Sumbal Akhter, DO

Anita Rosenberg is a Licensed Professional Counselor (LPC), with over 15 years of experience as a therapist. She graduated from Arcadia University in 2007 with a Bachelor of Arts in Psychology and received a Master of Arts in Clinical Counseling Psychology from La Salle University in 2010. Following the completion of her education, Anita spent a decade providing direct patient care and clinical leadership in an inpatient co-occurring disorders treatment facility. She continues to have a passion for working with those navigating struggles with substance use and recovery efforts through the use of person-centered and strengths-based modalities, as well as incorporating 12 step programming. Anita provides care to both adolescents and adults using an eclectic approach based in Cognitive Behavioral Therapy (CBT) and trauma informed care approaches to assist with challenging negative thoughts and beliefs that interfere with experiencing joy in daily life. This allows her to create a safe and comforting environment to serve diverse populations, including individuals within the LGBTQIA+ community. She is also well versed in assisting individuals struggling with depression, anxiety, ADHD, PTSD, grief and loss, eating disorders, chronic mental and or physical health issues, and unexpected life changes. Through treatment, Anita works along with the individual to explore personal thoughts, beliefs, and values that influence one's reactions to their lived experiences. Her approach allows for the exploration and building of healthy coping skills, positive thought replacements, and processing of past and current life events that lead to struggles with daily distress. Through her warmth, compassion, and strong sense of empathy, she strives to provide her clients with an open, positive, and affirming therapeutic relationship.

Nakia is a Licensed Professional Counselor Supervisor and Certified Sex Therapist with a Master of Education in Counseling and Development from Sam Houston State University. With extensive experience in education and private practice, she has helped individuals and couples navigate life's challenges and create meaningful change. Her expertise includes issues related to sexual health, intimacy, relationships, depression, anxiety, self-esteem, life transitions, and grief and loss. Specializing in working with individuals and couples, Nakia creates a warm and supportive environment where others feel heard and empowered. She guides them in making choices to change hindering situations and gain clarity through clinical tools to interpret and respond differently to life's challenges. Her approach is collaborative and tailored, ensuring therapy meets the unique needs of each person while celebrating progress. Nakia uses a holistic approach that integrates Cognitive Behavioral Therapy (CBT), Solution-Focused Therapy, and Person-Centered Therapy. She is also trained in Gottman Levels 1 and 2, providing evidence-based techniques to strengthen relationships and improve intimacy and communication. She believes change happens when individuals are honest with themselves and willing to do the work. As Carl Rogers said, "One must accept themselves as they are before change can occur.” Nakia considers it a privilege to support others as they heal, grow, and embrace life's possibilities.

Wayne R. McIntosh, PMHNP-BC, is a dedicated mental health professional with over a decade of experience in psychiatric care. He earned his advanced nursing degree with distinction from Arizona State University and also holds a Bachelor of Science in Nursing from Grand Canyon University and an Associate of Science in Nursing from Harry S. Truman College. He has been a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) since 2015.

Wayne specializes in family-centered care, working with individuals aged 18 to 65. Whether supporting patients through anxiety, depression, ADHD, or life transitions, he develops personalized diagnostic and treatment plans that may include therapy, coping strategies, and, when appropriate, medication. His approach emphasizes clear communication and collaboration, empowering patients to understand their challenges, apply practical tools, and achieve lasting change.

Throughout his career, Wayne has served as a Psychiatric Nurse Practitioner and Associate Director of Medical Services, leading multidisciplinary teams and promoting accessible, high-quality care. As a Faculty Associate at Arizona State University, he has mentored future nurse leaders, focusing on clinical excellence and patient advocacy. His military background and volunteer work further reflect his commitment to serving diverse populations with compassion and respect.

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Tiffany Chaille is a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP) with nearly a decade of clinical practice and over 15 years of experience working in behavioral health. Her background includes inpatient and outpatient psychiatry, crisis-focused care, community mental health, integrated pain and psychiatry care, and telepsychiatry. She has a growing interest in functional and integrative approaches to mental health. Tiffany earned her Master of Science in Nursing as a PMHNP from Indiana University and her Bachelor of Science in Nursing from Indiana State University.

Tiffany believes mental health care is most effective when patients feel comfortable, supported, and truly heard. She takes a calm, compassionate, and nonjudgmental approach, meeting patients where they are. Her care focuses on practical, real-life treatment plans while considering sleep, stress, medical factors, and lifestyle influences. She values collaboration and aims for patients to feel informed, involved, safe, and confident throughout their care.

Tiffany begins by getting to know the person beyond the symptoms and understanding what brought them to care. She works collaboratively to develop individualized, realistic treatment plans using evidence-based medication management. Ongoing follow-up, thoughtful adjustments, clear communication, and a whole-person approach guide her work, with an emphasis on consistency and long-term support.

Rebecca Siwanowicz is a Licensed Clinical Social Worker who began her career in 2013, maintaining various positions in both inpatient and outpatient settings while treating substance use and mental health disorders. Rebecca graduated with her BSW from Florida Atlantic University in 2013 and graduated with her MSW in 2016. Rebecca is trained in Accelerated Resolution Therapy and is a Master's Level Certified Addiction Professional in the state of Florida.‍Rebecca's areas of expertise are trauma, anxiety and depressive disorders, issues related to codependency and low self-esteem, life transitions, self-care and emotion regulation. Rebecca takes an individualistic approach when treating clients, greatly valuing and promoting individuality and autonomy. Rebecca practices through the lens of Family Systems Theory and Attachment Theory, utilizing components of Existentialism, Strength Based Therapy, Dialectical Behavior Therapy, 12 Step Principles, and Client Centered Therapy. Rebecca takes a psychosocial approach toward treatment, providing her clients with unconditional positive regard, psychoeducation, and practical coping skills to support them in building a life of their choosing.

Dr. Michelle Hornbaker-Park is a board-certified General and Child and Adolescent Psychiatrist with over nine years of experience. Her practice focuses on medication management, which is founded not only on evidence-based medicine but also on the understanding that a trusting therapeutic relationship is the cornerstone of behavioral health healing. She incorporates CBT, supportive therapy, and psychoeducation into her medication management appointments and may refer patients for additional psychotherapy to improve outcomes. Dr. Hornbaker-Park received her Bachelor of Science degree from Ursinus College, with a dual major in Biochemistry/Molecular Biology and Neuroscience. After receiving a Health Professions Scholarship from the Army, she obtained her medical degree from Jefferson Medical College. She went on to enter active duty military service and complete General Psychiatry residency training and Child and Adolescent Psychiatry fellowship training at Tripler Army Medical Center before completing active duty service as a staff psychiatrist and 101st Airborne Division psychiatrist at Fort Campbell, KY. There she cared for active duty service members and their families to manage depression, anxiety, trauma, and the unique stressors of military service. She later transitioned to federal civilian service and served as a preceptor for Phase II Physician Assistant trainees and Army Social Work interns, reinforcing a passion for education that carried her to Walter Reed National Military Medical Center (WRNMMC). During her time at WRNMMC, she served in several roles including Deputy Medical Director of Inpatient Psychiatry, core faculty for the National Capital Consortium Psychiatry Residency Program, Associate Program Director, and associate faculty at the Uniform Services University for Health Sciences (USUHS). Prior to transitioning out of federal service to join Talkiatry, she was repeatedly recognized for excellence in academics and mentorship and received multiple teaching awards. This zeal for education and mentorship, as well as humility, personal growth, and learning, translates directly into her philosophy for patient care. She believes a whole-person approach with open, collaborative teamwork is the key to progress.