Susannah Williams, MD

Dr. Michael Fiori is Board Certified in Adult Psychiatry and Addiction Medicine. He has practiced general psychiatry for 37 years, and has also sub-specialized in Addiction Psychiatry for the past 20 years. Dr. Fiori's practice emphasizes Diagnostic Clarification, which is an ongoing process. He is highly trained and experienced in the biological and psychosocial underpinnings of psychiatric problems. He typically follows diagnostic evaluations with 30-minute follow up visits for medication adjustments and brief therapy. Dr. Fiori often enjoys collaborating with outside therapists when needed. Dr. Fiori graduated from Amherst College and received his medical degree from NY Medical College. He subsequently completed his residency in psychiatry at the Mount Sinai Medical Center in NYC. He excelled in Academic Psychiatry as both a teacher and a mentor. His practice has always combined medications with evidence-based therapies to alleviate suffering and maximize functioning. In addition to his work as a Board Certified Adult Psychiatrist, he has specialized in helping patients suffering from Substance Use Disorders. Dr. Fiori is Board Certified in Addiction Medicine, and helps patients understand the interrelationships between their Substance Use Disorders and their Psychiatric illnesses.

Lance Briggs is a dedicated Psychiatric Nurse Practitioner with over a decade of clinical and leadership experience. A graduate of the University of North Dakota, Lance began as a psychiatric RN in acute inpatient settings before becoming a psychiatric RN supervisor in a major Houston hospital while pursuing advanced practice.

After becoming a PMHNP, Lance initially worked with outpatient addiction treatment and severe mental illness populations, later expanding into bariatric psychiatry to support patients preparing for weight-loss surgery. When the COVID-19 pandemic paused bariatric procedures, Lance founded a private practice—Grey Matters Mental Health—in Seattle, which was later sold to a larger healthcare organization in Minnesota. Lance then transitioned into correctional mental health, serving underserved populations within the criminal justice system. Currently, Lance is working at Talkiatry, providing compassionate, high-quality care informed by experience across diverse and challenging environments.

Lance understands that every patient is unique. His approach is grounded in Carl Rogers’ principle of unconditional positive regard, creating a safe, calming space where patients feel heard and valued. Lance takes time to explore developmental history, family background, and major life events, recognizing how past experiences shape present challenges. He aims to understand each symptom fully and offers thoughtful, collaborative treatment options.

Nicole Estevez is a licensed mental health counselor in New York and an out-of-state telehealth provider in Florida. She received her Master of Mental Health Counseling from Alliance Graduate School of Counseling (now Alliance University). Nicole has 9 years of experience providing client-centered individual and family therapy services to a wide variety of clients. Nicole has worked in a variety of settings including an outpatient community clinic, in-home family therapy, treating undocumented minors with trauma history, and telehealth. Nicole has experience working with clients who are experiencing anxiety, depression, bipolar disorder, borderline personality disorder, grief, post traumatic stress disorder, and other mental health concerns. Over the years in the mental health field, she believes that the best approach to therapy is a collaborative process with the client to assist in achieving their goals. Nicole has experience with modalities including cognitive behavioral therapy, psychodynamic, motivational interviewing, and dialectical behavioral therapy.

Dr. Mathews is an adult psychiatrist who works with young adults and adults struggling with anxiety and depressive disorders. She uses a compassionate, non-judgmental, and reflective approach to listening and working with clients. Dr. Mathews' practice focuses on medication management, offered in conjunction with supportive therapy in 30-minute follow-up visits. Dr. Mathews completed medical school at Stony Brook University School of Medicine where she also earned her masters in Medical Humanities, Compassionate Care, and Bioethics. She completed her adult psychiatry residency training program at Montefiore/Albert Einstein College of Medicine. The philosophy of Dr. Mathews' practice is to help promote each individual's natural capacity for healing. She ultimately strives to help clients create rich and meaningful lives while also offering mindfulness skills to empower clients to effectively cope with the pain and suffering that life can bring.

Barbara Thomas is a Licensed Marriage and Family Therapist (LMFT) with 8 years of experience in outpatient and in-home settings. She earned her Master of Science in Marriage and Family Therapy from Seton Hall University and a Bachelor of Science in Psychology from Pennsylvania State University. Licensed in Pennsylvania for 5 years and recently in North Carolina, Barbara provides trauma-focused, culturally competent care for Anxiety, Depression, Mood Disorders, Autism Spectrum Disorder, and LGBTQ+ issues.

Barbara offers systemic, client-centered, and cognitive behavioral therapy for children, adults, couples, and families. She tailors each session to individual needs, incorporating family systems and relational dynamics. She creates a safe, open environment that fosters collaboration and growth, helping patients explore new perspectives, achieve goals, and strengthen personal fulfillment.

Barbara begins with an intake session that includes a psychosocial assessment and discussion of the client’s history and goals. She develops individualized treatment plans in collaboration with patients and begins sessions with open-ended prompts to focus on client priorities. Through ongoing assessment, dialogue, and adaptable session structure, she builds trust, promotes change, and ensures each patient’s needs are met.

Dr. Arballo is board-certified psychiatrist who completed medical school at Lake Erie College of Osteopathic Medicine. He received residency training at University of Texas Health - San Antonio where in addition to clinical training was appointed resident chair of the Quality Improvement and Patient Safety Committee.

Since graduation he has been a staff psychiatrist and the military unit director at Cumberland Hall Hospital providing comprehensive care to child, adolescent, adult, and geriatric patients.

Dr. Arballo provides evidence-based medication management and psychotherapy to address mental health conditions. He is a strong advocate for patient autonomy, quality improvement and psychoeducation.