Gregory Miller, DO

Dr. De Paz received his medical degree from the University of Texas Medical Branch in Galveston, TX, and has been practicing for 9 years. He completed his psychiatric residency and child and adolescent psychiatry fellowship training at the University of Texas Medical Branch. After completing training, he worked at the Center for Health Care Services in San Antonio, TX. He worked with special needs children and adults who required the highest level of care both behaviorally and medically. He then continued his treatment of children and young adults at CommuniCare Health Center also in San Antonio. He served as Director of Behavioral Health for CommuniCare for 4 years. Dr. De Paz completed his undergraduate studies in Psychology and Biology at the University of Houston in Houston, TX. While having treated a wide variety of patients, his primary clinical focus has been the treatment of ADHD in children and adults, and working with special needs children and adults who may have Autism Spectrum Disorder or other Intellectual or Developmental Disabilities. Dr. De Paz's practice focuses on medication management. He offers medication management evaluations and follow-up visits. If the need arises, he works with licensed therapists to provide behavioral support.

Background and credentials

Dr. Puja Kumar is trained in adult, child, and adolescent psychiatry and is a board-certified pediatrician. She earned her Bachelor of Science from the University of Calgary and her medical degree from St. George’s University in Grenada. She completed her pediatrics residency at Maimonides Medical Center in New York and practiced pediatrics with MedStar Shah Medical Group in Maryland before transitioning to psychiatry. She later trained in child and adult psychiatry at University Hospitals Cleveland Medical Center.

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Treatment approach

Dr. Kumar provides medication management combined with supportive therapy, typically in 30-minute follow-up visits. She takes a holistic approach to treatment, considering the impact of lifestyle, parenting practices, and family dynamics on mental health. She emphasizes integrative care, ensuring that treatment plans are tailored to each patient’s unique needs and circumstances.

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What you can expect in a first visit

During the first visit, patients can expect a thorough and compassionate evaluation, where Dr. Kumar takes time to understand their symptoms, medical history, and environmental influences. She prioritizes collaborative decision-making, working closely with patients and, when applicable, their families, to develop a comprehensive and personalized treatment plan. Follow-up visits typically focus on medication adjustments, supportive therapy, and lifestyle recommendations to optimize mental health outcomes.

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Why Talkiatry?

We’re a virtual mental health practice that makes it easy to find great care. We combine quality and convenience to help you thrive—faster. Our providers, like this one, are highly trained experts who specialize in medication management and collaborate with you on a treatment plan that fits your needs and comfort level.

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Dr. Stephen Hawk is a board-certified psychiatrist with 25 years of experience. He earned his Doctor of Osteopathic Medicine from Kansas City University of Medicine and Biosciences and completed his psychiatry residency at the University of South Florida, Tampa. He has served in private practice and held leadership roles at the Veterans Administration, including Chief of Mental Health at Bay Pines VA. He led the launch of the VA Suicide Prevention 2.0 Telehealth Program and has training in AI in medicine.

Dr. Hawk combines talking therapies, neuromodulation, and modern psychopharmacology in a collaborative and empathic style. He focuses on family dynamics and integrates psychodynamic and biopsychosocial approaches, using creativity and open dialogue to tailor care.

He begins with open-ended conversations to help patients tell their story, then develops treatment plans together aligned with diagnostic standards. His approach includes medication review, mindfulness, CBT, supportive and psychodynamic therapy, and lifestyle education to support holistic wellness.

Dr. Kyle Baird, DO, earned his medical degree from A.T. Still University – Kirksville College of Osteopathic Medicine and completed his psychiatry residency at the University of Colorado School of Medicine. He has practiced in diverse academic outpatient settings, using a multidisciplinary approach to understand clients and develop personalized treatment plans. He also served as medical director of a large academic outpatient clinic, overseeing psychiatrists, residents, psychology students, and advanced practitioners.

Dr. Baird values a holistic perspective in care, emphasizing empathy, understanding, and patient-centered treatment. He fosters open, clear communication and collaborates with clients to explore the causes of symptoms, as well as the strengths and behaviors that support resiliency and well-being. He also considers daily routines and life contexts that influence mental health.

During the initial appointment, Dr. Baird conducts a thorough evaluation of concerns, history, and functioning, completing any necessary screenings. He then develops a personalized treatment plan collaboratively, reviewing potential therapeutic interventions. Follow-up visits typically combine medication management, if appropriate, with brief psychotherapeutic support, adjusting intervals based on client needs, monitoring, and treatment progress.

Dr. Nelson is a board-certified psychiatrist who attended the University of Iowa Medical School and completed her psychiatry residency and child and adolescent psychiatry fellowship at Walter Reed National Military Medical Center.  She has extensive experience treating active-duty service members, family members of active duty and the veteran population.  She feels comfortable working with a wide range of age groups and enjoys treating challenges with anxiety, mood, sleep, and concentration.

Dr. Nelson believes that the key to success in mental health care is being able to establish a trusting and open relationship between psychiatrist and patient.

While initial sessions include the need to gather background information about the patient overall as well as the symptoms of concern, subsequent sessions are focused on learning the impact of the treatment.

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Rebecca Kostopoulos, PMHNP, is a board-certified psychiatric nurse practitioner committed to helping individuals facing mental health challenges lead full and balanced lives.

Her practice primarily focuses on medication management, often combined with supportive or emotionally focused therapy during 30-minute follow-up visits. When appropriate, Rebecca may recommend involving an additional therapist to ensure the most effective and comprehensive care.

She earned her Master of Science in Nursing with a specialization in psychiatry from Columbia University and her Bachelor of Science in Nursing from Boston College. Her training includes psychiatric diagnosis, medication management, and both psychodynamic and cognitive-behavioral therapies.

With over a decade of experience, Rebecca has evaluated and treated adults in a variety of clinical settings. Her previous roles include working at Elmhurst Hospital’s Comprehensive Psychiatric Emergency Program, Gracie Square Hospital’s inpatient unit, as well as in community health centers and skilled nursing facilities.

As a nurse practitioner, Rebecca believes that mental health is just as vital as physical health. She values the therapeutic relationship and approaches treatment with empathy and collaboration, ensuring that each patient receives personalized and compassionate care.

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