

I am a Psychiatric Mental Health Nurse Practitioner dedicated to providing compassionate, evidence-based care. I specialize in medication management and supportive therapy for a broad range of psychiatric disorders, including depression, anxiety, bipolar disorder, schizophrenia, trauma-related conditions, substance use disorders, and others. My approach is holistic and person-centered, fostering a safe and nonjudgmental environment where clients feel supported and empowered to achieve emotional stability, improved functioning, and overall well-being.
I’m a psychiatric nurse practitioner committed to compassionate, thoughtful, and evidence-based mental health care. With more than a decade of experience in psychiatry, emergency medicine, trauma, and clinical leadership, I bring a broad skill set to my work, but human connection remains at the center of my approach.
I believe every person deserves to feel heard and supported. I help individuals navigate anxiety, depression, ADHD, bipolar disorder, personality disorders, and other mental health challenges with clarity and compassion. I take time to understand your story, collaborate on your goals, and create a treatment plan that fits your life.
My diverse background, from trauma care to outpatient psychiatry and clinical education, has strengthened my commitment to high-quality, collaborative care for patients of all ages.
At Granted Mental Health Services, my mission is to provide accessible, patient-centered care that honors your experiences and supports your journey toward a healthier, more balanced life. I’m grateful for the opportunity to walk alongside you.
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).
As one of the country’s few psychiatrists who also practices sex therapy, I can provide unique and specialized services for patients who have been marginalized and oppressed. I offer a combination of sex therapy and medication management, tailored to both your personal and medical needs. While I predominantly follow an Acceptance and Commitment Therapy (ACT) approach, I also incorporate elements of psychodynamic psychotherapy, Cognitive-Behavioral Therapy (CBT), trauma-informed therapy, and supportive therapy. I completed medical school at the Indiana University School of Medicine (2021), and completed psychiatry residency training at University of Chicago (2025).
I treat 18+ individuals, and specialize in treating individuals within any sexual minority group — including members of the LGBTQIA+, trans, gender-expansive, non-monogamous, and kink communities — plus those who participate in unconventional sexual practices. I also treat couples and individuals within various relationship structures (such as triads, polycules, or other non-monogamous relationships).
I am a dual-certified Psychiatric Mental Health Nurse Practitioner and Family Nurse Practitioner, providing whole-person care that recognizes the connection between mental, emotional, and physical health. I specialize in treating anxiety, depression, and Women's Health, and I offer a compassionate, nonjudgmental space where you can feel heard, supported, and empowered. Outside of my practice, I enjoy traveling, event decorating, and spending quality time with my family. I believe maintaining balance and personal fulfillment is an important part of overall well-being, and I bring that same perspective into the care I provide.
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.
I am commited to providing compassionate patient-centered mental health care


Headway makes it easy to find support for your mental health — from finding the right provider, to understanding costs, to scheduling with ease.