Luna Sanchez Rivera, MD

Alanna Montalvan is a Board-Certified Psychiatric Mental Health Nurse Practitioner (PMHNP) with over 15 years of nursing experience, including 10+ years as a PMHNP. She has supported individuals with anxiety, depression, ADHD, trauma-related disorders, bipolar disorder, and chronic mental health needs across outpatient, inpatient, and psychiatric emergency settings. Alanna holds a Master of Science in Nursing from Hunter College with a PMHNP concentration and is expanding her clinical expertise through Family Nurse Practitioner training. She values patient-centered care and multidisciplinary collaboration.

Alanna prioritizes creating a warm, non-judgmental space where patients feel heard, respected, and supported. She takes a collaborative approach, partnering with patients to identify goals, explore treatment options, and build long-term wellness strategies. Open communication, transparency, and a holistic perspective that integrates emotional and physical health guide her practice. Patients can expect thoughtful, evidence-based care that considers life stressors, identity, family dynamics, and wellness behaviors.

Alanna begins with a comprehensive assessment to understand each patient’s history, concerns, strengths, and goals. She develops individualized treatment plans, including medication management, psychotherapy-informed strategies, lifestyle recommendations, and coordination with other providers as needed. Treatment goals are regularly revisited to ensure care evolves with the patient. She emphasizes empowerment and education, helping patients feel confident and informed throughout their mental health journey.

Dr. Steven Mathew is a trained adult and child and adolescent psychiatrist. He recently completed his child and adolescent psychiatry fellowship at the University of Miami/Jackson Health System, where he served as chief fellow. He completed his general psychiatry residency at Pine Rest Christian Mental Health Services in Grand Rapids, Michigan. Dr. Mathew earned his Doctor of Osteopathic Medicine from the Philadelphia College of Osteopathic Medicine’s Georgia campus, a satellite campus located in the Atlanta metro area. He graduated from the University of Georgia with a Bachelor of Science in Biology and afterwards obtained a Master of Public Health in Health Policy and Management.

Dr. Mathew has had extensive clinical experiences caring for patients across the lifespan in specialty inpatient units, partial hospitalization programs, emergency psychiatry, outpatient clinics, consult liaison psychiatry, and telemedicine. He has clinical expertise in treating depression, anxiety, trauma, OCD, ADHD, and tic disorders.

Dr. Mathew's treatment approach combines evidence-based medication management with supportive therapy, emphasizing empathy, collaboration, and goal-oriented care tailored to each patient and family.

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Dr. Debrey is board-certified in adult psychiatry. Her approach is client-centered, individualized, and collaborative. She focuses on building a strong therapeutic alliance with each client to work towards achieving enhanced functioning and meaning in their lives. She works with individuals experiencing a wide range of mental health concerns, including depression and other mood concerns, bipolar spectrum illnesses, OCD, PTSD, anxiety disorders, and substance use disorders. Though she specializes in medication management, she believes in an integrative and comprehensive treatment program that incorporates multiple aspects of an individual's health and wellness. Along with discussing physical health concerns, diet, exercise, personal connection, and stress management, she incorporates various therapeutic modalities, including CBT, DBT, ACT, and mindfulness, into her work. In some instances, Dr. Debrey may recommend more intensive psychotherapy with a collaborating therapist in order to help facilitate the best care possible. Dr. Debrey received her medical degree from Rush Medical College. She also holds a graduate degree in epidemiology from the Johns Hopkins Bloomberg School of Public Health. Following medical school, she completed her residency in psychiatry at Emory University School of Medicine. During her final year of residency, she served as chief resident at Grady Memorial Hospital. Prior to joining Talkiatry, Dr. Debrey was an assistant professor at Emory University Department of Psychiatry, where she worked as an attending psychiatrist at Grady Behavioral Health. While at Grady, Dr. Debrey worked primarily as a community psychiatrist with a focus on working with individuals experiencing psychosis. She also frequently worked on the inpatient psychiatry service at Grady. As an Emory faculty member, teaching and mentorship were an especially meaningful part of her work.‍

Dr. Megan Wynne is board certified in adult psychiatry and completed fellowship training in Consultation-Liaison Psychiatry (Psychosomatic Medicine). She has been in practicing psychiatry since 2006. Dr. Wynne completed her medical degree at Drexel University School of Medicine in Philadelphia, PA, her psychiatric residency at Thomas Jefferson University Hospital in Philadelphia, PA and her consultation/liaison psychiatric fellowship at Long Island Jewish Hospital in Queens, NY. She continued to work in Consultation Liaison Psychiatry at North Shore Hospital in NY, before working for nine years at Philadelphia Veterans Administration Hospital as a staff psychiatrist and associate at the University of Pennsylvania University Hospital. During this time, she worked closely with patients struggling with Traumatic Brain Injury, Post Traumatic Stress Disorder, Depression and Anxiety. She acted as an attending psychiatrist in training medical students, psychiatric residents and fellows. Following a move to New Zealand, she worked as lead psychiatrist for Te Puna Waiora, Maori Mental Health team (Indigenous Person mental health clinic) at Counties Manakau District Health Board. She worked with multiple patients facing cultural challenges, as well as psychosocial stressors (poverty, family fragmentation, poor education). During this time, she worked within the indigenous system of mental health, which treats not just emotional or physical issues for a person, but spiritual and familial as well. She has incorporated this into her treatment approach for all patients. Dr. Wynne has always believed that medication must be used in conjunction with psychodynamic therapy, and medical and social supports to most appropriately treat a patient. She offers 30-minute sessions consisting of medication management and brief therapeutic support. She specializes in treating victims of trauma, medical comorbidity.

Dr. Maxwell Schauermann is a board-certified addiction psychiatrist. He completed his medical school and residency training at Loma Linda University in sunny Southern California. He was recognized by his colleagues as Chief Resident of inpatient services for his leadership and problem-solving abilities. His passion for caring for people with substance use disorders led him to complete specialized training in Addiction Psychiatry at the University of Washington in 2024. Dr. Schauermann is known for his patient-centric approach and nonjudgmental, easy-going attitude. He typically offers 60-minute new visits and 30-minute follow-up visits. He excels in treating both psychiatric and addiction disorders, utilizing a broad array of therapeutic modalities, including psychiatric medications, supportive therapy, cognitive-behavioral therapy, dialectical behavior therapy, psychodynamic-based therapy, prolonged exposure therapy, and motivational enhancement therapy. His treatment philosophy centers on empowering patients to heal holistically�body, mind, spirit, and relationships�ensuring each individual receives tailored and evidence-based care.

Dr. Patricia Klaine is an attending physician working at Talkiatry. She is board certified in adult psychiatry. After completing her training in adult psychiatry, she continued her education by completing a fellowship in consultation-liaison psychiatry, which enables her to treat patients with a variety of medical comorbidities confidently. Dr. Klaine focuses on medication management. She offers this in addition to supportive psychotherapy in 30-minute follow up visits. For some patients, it may be important to bring in additional psychotherapy for well-rounded care. Dr. Klaine received her medical degree from St. George's University in Grenada, and after that, she completed her training in general adult psychiatry at Maimonides Medical Center in Brooklyn, New York. She went on to complete a fellowship in consultation-liaison psychiatry at Mount Sinai Hospital in New York. After completing her training, she worked on an inpatient psychiatric unit before deciding to transition into outpatient psychiatric care. She looks forward to a collaborative relationship with her patients.