Susannah Williams, MD

Dr. Erica Mark is a board-certified psychiatrist with experience in both inpatient and outpatient care. She formerly served as a Staff Psychiatrist at a VA Medical Center, where she specialized in the mental health needs of veterans. Dr. Mark earned her B.S. in Biological Sciences, Summa Cum Laude, from Hampton University, received her MD from the University of Texas Medical Branch, and completed her psychiatry residency at Tulane University School of Medicine, serving as Chief Resident in 2017.

Dr. Mark fosters a warm, supportive environment where patients feel heard and respected. She values open communication and works collaboratively to set clear, personalized treatment goals. Deeply committed to service, she has supported underserved and marginalized communities through various nonprofit initiatives.

During initial sessions, Dr. Mark takes time to understand each patient’s history, concerns, and goals. She then creates individualized treatment plans aligned with each patient's unique needs and preferences. Dr. Mark encourages ongoing dialogue to adapt care plans and support long-term progress.

Dr. Arjun Kaverimanian is an adult psychiatrist with a clinical approach emphasizing the intersection of medication-based treatment and talk therapy. He earned his medical degree from Saint Louis University School of Medicine, after which he completed his psychiatry residency training at Loyola University Medical Center. During his training, he gained experience across a wide range of mental health settings, including community mental health centers and the Department of Veterans Affairs, and worked at various levels of care—from inpatient units to partial hospitalization and intensive outpatient programs, as well as outpatient clinics.

Dr. Kaverimanian has cultivated a robust skill set in psychotherapy techniques—including psychodynamic therapy, Acceptance and Commitment Therapy, Cognitive Behavioral Therapy, supportive therapy, and mindfulness-based approaches—which he integrates alongside evidence-based medication management.

Dr. Kaverimanian is committed to understanding each patient as a whole, taking into account the interplay of psychological, social, and biological factors that shape a person's mental health. He has particular areas of interest in the treatment of depression, anxiety, and post-traumatic stress disorder.

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Zakiyyah Weatherspoon is a dual-certified Family Nurse Practitioner and Psychiatric Mental Health Nurse Practitioner with over a decade of experience. Since 2011, she has worked in family medicine, and since 2013, she has focused on mental health care across the lifespan. Her background includes treating children, teens and adults in hospitals, private practices, and community settings.

Since 2017, Weatherspoon specialized in helping individuals manage depression, anxiety, bipolar disorder, OCD, PTSD, ADHD, ODD, eating disorders, and substance use. She uses supportive therapy, solution-focused therapy, and cognitive behavioral therapy to help clients feel heard, understood, and empowered.

Weatherspoon is passionate about breaking the stigma around mental health. She encourages her clients to speak up, get help, and take control of their mental wellness. Her approach is based on the Mental Health Recovery Model, which focuses on hope, healing, and building a life beyond diagnosis.

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Dr. Merna Guirguis is a general psychiatrist known for her patient-centered and accessible approach. She blends compassion with evidence-based care, creating a supportive environment where patients feel heard. Her practice integrates psychiatric medication management with psychoeducation, empowering patients to make informed decisions about their treatment.

Dr. Guirguis emphasizes collaboration and transparency. She listens carefully to each patient’s concerns, encourages questions, and works to build a trusting therapeutic relationship. Her style is approachable and adaptable, ensuring patients feel comfortable sharing their experiences and actively participating in their care.

She begins by reviewing each patient’s history, concerns, and goals to craft personalized treatment plans. Dr. Guirguis combines current clinical needs with long-term wellness objectives, adjusting care collaboratively over time. When appropriate, she may recommend additional therapy to complement medication management and optimize outcomes.

Dr. Alexandre Cupler is a board-certified psychiatrist who began his career in community mental health in 2014, working as a counselor in psychiatric rehabilitation facilities. Since then, he has gained experience across inpatient hospitals, outpatient clinics, and residential treatment settings. Dr. Cupler earned his medical degree from Rush Medical College and completed his psychiatry residency at Chicago Medical School.

Dr. Cupler takes a patient-centered approach to care, making it a priority to ensure that each patient’s concerns are genuinely heard. He strives to create a culturally sensitive, non-judgmental, and safe environment where patients feel comfortable discussing difficult topics and working collaboratively toward their goals.

Initial sessions with Dr. Cupler focus on understanding the patient’s primary concerns, history, and treatment goals. He tailors care to each individual's preferred treatment style and ensures patients are informed about their treatment plan so they know what to expect and can take an active role in their care.

Dr. Mandel received his Bachelor of Arts and Doctor of Medicine degrees from the University of Pennsylvania. He completed his Residency in Psychiatry at Mount Sinai Medical Center in Manhattan. He has been board certified in psychiatry since 2001 and is a Life Fellow of the American Psychiatric Association. He has held numerous clinical and academic appointments including serving as Chairperson of Psychiatry at Huntington Hospital in Huntington, New York, and Assistant Professor of Psychiatry at Hofstra North Shore-LIJ School of Medicine.

Dr. Mandel has over 25 years of clinical experience treating all mental health conditions. He has a strong interest in mood and anxiety disorders, including work-related anxiety. He authored a section on the pharmacology of social anxiety in the book Work Makes Me Nervous. Dr. Mandel also has expertise working with clients diagnosed with borderline personality disorder. He has lectured on the pharmacologic management of this condition, including a presentation at the NIMH International Think Tank for the More Effective Treatment of Borderline Personality Disorder.

Dr. Mandel continually seeks to streamline complex medication regimens. He has completed a fellowship in integrative psychiatry and carefully considers the potential contributions of lifestyle and nutrition to overall mental health and well-being. By taking an eclectic approach, Dr. Mandel is able to achieve the best possible outcome for all whom he is privileged to serve.