Neha Goel, MD

Dr. Benita Dieperink, MD, is board-certified in psychiatry by the American Board of Psychiatry and Neurology. She earned her medical degree from the University of Minnesota Medical School and completed residency at the University of Colorado Health Sciences Center. She has extensive experience in private practice, academic leadership, and faculty roles, with expertise in treating diverse adult populations. She specializes in perinatal and reproductive psychiatry, supporting patients through pregnancy, postpartum, PMS, infertility, and perimenopause/menopause, as well as mood, anxiety, trauma-related, and obsessive-compulsive disorders.

Dr. Dieperink values open communication and a collaborative approach, creating a warm, supportive environment where patients feel heard and respected. She integrates psychopharmacology and psychotherapy to help patients work toward clear treatment goals, while fostering a growth- and strengths-based perspective. She also draws on a wide range of interests—from medical science to psychology and history—to enrich patient education.

Dr. Dieperink begins by thoroughly understanding each patient’s history, concerns, and goals. She develops individualized treatment plans aligned with these goals and regularly reassesses progress to refine strategies as needed, ensuring care is responsive, personalized, and effective.

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.

Cassandra Thomas-Jingles is a dedicated, board-certified Psychiatric Nurse Practitioner with dual certification as a Family Nurse Practitioner. She is deeply passionate about helping others and takes a holistic, evidence-based approach to mental healthcare, empowering patients to live life to their fullest potential.

Her practice focuses on medication management and supportive therapy, offering 30-minute follow-up sessions. When additional therapy is needed, she recommends including a therapist in the care team to ensure the best possible outcomes. With extensive experience in both outpatient and inpatient settings, Cassandra has worked with adults and children facing a wide range of mental health conditions, including ADHD, anxiety, depression, and psychotic disorders. She strongly believes in prioritizing client involvement and fostering interprofessional collaboration.

Your mental health journey is unique, and Cassandra is here to listen with compassion and without judgment. All conversations are confidential, and her goal is to create a safe, welcoming space where you feel comfortable sharing your thoughts and concerns.

During your initial appointment, Cassandra will review your mental health history, current symptoms, lifestyle factors, and any previous treatments to gain a comprehensive understanding of your needs. Together, you will develop a personalized treatment plan that may include therapy, medication, or other supportive strategies. She values shared decision-making, ensuring your input is considered at every step of the process.

If medication is part of your treatment, Cassandra will clearly explain its benefits, potential side effects, and how your progress will be monitored. Adjustments can be made as needed to achieve the best possible outcome.

Healing takes time, and Cassandra is committed to supporting you throughout the process. Follow-up appointments are essential for tracking progress, making necessary adjustments, and ensuring you receive the care you need.

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Margaret Ngumi, MSN, APRN, FNP-C, PMHNP-BC, is a dual board-certified Psychiatric Mental Health and Family Nurse Practitioner with over 20 years of experience in healthcare. She began her career as a Family Nurse Practitioner and later pursued a post-master’s certification in psychiatry to address the growing need for accessible mental health services. Margaret has extensive experience in both inpatient and outpatient settings, treating conditions such as depression, anxiety, PTSD, mood disorders, and substance use disorders.

She takes a collaborative, patient-centered approach to care, creating a safe and supportive environment where individuals feel heard and empowered. With a strong emphasis on holistic care, Margaret considers all aspects of a patient’s well-being—including lifestyle, relationships, and overall health. Whether through medication management, therapy, or lifestyle modifications, she is committed to helping patients achieve meaningful and lasting improvements in their mental health.

Margaret begins with a comprehensive psychiatric evaluation to understand each patient’s history, concerns, and goals. She then works closely with them to develop a personalized care plan that may include medication, therapy, and evidence-based lifestyle interventions. She prioritizes open communication, patient education, and ongoing collaboration to ensure treatment remains effective and evolves with each patient’s needs. Through her compassionate and evidence-based approach, Margaret is dedicated to helping individuals find balance and improve their overall quality of life.

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Dr. Stephanie Negrey is a board certified psychiatrist. She completed her undergraduate degree in Biology and History at Fordham University in the Bronx and then attended medical school at the Renaissance School of Medicine at Stony Brook University. She completed her residency at Wright State University in Dayton, Ohio as a member of the United States Air Force. Dr. Negrey served as an active duty psychiatrist; her duties included medical director of the mental health clinic at a special operations base as well as a program manager for the Air Force substance use program.

Dr. Negrey has experience treating a wide range of ages and diagnoses, with particular emphasis on personality disorders, depression, anxiety, and post traumatic stress disorder. She integrates supportive and psychodynamic therapies into her medication management appointments with a goal of achieving improvement through a holistic approach. Dr. Negrey will work with patients to reach their goals for their mental health care while also providing a compassionate and collaborative environment.

Sonya R. Isler, PMHNP-BC, began her nursing journey over 30 years ago in a state psychiatric hospital in Goldsboro, NC, inspired by the poised nurse she admired at church as a child. Her path includes roles as LPN, RN, BSN, and multiple advanced practice degrees. Sonya has worked in inpatient and outpatient settings, VA clinics, and private practices. She also serves as a preceptor for PMHNP students at her alma mater, the University of North Carolina at Chapel Hill.

Sonya creates a welcoming, respectful space where patients feel safe to communicate openly. She practices active listening and values patient input when setting therapy goals. Her approach is holistic—treating the whole person—and she encourages collaboration, helping patients feel seen, heard, and empowered in their care.

Sonya reviews a patient's history before each session and begins with clear introductions and goal setting. She invites open discussion of concerns and tailors' treatment plans with patient input. She often incorporates CBT, motivational interviewing, and solution-focused therapy into care, promoting growth through supportive, personalized strategies.