Maria Sierra
Psychologist
3200 E. Guasti Rd. 100
Ontario, CA 91761
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1697 providers
Availability last updated 12/12/2025
Maria Sierra
Psychologist
3200 E. Guasti Rd. 100
Ontario, CA 91761
Dr. Jessica Marks, PsyD
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Hope Kravetz
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Dr. Sonia Barbosa
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Dr. Timothy Post, PsyD
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Ashley Schara
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Ellen Pereira, PMHNP
Psychologist
Virtual Visit Only
Psychiatry, Therapy, Nutrition
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Ellen Pereira, PMHNP
Psychologist
9841 Washingtonian Blvd Ste 200-1065
Gaithersburg, MD 20878
Kaylin Fleisher, LSW
Psychologist
409 Illinois Avenue
Suite 1d
Saint Charles, IL 60174
Clinical Therapist—Oakbrook Terrace & Wheaton office's
Biljana Kasum, LCPC, is a skilled therapist at Suburban Behavioral Health Services, which has locations in Wheaton and Oakbrook Terrace, Illinois. Her passion is connecting with people in helping relationships, recognizing that we all struggle with various things at some point in our lives. Her primary focus is the well-being of the people she works with as she continues to expand her multicultural approach to counseling.
Biljana’s background includes working with teens, adults, and mature adults struggling with mental health issues of substance abuse and co-morbid disorders, trauma, morbid obesity, and other mood and personality disorders. She spent several years in an inpatient unit helping women of various races, cultures, and backgrounds, including the homeless population. She provided individual and group counseling, including moral reconation therapy, movement therapy, and music therapy. She also spent several years working with people with eating disorders, body dysmorphia, and obsessive-compulsive disorders, and teens and adults with ADHD.
Biljana acquired her master’s degree in counseling from Walden University, Minneapolis, Minnesota, and received supervision from established LCPCs and clinical psychologists in Illinois. She completed her training residencies in Orlando, Florida, and Atlanta, Georgia.
Biljana bases her approach to therapy on empathy, trust, and a strong therapeutic relationship. She is integrating different theoretical approaches based on the individual needs of her patients, with a special interest in acceptance and commitment therapy and cognitive processing therapy for the treatment of trauma. She is LGBTQ+-affirming.
She is fluent in Serbian, Bosnian, and Croatian.
Leave a review: https://g.page/r/CeVvMTE9piT5EBM/review
Biljana Kasum, LCPC
Social Worker
1S443 Summit Avenue
Suite 201
Oakbrook Terrace, IL 60181
Clinical Therapist- Oakbrook Terrace
Jane Ballis, LCPC, CADC, is a licensed clinical professional counselor at Suburban Behavioral Health Services, which has locations in Wheaton and Oakbrook Terrace, Illinois. She appreciates working with people of varied ages and abilities as a therapist. Jane seeks to understand differences in various cultures, races, and religions and strives to be as knowledgeable as possible in treating people with diverse backgrounds.
Jane’s background includes many years of helping children, adolescents, and adults express themselves through various artistic mediums such as painting, drawing, photography, and multimedia. She completed her masters in clinical psychology at the Illinois School of Professional Psychology. Jane learned behavioral therapy and cognitive behavioral therapy and trained and worked under a clinical psychologist’s supervision for many years, learning psychodynamic theory, play, and family therapy while specializing in children, adolescents, adults, and families at an APA-approved training site. Jane has practiced in child welfare and substance abuse settings. Jane has worked with at-risk men who were involved in prostitution as well as many issues such as LGBTQ, homelessness, medical, and employment challenges.
Jane has completed her EMDR Level 1 training and obtained specialized training with Ana Gomez, an author and specialist in EMDR and dissociative disorders with children. EMDR is used to treat many issues, from mild to very complex, such as PTSD, trauma, anxiety, phobias, panic disorder, obsessive-compulsive and generalized anxiety disorder, and excessive grief. Children and adolescents have alleviated their symptoms using EMDR, including depression caused by disturbing life experiences. Studies have shown that many crime victims, police officers, firefighters, and field workers were no longer disturbed by the aftereffects of violent assaults and/or the stressful nature of their work. Victims of sexual assault, natural and manmade disasters, accidents, surgeries and burn victims, family, marital and sexual dysfunction, and involvement were also assisted. Clients at all stages of chemical dependency, sexual deviation/addiction, and pathological gamblers have also been treated successfully, along with people with dissociative disorders.
Many people with performance anxiety or deficits in school, business, performing arts, and sports have benefited from EMDR as a tool to help enhance performance. People with somatic problems/somatoform disorders, including migraines, chronic pain, phantom limb pain, chronic eczema, gastrointestinal problems, CFS, psychogenic seizures, eating disorders, and negative body image, have attained relief from suffering with the help of EMDR.
Adults and adolescents have been successfully treated for diagnosed depression. Clients with acute trauma and a wide variety of PTSD and trauma-based personality issues experience substantial benefits from EMDR. There are many applications for EMDR, which has been used by many major treatment facilities, such as the armed forces.
Jane also has completed levels one and two of the Gottman Institute in couples therapy. This is a research-based couples therapy that has three phases. For nearly four decades, Dr. Gottman has conducted research on all facets of relationships, including parenting issues. At the Institute, in collaboration with Dr. Julie Schwartz Gottman, he developed an approach that not only supports and repairs troubled marriages and committed relationships but strengthens happy ones. One goal of the research is to make the services accessible to the broadest reach of people across race, religion, class, culture, sexual orientation, and ethnicity. For more information, please visit the Gottman Institute. http://www.gottman.com/the-gottman-institute/
Please leave a review: https://g.page/r/CQz4ngI4zS81EBM/review
Ms. Jane Ballis, MA, LCPC
Social Worker
1751 S Naperville Road
Ste 207
Wheaton, IL 60189
Clinical Therapist—Oakbrook Terrace & Wheaton office's
Biljana Kasum, LCPC, is a skilled therapist at Suburban Behavioral Health Services, which has locations in Wheaton and Oakbrook Terrace, Illinois. Her passion is connecting with people in helping relationships, recognizing that we all struggle with various things at some point in our lives. Her primary focus is the well-being of the people she works with as she continues to expand her multicultural approach to counseling.
Biljana’s background includes working with teens, adults, and mature adults struggling with mental health issues of substance abuse and co-morbid disorders, trauma, morbid obesity, and other mood and personality disorders. She spent several years in an inpatient unit helping women of various races, cultures, and backgrounds, including the homeless population. She provided individual and group counseling, including moral reconation therapy, movement therapy, and music therapy. She also spent several years working with people with eating disorders, body dysmorphia, and obsessive-compulsive disorders, and teens and adults with ADHD.
Biljana acquired her master’s degree in counseling from Walden University, Minneapolis, Minnesota, and received supervision from established LCPCs and clinical psychologists in Illinois. She completed her training residencies in Orlando, Florida, and Atlanta, Georgia.
Biljana bases her approach to therapy on empathy, trust, and a strong therapeutic relationship. She is integrating different theoretical approaches based on the individual needs of her patients, with a special interest in acceptance and commitment therapy and cognitive processing therapy for the treatment of trauma. She is LGBTQ+-affirming.
She is fluent in Serbian, Bosnian, and Croatian.
Leave a review: https://g.page/r/CeVvMTE9piT5EBM/review
Biljana Kasum, LCPC
Social Worker
1751 S Naperville Road
Ste 207
Wheaton, IL 60189
Clinical Therapist- Oakbrook Terrace
Jane Ballis, LCPC, CADC, is a licensed clinical professional counselor at Suburban Behavioral Health Services, which has locations in Wheaton and Oakbrook Terrace, Illinois. She appreciates working with people of varied ages and abilities as a therapist. Jane seeks to understand differences in various cultures, races, and religions and strives to be as knowledgeable as possible in treating people with diverse backgrounds.
Jane’s background includes many years of helping children, adolescents, and adults express themselves through various artistic mediums such as painting, drawing, photography, and multimedia. She completed her masters in clinical psychology at the Illinois School of Professional Psychology. Jane learned behavioral therapy and cognitive behavioral therapy and trained and worked under a clinical psychologist’s supervision for many years, learning psychodynamic theory, play, and family therapy while specializing in children, adolescents, adults, and families at an APA-approved training site. Jane has practiced in child welfare and substance abuse settings. Jane has worked with at-risk men who were involved in prostitution as well as many issues such as LGBTQ, homelessness, medical, and employment challenges.
Jane has completed her EMDR Level 1 training and obtained specialized training with Ana Gomez, an author and specialist in EMDR and dissociative disorders with children. EMDR is used to treat many issues, from mild to very complex, such as PTSD, trauma, anxiety, phobias, panic disorder, obsessive-compulsive and generalized anxiety disorder, and excessive grief. Children and adolescents have alleviated their symptoms using EMDR, including depression caused by disturbing life experiences. Studies have shown that many crime victims, police officers, firefighters, and field workers were no longer disturbed by the aftereffects of violent assaults and/or the stressful nature of their work. Victims of sexual assault, natural and manmade disasters, accidents, surgeries and burn victims, family, marital and sexual dysfunction, and involvement were also assisted. Clients at all stages of chemical dependency, sexual deviation/addiction, and pathological gamblers have also been treated successfully, along with people with dissociative disorders.
Many people with performance anxiety or deficits in school, business, performing arts, and sports have benefited from EMDR as a tool to help enhance performance. People with somatic problems/somatoform disorders, including migraines, chronic pain, phantom limb pain, chronic eczema, gastrointestinal problems, CFS, psychogenic seizures, eating disorders, and negative body image, have attained relief from suffering with the help of EMDR.
Adults and adolescents have been successfully treated for diagnosed depression. Clients with acute trauma and a wide variety of PTSD and trauma-based personality issues experience substantial benefits from EMDR. There are many applications for EMDR, which has been used by many major treatment facilities, such as the armed forces.
Jane also has completed levels one and two of the Gottman Institute in couples therapy. This is a research-based couples therapy that has three phases. For nearly four decades, Dr. Gottman has conducted research on all facets of relationships, including parenting issues. At the Institute, in collaboration with Dr. Julie Schwartz Gottman, he developed an approach that not only supports and repairs troubled marriages and committed relationships but strengthens happy ones. One goal of the research is to make the services accessible to the broadest reach of people across race, religion, class, culture, sexual orientation, and ethnicity. For more information, please visit the Gottman Institute. http://www.gottman.com/the-gottman-institute/
Please leave a review: https://g.page/r/CQz4ngI4zS81EBM/review
Ms. Jane Ballis, MA, LCPC
Social Worker
1S443 Summit Avenue
Suite 201
Oakbrook Terrace, IL 60181
Christi McSweeney, LCPC
Psychologist
899 Skokie Blvd Suite 260
Northbrook, IL 60062
Franco Acquaro, PhD
Psychologist
64-1035 Mamalahoa Hwy
Suite F
Kamuela, HI 96743
Dr. Tamara Trower, PhD
Psychologist
14020 N. Western Ave.
Edmond, OK 73013
Dilnavaz Subawalla, PHD, is a psychologist at the Endocrine and Psychiatry Center in Katy and Houston, Texas. She has over 25 years of experience with patients of all ages experiencing depression, anxiety disorders, bipolar disorder, trauma and distress, marital difficulties, and trouble adjusting to life changes. She believes in partnering with her clients to achieve their mental health goals. Dr. Dilnavaz customizes treatment interventions to each client’s needs, relying on proven treatment methods like cognitive behavior therapy, humanistic therapy, and family systems therapy.
Dr. Dilnavaz earned a Master’s Degree in guidance and counseling at the University of South Florida in Tampa, and a Master’s cum Doctoral degree in clinical psychology at Nova Southeastern University in Ft. Lauderdale, Florida.
Dr. Dilnavaz sees patients ages 18 and up in the Huffmeister office in Houston and Katy, Texas. She is a licensed clinical psychologist accepting new patients at both locations. Use the convenient online scheduling tool or call the practice nearest you to book an appointment.
Dilnavaz Subawalla, PhD
Psychologist
9539 Huffmeister Road
Houston, TX 77095