Jennifer Yen, MD

Dr. Mullenix is a board-certified adult psychiatrist who strives to form strong therapeutic and collaborative environments with patients and values patient empowerment. Dr. Mullenix received his medical degree from the Chicago Medical School and then went on to complete his residency in psychiatry at Advocate Lutheran General Hospital. His interests and expertise are in helping patients struggling with depression, anxiety, including social/obsessive compulsive and generalized anxiety disorders, and ADHD. He provides psychiatric medication management along with supportive, cognitive behavioral therapy (CBT) and other modalities of therapeutic treatment. Dr. Mullenix's practice focuses primarily on medication management, or pharmacotherapy. He routinely incorporates supportive therapy into his 30-minute follow-up visits. Dr. Mullenix may occasionally recommend that a therapist be part of the care team to provide optimal outcomes. The philosophy of his practice is to actively involve patients in the decision-making process to improve adherence to treatment and build trusting relationships with all patients.

Dr. Tara Thompson-Felix is a board-certified child, adolescent and adult psychiatrist. Dr. Thompson-Felix has specialized training in perinatal mental health and believes that improving outcomes during pregnancy and the postpartum period has a long-lasting impact on outcomes for a mother and child. She also specializes in treating a wide array of psychiatric conditions affecting children, adolescents, and young adults. Dr. Thompson-Felix's journey into medicine started in her undergraduate studies at Rutgers University. She earned her medical degree at Rutgers, Robert Wood Johnson Medical School and trained in adult psychiatry at Temple University Medical School. She completed her child and adolescent psychiatry fellowship at Yale School of Medicine. In addition to her clinical work, Dr. Thompson-Felix has extensive research experience in using neuroscience to understand the impact of maternal mental health on child development. She has authored several publications, presents her work nationally/internationally, and received numerous awards for her clinical work, research, and passion for teaching. Dr. Thompson-Felix believes that trust, communication, and respect between a patient and their physician is the foundation of effective treatment. Her style is welcoming, nonjudgmental, and collaborative. She evaluates mental health based on biological, psychological, and cultural aspects. She uses evidence-based treatments to manage psychiatric symptoms and promote optimal health.

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. Andrew Miller is a board-certified psychiatrist with extensive experience treating patients across Indiana. He earned his undergraduate degree in Biology with a minor in Chemistry from Indiana University, followed by his Doctorate of Medicine and residency training in psychiatry. He went on to complete a fellowship in child and adolescent psychiatry and maintains active involvement in professional organizations, including serving as past president of the Indiana Council of Child and Adolescent Psychiatry. Outside of medicine, Dr. Miller values time with his wife and two children and enjoys sports, Lego building, and supporting Indiana athletics.

Dr. Miller believes in building a collaborative therapeutic relationship grounded in respect and open communication. He strives to create a safe, supportive environment where patients of all ages—children, adolescents, and adults—feel heard and understood. He works to balance medical expertise with patient preferences, encouraging shared decision-making and honoring each individual’s goals in treatment.

Dr. Miller begins with a thorough evaluation to gain a complete understanding of each patient’s history, strengths, and challenges. From there, he develops a personalized treatment plan that may include therapy, medication management, and integration of other supportive resources. He is committed to ongoing follow-up, adjusting care as needed, and helping patients move toward lasting improvement in their mental health and overall well-being.

Dr. Erlach is a board certified adult psychiatrist who has previously worked for the United States Air Force and the Department of Veterans Affairs. He attended medical school at the Uniformed Services University of Health Sciences, graduating in 2009, followed by active duty military service in the United States Air Force until 2024. He completed residency training at the combined military-civilian Wright State University/Wright Patterson AFB training program in Dayton, Ohio.

Dr. Erlach enjoys working with all types of patients. He takes a collaborative approach to patient care and develops a treatment plan alongside the patient so that both are fully invested in the plan. He generally has weekend and evening appointments only.

Dr. Erlach incorporates therapy into medication management appointments. Dr. Erlach feels that addressing psychosocial stressors and developing coping mechanisms are a vital component to treatment.

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Margaret Mary Reyes, MSN, APRN, PMHNP-BC, is a board-certified Psychiatric Mental Health Nurse Practitioner committed to delivering patient-centered and compassionate mental health care. A proud Florida native, she earned her Bachelor of Science in Nursing (BSN), Master of Science in Nursing (MSN), and post-master’s certification in Psychiatric Mental Health Nursing from Florida Atlantic University (FAU). Her academic research focused on improving outcomes for women living with Premenstrual Dysphoric Disorder (PMDD).

Margaret has advanced practice experience in both inpatient and outpatient psychiatric settings. She has treated individuals with a wide range of mental health conditions, including psychotic disorders, bipolar spectrum disorders, depressive and anxiety disorders, trauma-related disorders, attention deficit disorders, personality disorders, substance use and co-occurring disorders, eating disorders, suicidality, homelessness, and severe mental illness (SMI) within the criminal justice system. Her clinical background also includes acute care experience in oncology, medical-surgical, telemetry/cardiac step-down, intensive care, nursing research, and consultation-liaison psychiatry.

She takes an integrative and comprehensive approach to mental health care, combining medication management with evidence-based complementary and alternative interventions. Her practice is grounded in the understanding of the mind-body-spirit connection and the gut-brain axis. Margaret incorporates supportive therapy, motivational interviewing, and mindfulness-based cognitive techniques to support her patients’ overall well-being.

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