Ashlyn Tellers, PMHNP

Staff Nurse Practitioner
Languages
English
Conditions Treated
ADHD
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma

Education and training

  • University of Arizona Doctor of Nursing Practice (DNP)

Get to know

Ashlyn Tellers, PMHNP

Dr. Ashlyn Tellers is a board certified Psychiatric Mental Health Nurse Practitioner. She received her Doctorate degree in nursing with an emphasis in psychiatry, in 2020 from the University of Arizona. She has been caring for mental health patients for twelve plus years in the long-term care, inpatient, residential, and outpatient settings. She specializes in treating adults with depression, anxiety disorders, bipolar disorder, ADHD, and OCD with medication management and supportive therapy. She focuses on educating her patients to build a therapeutic and safe treatment plan with every patient. Dr. Tellers encourages her patients to discuss their past mental history and current stressors to finding the root cause of their triggers and identify healthy coping skills, while also referring patients to therapists for more specialized therapies.

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Farrah Lamoreux, PMHNP

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Farrah has worked almost exclusively in community mental health centers in Iowa and in Arizona for the last 15 years. She has been providing telepsychiatry services since 2013 across several states, serving hospitals, community mental health centers, local jails, and residential treatment facilities. Farrah was lead prescriber for Living Out Loud, a mental health program exclusively for LGBTQ+ persons. She has worked with patients with comorbid mental health & HIV+ status, and a long history of working with persons with severe mental illness.

Farrah has mentored countless new Psychiatric Nurse Graduates in their first year of outpatient practice and precepted students working to achieve their Psychiatric Nurse Practitioner Certification. She was also part of the pilot program for the Integrated Behavioral Health Home, which integrated primary care into treatment for SMI patients.

Farrah Lamoreux offers a warm patient centered approach to psychiatry. She is well known for being easy to talk to, and down to earth. Farrah believes that the patient is the most important part of the treatment team, and engaging patients in the decision-making process of their treatment. Patients say that she listens, they feel heard, and that she tailors care to what best fits your needs. She enjoys working with therapists whenever possible to ensure the best outcomes. Farrah specializes in the treatment of ADHD, but also treats Depression, PTSD, Anxiety, Panic, Agoraphobia, OCD, Autism and Bipolar Disorder.

Wayne McIntosh, PMHNP

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Wayne R. McIntosh, DNP, PMHNP-BC, is a dedicated mental health professional with over a decade of experience in psychiatric care. A graduate of Arizona State University, where he earned his Doctor of Nursing Practice with distinction, Wayne also holds a Bachelor of Science in Nursing from Grand Canyon University and an Associate of Science in Nursing from Harry S. Truman College. He is certified as a Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) and has been actively practicing since 2015.

Wayne specializes in family-centered care, working with individuals aged 18 to 65. Whether navigating anxiety, depression, ADHD, or life changes, he guides patients through tailored diagnostic and treatment plans that may include therapy, coping strategies, and, when appropriate, medication. With a focus on clear communication and collaboration, he empowers patients in their mental health journey, helping them understand their challenges, implement practical tools for improvement, and create lasting change.

Throughout his career, Wayne has served as a Psychiatric Nurse Practitioner and Associate Director of Medical Services, managing multidisciplinary teams and fostering accessible, high-quality care. As a Faculty Associate at Arizona State University, he has mentored future nurse leaders, emphasizing clinical excellence and patient advocacy. His military background and volunteer efforts further highlight his commitment to serving diverse populations with compassion and dignity.

Jaime Sather, PMHNP

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Jaime Sather, PMHNP is a board certified psychiatric nurse practitioner with over 20 years' experience in the mental health field. Specialty areas include ADHD, anxiety, depression, mood disorders, substance abuse, PTSD, and women’s health. Clinical experience with inpatient, outpatient, detoxifications rehab, psychiatric emergency department, IOP, and PHP.

Comprehensive psychiatric evaluations, medication management, and brief psychotherapy are provided. Besides medication management with psychotherapy, individual therapy may be recommended for the best possible patient outcome.

Patients feel comfortable discussing their concerns in a non-judgmental therapeutic environment. Education is provided about diagnosis and treatment options with the patient being empowered to be an active part of their treatment plan.

Catherine Sheahan, PMHNP

Staff Nurse Practitioner

Cate Sheahan, nurse practitioner, is dual certified in psychiatry and family medicine. She completed her masters in nursing education at East Carolina University, her post graduate training in family medicine at Duke University and her post graduate training in psychiatry at the University of St. Joseph. Cate has practiced in a variety of settings including clinics, skilled nursing and assisted living facilities, hospitals and community outreach. She appreciates how her years of varied experience have enriched her practice and compassion for others. She enjoys teaching and assisting others to build on their unique experiences and strengths.

Cate believes we are each unique in our experiences and our expression of those experiences. Using a collaborative approach, she seeks to discover, along with you, her patient, what is going on in your life and deciding together what treatment is best suited for you. Cate believes medication can be a solid foundation or a transitional step toward improved mental health. She also believes in 'less is more' when it comes to medications.

During each 30-minute session, Cate will employ supportive, motivational and reframing among other therapeutic techniques to foster confidence, insight and healing as you navigate your mental health journey. She believes the mind, body and spirit are an integrated whole and therefore encourages holistic self-care such as healthy eating, good sleep hygiene, regular exercise and mindfulness practices as part of your treatment. If more intensive therapy is needed, Cate will work with your therapist or make appropriate referrals as needed.

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Director, Psychiatric Nurse Practitioners

Rebecca Kostopoulos, PMHNP, is a board-certified psychiatric nurse practitioner dedicated to helping people struggling with mental health concerns find ways to live a full and balanced life. Rebecca's practice focuses on medication management. Typically, she offers this in conjunction with supportive or emotionally focused therapy during 30-minute follow-up visits. However, occasionally Rebecca may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. She received her Master of Science in Nursing with a specialty in psychiatry from Columbia University and her Bachelor of Science in Nursing from Boston College. She is trained in psychiatric diagnosis, medication management, and psychodynamic and cognitive-behavioral therapies. Rebecca has extensive experience evaluating and treating adults in a variety of settings over the past 10 years. Previously, she worked at Elmhurst Hospital's Comprehensive Psychiatric Emergency Program and at Gracie Square Hospital in an inpatient unit, in addition to community health settings and skilled nursing facilities. As a nurse practitioner, she believes that addressing mental health concerns is just as important as addressing physical concerns. She values the therapeutic relationship with a collaborative and empathic approach to treatment.

Huong Phan, LPC

Staff Licensed Professional Counselor

Huong "Claire" Phan is a licensed mental health counselor at the New York State Education Department Office of the Professions and a licensed professional counselor at the Texas State Board of Examiners of Professional Counselors. Claire completed her Master's in Mental Health Counseling at Brooklyn College, City University of New York. Claire has been practicing for 5 years as a licensed therapist providing counseling for mood disorders, obsessive compulsive disorder, prolonged grief disorder, adjustment disorders, women's issues, and also helping clients navigate relationship difficulties and other challenges. Claire completed her clinical internship and worked as a therapist at the Institute for Human Identity, one of the first psychotherapy centers in New York to provide LGBTQ+ affirmative psychotherapy. Claire is passionate about serving the LGBTQ+ community and providing a safe space for her clients regardless of differences in gender identity, expression, sexual orientation, race, and culture. Claire practices with a holistic approach that incorporates cognitive behavioral, dialectical behavioral, and mindfulness-based therapy techniques to help clients gain awareness, practice acceptance, and foster resiliency. Each of these therapy modalities requires active participation from the client to connect mind with body, intent with action so that healthier patterns can emerge.

Catherine Sheahan, PMHNP

Staff Nurse Practitioner

Cate Sheahan, nurse practitioner, is dual certified in psychiatry and family medicine. She completed her masters in nursing education at East Carolina University, her post graduate training in family medicine at Duke University and her post graduate training in psychiatry at the University of St. Joseph. Cate has practiced in a variety of settings including clinics, skilled nursing and assisted living facilities, hospitals and community outreach. She appreciates how her years of varied experience have enriched her practice and compassion for others. She enjoys teaching and assisting others to build on their unique experiences and strengths.

Cate believes we are each unique in our experiences and our expression of those experiences. Using a collaborative approach, she seeks to discover, along with you, her patient, what is going on in your life and deciding together what treatment is best suited for you. Cate believes medication can be a solid foundation or a transitional step toward improved mental health. She also believes in 'less is more' when it comes to medications.

During each 30-minute session, Cate will employ supportive, motivational and reframing among other therapeutic techniques to foster confidence, insight and healing as you navigate your mental health journey. She believes the mind, body and spirit are an integrated whole and therefore encourages holistic self-care such as healthy eating, good sleep hygiene, regular exercise and mindfulness practices as part of your treatment. If more intensive therapy is needed, Cate will work with your therapist or make appropriate referrals as needed.

Peter Szeibel, MD

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Dr. Peter Szeibel is board certified in adult psychiatry and has been practicing for over 36 years. His practice has focused primarily on medication management within the context of a supportive psychotherapeutic relationship. He also utilizes cognitive behavioral techniques. If the patient requires more intensive psychotherapy, Dr. Szeibel refers the patient to a therapist and collaborates with the therapist. Dr. Szeibel has experience in treating Depressive Disorders, PTSD, Panic Disorder, OCD, Bipolar Disorder, ADHD, and many other conditions. He feels his personal strengths include his inquisitiveness, scientific curiosity, and his desire to understand his patients better. Dr. Szeibel was born in Hungary, just a few months before the Hungarian Revolution against the Soviets broke out in 1956. He and his family fled under difficult circumstances and immigrated to the United States. Dr. Szeibel grew up in New York City. He attended The Bronx High School of Science, followed by Columbia University for his B.A., where he took a double major in chemistry and music. After obtaining his M.D. from S.U.N.Y in Syracuse, he returned to New York City for residency and fellowship training. During this time he won the Bendheim Fellowship Award at Cohen Children's Medical Center for his research study which examined the effects of background music on the academic performance of children with ADHD. His current areas of interest include adult ADHD, psychiatric and medical co-morbidities, and the LGBTQ population.

Frank Miller, LPC

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Frank Miller is a Licensed Professional Counselor with years of experience in a variety of mental health settings. Frank has worked in hospitals, community mental health care, a treatment center for clients struggling with co-occurring mental health and substance use disorders, as well as providing individual outpatient therapy to a wide variety of clients.

Frank attended graduate school at Midwestern State University in Wichita Falls, TX, while working in the mental health field, earning a Masters degree in their Clinical Mental Health Counseling Program in 2019. Frank has provided individualized, client-focused therapy for adults and adolescents since that time, helping others to find purpose and meaning in their lives.

Frank utilizes a combination of Cognitive Behavioral Therapy, Dialectical Behavior Therapy, and Reality Therapy, depending on the client’s needs. Frank believes that we can all benefit from eliminating distorted thinking leading to negativity and self-defeat, and becoming more emotionally regulated, stress tolerant, and mindful, putting us back into the driver’s seat of our daily lives. We may then achieve the freedom to positively fulfill our needs, pursue our goals, and feel confident in our journey towards balance and peace of mind.

Lisa Ekeanyanwu, MD

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Background and credentials

Dr. Lisa Ekeanyanwu is a board-eligible psychiatrist who completed her psychiatry residency training at Stanford University. She has gained experience in a wide range of clinical environments, including inpatient and outpatient care, community mental health settings, emergency rooms, telehealth services, and international clinical fieldwork.

Treatment approach

Dr. Ekeanyanwu’s practice is centered on pharmacotherapy, which she integrates with supportive therapy, cognitive behavioral therapy (CBT), and psychodynamic therapy to provide comprehensive psychiatric care. She takes a collaborative and individualized approach, tailoring treatment to meet each patient’s unique goals and improve their overall quality of life. She has a special interest in cultural and micro-cultural influences on mental health and strives to provide culturally competent care that respects each patient’s life experiences and values. When she believes additional therapy may be beneficial, she may recommend incorporating a therapist into the care team.

What you can expect in a first visit

During the first visit, patients can expect a thorough evaluation where Dr. Ekeanyanwu carefully assesses their symptoms, medical history, and personal treatment goals. She fosters a collaborative and patient-centered environment, ensuring that each treatment plan aligns with the patient’s individual needs. She provides medication management along with therapeutic support and, when appropriate, may recommend additional therapy to optimize outcomes. Her approach prioritizes safe, effective, and culturally sensitive care that evolves to support patients throughout different stages of their lives.

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.

Michelle Shya, LCSW

Staff Licensed Clinical Social Worker

Michelle Shya, Licensed Clinical Social Worker (LCSW) at Talkiatry, has provided care in the field for almost a decade. Working with individuals and families, she has connected and fostered ties with a broad spectrum of clients, including adolescent, adult, and geriatric services. Michelle's practice style centers on providing a safe and understanding space for clients to share, learn, identify, and address their unique therapeutic needs. Using cognitive behavioral therapy (CBT), Michelle focuses on the relationships between thoughts, emotions, and behaviors to assist the client in discovering their personal strengths and motivation to realize their individual life goals. Michelle completed her undergraduate Social Work education at Millersville University. Later at Marywood University, she earned her Master's in Social Work, with a specialization in Child and Family Practice. Michelle has had a wide variety of experiences working as a Social Worker in therapeutic and social service settings. She has provided case management and therapeutic care in domestic violence shelters, treatment foster care, community organizations, and hospice in-home support. In Michelle's experience in providing therapy, she has maintained a generalist practice, working with a variety of individuals facing personal barriers and challenges. By taking a step-by-step therapeutic approach, the client is able to better understand and process their thoughts as well as feelings to drive actionable change.

Gihan Abdel Razik, MD

Staff Psychiatrist

Dr Razik is a board-certified psychiatrist who has been practicing for over 20 years. Throughout her career she has helped thousands of patients overcome their mental health struggles through medication management and a combination of supportive and psychodynamic psychotherapy. She graduated from Ain Shams University School of Medicine in 1992 and went on to do her psychiatry residency training at the University of Cincinnati Medical Center, after which she became board-certified as Dr. Razik has practiced psychiatry in various settings including private practice where she has experience managing patients with depression, anxiety, bipolar disorder, OCD, ADHD, panic disorders and post-traumatic stress disorder. Early on in her career she worked with veterans at the Dayton VA Medical Center as well as with the severely mentally ill patients in community mental health. Dr. Razik lives in Mason, Ohio. In her free time, she enjoys hiking, reading, cooking, traveling, and spending time with her family.

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