Ruben Mendez, MD

Karen Tonner, MSN, PMHNP-BC is an ANCC board-certified Psychiatric Mental Health Nurse Practitioner with over eight years of experience providing psychiatric care in outpatient and community mental health settings. She works with patients across the lifespan and treats a broad range of mental health conditions, including depression, anxiety disorders, attention-deficit/hyperactivity disorder (ADHD), obsessive-compulsive disorder (OCD), and post-traumatic stress disorder (PTSD).

Karen primarily provides medication management in conjunction with supportive therapy, using evidence-based practices to help patients achieve symptom relief and improved functioning. Her approach to care is holistic, person-centered, and collaborative, emphasizing shared decision-making and individualized treatment planning. She strives to create a welcoming, approachable, and supportive environment where patients feel comfortable being themselves and actively participating in their care. She believes that understanding each patient’s unique experiences, goals, lifestyle, and strengths is essential to effective mental health treatment.

Karen earned her Bachelor of Science in Nursing from Kennesaw State University and her Master of Science in Nursing from the University of Alabama at Birmingham. She is dedicated to continuing education to remain current with psychiatric research and is committed to delivering compassionate, high-quality care that helps patients feel heard, respected, and empowered.

Dr. Shalin Shah earned his undergraduate degree from Northwestern University, his medical degree from Texas A&M University College of Medicine, and completed psychiatry residency at the University of Colorado Anschutz School of Medicine. He is ABPN certified in Psychiatry and completed a rigorous 3-year psychotherapy scholars track, gaining experience across multiple therapeutic modalities. During residency, he served as outpatient chief resident and was recognized with a selective service excellence and leadership award. Before medical school, he worked as a project manager for a large electronic health corporation.

Dr. Shah believes trust is the foundation of meaningful treatment. He aims to create a space where patients feel seen and supported yet thoughtfully challenged, using genuine curiosity, warm humor, humility, and a direct style. He collaborates with each patient to develop holistic, realistic treatment plans that may or may not include medication. His therapeutic work blends psychodynamic and humanistic approaches, with availability for a limited number of weekly psychotherapy patients.

In the first appointment, Dr. Shah explores each patient’s life story, asking detailed questions to understand them as a whole person. He then focuses on their immediate concerns and works collaboratively over time to refine a treatment plan that balances symptom relief with deeper, long-term healing. He thinks integrative and holistically, considering medical and mental health history, lifestyle, self-narrative, psychological structure, cultural and spiritual background, and broader societal influences.

Dr. Molly Fels is a board-certified psychiatrist. She completed her undergraduate education at Barnard College followed by medical school at Rutgers-Robert Wood Johnson Medical School. Dr Fels then completed her psychiatry residency training at Mount Sinai Beth Israel. She has previously worked in the Mount Sinai health system in the psychiatric emergency department and inpatient psychiatric unit. Dr. Fels has an interest in treating patients with a wide variety of psychiatric disorders including depression, anxiety, ADHD, and in working with patients who have experienced trauma. She believes in addressing holistic and lifestyle factors with her patients, including nutrition and sleep, in addition to pharmacology. Dr. Fels combines medication management and supportive psychotherapy to provide well-rounded and comprehensive care to her patients and prioritizes involving patients actively in each step of their psychiatric treatment.

Dr. Hong Chen is a board certified adult psychiatrist and has been in practice since 2010. Dr. Chen received her doctorate degree in medicine at the University of Florida. She then completed her residency training at the University of Florida, Department of Psychiatry. She is board certified by the American Board of Psychiatry and Neurology.

Dr. Chen has worked mainly in outpatient settings and often tailors individualized treatment to serve the needs of patients with a variety of conditions. She has a lot of experience in treating patients with depression, anxiety disorders, OCD, Bipolar type 2 and ADHD.

Dr. Chen’s practice is based on a holistic approach to mental health care; with special emphasis on self-care, mindfulness practices in addition to medication treatment. Dr. Chen

truly believes that focusing on wellness in conjunction with medication mediated symptom reduction will lead to a better outcome for patients. As a result, patients often enjoy the

supportive therapy, insight-oriented therapy and psychoeducation that is provided to them during their sessions with Dr. Chen.

Dr. Anthony Miles Morris is an ABPN board-certified psychiatrist and attending physician. He completed his MD at the University of Oklahoma College of Medicine and psychiatry residency at OUHSC, serving as Chief Resident during his PGY-III and PGY-IV years. Dr. Morris provided psychiatric care for veterans at the Oklahoma City VA Medical Center, supervising and educating residents, training psychiatric nurse practitioners, and managing outpatient, inpatient, consult, liaison, and primary care mental health integration settings.

Dr. Morris is dedicated, empathetic, and professional, prioritizing a collaborative approach to mental health care. He treats patients as individuals, actively listening to their concerns, and works with them to create safe, effective, and personalized treatment plans. Patients can expect a supportive, non-judgmental environment where their goals and concerns are respected.

Dr. Morris begins with a detailed history to guide psychiatric medication management and psychotherapy. He considers genetics, environment, life experiences, and biopsychosocial factors in developing individualized treatment plans. Patients work collaboratively with him to optimize mental health outcomes, while receiving continuous education to understand and actively participate in their care.

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Dr. Williams-Jules is an adult psychiatrist who focuses primarily on medication management in conjunction with supportive therapy. She completed her undergraduate training at Spelman College in Atlanta, GA, followed by her master's in public health degree at New York Medical College. She has completed medical school at American University of Antigua and finished her residency in psychiatry at the University of Texas Southwestern. Dr. Williams-Jules has a passion for treating adults with mental health disorders, especially within the perinatal population. She has a genuine interest in management of trauma, while also treating a vast array of disorders including depression, anxiety, bipolar disorder and posttraumatic stress disorder. She has worked with clients of varying cultures and demographics, and has experience with treating patients with medical comorbidities. Dr. Williams-Jules takes a delicate approach to diagnosis and management and believes in holistic care, which incorporates mindfulness and deep breathing techniques to address the mind and body connection. She tailors individualized treatment to address the specific needs of patients. Dr. Williams-Jules is a member of the American Psychiatric Association and the Dallas County Medical Society. She has presented her research at the Annual APA conference and is co-author of many published psychiatric papers.