Merna Guirguis, MD

Dr. Taj Deen earned his medical degree from Dow Medical College in Karachi, Pakistan, and completed psychiatry residency training at Maimonides Medical Center in Brooklyn. He has over 20 years of experience at Jacobi Medical Center’s acute inpatient psychiatric unit, led an acute psychiatric unit for 10 years at Montrose VA Hospital in New York, and served for 25 years in the psychiatric emergency room at Westchester Medical Center.  

Dr. Deen prioritizes building a genuine therapeutic alliance with all patients, fostering open communication and collaboration. He works closely with patients to set clear treatment goals and objectives while creating a warm, supportive environment in which patients feel heard, respected, and empowered.  

Dr. Deen begins with a comprehensive interview to understand each patient’s history, concerns, and goals. From there, he develops individualized treatment plans tailored to the patient’s objectives, combining compassionate guidance with evidence-based psychiatric care to support meaningful progress.

Amanda Rivera, PMHNP, is a board-certified Psychiatric Mental Health Nurse Practitioner through the lifespan, certified by the ANCC in 2020. She earned a Bachelor of Science in Psychology with a biology minor from Clarkson University, followed by a Bachelor of Science in Nursing and a Master of Science in Nursing from St. John Fisher College. Amanda has over 15 years of experience in mental health, beginning in 2010 as a Therapy Aide at Rochester Psychiatric Center. She has practiced across inpatient hospitals, state psychiatric facilities, outpatient community clinics, correctional settings, group homes, and telehealth/private practice. She works with patients ages 16 and older and is highly experienced in trauma, mood and anxiety disorders, ADHD, autism, psychotic and personality disorders, substance use, and parenting challenges. She values working with families to strengthen the family unit.

Amanda values open communication and collaborates with patients to establish clear, meaningful treatment goals. She provides a warm, supportive environment where patients feel heard, respected, and empowered to take ownership of their mental wellness. Treatment is individualized, with medication decisions guided by a careful balance of safety and symptom relief. Appointments are conversational in nature, allowing care to be more personalized as patients share openly.

Amanda begins each visit by ensuring privacy and safety, then explores the concerns prompting care before gathering a biopsychosocial history through collaborative discussion. She provides education throughout sessions to help patients understand diagnoses and lived experiences. Medication options are discussed based on comfort level and clinical need. Follow-ups are scheduled at the end of each visit, with frequency adjusted as stability is achieved.

‍

Dr. Suneja practices psychiatry through a collaborative, integrative, disability and healing justice-informed lens. He rejects oversimplified binaries, recognizing that healing requires embracing complexity. His training includes Columbia, Johns Hopkins, and a global mental health fellowship at UCSF. His clinical interests include anxiety, OCD, women’s reproductive mental health, climate stress, intergenerational trauma, immigrant and refugee mental health, and substance use concerns. Based in Tucson, he enjoys desert life, reading, baking, making art, and spending time with his two dogs.

Dr. Suneja provides a healing space that prioritizes each service user’s goals and lived experiences. His approach integrates psychiatric and psychotherapeutic practices with complementary, alternative, and natural therapies, as well as harm reduction. His approach is neurodivergence-, queer-, and gender-affirming as well as trauma-informed. Rejecting the binary of “mentally ill” vs. “mentally healthy,” he recognizes the mind, body, and soul’s inherent complexity.

Dr. Suneja tailors care to each service user. The first session explores goals, treatment options, and optimal meeting frequency. In many cases, visits are more frequent at the beginning of treatment and spaced out over time. He prefers visits at least every 4-6 weeks and integrates psychotherapy into all treatment plans, with many service users benefiting from ongoing deeper therapeutic work.

Background and credentials

Dr. Joyln Ferrell is a board-certified psychiatrist with specialized training in treating depression and anxiety disorders. She earned her medical degree from Howard University College of Medicine and also holds a doctorate in pharmacy from the University of Georgia. She completed her residency training in psychiatry at VA Boston/Harvard Medical School and gained significant clinical experience at McLean Hospital. Additionally, she completed a fellowship in psychoanalytic psychotherapy at Columbia University Center for Psychoanalytic Training and Research.

‍

Treatment approach

Dr. Ferrell focuses on providing patient-centered care, emphasizing improving quality of life and helping patients reach their specific treatment goals. Her approach integrates medication management with supportive therapy. She believes in a collaborative treatment process and may recommend additional therapy support when necessary to optimize outcomes. She takes a cautious and limited approach to the use of controlled medications, ensuring responsible medication management.

‍

What you can expect in a first visit

During the first visit, patients can expect a comprehensive assessment of their symptoms, medical history, and treatment goals. Dr. Ferrell takes a thoughtful and individualized approach to care, working with patients to develop a treatment plan that incorporates medication management and supportive therapy. Follow-up visits typically last 20-30 minutes and focus on monitoring progress and adjusting treatment as needed. In some cases, she may recommend involving an additional therapist to further enhance the effectiveness of the treatment plan.

‍

Why Talkiatry?

We’re a virtual mental health practice that makes it easy to find great care. We combine quality and convenience to help you thrive—faster. Our providers, like this one, are highly trained experts who specialize in medication management and collaborate with you on a treatment plan that fits your needs and comfort level.

‍

Neena Tressa Mathew has built an impressive career in the medical field, with a strong focus on mental health. She is dually board-certified as a Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) and Family Nurse Practitioner (FNP-BC), providing care across all age groups. Fluent in English, Hindi, and Malayalam, she is licensed to practice in Florida, New York, Texas, and Georgia. Neena offers a patient-centered approach that integrates her diverse experience and certifications.

Her dedication to mental health is evident through her extensive hands-on experience in assessing, treating, and evaluating patients with a wide range of psychiatric conditions, including ADHD, depression, anxiety, PTSD, OCD, schizophrenia, and bipolar disorder. She has delivered exceptional care at institutions such as Mindful Behavioral Healthcare, AdventHealth Hospital, and Park Place Behavioral Health Care. Her international experience includes roles in Canada, where she further developed her expertise in geriatric psychiatry. Neena has also worked in various practice areas, including addiction medicine, grief counseling, and primary care.

Her academic background includes a Post-Master’s Certification from Florida State University and a Master of Science from D’Youville College in Buffalo, NY. She also holds a Bachelor of Science in Nursing from Delhi University and a Master’s Degree in Social Work from the Delhi School of Social Work. Her professional affiliations, including membership in the American Nurses Association, reflect her commitment to the field. Recognized for her academic, leadership, and research capabilities, Neena was invited to join Sigma Theta Tau International (STTI) as a graduate nursing student for her excellence in scholarship and outstanding achievements in nursing.

Neena has contributed to several U.S. nursing journals and magazines and has published and presented research articles in international peer-reviewed journals. She maintains an active academic presence through platforms like Google Scholar and ResearchGate.

Her approach to care is both traditional—prescribing evidence-based psychiatric medications—and holistic, incorporating natural treatments such as vitamins, supplements, lifestyle modifications, nutrition, exercise, and stress management. She believes in the mind-body-spirit connection, viewing individuals as whole beings rather than a collection of symptoms, echoing the philosophy of Hippocrates, the "Father of Medicine." Her holistic philosophy is evident in her skillful management of psychotropic medications and her integration of psychotherapy, including supportive therapy, cognitive behavioral therapy (CBT), and psychodynamic therapy.

Neena’s primary interest lies in exploring the relationship between mental, physical, and spiritual health. She finds great fulfillment in helping others and goes beyond diagnosis and treatment by conducting thorough mental health assessments to ensure accurate identification of psychiatric conditions. What sets her apart is her commitment to patient education—empowering individuals and their families with a deep understanding of their conditions and treatment plans, including medication as part of a comprehensive care strategy.

In addition to her clinical work, Neena serves as a clinical instructor, sharing her knowledge and insights with future healthcare professionals. This dual role highlights her multifaceted contribution to healthcare, emphasizing both treatment and education in supporting individuals on their mental health journeys.

Outside of her professional life, Neena enjoys reading, writing, beach activities, hiking, and traveling with her family. She is also actively involved in charitable work through the Lions Club. She lives by the principle:

“Give, and it will be given to you. A good measure, pressed down, shaken together and running over, will be poured into your lap. For with the measure you use, it will be measured to you.” (Luke 6:38)

Indeed, she believes that it is in giving that we truly receive.

‍

Dr. Irene Pastis is a board-certified psychiatrist who specializes in adult psychiatry.  She completed residency training at East Carolina University in both internal medicine and psychiatry.  After residency, she pursued her passion in psychiatry and stayed on as a clinical assistant professor in the department of psychiatry at East Carolina University.  In this role she specialized in treating adults with mental illness in both the inpatient and outpatient settings.  She has spent a considerable amount of time teaching residents and medical students and has published several papers focusing on the neuroscience pathways of mental health conditions.  In her daily practice, Dr. Pastis focuses on evidence-based treatments utilizing the latest clinical guidelines and current approved treatments.  In addition to medication management, she also incorporates psychotherapy in the treatment of mental health conditions.  Dr. Pastis is passionate about taking a collaborative approach with her patients to help them reach their potential.