Addiction therapists & psychiatrists in Plainfield, IL

I am a clinical psychologist licensed in California and Illinois, and can see clients from both states. I have worked with clients in the areas of depression, anxiety, relationships issues, addictions, stress management, sport and performance, bipolar disorder, and binge eating disorder. My therapy style is personable, connected, focused, and attuned.

Starting therapy can feel overwhelming, but my goal is to create a safe, collaborative, and supportive space from our very first session—whether you come as an individual or as a couple.

My client-centered, trauma-informed approach means your stories, values, and goals shape the work we do together. I help teens, adults, and couples heal from past trauma, grief, addiction, navigate anxiety and depression, and build stronger, healthier relationships.

As a bilingual therapist (English and Spanish), I’m sensitive to the cultural and relational contexts that shape who you are and how you connect with others.

For clients who desire it, I can also integrate spiritual reflection into therapy, always honoring your level of comfort.

I am a dual board-certified psychiatric and geriatric nurse practitioner with over 25 years of healthcare experience, providing compassionate, evidence-based mental health care to young adults, adults, and older adults. I specialize in treating depression, anxiety, insomnia, bipolar disorder, schizophrenia spectrum disorders, and behavioral or psychological symptoms associated with dementia and complex medical conditions.

My experience spans hospital care, rehabilitation, hospice, and long-term care settings, giving me a deep understanding of the connection between physical and mental health. I am especially comfortable supporting individuals with multiple medical concerns or those navigating life transitions related to aging, illness, or stress.

Welcome! Join me on a journey to reclaim your sense of self, direction and empowerment. As a person who has struggled with life's hardships, I am compeled to help others in these difficult times. My credentials include; Licensed Professional Counselor (LCPC), Certified Drug and Alcohol Counselor (CADC) and an Illinois Certified Domestic Violence Professional (ICDVP).

Diana Lankenau has a Master of Science in Nursing from Florida State University and Chamberlain University. She has a Bachelor's in nursing from University of Miami. BA in Psychology from Florida International University. She is Board Certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) and Family Nurse Practitioner (FNP-BC).