David Guggenheim, PsyD

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. Sara Mateo holds the position of staff Psychiatrist at Talkiatry. She is a board-eligible adult Psychiatrist. Dr. Mateo completed her Medical degree at the University of Benghazi- Faculty of Medicine and finished General Psychiatry Residency training at Tower Health/DrexelPhoenixville Hospital. Throughout her career, Dr. Mateo has actively contributed to various leadership roles and committees, demonstrating her commitment to advancing medical education and promoting diversity in the field. During her training, she generously shared her knowledge through educational presentations and lectures, fostering the growth of fellow trainees and medical students. Dr. Mateo is dedicated to creating a therapeutic environment characterized by warmth, empathy, and nonjudgmental support. Her approach involves collaborating with patients to develop individualized treatment plans that consider cultural, biological, psychological, and social factors. With a primary focus on medication management, Dr. Mateo's keen interest in psychotherapy is evident, as she often integrates supportive therapy, cognitive behavioral therapy, and psychodynamic psychotherapy during 30-minute follow-up visits to optimize wellness and recovery. Dr. Mateo brings a wealth of experience in caring for individuals of diverse ages and backgrounds, adeptly addressing a wide spectrum of conditions. Her expertise extends to treating depressive disorders, bipolar disorders, anxiety disorders, trauma and stress related disorders, ADHD, OCD, Insomnia, psychotic disorders; she also has experience treating individuals with medical comorbidities.

Dr. Steve Paschos is a board-certified Psychiatrist at Talkiatry. He attended Loyola University Chicago on the Lake Shore campus, completing a bachelor's degree in science and a Degree in Classical Studies. He then attended Medical School at Rush Medical College in Chicago and completed a 5-year combined Internal Medicine & Psychiatry residency in 2011. Dr. Paschos subsequently completed a 1-year fellowship in Geriatric Medicine at Rush University Medical Center. He has spent the last 12 years fulfilling his passion for integrating Internal Medicine & Psychiatry, working with a diverse range of patients suffering from severe mental illnesses. ‍Dr. Paschos' years of experience have included working at Cook County Health Services � Cermak Health Services at Cook County Department of Corrections with an extremely diverse patient population with varying psychiatric illnesses. He has also worked as an inpatient psychiatric hospitalist and as the director of the Intensive Care Unit at Chicago Behavioral Hospital in Illinois. Dr. Paschos also acted as a medical director of an IOP and established an outpatient psychiatric practice in conjunction with the Intensive Outpatient Program. He has had the opportunity and privilege of treating individuals who suffer from various diagnoses, especially challenging patients who have suffered from integrated or Med-Psych concerns involving primary mood disorders, Bipolar Affective disorders, prior trauma, severe medical problems/diagnoses along with concurrent personality pathology. ‍Dr. Paschos utilizes supportive psychotherapy, brief cognitive behavioral therapy, and at times psychodynamic therapy to address his patients' current complaints and to identify the locus of their symptoms. He believes in utilizing an all-encompassed approach using mindfulness and various psychotherapies along with comprehensive medication management. To quote Hippocrates "Where there is love for the art of medicine there is a love of humanity.”

Dr. Giselle Brito is board-certified in adult psychiatry and has been practicing for over 4 years. She received her medical degree from San Juan Bautista, School of Medicine in Puerto Rico and continued her medical education at Jackson Memorial Hospital & University of Miami Hospital for her 4-year psychiatry residency training program. After completing her training, Dr. Brito worked at the Miami Veterans Affairs Hospital and then the Orlando Veterans Affairs Hospital in the primary care mental health integrated model. Dr. Brito also holds certification in Perinatal Mental Health. Dr. Brito's practice focuses on medication management and supportive psychotherapy in typically 30-min follow up visits. At times, additional psychotherapy is needed and a therapist may be added to provide the best outcome.‍

Cheryl Jones, LICSW, LCSW, is passionate about supporting clients as they manage and overcome challenging life issues. She brings broad perspective and insight from working in a variety of clinical settings and with diverse populations. Cheryl’s experience as a licensed clinical social worker allows her to provide compassionate, thoughtful care while helping individuals navigate personal, emotional, and life transitions.

Cheryl combines warmth with clinical expertise to help clients navigate life’s challenges in a supportive, nonjudgmental environment. Her therapy approach is client-centered and integrates cognitive-behavioral therapy, motivational interviewing, solution-focused therapy, and strengths-based techniques. She tailors each treatment plan to meet the unique needs, goals, and experiences of every individual she works with.

During the first session, Cheryl focuses on getting to know each patient and understanding what brings them to therapy. She explores concerns, goals, and what clients hope to gain from treatment while creating a safe space for open conversation. Together, they build a strong foundation for therapy and continue collaborating in future sessions to turn those goals into meaningful progress.

Wendy Barajas is a Licensed Marriage and Family Therapist (LMFT) with over 15 years of experience working in community mental health outpatient settings. She earned her bachelor’s degree in Sociology from Mount St. Mary’s University in Los Angeles and her master’s degree in Marriage, Family, and Child Therapy from the University of Phoenix. Wendy works primarily with adults and couples and also enjoys supporting children and teens. As a first-generation Latina, she understands the challenges of navigating bicultural identity and generational trauma.

Wendy supports clients experiencing anxiety, depression, eating disorders, workplace or school concerns, peer challenges, and sexuality-related issues. She believes clients are the experts in their own lives and partners with them to find balance and clarity. Wendy integrates humor into sessions when appropriate and brings a firm yet friendly, honest, and down-to-earth approach. She adapts her communication style to meet each client’s needs and enjoys celebrating progress and accomplishments.

Clients can expect to feel heard and seen from the first session. Wendy focuses on building connection, understanding what led clients to prioritize their mental health, and establishing trust. Together, they identify meaningful, attainable goals. Wendy provides respectful and honest feedback while supporting steady progress, viewing therapy as a collaborative journey rather than a race.