Jennifer Hewitt, PMHNP

Dr. Stephen Geisler is a board-certified adult psychiatrist and has been practicing for over 37 years. His practice focuses on medication management, and typically offers this in conjunction with supportive therapy in 30-minute follow-up visits. If Dr. Geisler feels you would benefit from working with a therapist in conjunction with medication management, he welcomes collaboration with your therapist to make for the best outcome. Dr. Geisler is a graduate of the New York University School of Medicine. He completed a fellowship in Psychoanalytic Psychotherapy at the Zucker Hillside Hospital of Northwell Health after finishing his residency training there. He is currently an Assistant Clinical Professor at the Donald and Barbara Zucker School of Medicine at Hofstra/Northwell. Over the years Dr. Geisler has received a number of awards including NAMI Exemplary Psychiatrist Award, The APA Irma Bland Certificate of Excellence in Teaching Residents, the Zucker Hillside Hospital Department of Psychiatry Recognition Award for Education, and twice received the Outstanding Teacher of the Year Award from the graduating residents' class. Dr. Geisler is a member of the American Psychiatric Association, the Nassau Suffolk District Branch of the APA and the American Society of Clinical Psychopharmacology. Through the years, Dr. Geisler has participated in many clinical research projects, has been the co-author of many papers, and has made many presentations. Dr. Geisler specializes in psychopharmacology, especially tailoring individualized treatment to serve the needs of patients with a variety of conditions. He has a lot of experience in treating patients with depression, bipolar disorder, anxiety disorders, ADHD, and OCD.

Dr. Emmalee Boyle is a board-certified adult psychiatrist who specializes in providing patient-centered care. She offers a mix of medication management in conjunction with supportive therapy in 30-minute follow-up visits. Dr. Boyle's areas of interest include treating mood disorders, anxiety disorders, and co-occurring substance use disorders. In addition, she enjoys helping the patient explore a holistic approach to their mental health treatment. Dr. Boyle received her medical degree from the Medical College of Wisconsin. She completed her general psychiatry residency training at Boston University Medical Center, where she was selected as co-chief resident. She also completed an additional post-graduate fellowship at the Massachusetts Institute of Psychoanalysis. During training, Dr. Boyle worked with an ethnically, culturally, and linguistically diverse patient population with various psychiatric illnesses and has experience navigating the many intersecting systems of mental health care. In addition, she worked with experts in the fields of psychosis and substance abuse. She also co-authored a book chapter on the immune system and psychiatric illness. Dr. Boyle also has particular clinical interests in immigrant and refugee health.

Dr. Jen Wygant is a board-certified psychiatrist who specializes in adult psychiatry. She completed her residency training in general adult psychiatry at the University of Michigan and received her medical degree from Rocky Vista University College of Osteopathic Medicine. However, she took a non-traditional path to medical school. She earned her undergraduate degree in nursing at Northern Michigan University where she also did Army ROTC and competed on their cross-country ski team. After graduation, she went on to work as a nurse in the Army and compete on the US National Biathlon Team.

During her training, Dr. Wygant gained extensive experience treating a wide range of diagnoses with particular emphasis on PTSD, anxiety and depression in diverse populations, including college students, LGBTQIA+ individuals, perinatal individuals, Veterans and those with socioeconomic disadvantages.

Through her work as an Army nurse, lifestyle as an elite level athlete, and training as an Osteopathic physician she has developed a holistic and compassionate approach to providing care as well as an understanding of challenges unique to athletes and Service members. She integrates multiple types of therapy into her medication management appointments and collaborates with patients to form an individualized and empowering care plan that aligns with their goals and priorities.  

Dr. Wygant looks forward to working with you!

Dr. Santos is a psychiatrist with more than 4 years of experience practicing in a variety of settings with an emphasis on psychiatric outpatient care. She is experienced in treating several psychiatric disorders including but not limited to: Bipolar and Related Disorders, Depressive Disorders, Anxiety Disorders, Trauma and Stressor Related Disorders, Obsessive-Compulsive and Related Disorders, and Substance Related and Addictive Disorders. Dr. Santos received her medical degree from the University of Queensland in Brisbane, Australia / Ochsner Clinical School in New Orleans, Louisiana. She completed her residency training at Louisiana State University in Shreveport, Louisiana. Dr. Santos tailors her approach to the individual patient. She focuses on medication management and incorporates several therapeutic techniques including supportive therapy, cognitive behavioral therapy, acceptance therapy and mindfulness.

Dr. O'Brien is a board-certified adult psychiatrist who completed his medical education at Northeast Ohio Medical University. Following his graduation from NEOMED, he completed a residency in Psychiatry and Behavioral Medicine at West Virginia University/Charleston Area Medical Center. Throughout his training, he has enjoyed working in both outpatient and hospital settings and has a great passion for medical education and teaching the next generation of mental healthcare providers. Dr. O'Brien's practice focuses on medication management for a wide variety of mental health diagnoses, including anxiety disorders, depression, Bipolar Disorders, Obsessive Compulsive Disorder, Tic Disorders, and Post Traumatic Stress Disorder. In addition to medication, he offers a mixture of Cognitive Behavioral Therapy, Dialectical Behavioral Therapy, and Psychodynamic Therapy during 30 minute follow up appointments. Dr. O'Brien believes in a truly collaborative and holistic approach to mental healthcare, striving to involve patients and all members of the healthcare team in every aspect of care.‍

Shanika is a dedicated and compassionate board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) with over a decade of experience in the mental health field. She holds a Bachelor of Science in Nursing, a Masters in Nursing Education, and a Post-Master’s Certificate as a Family Psychiatric Nurse Practitioner. Shanika is known for her patient-centered approach, prioritizing empathy, respect, and individualized care. She is committed to building strong therapeutic relationships grounded in trust and open communication.

New patients can expect a warm, non-judgmental environment where they feel heard and supported. Shanika collaborates closely with each patient to create personalized treatment plans, helping them feel empowered in their mental health journey.

Shanika begins with a comprehensive psychiatric evaluation to understand each patient’s history, symptoms, and goals. Her treatment may include medication management, supportive therapy, and psychoeducation. She specializes in anxiety, depression, bipolar disorder, ADHD, trauma/PTSD, mood disorders, and women’s mental health. Shanika has extensive experience providing care for both adolescents and adults in outpatient settings, with a particular focus on underserved communities.

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