Sibi Selvarajah, LCSW

Jennifer Maguire is a Licensed Professional Counselor in New Jersey with over 25 years of experience supporting individuals through life’s most complex challenges. She holds degrees from Rutgers University, Rowan University, and the University of Phoenix.

Jennifer Maguire approach is warm, interactive, and client-centered, guided by empathy, respect, and collaboration. Jennifer draws from evidence-based practices such as CBT, DBT, Solution-Focused Therapy, and trauma-informed care. She works closely with each client to identify strengths, clarify goals, and create a personalized treatment plan that fosters healing and growth.

Jennifer Maguire supports clients in understanding how their thoughts, emotions, and behaviors connect, and teaches skills like mindfulness, distress tolerance, and emotional regulation. Jennifer believes therapy is a partnership where clients feel heard, empowered, and respected. Her goal is to help individuals move toward a life of greater peace, connection, and fulfillment.

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Maryanne Garnsey is a Licensed Marriage and Family Therapist, who has extensive experience working in multiple disciplines, modalities, and stages of life. Maryanne has worked directly with clients of various demographics, living with a variety of mental health conditions. Maryanne completed her BFA at Rutgers University in New Brunswick, New Jersey, and MS in Mentally Health Counseling and Marriage and Family Therapy from Palm Beach Atlantic University in West Palm Beach, Florida.  

Maryanne’s approach is eclectic, integrative, interdisciplinary, and holistic. This approach incorporates humanistic, family systems, lifestyle, cognitive behavioral, acceptance and commitment, mindfulness, strengths-based, and healthy attachment, as well as many other techniques into each session based on the unique needs, interests, and goals of each client. Maryanne’s love of nature, science, people, and lifelong learning creates a therapeutic environment of curiosity, care, support, guidance, and hope.

Maryanne has experience in finance, education, wellness, entertainment, hospitality, marketing, and sales working with individuals, couples, families, and groups of all ages. Maryanne is easily inspired and enjoys discovering each client’s personal story. Maryanne believes that working as a team with a common goal can foster personal growth, healing, health, and optimum wellbeing.

Donna Duggan, LMHC, earned her Bachelor of Science in Criminal Justice from the University of Massachusetts and a Master’s Degree in Clinical Counseling from Walden University. Her professional journey began in law enforcement, later leading to education and mental health advocacy. Donna’s work as a crisis advocate for survivors of sexual assault and domestic abuse inspired her to pursue counseling full time. Since earning her graduate degree in 2015, she has worked extensively with children, families, and adults, specializing in trauma recovery and empowerment.

Donna values open communication and believes in creating a warm, supportive environment where patients feel respected and understood. With over fifteen years of experience helping individuals heal from trauma, she views the therapeutic process as an opportunity for patients to reclaim their voices and move from “victim to survivor” on their own terms. Patients can expect empathy, collaboration, and a strong sense of safety in her care.

Donna begins each therapeutic relationship by establishing trust and safety, encouraging honest dialogue around personal and family challenges. She integrates education, reflection, and resource sharing on topics like communication and conflict resolution. Together with patients, she develops personalized short- and long-term goals rooted in their individual and cultural values, ensuring therapy supports meaningful and lasting growth.

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.

Paul Pennington is a Licensed Professional Counselor with over 15 years of mental health experience in a variety of settings ranging from schools, private practice, residential facilities, and crime scene crisis counseling. Paul has had the privilege of helping people with various situations including depression, anxiety, stress, anger, trauma, abuse, life transitions, relationships, integration, existential issues, and other obstacles that have caused an imbalance in their lives. Paul specializes in working with teachers, first responders, young parents, and individuals that just want to be seen as who they truly are.‍Paul earned a Bachelor of Science in Psychology with a minor in Sociology from Texas State University and a Master of Education in Guidance and Counseling from Angelo State University. A few of the certifications Paul has earned over the years are: Residential Staff from the Texas Department of Criminal Justice, Certified Anger Resolution Therapist (C.A.R.T.), AgriSafe Farm Response, Trust Based Relational Intervention (TBRI) Practitioner Trainer, Texas Education Agency: EC-12 SpEd, 4-8 Generalist, EC-12 School Counselor, SAFE EMDR, Mental Health First Aid, and Ketamine Assisted Psychotherapy.‍Paul believes everyone is different and takes an individualized approach with each client. He operates from a foundation in Cognitive Behavioral Therapy, Trust-Based Relational Intervention, Solution Focused Therapy, and Mindfulness.

Dr. TreSina E. Steger (Dr. Tre) is a licensed professional counselor (LPC) who has practiced as a mental health therapist for several years. She received a Bachelor of Science degree from Mount Olive College, in NC, a Master of Science in Psychology and Clinical Mental Health Counseling from Capella University, in MN, and a Doctorate in Education, in Higher Educational Leadership from Liberty University in VA. She has worked in business, outpatient mental health, non-profits, in private practice, and with the military. She is a National Certified Counselor (NCC), a Board Certified Tele-Mental Health Provider (BC-TMH), Certified Dialectical Behavioral Therapist (CDBT), and Certified Trauma Focused Cognitive Behavioral Therapy (C-TFCBT). Dr. Tre uses person-centered, solution-focused, DBT, CPT, CBT, motivational interviewing, mindfulness, psychodynamic, and other approaches to assist clients. She strides in aiding clients work on attachment issues, relationship problems, ADHD, self-esteem, self-worth, gender identity, boundary issues, trauma, depression, and anxiety. Dr. Tre has worked with clients from a variety of backgrounds, populations, and identities and takes pride in being a LGBTQIA+ affirming, a gender-affirming, BIOPC therapist who has worked with clients who have experienced various types of traumas. Clients will find she has a conversational tone, direct, non-judgmental approach when addressing their therapeutic goals and provides a safe space for them to do their work.