Margaret Ngumi, PMHNP

Whitney Cohen obtained her undergraduate degree from Monmouth University where she studied Psychology and Health Studies. Whitney earned her Master's degree in Clinical Social Work from New York University, where she gained a solid foundation in evidence-based practices and therapeutic techniques. She is also a licensed clinical supervisor which has allowed her to train and mentor other aspiring social workers in the field as well as nurse practitioners and other mental health professionals. ‍Whitney has worked in a variety of settings, including education, correctional facilities, substance abuse/outpatient programs, and private practice. Her diverse experiences have equipped her with a comprehensive understanding of the complexities that individuals face daily. Whitney has worked with clients of all ages, from children, adolescents, adults, the elderly, and has a special passion for working with couples and families. She specializes in treating a variety of mental health issues, including anxiety, ADHD, stress, family/relational problems, trauma and school avoidance.‍In her practice, Whitney utilizes a scope of therapeutic approaches, CBT, DBT, and Motivational Interviewing. These evidence-based techniques allow her to tailor interventions to meet the unique needs of each client, helping them achieve their goals and overcome obstacles.

Bethanie is a board-certified Mental Health Nurse Practitioner who earned her Psychiatric Mental Health Nursing credentials and a Master’s in Psychiatric and Mental Health Nursing from Columbia University School of Nursing, where she was inducted into the Sigma Theta Tau Nursing Honor Society. She has been in practice for over 10 years, providing care to individuals with anxiety, depression, bipolar disorder, and schizophrenia. Bethanie also has a strong passion for supporting women’s mental health during the perinatal phase of life.

She believes in a collaborative partnership with her clients, working together to develop a mutually agreed-upon plan of action that maximizes the chances of success.

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Dr. Richard Shehane completed medical school at the University of Nevada School of Medicine and then went on to complete psychiatry residency training at Naval Medical Center San Diego. Dr. Shehane is a board-certified psychiatrist that specializes in the treatment of depression, anxiety, PTSD, bipolar disorder, schizophrenia, personality disorders and ADHD. Dr. Shehane has also worked extensively with patients that have experienced sexual trauma in their past and patients struggling with substance and alcohol use addictions.

Dr. Shehane will focus on two main approaches to mental health treatment: medication management and psychotherapy. Appointments will focus on a mix of interactions aimed at tailoring each patient’s specific medication needs as well as promoting mental health wellness through different types of evidence-based therapy techniques including mindfulness, CBT, CPT and psychodynamic psychotherapy.

Dr. Shehane works together patients to develop a plan that fits each patient’s individual needs. Initial appointments will focus on identifying and treating primary concerns, and then later appointments will center on building upon the therapeutic relationship to increase self-awareness, promote emotional insight, and secure lasting positive mental health changes.

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Ariella Rodriguez, LCSW, has been practicing since 2013 after earning her Master’s in Social Work from New York University. She has experience supporting individuals with stress, anxiety, family conflicts, parenting issues, and interpersonal relationships. Ariella has worked in diverse settings including a mental health clinic, an outpatient hospital program, and a nonprofit specializing in parent-child psychotherapy. She has treated a wide range of conditions including PTSD, depression, anxiety, eating disorders, and bipolar disorders.

Ariella believes you are the expert of your own story. She takes an empowering, hands-on approach that highlights your strengths, helping you break down barriers and move toward a life that feels whole, healed, and fulfilling. Her goal is to leave you feeling encouraged and motivated to achieve meaningful change.

Ariella starts by building a safe, trusting space where vulnerability and personal growth can take root. She avoids a one-size-fits-all approach, instead developing customized goals and strategies based on your specific needs. Being seen, heard, and understood is central to her practice. She meets you where you are and supports you in moving toward healing and growth.

Meet Alex Starmer, LMHC, your friendly mental health counselor here at Talkiatry. She's not just a counselor; she's your partner on your mental health journey. Alex earned her Master of Science in Mental Health Counseling from Syracuse University in 2020 and has been in the field since January 2021, working closely with clients facing mental health and substance use challenges. Alex believes in the power of the mind-body connection, and she loves to share polyvagal exercises and mindfulness techniques to help you better understand yourself. She's always learning and growing, with ongoing training in Internal Family Systems (IFS) and eye movement desensitization and reprocessing (EMDR). Her go-to tools for therapy are Acceptance and Commitment Therapy (ACT) and Cognitive Behavioral Therapy (CBT). With her, you can expect a compassionate and comprehensive approach to your mental well-being. You're in good hands with Alex.‍

Dr. Zeynep Altun is board-certified in Psychiatry and holds a Ph.D. in Neuroscience. Dr. Altun graduated cum laude from Istanbul University, Istanbul Medical School. She completed her residency training in Neurology and is Turkish board-certified in clinical Neurology. Subsequently, she moved to the U.S. and finished her Ph.D. in cellular Neuroscience at Cornell University Graduate School of Medical Sciences. Dr. Altun completed her psychiatry residency training at Albert Einstein College of Medicine, Department of Psychiatry and after, her clinical fellowship in Comprehensive Psychiatric Emergency Program at Columbia University Medical College, New York Presbyterian Hospital. Dr. Altun has practiced in various settings including Bellevue Hospital, New York Presbyterian Hospital, Columbia Doctors Faculty Practice Office, Mount Sinai West and Mount Sinai Morningside Hospitals. Dr. Altun has held various academic appointments at New York University School of Medicine Department of Psychiatry; New York Presbyterian Hospital-Columbia University Medical College Department of Psychiatry; New York State Psychiatric Institute and Mount Sinai School of Medicine Department of Psychiatry. She spent most of her professional career supervising and teaching medical students, psychiatry residents and nurse practitioners. As an adult psychiatrist, Dr. Altun has extensive theoretical knowledge of the nervous system and its disorders and more than 10 years of experience in treating various mental illnesses including mood disorders, anxiety disorders, psychotic disorders, autism-spectrum and neuropsychiatric disorders, psychiatric emergencies and crisis management as well as cognitive behavioral and supportive psychotherapy. In Columbia Doctors, she collaborated closely with the Lieber Recovery Clinic, treating young adults with various mental illnesses. The philosophy of her practice is to collaborate with patients and work together with them so that they can lead symptom-free, productive, and stable lives.