Monica Badillo, MD

Dr. Hussain is known for his compassionate, thoughtful approach to psychiatry and his commitment to helping patients feel genuinely seen and supported. He takes pride in getting to know each person as a whole—beyond just symptoms or diagnoses—and works to build on that from the very first session. Originally from New York, Dr. Hussain completed his undergraduate studies at the University of Buffalo, earned his medical degree from St. George’s University, and completed residency training at Northwell Health in New York and Connecticut.

Dr. Hussain treats a wide range of mental health conditions including depression, anxiety, ADHD, PTSD, OCD, bipolar and psychotic disorders. His approach is collaborative and patient-centered, with a strong focus on shared decision-making. Treatment often includes medication management and therapy techniques like cognitive behavioral therapy and motivational interviewing. Sessions are always a judgment-free space where patients feel safe, respected, and empowered.

During an initial visit, Dr. Hussain conducts a thoughtful and collaborative assessment focused on understanding a patient’s symptoms, experiences, and treatment goals. From there, he works closely with each person to develop a personalized plan, including medication options and other therapeutic strategies. His goal is to create a safe, respectful space where patients feel heard, empowered, and supported throughout their care.

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Dr. Luna Sanchez Rivera holds the position of Staff Psychiatrist at Talkiatry. After completing residency in 2016 at the Ponce Medical School Psychiatry Residency in Puerto Rico, she then moved to North Carolina to complete a subspecialty in Child and Adolescent Psychiatry at Duke University Health System. There, she transitioned into an assistant professor position, focused on structuring pediatric emergency psychiatric services, and helped support the consult and liaison pediatric service. Her years of experience have included working as an integrated care child psychiatrist within outpatient clinics at Duke University Health System, and she trained and worked as a staff psychiatrist at the Inpatient State Facility in North Carolina. She also served in the Dayton Children's Hospital outpatient clinics in Dayton, Ohio, the Appalachian Health System outpatient clinics in Linville, North Carolina, and more recently has been serving the Child and Adolescent inpatient population in Bangor, Maine. Dr. Sanchez Rivera has an approachable style aimed at providing a comprehensive evaluation for all age ranges and is comfortable managing various levels of diagnostic complexities. She provides supportive psychotherapy while using psychodynamic therapy skills to clarify her patient's constellation of symptoms, identify unifying themes and provide thorough psychoeducation throughout the process to drive positive outcomes. She integrates psychodynamic medication management approaches and is adept at family therapy interventions.

Dr. Catherine Shim is a board-certified psychiatrist and completed her training at the University of Washington, where she received additional certifications in Psychotherapy and Community Psychiatry.  Prior to joining Talkiatry, she spent years serving the mental health needs of underserved communities as well as our Veteran population.  Dr. Cat is excited to bring that same dedication and selfless service to her Talkiatry patients!

Dr. Cat is experienced in managing a multitude of mental health conditions, but her specialty is providing behaviorally oriented trauma-informed care.  Her approach is to treat primarily through psychotherapy and behavioral change, with medication management serving as an important (and often essential) adjuvant to optimizing mental health.

Dr. Cat tends to have a very casual engagement style, so expect a frank but open conversation during your first meetings with her.  Following that initial screening, anticipate a candid discussion about her approach to your condition and an initial treatment plan.  Please feel free to bring up any questions or concerns at any time during this process, and note-taking is highly encouraged!

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Dr. Seth Sherman is a board-certified adult psychiatrist who has been in practice for over ten years. At the heart of Dr. Sherman's clinical approach is a strong emphasis on establishing trust, rapport, and therapeutic alliance to help persons to feel and live well and to progress toward their goals, both in treatment and in life. Dr. Sherman begins with consultation, a compassionate, collaborative process of discovery that culminates in a working diagnostic impression and, in turn, treatment recommendations. For those with whom he engages in a treatment relationship, Dr. Sherman provides psychoeducation, medication management, and individual psychotherapy, this last modality predominantly drawing from both psychodynamic and behavioral psychological models to tailor treatment to each patient. On some occasions, Dr. Sherman may believe that additional therapy is needed and ask that you bring a therapist into your care team to provide the best outcome. Dr. Sherman received his medical degree from Stanford University and went on to complete his residency in psychiatry at Harvard University. After completing training, he cultivated a private practice of psychiatry in San Francisco, California, treating persons with a variety of psychiatric illnesses, while also providing consultation and clinical supervision to psychotherapists in day-treatment and office-based practices. Next, Dr. Sherman served as a psychiatry professor at the Florida Atlantic University Charles E. Schmidt College of Medicine in Florida, where, as Associate Director of the Psychiatry Residency Training Program, he provided psychiatric inpatient treatment while bringing leadership, scholarship, teaching, supervision, and mentoring to psychiatry residents and medical students. Most recently, Dr. Sherman worked as a senior medical officer/consultant psychiatrist in New Zealand's public health system, serving local communities with expert diagnosis and treatment for a wide range of mental health conditions. He also continued to supervise U.S.-based psychiatrists, along with New Zealand psychotherapists, in advanced and complex clinical psychopharmacology and psychotherapy.

Dr. Nicholas Sahagian is a Psychiatrist in Colorado who has been practicing since 2023. He completed his MD and Adult Psychiatry Residency at the Chicago Medical School at Rosalind Franklin University and earned his BA in Neuroscience at Skidmore College. Dr. Sahagian has experience managing a broad array of complex psychiatric diagnoses in patients of diverse socioeconomic, cultural, and clinical backgrounds. Outside of work, he enjoys hiking, biking, skiing, playing guitar, reading, and collecting board games.

Dr. Sahagian offers psychiatric medication management while also incorporating elements of cognitive behavioral therapy, motivational interviewing, internal family systems, and lifestyle interventions. He believes that every patient is unique, and he works to create a supportive environment where individuals feel heard and empowered in their care.

Grounded in the biopsychosocial model, Dr. Sahagian takes a collaborative, patient-centered approach. He partners with patients to develop personalized treatment plans that integrate biological, psychological, and social factors, with the goal of guiding them along their path to improved wellness.

Dr. Mayra Valdivia Carlisle is a bilingual Spanish and English-speaking board-certified Adult Psychiatrist and Child & Adolescent Psychiatrist. She earned her master's degree in public health and her medical degree from Oklahoma State University Center for Health Sciences. She went on to complete her residency training in Adult Psychiatry at the University of Texas Health Science Center in San Antonio and subsequently completed her fellowship in Child and Adolescent Psychiatry. She was awarded the Excellence in Public Health Award by the U.S. Public Health Service and Surgeon General for her work addressing health disparities in healthcare. Dr. Carlisle has extensive experience in outpatient and community mental health settings.

Dr. Carlisle provides patient-centered and compassionate psychiatric care combining medication management, psychotherapeutic methods, and lifestyle modifications to create a unique treatment plan. She recognizes that each person benefits from a personalized and holistic approach to healing. Dr. Carlisle specializes in treating diverse psychiatric conditions including ADHD, anxiety disorders, depression, and post-traumatic stress disorder in children, adolescents, and adults.

During an initial visit one can expect a comprehensive evaluation aimed at understanding individual mental health history, specific concerns, and overall treatment goals. Dr. Carlisle practices a holistic approach to treating mental disorders. This is done through an individualized plan for each patient with careful consideration to medication management, therapy techniques, and lifestyle modifications. Patients can expect an empathetic and collaborative environment focused on their personal experiences and goals.

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