Leah’s Art Therapy practice, she believes that including art into a therapeutic session enables improved communication, insight, and healthy coping techniques.  Creative outlets can be facilitated entirely, minimally, or not at all in a session depending on the client’s interest.


Leah received her B.F.A. in Art Therapy from Millikin University with a minor is Psychology; followed by gaining her M.A in Art Therapy Counseling at Southern Illinois University Edwardsville. Leah has worked in medical hospitals, intensive mental health outpatient settings, and community counseling centers. Leah hopes to help increase emotional strength and foster awareness to empower change for those in need.

Insurance Accepted: BCBS PPO

Corey Worden, MA, LCPC

corey@plainfieldcounselingcenter.com / Voicemail x12

Corey Worden is a Licensed Clinical Professional Counselor with experience counseling individuals, couples, families, and groups. His practice focuses on adults of all ages and adolescents typically ages 14 and older. He holds a Master of Arts in Pastoral Counseling from Loyola University-Chicago and a Bachelor of Arts in Sociology from Eastern Illinois University. 


Corey’s clinical training and experience includes working in inpatient and outpatient hospital-based behavioral health programs and community-based mental health and substance abuse treatment. His diverse clinical background includes providing psychiatric crisis intervention and assessment services at Linden Oaks Behavioral Health and counseling and program management/development in a medication-assisted treatment (MAT) program for individuals struggling with substance abuse and heroin addiction at Family Guidance Centers, Inc.


Growth, Healing, and Wholeness are the foundational goals in supporting a client’s personal psychological journey. In this regard, every client is unique, which often requires a uniquely tailored approach to each client’s specific needs. Corey’s theoretical approach is psychodynamic and existential. His focus embraces the importance of attachment theory, systems theory, interpersonal neurobiology, and relational and spiritual dynamics. He has experience working with individuals and families dealing with substance abuse issues, depression, anxiety, anger and stress management, family and relational conflict, trauma, and self-esteem issues. Corey can best be described as an agnostic pastoral counselor, in that he acknowledges and explores spiritual and religious belief as a critically important part of an individual’s experience.


Pastoral counseling involves an appreciative inquiry into the whole person allowing space to focus on the relationships between the individual, others, and their Higher Power. His clients come from a diverse spiritual perspective and background including AA/NA, Atheist, Agnostic, Buddhist, Evangelical Christian, Hindu, Jewish, Muslim, New Age, Protestant Christian, Roman Catholic, and Zen. Corey’s pastoral counseling training guides his practice by actively integrating religious/spiritual principles and psychological concepts in the interest of promoting mental health. 


Corey is a founding committee member of the Plainfield Parent Community Network, a volunteer network of parents, educators, and professionals, committed to creating resources and opportunities for mental health support and education in the community. He is also regular contributor to PATH , a group dedicated to providing support to family members of individuals struggling with substance abuse. Corey is available for speaking engagements and is known as an informative and dynamic speaker, skilled at crafting interactive presentations about mental health related topics.


Insurance Accepted: BCBS PPO

Jamie Mirocha, MC, LCSW, CADC

jamie@plainfieldcounselingcenter.com / Voicemail x13
Jamie Mirocha is a Master's level Licensed Clinical Social Worker and Certified Alcohol and Drug Counselor providing individual and family therapy to children, adolescents, and adults. After graduating from Northern Illinois University with a major in Social Work and Family Social Services, Jamie went on to obtain her Master's in Social work from Aurora University. Jamie has experience working with individuals and families in a variety of settings including: Linden Oaks Hospital for the last 6 years in both inpatient and outpatient settings, Schools, and Social Service Agencies in the community.


Jamie engages clients with a warm, empathic, non-judgmental yet direct style and uses a down-to-earth approach to make clients feel at ease during therapy sessions. She believes that building a strong and collaborative therapist-client relationship is essential to the therapeutic process.  Jamie utilizes a variety of counseling approaches to assist clients with developing coping skills and making positive changes in their lives, which include Cognitive Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT), a Client-Centered Approach and Motivational Interviewing techniques. Jamie specializes in working with individuals who find themselves struggling with: depression, anxiety, addiction, defiant behaviors in teens, self-injury, self-esteem, life transitions, family conflict, and infertility. Jamie works with clients of all ages but she has a great deal of experience working with adolescents and families. 

Insurance Accepted: BCBS PPO and Cigna

Danielle Zimmerman, MA, LCPC

danielle@plainfieldcounselingcenter.com / Voicemail x14
Danielle Zimmerman is a Masters Level Licensed Clinical Professional Counselor and earned her Masters Degree in clinical Mental Health Counseling from Roosevelt University. Her approach is to help individuals, families, or couples develop long lasting health. Areas of specialty include  adolescents, young adults, adults, LGBTQ, self-harm, anxiety, depression, anger management, self worth, trauma, PTSD, grief/loss, social anxiety, trichotillomania, Obsessive-Compulsive-Disorder, and building healthier relationships. Danielle uses Cognitive Behavioral Therapy (CBT), Dialectical Behavioral Therapy (DBT), Acceptance and Commitment Therapy (ACT), and solution focused therapy to help clients identify individualized goals for a more fulfilled life.


She has worked extensively with patients and families in crisis at Linen Oaks Hospital for the past 7 years, and is trained to help teach skills to manage emotions and overcome struggles as well as supporting families or individuals during difficult times. Danielle has a directive/goal-setting and strength based approach to therapy that is collaborative and  supportive. She is committed to working with clients to examine the issues in their lives, develop a deeper understanding and identifying new solutions to current problems. 

Insurance Accepted: BCBS PPO 

Heather Samardzija, MA, LCPC

heather@plainfieldcounselingcenter.com / Voicemail x15
Heather is a Licensed Clinical Professional Counselor providing services to individuals and family therapy to adolescents and adults. She has experience utilizing Acceptance and Commitment Therapy (ACT). Heather strives to create a trusting, authentic therapeutic relationship in which her clients’ feel honored and empowered. Her clinical interests include working with substance abuse, trauma, relationship issues, and veterans. Heather has experience working in various treatment settings including hospital, rehabilitation, and residential. 


Heather received a Bachelor of Arts in Psychology from University of Saint Francis and a Masters of Arts in Clinical Professional Psychology from Roosevelt University. She has worked Linden Oaks at Edward Hospital, Rosecrance substance abuse treatment center, and Timberline Knolls residential treatment center. 

Insurance Accepted: BCBS PPO

Doctoral Students

Kevin Meehan and Katarina Vamvouris are completing their doctoral diagnostic practicum training experience at Plainfield Counseling Center. Kevin and Katarina are students at Midwestern University's Clinical Psychology Program