(she/her)
I am a board-certified psychiatric nurse practitioner. I received my PMHNP license in 2023. Prior to becoming a NP, I was a mental health nurse, nurse educator and mental health change agent for 19 years. As a mental health advocate my goal is to ensure that each client receives individualized, and patient centered care, to help you along your journey to becoming a "new you." I treat individuals with the following mental health disorders: major depressive disorder, anxiety, trauma, and bipolar disorder. Once you book a session, you will receive an email with a link to our session — you can join the telehealth session from the email or from your Client Portal dashboard. Just some FYI's 1. Make sure you complete all forms at least one day prior to your scheduled appointment. IF ALL FORMS ARE NOT COMPLETED-THIS INCLUDES THE INTAKE FORM, YOUR APPOINTMENT WILL BE CANCELED. 2. If your symptoms are severe and you are having any suicidal ideations you will need to find an in-person provider. 3. I don't prescribe any controlled substances or any stimulant medications. 4. I only assess and treat depression, anxiety, trauma, mood disorders-such as bipolar disorder. 5. If you are prescribed medications, you will need to schedule a monthly follow-up to get medications refilled. You will not get medications refilled without a follow-up appointment. 6. If you don't schedule a follow-up appointment within one month of your last appointment, you will become inactive in the system.
In preparation for first session please ensure all paperwork is completed or your appointment will be rescheduled. In our first session, my goal is to make you feel comfortable. We will start with a brief introduction, and you will also provide some background on why you need mental health services. During the session, you will receive a diagnosis, medication management and therapy if needed. I will serve the adult and geriatric population and help to identify and treat psychiatric conditions holistically.
I offer a comfortable, relaxed therapeutic atmosphere filled with support and active listening.
I love working with young adults and the elderly with anxiety/panic disorders, mood disorders and trauma. If you are feeling tearful, irritable, or having issues with attention and focus, allow me to help you determine a course of treatment that can help you feel more like yourself. I will use a combination of assessment, evaluation and talk therapy to ascertain any underlying mental health alterations to develop a diagnosis and care plan to promote positive behavioral changes.
Other specialties
I identify as
Motivational Interviewing
I use motivational intervieing a client-centered, evidence-based communication style that aims to help individuals build motivation and make positive changes in their lives. It is a collaborative approach that focuses on eliciting and reinforcing the client's own reasons for change.
16 ratings with written reviews
April 17, 2026
My psych NP was super kind and easy to talk to. She really listened to me and made me feel comfortable and supported from the start. She explained everything clearly and helped me feel confident about my treatment plan. I truly felt heard and cared for. I definitely recommend her!
December 19, 2025
As the year comes to an end, I can see a positive difference in my life & can attribute it to my treatment by Cassandra. I am so thankful for her expertise as a great medical provider.
November 21, 2025
Ms. Gilliam was very knowledgeable and caring, and I left the session feeling as if she would be a good match for me.