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Tyler O'Brien, MD

Staff Psychiatrist
Languages
English
Conditions Treated
ADHD
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
Postpartum Depression
Geriatric
Medication Management

Education and training

  • Youngstown State University, BS
  • Northeast Ohio Medical University, MD
  • Charleston Area Medical Center General Hospital , Residency

Get to know

Tyler O'Brien, MD

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.‍

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Conchata Richards, LPC

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Conchata works as a psychotherapist with over 10 years of practice but over 25 years working in the human/social services field.  She received a Bachelor of Science in Criminal Justice from Georgia State University and a Master of Science in Professional Counseling from Grand Canyon University.  

Conchata has a passion for working with special populations to include trauma, domestic violence, and offenders and victims of sexual assault. She gained this insight while working as a correctional officer and earning her undergraduate degree.

Conchata mostly utilizes CBT techniques because she believes that retraining the brain is most beneficial when recovering and getting out of your own way.  She is a trauma specialist who is compassionate, empathetic, and determined.  Conchata is also a certified grief counselor and certified forensic mental health evaluator.  This is a safe and judgment free zone, so if you are ready to work on overcoming life struggles and being a better version of yourself, welcome aboard because you have found a great therapist!

Cherie Tubeileh, PMHNP

Staff Nurse Practitioner

Cherie Tubeileh, PMHNP-BC, is a compassionate Psychiatric Nurse Practitioner dedicated to providing personalized, evidence-based mental health care. Cherie earned her master’s degree from the Medical College of Ohio and her post-master’s certification from Rush University. Outside of work, she enjoys hiking, yoga, and meditation, reinforcing her belief in the importance of balance and self-care.

With expertise in diagnosing and treating various conditions, she empowers patients through psychopharmacology and therapeutic interventions. Cherie embraces a holistic approach, recognizing the vital connection between mind, body, and spirit in the journey to mental wellness.

Her approach integrates evidence-based practices with a holistic understanding of everyone’s unique needs, ensuring personalized and effective care. Cherie has worked extensively with diverse populations, including individuals managing anxiety, depression, trauma, and mood disorders. She is skilled in psychopharmacology, therapeutic interventions, and patient education, fostering a supportive environment that empowers individuals on their journey to wellness.

Ilisse Perlmutter, MD

Director of Child and Adolescent Psychiatry

Dr. Illise Perlmutter is the Director of Child and Adolescent Psychiatry at Talkiatry. She is double board-certified in child and adolescent psychiatry and adult psychiatry. Before joining Talkiatry, Dr. Perlmutter was the Chair of Behavioral Health and Addiction Services at Bergen New Bridge Medical Center. Prior to Bergen New Bridge, she was the Director of Inpatient Psychiatry at Montefiore Medical Center-Wakefield, in New York. Over 35 years, Dr. Perlmutter has held numerous leadership roles with some of the largest hospital systems in the New York Metro Area. Dr. Perlmutter is a Distinguished Life Fellow of the American Psychiatric Association, a Fellow of the American College of Psychiatrists, and a Distinguished Fellow of the American Academy of Child and Adolescent Psychiatry. She has received awards for her contributions both locally and nationally. Dr. Perlmutter was included in Castle Connolly's "America's Top Doctors” list from 2006-2011 and 2017, as well as "Best Doctors in America” from 2009- 2012. Dr. Perlmutter received her MD from George Washington University School of Medicine and Health Sciences. After an internship in pediatrics, she completed a residency in Psychiatry at Mt. Sinai Medical Center followed by a fellowship in Child and Adolescent Psychiatry at Columbia University/New York State Psychiatric Institute. Dr. Perlmutter has held leadership roles in several academic institutions and is a Clinical Associate Professor of Psychiatry and Behavioral Science at George Washington University School of Medicine and Health Sciences in Washington, D.C. Dr. Perlmutter has authored numerous publications and research articles and has lectured and presented extensively on clinical, epidemiologic, and psychopharmacologic issues in child and adolescent psychiatry. She has made frequent media appearances addressing topical issues in disaster psychiatry during the course of her work in disaster psychiatry outreach.

Natalia Roque, MD

Staff Psychiatrist

Dr. Natalia Roque is a psychiatrist who received her BA in Biology from the University of Chicago and her medical degree from Loyola University Chicago Stritch School of Medicine. She returned to the University of Chicago to complete her psychiatry residency, where she served as Chief Resident of the outpatient psychiatry clinics and was a member of the Diversity, Equity, and Inclusion Committee. She has experience treating patients across inpatient, outpatient, and consultation-liaison psychiatry settings, with additional training in treatment-resistant depression, trauma, neuropsychiatry, ECT, ketamine, geriatric psychiatry, student counseling, LGBTQ+ mental health, women’s mental health, and culturally sensitive care.

Dr. Roque believes in building a strong therapeutic alliance grounded in empathy, respect, and curiosity. She values collaboration and open communication, ensuring that patients feel like active partners in their care. Her goal is to create a safe, supportive space where individuals feel understood as whole people, not defined solely by their symptoms. She also prioritizes incorporating cultural background and social determinants of health, including financial stressors and systemic barriers into treatment planning.

In her work, Dr. Roque begins by taking time to understand each patient’s unique story, experiences, and goals. She approaches care through a trauma-informed lens and with cultural sensitivity to ensure treatment feels safe, respectful, and relevant. Her process integrates evidence-based approaches, including psychodynamic therapy and cognitive behavioral therapy (CBT), while tailoring care plans to meet both clinical needs and patient preferences. Dr. Roque regularly checks in on progress, invites feedback, and adjusts treatment collaboratively to support an ongoing, responsive therapeutic process.

Irene Pastis, MD

Staff Psychiatrist

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.

Marnie Stefan, MD

Staff Psychiatrist

Background and credentials

Dr. Stefan is a psychiatrist with extensive experience in outpatient care, inpatient care, and assertive community treatment. She has served as a medical director for large institutions, overseeing the treatment of individuals with complex mental illnesses. Born and raised in Puerto Rico, she is fluent in both English and Spanish. She earned her medical degree from the University of Puerto Rico School of Medicine and completed her psychiatry residency at the University of Florida, where she received recognition for her skills as a psychotherapist.

Treatment approach

Dr. Stefan is deeply committed to patient-centered care, adapting her role to the individual needs of each patient. She believes in treating the whole person, rather than just a diagnosis, recognizing that each patient has unique psychosocial circumstances. She has a strong foundation in psychotherapeutic interventions and is dedicated to providing engaging, compassionate, and meaningful therapy in every patient interaction. With over 10 years of experience as a psychiatrist, she has worked extensively in telemedicine since 2013, ensuring that remote care is as effective and personal as in-person visits.

What you can expect in a first visit

Patients meeting Dr. Stefan for the first time can expect a comprehensive and holistic evaluation that considers their symptoms, personal history, and life circumstances. She takes the time to build strong therapeutic relationships, fostering a caring and engaging environment where patients feel understood and supported. Whether through telemedicine or in-person care, she prioritizes personalized treatment plans that integrate medication management and psychotherapy, ensuring the highest quality of care tailored to each patient’s needs.

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.

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Specialties
ADHD
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
Postpartum Depression
Geriatric
Medication Management
States
New York
Ohio
Pennsylvania
Languages
English
Takes insurance
Virtual visits
years experience