Maria Carvajal-Ramirez, MD

Dr. Parrish is a board-certified General Psychiatrist and board-certified Child and Adolescent Psychiatrist. In addition to medication management, Dr. Parrish also provides supportive therapy and cognitive behavioral therapy techniques during appointments. When appropriate, she will refer patients for additional psychotherapy and will work to collaborate with therapists to help patients achieve the best outcomes. She received her medical degree from the Medical College of Virginia/VCU in Richmond, Virginia. She then traveled to Greenville, South Carolina where she completed a General Psychiatry residency at Greenville Health System/PRISMA Health and then returned to Virginia to complete a Child & Adolescent Psychiatry fellowship at The Virginia Treatment Center for Children/VCU Health System. Dr. Parrish is a strong advocate of an integrated approach to treating children and their families. She completed undergraduate training at Randolph-Macon College in Ashland, Virginia, where she studied psychology and elementary education. Prior to entering medical school, she was a licensed elementary school teacher in Virginia where she served children of various learning styles and needs. She continues to have an interest in learning disabilities, other neurodevelopmental disorders, ADHD, mood disorders, as well as many other areas of psychiatry.‍

Shelah Radke, MD, JD, is a double board-certified Child and Adolescent and Adult Psychiatrist with over a decade of extensive experience in mental health care, specializing in the well-being of children, adolescents, and young adults. She currently serves in St. Louis, MO, where she is known for her dynamic leadership as a Medical Director and her robust clinical practice. Throughout her career, Dr. Radke has held pivotal roles, including Medical Director of Crisis Psychiatry Services at Mercy Hospital and key positions in several reputable outpatient clinics across the U.S. Her clinical acumen spans a diverse range of settings, from private practice and crisis care to specialized programs in residential and educational institutions.

A staunch advocate for evidence-based approaches, Dr. Radke integrates lifestyle and pharmacological interventions to foster mental health resilience among her patients. She is particularly passionate about the shared decision-making model, which enhances patient empowerment and satisfaction by actively involving them in their treatment plans. Dr. Radke's academic contributions are equally notable. She has developed educational curriculums that significantly improve health outcomes and has shared her expertise through numerous media appearances and professional talks. Her commitment to medical education is reflected in her mentorship of nurse practitioners and her involvement in creating community psychiatry programs.

Complementing her medical expertise, Dr. Radke holds a Juris Doctorate, with a focus on public health and social policy, which enriches her understanding of the legal and systemic aspects of healthcare. Her approach is deeply holistic, informed by her training in integrative medicine and her personal commitment to wellness, which she practices through nutrition, exercise, and travel with her family. Dr. Radke's professional journey is driven by a commitment to optimizing mental health outcomes and enhancing the quality of life for her patients and their families.

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Dr. Nathan Schulz attended the Ohio State University College of Medicine where he received his degree before completing a residency in psychiatry at the University of Illinois, Chicago. After several years working with veterans at the Jesse Brown VA in Chicago, he returned to his home state of Iowa in 2022. Since then, he has continued to work with a wide variety of clients and conditions in both inpatient and outpatient settings, including at the University of Iowa and Clive Behavioral Health hospital.

Dr. Schulz values open, honest, and ongoing dialogue about how mental health treatment can improve wellbeing and lead to healing. Over time, he tailors treatment recommendations based on individual needs, which may include medication, therapy, lifestyle changes, or other approaches. He avoids a one-size-fits-all model and creates an environment where patients feel respected, understood, and supported as unique individuals.

In the first meeting, Dr. Schulz works to understand each patient’s goals, experiences, and preferences. Some arrive knowing what they want, while others are new to exploring mental health challenges. His goal is to meet patients where they are and adjust treatment focus as needs evolve. He emphasizes collaborative decision-making, clearly discussing treatment options, pros and cons, and next steps, while ensuring patients feel informed and empowered throughout care.

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. Khandie Graham is a board-certified psychiatrist who completed her medical training at UCLA/Drew Medical Education and her psychiatry training at University of California, San Francisco/Fresno in 2013. She has served as a psychiatrist in the United States Air Force and prior to joining Talkiatry, was an inpatient psychiatrist. Dr. Graham's practice focuses on medication management. Typically, she offers this in conjunction with supportive therapy in 30-minute follow-up visits. However, occasionally Dr. Graham may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. Dr. Graham treats all adults and specializes in depression, bipolar disorder, anxiety disorders, ADHD, and life changes. She prides herself in partnering with patients to create individualized treatment plans. Dr. Graham is a great listener and spends time with her patients.

Dr. Patel is a distinguished psychiatrist with over 24 years of experience. He completed his psychiatric residency at the University of South Dakota School of Medicine, where he served as chief resident and earned the Outstanding Resident of the Year award. He then pursued a fellowship in Consultation-Liaison Psychiatry at Harvard Medical School/Beth Israel Deaconess Medical Center.

He is triple Board certified in Adult Psychiatry, Consultation-Liaison Psychiatry, and Sleep Medicine and also holds certification in Behavioral Neurology and Neuropsychiatry from the United Council for Neurological Subspecialties. These credentials reflect his expertise in psychiatry, neurology, and the management of complex psychiatric conditions in medically ill patients.

Dr. Patel has worked in diverse settings including inpatient units, psychiatric consult services, outpatient clinics, and nursing homes. He is skilled in neuromodulation treatments such as Electroconvulsive Therapy (ECT) and Transcranial Magnetic Stimulation (TMS).

In addition to clinical practice, he has served leadership roles of chairman of a psychiatric department, medical director of a behavioral health service line in a regional health system, and founder/CEO of a private psychiatric and TMS clinic. Dedicated to ongoing professional growth, Dr. Patel remains at the forefront of psychiatric advancements in psychiatric care, earning a reputation as a respected leader in the field.

Dr. Patel combines deep knowledge of neurobiology, behavioral health, and the mind-body connection to offer a collaborative, evidence-based, and holistic approach to care. He integrates diet, exercise, yoga, meditation, and lifestyle modifications with psychotherapy and medication management.

His approach emphasizes active listening, curiosity, compassion, and even humor—creating a warm and supportive environment. By encouraging patients to integrate their unique life experiences into their treatment, he fosters ownership, empowerment, and active participation in the healing process.

During your first visit, Dr. Patel will review your symptoms, medical and psychiatric history, past treatments, substance use, psychosocial factors, and family history. He will discuss treatment options—including risks and benefits—and determine if his expertise and the telehealth platform are the right fit for your needs. Your safety is his top priority.

Follow-up visits focus on monitoring progress, adjusting treatments, maintaining stability, and supporting your motivation to achieve your fullest potential.