David Guggenheim, PsyD

Hayley Schiller-Giles is a Licensed Clinical Social Worker with experience practicing in both crisis response and outpatient mental health settings. She earned her bachelor’s and master’s degrees in social work from Fordham University. Hayley is certified in motivational interviewing and Dialectical Behavior Therapy, has completed Gottman Couples Counseling Level 1 training, and completed coursework in Cognitive Behavioral Therapy through the Beck Institute.

Hayley values a collaborative, client-centered approach to care. She works closely with patients to create shared goals and customized treatment plans that reflect their needs and strengths. Sessions often include practical tools and strategies, and Hayley regularly assigns “homework” to support progress between appointments.

Hayley begins treatment by developing a thorough understanding of each patient’s history, concerns, and goals during the initial session. From there, treatment is guided by a highly collaborative process in which clinician and client work together to adjust goals, strategies, and interventions over time.

Megan Mooney is a Licensed Professional Counselor (LPC) with over 10 years of experience in diverse clinical settings. She holds a Bachelor's degree in Psychology from Auburn University and a Master's degree in Community Counseling from Columbus State University. Throughout her career, Megan has worked with a wide range of demographics, providing personalized therapy that focuses on the unique needs of each client.

Believing in a holistic approach to mental health, Megan tailors her treatment to foster independence, enhance coping skills, and guide clients through lifestyle changes that promote growth and healing. She utilizes a well-rounded, integrative therapeutic modality, drawing on evidence-based practices to support clients in their journey towards emotional well-being.

Megan’s compassionate and empathetic approach allows her to connect with individuals from all walks of life, helping them navigate challenges and achieve lasting positive change.

Keesha Barthelemy is a Licensed Mental Health Counselor, and a Credentialed Alcoholism and Substance Abuse Counselor Level-2. She has extensive experience working in the mental health and addictions field with adolescents, emerging adults, adults, and families. Keesha has worked directly with clients of various demographics, living with a variety of mental health conditions. She obtained her Undergraduate degree in Psychology from Hofstra University on Long Island, NY, and her graduate degree from Mercy University in Westchester, NY. Keesha has been practicing for 3 years as a Licensed Mental Health Counselor, focusing on anxiety, mood disorders, addictions, and families. Treatment is tailored to the individual, with a foundation in cognitive-behavioral therapy, rational-emotive behavior Therapy, and mindfulness. Furthermore, Keesha has experience working with individuals seeking Faith-based Therapy, with a focus on Christianity and Catholicism. Keesha's vast clinical background has assisted in her development as a well-rounded counselor. She prides herself on possessing great interpersonal skills, and building therapeutic relationships in an effort to assist with growth, healing, and flourishment.

Carla Brown, MD, is double board certified in Adult Psychiatry and Child and Adolescent Psychiatry. She earned her medical degree from the University of Maryland School of Medicine and completed psychiatry residency and Child and Adolescent Fellowships at the NYU School of Medicine, where she also trained in child and adolescent psychodynamic psychotherapy. Dr. Brown has practiced in Level V schools, residential treatment centers, crisis clinics, partial hospital and IOP settings, and telebehavioral health since 2012. She specializes in ADHD, mood and anxiety disorders, and high-functioning autism, and has held medical director and academic roles.

Dr. Brown is passionate about caring for adults, children, and families. She believes compassionate, evidence-based, multidisciplinary care is essential to healing. Having served diverse communities from rural areas to major cities, she partners with patients in a warm, down-to-earth manner to reduce stigma and support their best interests. She views medication as one of many tools and encourages a comprehensive approach to wellness.

Dr. Brown begins with a thorough evaluation of each patient’s history, concerns, and goals. She collaborates closely to create individualized, measurable treatment plans tailored to each person’s strengths and needs, adjusting care thoughtfully to support meaningful, ongoing progress.

Dr. Dhaliwal is an integrative psychiatrist with an MPH, a 1-year fellowship through Psychiatry Redefined, as well in intensive inpatient and outpatient training. A Boston University School of Medicine graduate and former Chief Resident at FAU, she blends research-based care, emotional insight, and life optimization. She treats depression, bipolar, anxiety, ADHD, PTSD, substance use, and psychotic-spectrum disorders with a holistic, results-driven approach.

Dr. Dhaliwal works with individuals who feel stuck—functioning on the outside but "not like myself" inside. Her warm, structured, and research-driven approach combines medication when needed with integrative tools such as CBT, lifestyle changes, "24-hour approach", and a bio-psycho-social-spiritual lens. She focuses on root causes and helps individuals gain clarity, momentum, and purpose to function at their highest level across home, career, and life.

Dr. Dhaliwal begins with a 360-degree assessment exploring emotional patterns, routine, physical health, neurobiology, and values. Her 24-hour optimization model supports intentional living, clarity, and structure. She fine-tunes medications and augments with an integrative tools to enhance mood, resilience, and wellbeing. Her care is shaped by years in psychiatry and over a decade of coaching future physicians, researchers, and life coaches to reach their highest academic and career potential.

Dr. Carder has been practicing for over 20 years in general adult psychiatry. She is board certified by the American Board of Psychiatry and Neurology and has a certification in Elder Law. She has advanced training in psychopharmacology, which she earned with distinction. Dr. Carder's practice focuses on medication management. Typically, she offers this in conjunction with supportive therapy in 30-minute follow-up visits. However, occasionally Dr. Carder may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. She received her medical degree from the University of Toledo, College of Medicine and Life Sciences, where she was given the outstanding medical student award by the Department of Head and Neck Surgery. She completed her internship with the Department of Family Medicine and completed her residency with the Department of Psychiatry both at the University of Toledo, College of Medicine and Life Sciences. Throughout her career, she has been the Medical Director of two Community Mental Health Centers and is also the Corporate Medical Director for a company providing neuropsychiatric and general psychiatric care to patients residing in nursing facilities. She received her certification in Elder Law through the Mitchell Hamline School of Law. She has also been a preceptor for numerous universities and has trained advanced practice providers in psychiatry. In addition to general adult and geriatric psychiatry, Dr. Carder's areas of interest include complex psychiatric and medical conditions, neuropsychiatric issues, and treatment-resistant cases. She enjoys using her medical expertise to solve difficult cases. She has an interest in exploring combined traditional psychiatric practice with complementary and holistic approaches to treatment and believes in keeping her patients healthy rather than only addressing illness.