Kristina Schnitzer, MD

Dr. Michael Heneghan earned his medical degree from Cardiff University in Wales, United Kingdom, and practiced in both inpatient and outpatient settings in the UK and Australia before moving to the United States. He completed his psychiatry residency at Tufts Medical Center in Boston and a fellowship in forensic psychiatry at the University of Colorado. Board certified in Psychiatry and Neurology, Dr. Heneghan draws on experience with psychodynamic psychotherapy, CBT, and ACT to provide well-rounded, evidence-based care.

Dr. Heneghan brings a calm, kind, thoughtful, and thorough approach to his work. He prioritizes creating a safe and supportive space where patients feel respected and understood, helping them feel comfortable sharing openly as they move toward recovery and personal growth.

In the initial session, Dr. Heneghan carefully listens to each patient’s concerns, explores their history, and works to understand their goals. He provides a clear assessment and explanation before collaborating on a personalized treatment plan. His process is rooted in open communication, shared decision-making, and a commitment to empowering patients in their journey toward wellness.

Tiffany Chaille is a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP) with nearly a decade of clinical practice and over 15 years of experience working in behavioral health. Her background includes inpatient and outpatient psychiatry, crisis-focused care, community mental health, integrated pain and psychiatry care, and telepsychiatry. She has a growing interest in functional and integrative approaches to mental health. Tiffany earned her Master of Science in Nursing as a PMHNP from Indiana University and her Bachelor of Science in Nursing from Indiana State University.

Tiffany believes mental health care is most effective when patients feel comfortable, supported, and truly heard. She takes a calm, compassionate, and nonjudgmental approach, meeting patients where they are. Her care focuses on practical, real-life treatment plans while considering sleep, stress, medical factors, and lifestyle influences. She values collaboration and aims for patients to feel informed, involved, safe, and confident throughout their care.

Tiffany begins by getting to know the person beyond the symptoms and understanding what brought them to care. She works collaboratively to develop individualized, realistic treatment plans using evidence-based medication management. Ongoing follow-up, thoughtful adjustments, clear communication, and a whole-person approach guide her work, with an emphasis on consistency and long-term support.

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.

Lauren is a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) who earned her Master of Science in Nursing from Kent State University in 2020. She has experience treating a wide range of mental health conditions, including depression, anxiety, psychotic disorders, bipolar disorder, ADHD, OCD, PTSD, and substance use disorders.

Lauren’s approach combines medication management with psychotherapy to create a well-rounded, individualized treatment plan. She takes time to listen to her patients’ concerns, fostering a safe and open environment for dialogue. Her therapeutic methods include supportive therapy, motivational interviewing, and cognitive behavioral therapy. Recognizing that medication alone may not fully address the root causes of distress, she incorporates talk therapy, lifestyle changes, stress management, self-care strategies, supplements, and social health into her care plans.

With a laid-back, non-judgmental, and empathetic style, Lauren collaborates closely with patients to ensure their treatment aligns with their unique needs and goals. Every decision is grounded in evidence-based practices and patient-centered care.

Lauren begins with a comprehensive initial assessment, gathering detailed information about each patient’s mental and physical health history, lifestyle, symptoms, concerns, and goals. This assessment informs a potential diagnosis and serves as the foundation for a personalized treatment plan. Regular follow-up appointments are scheduled to monitor progress, make adjustments as needed, and provide ongoing support.

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Shaneika Lindsay, PMHNP, is a board-certified psychiatric nurse practitioner dedicated to providing personalized and empathetic care to those in need of mental health care. Her academic journey began with a B.S. in Biology from the University at Albany. She later received her B.S. in Nursing from Pace University and attained her Psychiatric Mental Health Nurse Practitioner M.S. from Hunter-Bellevue School of Nursing, graduating magna cum laude. Shaneika's practice focuses on medication management. Occasionally, Shaneika may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. For the last seven years, Shaneika has diligently provided care to our nation's veterans, working on a dual diagnosis inpatient psychiatric unit in the VA New York Harbor Healthcare System. In her time at the VA, she has gained extensive experience in managing substance abuse and co-morbid psychiatric disorders. In addition, while attending Hunter College, she completed a yearlong clinical rotation at Casa Promesa, a mental health outpatient and inpatient facility that services some of the most vulnerable and underserved populations in the South Bronx. As a Nurse Practitioner, her primary focus is holistic care, taking into consideration all physical, psychological, interpersonal, and environmental factors when creating unique treatment plans. She strongly believes that all of these factors are interconnected and play a significant role in any individual's mental health and vitality. Shaneika's goal is to work with clients to create a safe, non-judgmental, and collaborative treatment environment that promotes sustained healing and positive self-development.

Dr. Mayra Valdivia Carlisle is a bilingual Spanish and English-speaking board-certified Adult Psychiatrist and Child & Adolescent Psychiatrist. She earned her master's degree in public health and her medical degree from Oklahoma State University Center for Health Sciences. She went on to complete her residency training in Adult Psychiatry at the University of Texas Health Science Center in San Antonio and subsequently completed her fellowship in Child and Adolescent Psychiatry. She was awarded the Excellence in Public Health Award by the U.S. Public Health Service and Surgeon General for her work addressing health disparities in healthcare. Dr. Carlisle has extensive experience in outpatient and community mental health settings.

Dr. Carlisle provides patient-centered and compassionate psychiatric care combining medication management, psychotherapeutic methods, and lifestyle modifications to create a unique treatment plan. She recognizes that each person benefits from a personalized and holistic approach to healing. Dr. Carlisle specializes in treating diverse psychiatric conditions including ADHD, anxiety disorders, depression, and post-traumatic stress disorder in children, adolescents, and adults.

During an initial visit one can expect a comprehensive evaluation aimed at understanding individual mental health history, specific concerns, and overall treatment goals. Dr. Carlisle practices a holistic approach to treating mental disorders. This is done through an individualized plan for each patient with careful consideration to medication management, therapy techniques, and lifestyle modifications. Patients can expect an empathetic and collaborative environment focused on their personal experiences and goals.

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