Susana Deltoro, LPC

Lily Mudry is a Licensed Mental Health Counselor Supervisor, a Certified Clinical Supervisor with the Substance Abuse Board, a Licensed Clinical Addictions Specialist, a Master in Addictions Counselor, and a National Certified Counselor. Lily specializes in mental health practice and addictions counseling, with a particular focus on trauma-informed care. She offers individual, couples, and family counseling, utilizing a variety of evidence-based treatment interventions, including Cognitive Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT), and Motivational Interviewing.

Lily has extensive training in trauma-related therapies, including Eye Movement Desensitization Reprocessing (EMDR), Polyvagal Theory, Emotional Freedom Technique, Brain Spotting and Mindfulness-Based Strategies. She believes in a holistic approach to therapy, recognizing the importance of understanding the brain and the autonomic nervous system, as well as the role of symptom management and prevention. Lily’s therapeutic philosophy emphasizes body awareness and the cyclical patterns of thoughts and emotions that influence overall well-being. Her focus is not only on healing and stability but also on inspiring and empowering clients to continue growing and evolving into their true authentic selves.

Lily’s approach integrates trauma-focused therapy, CBT, Solution-Focused Therapy, Reality Therapy, Motivational Interviewing, and EMDR to help clients make meaningful progress in their therapeutic journey. She works primarily with clients experiencing depression, anxiety, substance use disorders, and trauma-related issues. Lily strongly believes in empowering clients through psychoeducation, self-advocacy, and collaboration, ensuring that therapy is driven by motivation, direction, and progress.

Her first sessions with clients are focused on establishing a safe and comfortable environment, building rapport, and understanding each client’s challenges and goals. By creating a space for open communication, Lily works alongside clients to identify their needs and develop a personalized approach to therapy.

Maria-Anne Duncan, LCSW-R holds the position of psychotherapist at Talkiatry. She has over twenty years of experience working with individuals, families, and groups addressing symptoms of anxiety, depression, and trauma. Before joining Talkiarty, Ms. Duncan worked as a Director of Clinical Services for a not-for-profit in the Hudson Valley Region of New York State. Prior to that, Ms. Duncan worked for a local hospital in the psychiatric department providing treatment to the Inpatient and Outpatient units. She has held several positions as a clinician and program director. Additionally, Ms. Duncan has taught parenting classes, Mental Health First Aid and provides training on Trauma-Informed Care. Ms. Duncan started her career as a clinician in a Crime Victims' Assistance Program funded by New York State. Through this experience she began to explore the effects of trauma on individuals, their families, and the community. Ms. Duncan has been trained in both EMDR (Eye-Movement Desensitization and Reprocessing) and SE (Somatic Experiencing). She utilizes these body-focused therapies to help her clients be released from years of painful energies locked in their systems. Ms. Duncan received her Bachelor's Degree from Marist College and her Master's from Fordham University. She has been trained to supervise Social Work Students in their field placements. Ms. Duncan appeared in the Vassar College student-developed training video, "He said, She said" which is used to train peer sexual assault counselors. In April of 2022, she became a trainer for LivingWorks "SafeTALK" program. Additionally, Ms. Duncan has a trained therapy dog, Monkey, who goes with her to local hospitals and nursing homes to provide comfort and affection.

Kacey Peterson is a Licensed Mental Health Counselor with Diagnostic Privilege in New York and Florida, where she also serves as a Telehealth Provider. She is a Nationally Certified Counselor and earned her Bachelor’s degree in Psychology and Sociology from Florida Atlantic University before completing her Master’s in Clinical Mental Health Counseling at Long Island University.

Kacey has experience supporting individuals in residential, crisis, and outpatient settings, helping those managing anxiety, depression, PTSD, low self-esteem, adjustment issues, and relational challenges. She draws on Cognitive Behavioral, Person-Centered, and Trauma-Informed approaches to ensure care is tailored to each individual’s unique needs and goals.

Kacey’s process centers on creating a safe, supportive, and healing environment where collaboration is key. She works alongside individuals to navigate emotions, explore strengths, and focus on personal goals. With compassion and guidance, Kacey helps her patients uncover resilience, foster growth, and move toward lasting healing and meaningful change.

Sarah Flatin is a licensed clinical social worker in Massachusetts and Pennsylvania. She received her Master of Social Work degree from Simmons University. Sarah has over three years of experience providing client-centered individual and family therapy services to a wide variety of clients. Sarah has worked in a variety of settings including community mental health, an outpatient clinic, and in-home therapy services. Sarah has experience working with clients who are experiencing anxiety, depression, Attention-Deficit Hyperactivity Disorder, Autism Spectrum Disorder, grief, family and relationship issues, Post Traumatic Stress Disorder, and other mental health concerns. As a clinical social worker, she believes that the best approach to therapy is a collaborative process with the client to achieve their goals. Sarah has experience with modalities including psychodynamic, tri-phasic trauma therapy, cognitive behavioral therapy, and motivational interviewing.

Dr. David Guggenheim is an experienced clinical psychologist and health care administrator. He has worked with patients at different stages of life, including children, adolescents, and adults, and he has treated patients living with a wide range of mental health conditions, including anxiety, depression, post-traumatic stress disorder (PTSD), substance use, and attention-deficit hyperactivity disorder. Dr. Guggenheim has specific training in Trauma-Focused Cognitive Behavioral Therapy, Motivational Interviewing, and foundational training in dialectical behavioral therapy. Prior to joining Talkiatry, Dr. Guggenheim served as the Chief Behavioral Health Officer at Callen-Lorde Community Health Center in New York City, specializing in LGBTQ+ health care. In that role, he oversaw teams of providers including psychiatrists, psychologists, and social workers, who collectively provided care to thousands of patients in the New York metropolitan area. While at Callen-Lorde, he also served as co-chair for the behavioral health subcommittee of the Community Health Center Association of New York State; worked as an Adjunct Professor at Post University; and performed volunteer clinical work at the Weill Cornell Center for Human Rights. Before joining Callen-Lorde, Dr. Guggenheim worked as Associate Chief Behavioral Health Officer at Community Health Center, Inc., a federally qualified health center in Connecticut. A recognized expert, Dr. Guggenheim has delivered lectures to audiences ranging from medical schools to corporate executives, and he has been quoted in national media including The Advocate, Yahoo Finance, and Teen Vogue. Dr. Guggenheim has also been honored with an Early Career Achievement Award from the American Psychological Association in 2016. Dr. Guggenheim received his Bachelor of Arts from the University of Connecticut in 2002 and his Doctor of Psychology in Clinical Psychology from the American School of Professional Psychology at Argosy University/Washington, DC in 2009.

Dr. Kimberly Williams is a Licensed Clinical Mental Health Counselor, with more than 17 years of experience in the mental health field. She holds a master's degree in mental health counseling and a doctoral degree in mental health supervision and education. Her professional experience includes working with populations of diverse demographics, varying circumstances, an array of mental health conditions and challenges, and many other unique living experiences of individuals, families, and couples. Dr. Williams has worked extensively with many presenting issues including diagnoses related to mood disorders, bipolar disorders, anxiety disorders, psychoses, spectrum disorders, trauma and other challenging life changes. In order to provide culturally informed care and meet clients where they are, Dr. Williams has worked with people in many environments, including but not limited to personal homes or shelters, community settings, medical facilities, outpatient settings, and inpatient settings. Dr. Williams embraces humanistic and psychodynamic approaches to help clients acclimate to the counseling space and find the courage to explore, integrate and nurture one's true self throughout the counseling process. Additionally, Dr. Williams utilizes elements of Cognitive and Behavioral Therapies, Solution Focused Brief Therapy, and Systemic and Multicultural Therapies, to help clients further their growth and achieve success toward therapeutic goals.