Ruchir Arvind, MD

Ashlyn Tellers is a board-certified Psychiatric Mental Health Nurse Practitioner. She earned her nursing degree with an emphasis in psychiatry in 2020 from the University of Arizona. With over twelve years of experience, she has cared for mental health patients across long-term care, inpatient, residential, and outpatient settings.

Ashlyn specializes in treating adults with depression, anxiety disorders, bipolar disorder, ADHD, and OCD through medication management and supportive therapy. She emphasizes patient education and works collaboratively to build therapeutic and safe treatment plans. She encourages open discussions about past mental health history and current stressors to help identify root causes and develop healthy coping strategies. When appropriate, she refers patients to therapists for more specialized care.

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Amanda Sager is a Licensed Professional Counselor (LPC) with experience working in group practice settings and Post-Traumatic Stress retreat environments. She works with individuals who have experienced trauma and significant life stressors. Amanda earned a master’s degree in Counseling from Concordia University Irvine, as well as an additional master’s degree in Coaching and Athletic Administration.

Amanda is a compassionate and dedicated therapist who specializes in helping individuals navigate profound life challenges, build resilience, and move toward meaningful healing. She provides a safe, non-judgmental space where patients can process pain, reconnect with inner strengths, and reclaim their personal narratives. Her therapeutic approach is integrative, collaborative, and trauma-informed, with an emphasis on creating a strong, trusting relationship where patients feel truly seen and understood.

Amanda begins treatment by developing a thorough understanding of each patient’s history, concerns, and goals during the initial session. From there, she works collaboratively with patients to create individualized treatment plans that align with their personal goals and support sustainable growth and healing.

Svetlana Schwartz, PMHNP, is a board-certified psychiatric nurse practitioner with 18 years of experience in outpatient psychiatry. She provides care for individuals with a wide range of mental health conditions, including depression, anxiety, substance use disorders, ADHD, bipolar disorder, OCD, schizoaffective disorder, and schizophrenia.

Her practice focuses on medication management, often combined with supportive or cognitive behavioral therapy. Svetlana earned her Master of Science in Nursing with a specialty in adult psychiatry from the University of Massachusetts Lowell and her Bachelor of Science in Nursing from the University of Massachusetts Boston. She is trained in psychiatric diagnosis, medication management, and both psychodynamic and cognitive-behavioral therapies.

Over the past 18 years, Svetlana has gained extensive experience evaluating and treating adults in outpatient settings. She previously worked at Arbour HRI Outpatient Clinic in Massachusetts and, for the past decade, has served patients at Memorial Healthcare System in Florida.

Svetlana believes that addressing mental health is just as important as addressing physical health. At Memorial Healthcare System, she collaborated with the Mind-Body Wellness Clinic to support both the medical and psychiatric needs of her patients. She has also contributed to the training of psychiatric and internal medicine residents in outpatient psychiatry. Her approach emphasizes the integration of medication management with individual therapy to provide comprehensive, patient-centered care.

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America Calderon is a bilingual, National Certified Counselor (NCC), Licensed Mental Health Counselor in the state of New York with experience providing services for children, adolescents, and adults. America specializes in the treatment of anxiety, depression, trauma, adjustment disorders, life transitions, stress management, and other comorbid disorders. She holds a BA in Psychology from the University of Central Florida and a MSEd. in Clinical Mental Health Counseling from St. John's University in New York. America provides patients with a genuine, nonjudgmental, and supportive environment to help empower them and recognize their potential. She utilizes various treatment modalities which include Cognitive Behavioral Therapy, Motivational Interviewing, Mindfulness, and Relational-Cultural Therapy techniques. She practices from a person-centered and multicultural approach to build a meaningful, therapeutic relationship. Prior to becoming licensed as a psychotherapist, America was an educator in the state of Florida and New York with over 5 years of experience in the field. She is passionate about providing psychoeducation as it increases our insight into various mental health issues.

Background and credentials

Dr. Gerald Matthews is a board-certified adult psychiatrist. He earned his medical degree from the University of Louisville School of Medicine in Louisville, KY. Following medical school, he entered active duty service in the U.S. Army, where he completed his psychiatry residency at Tripler Army Medical Center in Honolulu, HI. After completing his training, he practiced as a staff psychiatrist at Fort Hood, TX, fulfilling his service obligation.

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Treatment approach

Dr. Matthews specializes in medication management, working primarily with adult patients in an outpatient setting. While his primary focus is pharmacological treatment, he frequently collaborates with therapists to provide comprehensive care when indicated. He has extensive experience treating civilians, active-duty military personnel, and veterans, addressing conditions such as mood and anxiety disorders, psychosis, and trauma-related disorders.

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What you can expect in a first visit

During the first visit, patients can expect a thorough psychiatric evaluation where Dr. Matthews takes time to understand their history, symptoms, and treatment goals. He provides a structured yet compassionate approach to care, discussing medication options and potential therapeutic interventions. For patients who may benefit from additional therapy, he collaborates with therapists to ensure a well-rounded treatment plan tailored to each individual's needs.

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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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Seth Sultan, LCSW, earned his Master of Social Work degree from California State University, Northridge. He is a practitioner of Somatic Experiencing; a psychobiological treatment focused on resolving trauma and stress. Seth also has specialized training in Exposure and Response Prevention (ERP) for the treatment of OCD. He integrates these modalities with Cognitive Behavioral Therapy (CBT), Mindfulness, and Attachment Theory to provide a holistic and individualized therapeutic experience.

Seth believes therapy is a space where individuals should feel heard, seen, and understood. He offers a supportive and nonjudgmental environment that encourages self-discovery and personal growth. His goal is to help clients move toward their best selves while building stronger, healthier relationships.

Seth utilizes a collaborative and compassionate approach, empowering clients to challenge old patterns and create meaningful change. He strives to establish a sense of safety within the therapeutic relationship, exploring emotional, physical, cognitive, and spiritual dimensions to help each person live a more authentic and fulfilling life.