

Seeking therapy in Crystal Lake? Headway offers flexible virtual and in-person sessions with 278 providers trained in evidence-based approaches. Access mental healthcare support with insurance coverage and free intake consultations available now.
Hi, I’m Gretchen, a board-certified Psychiatric-Mental Health Nurse Practitioner (PMHNP, ANCC) with a Master of Science in Nursing from Lewis University. I work with individuals, teens, and families navigating anxiety, depression, trauma/PTSD, ADHD, and substance use concerns, providing care in both English and Spanish. I bring experience from emergency departments, inpatient units, outpatient clinics, and private practice, and I strive to create a safe, judgment-free space where clients feel heard, respected, and supported. I value collaboration and flexibility, tailoring each session to your needs so you can feel empowered to make meaningful changes.
I’m a Psychiatric Mental Health Nurse Practitioner (PMHNP) and mom of four with a passion for helping people feel balanced, understood, and supported. I earned my nursing degree from Chamberlain University in Chicago and completed my psychiatric graduate training at the University of Kentucky. I’ve been proudly serving patients as a PMHNP since 2022.
I provide care for children (6+), teens, and adults, including parents, professionals, students, and anyone navigating life transitions or emotional challenges. My focus areas include: ADHD, anxiety & panic, depression, bipolar disorders, trauma & PTSD, emotional dysregulation and impulsivity, sleep issues, and mood and behavior concerns in children/teens.
I'm a board-certified psychiatric-mental health nurse practitioner with over 10+ of experience in the mental health field, and 3 years as a psychiatric mental health nurse practitioner. I founded Isimi Health & Wellness to provide thoughtful, evidence-based psychiatric care rooted in compassion, cultural humility, and a deep respect for the mind-body connection. My clinical background spans across PHP/IOP settings, Outpatient psychiatry, TMS, and telepsychiatry. I’ve worked with diverse populations experiencing anxiety, depression, trauma, mood disorders, and life transitions. Whether you're seeking support for mood instability, clarity around your medication options, or a space to reset and realign, I’m honored to walk alongside you on your wellness journey.
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).
I have a doctorate degree in nursing from Maryville University St Louis, Missouri. I have clinical experience in mental health services of over ten years. I excel in psychiatric evaluation and medication management,enhancing patient well-being through expert care and cultural competent practices.
I am a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) with over a decade of experience in mental health care, supporting individuals across inpatient and outpatient settings. Through my work, I have cared for clients with a wide range of needs, including chronic and severe mental health conditions, and I understand how overwhelming it can feel to navigate symptoms while trying to maintain daily life.
My care philosophy is centered on partnership. Treatment is not about taking over your care, but about working with you to explore your symptoms, goals, and values. Together, we develop a treatment plan that feels respectful, personalized, and empowering. If you have concerns or hesitations about medication, we will discuss all available options openly and thoughtfully, moving at a pace that feels right for you.
I work with individuals experiencing depression, anxiety, trauma, ADHD, bipolar disorder, schizophrenia, OCD, and other mood and thought-related conditions. During the initial session, we focus on understanding your concerns, reviewing your history, and identifying practical steps toward improvement. Care may include psychiatric evaluation, medication management when appropriate, brief psychotherapy, education, and ongoing support.
I believe mental health care should feel supportive, clear, and collaborative—not rushed or overwhelming.
You do not have to face these challenges alone. My role is to help you reduce symptoms, strengthen coping skills, and regain balance so you can function at your best and move forward with confidence and stability.
Welcome! I’m a board-certified psychiatrist and a multi-platform Patient-Choice Award recipient. If you’re looking for a smaller practice to help with medication management +/- talk therapy, I may be the right fit for you.
I’m dedicated to providing compassionate, evidence-based mental health care for individuals of all backgrounds. My goal is to create a safe space where you feel supported, understood, and empowered to take control of your mental well-being. I value collaboration, transparency, and genuine connection in the healing process.











Headway makes it easy to find support for your mental health — from finding the right provider, to understanding costs, to scheduling with ease.
Finding psychiatrists in Crystal Lake starts with knowing what type of mental health care you need. Psychiatrists and psychiatric mental health nurse practitioners can diagnose mental health conditions, prescribe medication, and manage medication as part of care. Therapists provide talk therapy and may work with you on concerns like anxiety, depression, ADHD, trauma, or relationship stress. If you are looking for support with anxiety, depression, ADHD, bipolar disorder, OCD, or medication management, review each psychiatrist’s listed specialties and bio to see whether their training matches your needs.
In a smaller market like Crystal Lake, local psychiatry appointment options may be more limited than in larger parts of Illinois. Virtual appointments can expand your search while still giving you access to psychiatrists who are licensed in Illinois. Psychiatric care often includes shorter, less frequent medication management visits than therapy sessions, though some psychiatrists also offer therapy. Some people see both a therapist and a prescriber. As you compare options, look at appointment availability, whether the psychiatrist is accepting new patients, session format, and profile details that explain their communication style and approach to care.
Psychiatric care in Crystal Lake can be a significant expense without insurance. Using in-network insurance is one of the most reliable ways to reduce session costs and understand your out-of-pocket expense before you book. Headway helps you search psychiatrists who match your preferences, verify your insurance, and see an estimated cost upfront. Every psychiatrist listed is accepting new patients, making it easier to review bios, compare virtual and in-person options, and book directly when you’re ready.
If you're already taking psychiatric medication and considering switching providers, talk to your current prescriber before changing or stopping any medication — most psychiatric medications shouldn't be stopped abruptly. Anyone experiencing thoughts of self-harm or in acute crisis should call 988 or go to the nearest emergency department rather than wait for an outpatient appointment.
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