

I'm Martha, a Psychiatric and Mental Health Nurse Practitioner and the owner of Mosaic Psychiatry & Psychotherapy. I offer virtual mental health medication management and psychotherapy services based out of Brooklyn, NY.
I bring 16 years of nursing experience to my practice, and am dedicated to providing holistic, person-centered care across a wide variety of mental health challenges. My approach is rooted in looking at the whole picture of who you are and what your goals are for yourself.
My expertise lies in treating individuals navigating depression, anxiety, mood disorders, trauma, and the mental health aspects of chronic disease. Beyond diagnosis, I focus on foundational elements of wellness, including:
I’m a psychiatric nurse practitioner specializing in care for women, children, and adolescents, with a strong focus on ADHD, anxiety, and mood concerns. Many women seek care during periods of burnout, emotional overload, or major life transitions, and I provide calm, supportive, and collaborative care during these difficult moments. I also work closely with parents, helping children and teens feel safe and understood while supporting families with clear guidance and thoughtful treatment planning.
Hi, I’m Kaliym Howell, PMHNP. I’m a board-certified psychiatric nurse practitioner with experience in inpatient psychiatry and outpatient medication management. I specialize in treating anxiety, ADHD, depression, trauma-related conditions, and life transitions using a calm, collaborative, and evidence-based approach. My goal is to provide thoughtful, personalized care that helps you gain clarity, stability, and long-term wellness.
I began my career as a Fulbright Scholar, conducting research on traditional medicine in Sochi, Russia. I presented my work at the United States Embassy in Moscow, highlighting cross-cultural perspectives in healthcare and integrative practice.
After completing my grant, I attended New York University (NYU). I then completed a residency at M.D. Anderson Hospital in Houston, Texas. I went on to earn my doctorate from the University of San Diego, California, where I focused on digital telehealth treatment for psychiatric care.
I am passionate about working with Veterans and individuals experiencing Depression, Anxiety, and Mood Disorders. In 2023, I completed CIIS training in psychedelic-assisted therapy. In 2025, I was among the first providers in Colorado and in the country to become licensed as a psilocybin facilitator.


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