Nirupama Natarajan, MD

Dr. John Lundeen earned his medical degree from the Medical College of Georgia and completed his psychiatry residency at TriStar Centennial Medical Center. He has worked with adults of all ages in both outpatient and inpatient settings, bringing a wide range of experience to his practice.

Dr. Lundeen approaches every patient with respect, empathy, and a genuine desire to understand their unique experience. He recognizes that seeking treatment can be intimidating and strives to create a welcoming, non-judgmental environment where patients feel safe and heard.

Dr. Lundeen believes in a collaborative treatment process, prioritizing each patient’s goals, values, and input. He emphasizes mental health education as a core component of care, empowering patients to better understand their treatment options and take an active role in their well-being.

Dr. Santos is a highly experienced, Board-Certified Adult Psychiatrist with over 10 years of clinical experience in English and Spanish. He graduated from the Universidad Autónoma de Guadalajara School of Medicine and completed a rigorous 4-year psychiatric residency training in NYC at Lincoln Medical and Mental Health Center.

In his residency and post-residency practice, Dr. Santos has provided high-quality care to culturally diverse communities, and has extensive experience helping patients with Depression, Anxiety, ADHD, and other mental health conditions. He understands that choosing and seeing a psychiatrist can be stressful and is committed to providing a welcoming and non-judgmental environment where patients can feel free to discuss their concerns.

Dr. Santos takes a personalized approach to treatment, considering the unique psychology, biology, and lifestyle of each individual patient when determining the best course of action. His practice focuses on medication management in conjunction with supportive therapy, and he conducts follow-up visits in 30-minute increments. He believes that the most successful treatments integrate physical health, therapy, mindfulness, and medication, when necessary, to provide the most effective solutions for his patients.

If you are looking for a compassionate and experienced psychiatrist who is fluent in both English and Spanish, schedule an appointment with Dr. Santos today. His dedication to his patients and his extensive experience makes him an excellent choice for those seeking to improve their mental health.

Amber Boyd, LPC, has experience working in inpatient, outpatient, and virtual therapy settings. She has provided care for individuals with depression, anxiety, PTSD, adjustment disorder, schizophrenia, schizoaffective disorder, and bipolar disorder. Amber offers individual, group, family, and couples counseling, and is skilled in developing treatment plans, clinical documentation, and administering screenings such as the PHQ-9, GAD-7, and C-SSRS. She earned her B.S. in Psychology from Jackson State University and her M.S. in Counseling from Mississippi College. Amber completed her supervision hours at Mississippi State Hospital and obtained her LPC in Mississippi in 2019 and in Oklahoma later that same year.

Amber values honesty, trust, courage, and integrity. She believes in building strong rapport through open communication and mutual respect. Her approach is compassionate, direct, and goal-oriented, using a collaborative style to help clients increase emotional resilience, develop self-awareness, and strengthen coping skills to manage life’s challenges.

Amber strives to create a calm, nonjudgmental environment where clients feel safe to share their background, expectations, and therapy goals. Together, she and her clients create individualized treatment plans that reflect each person’s unique needs and diagnosis. Each plan includes realistic short- and long-term goals designed to promote growth, self-understanding, and lasting emotional well-being.

Dr. John Weller, MD, is a psychiatrist with a strong foundation in science and clinical care. He earned his undergraduate degree in molecular genetics from the University of Vermont and conducted neuroscience research in both academic and industry settings. A graduate of St. George’s University School of Medicine, he completed his psychiatry residency at Mather Hospital, Northwell Health, where he was honored as Resident of the Year in 2025 and inducted into the Alpha Omega Alpha Honor Medical Society.

Dr. Weller is committed to providing compassionate, evidence-based care that considers the full spectrum of biological, psychological, and social factors. He builds therapeutic relationships on empathy, respect, and trust. By tailoring treatment plans to each patient’s personal and cultural context, he helps individuals take control of their mental health and work toward long-term recovery and resilience.

In the first session, Dr. Weller takes time to listen carefully and gather a thorough understanding of each patient's concerns, history, and current functioning. He uses empathy and active listening to foster open communication and develop personalized treatment plans that may include therapy, medication, or lifestyle changes, with the goal of restoring wellness and stability.

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. Tony Tu is a board certified adult psychiatrist who emphasizes patient education and a psychodynamic approach to outpatient psychiatry. His passion for empowering patients with knowledge stems from his academic experience in psychiatry residency training. Dr. Tu's practice focuses on blending medication management together with psychotherapy. He also prioritizes collaboration with your therapist and encourages working together as a team. Dr. Tu is a graduate of the University of Chicago Pritzker School of Medicine where he completed an MD and PhD combined program which helped develop his "doctors as teachers” style of practice. Dr. Tu completed his psychiatry residency training at Loyola University Medical Center in Illinois. Dr. Tu served as an Associate Program Director of Loyola's Psychiatry residency training program for two years, and now maintains an Affiliate Assistant Professor of Psychiatry role with Loyola. He continues to contribute to residency training, as well as mentorship of medical students and psychology externs. Over the years, Dr. Tu has received several awards that demonstrate his affinity for teaching, including the Educator of the Year Award in 2022 from the Loyola Psychiatry Residency Program. Areas of specialization include psychopharmacology, patient-centered medicine, and combination treatment of psychiatry and psychotherapy. Dr. Tu understands that medications are not the end-all-be-all of treatment, but just the beginning. For trauma and acute stress, he understands that the journey starts at the tip of the iceberg, with much to explore as you feel more ready.