Megan Tusken, MD

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.

Dr. Moskowitz (she/her) is a licensed adult psychiatrist. She earned her medical degree from Albert Einstein College of Medicine and completed her psychiatry residency at the University of Arizona. She has extensive experience treating a wide range of mental health conditions, including depression, anxiety, ADHD, bipolar disorder, PTSD, OCD, and psychotic disorders. Dr. Moskowitz is especially passionate about working with transgender and other LGBTQ+ patients, offering inclusive, identity-affirming care tailored to each individual’s experience and needs.

Dr. Moskowitz takes a warm, collaborative approach grounded in empathy and trust. She believes in meeting patients where they are and working together to build a therapeutic relationship that supports healing, self-understanding, and personal growth. Patients can expect a nonjudgmental, respectful environment where their goals and concerns are genuinely heard and addressed.

Dr. Moskowitz integrates elements of psychodynamic, supportive, and cognitive-behavioral therapy into her work and offers medication management when appropriate. She emphasizes a personalized treatment plan for each patient, designed to align with their unique values, history, and goals. Her process includes thorough assessment, open dialogue, and flexible adjustments as needs evolve over time.

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Background and credentials

Dr. Nereida Gonzalez-Berrios is a general psychiatrist fluent in English and Spanish. She earned her bachelor’s degree in Microbiology from the University of Puerto Rico and her medical doctorate from Ponce School of Medicine (now Ponce Health Sciences University). She completed her General Psychiatry Training Program at the University of Puerto Rico Medical Sciences Campus, graduating in 2008. After practicing privately in Puerto Rico, she relocated to Texas, where she worked for over five years at the Michael E. DeBakey VA Health System, providing mental health care to veterans. She has also gained extensive experience in telemedicine, working both within the VA system and as a locum tenens provider.

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Treatment approach

Dr. Gonzalez-Berrios has extensive experience treating a wide range of psychiatric conditions, including mood disorders, anxiety disorders, psychotic disorders, intellectual impairment, ADHD, eating disorders, PTSD, and personality disorders. She integrates traditional psychiatric treatment with a holistic wellness approach, drawing on her background as a motivational speaker, wellness coach, certified personal fitness trainer, nutrition coach, and weight-loss specialist. Her approach emphasizes improving overall mental and physical well-being through personalized treatment plans that incorporate psychiatric care, wellness strategies, and lifestyle modifications.

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What you can expect in a first visit

Patients can expect a comprehensive psychiatric evaluation where Dr. Gonzalez-Berrios carefully assesses their symptoms, medical history, and personal wellness goals. She takes a collaborative and patient-centered approach, ensuring that treatment is tailored to each individual’s mental and physical health needs. As an experienced telemedicine provider, she offers accessible and flexible mental health care, combining medication management and holistic wellness strategies to help patients achieve lasting well-being.

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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. Jessica Grimes is a board-eligible child and adolescent and adult psychiatrist. She is originally from Sylva, NC. She earned a bachelor's degree in religion and minored in biology at The University of the South in Sewanee, TN. She graduated cum laude and was inducted into the order of the gownsmen, an honor society. She earned her doctorate from the West Virginia School of Osteopathic Medicine in Lewisburg, WV. Dr. Grimes completed a traditional rotating internship through WVSOM at Our Lady of Bellefonte Hospital in Ashland, KY and completed residency training in psychiatry at Lake Erie College of Osteopathic Medicine in Erie, Pennsylvania. While in residency, she earned a master's degree in medical education from LECOM. She completed a fellowship in child and adolescent psychiatry at the University of South Carolina School of Medicine, Greenville. During her second year of fellowship at USC-Greenville, she received the "Child & Adolescent Psychiatry Fellow of the Year� award.

Dr. George Han is an adult psychiatrist who earned his undergraduate degree in Materials Science and NanoEngineering from Rice University, his medical degree from the University of Texas Southwestern Medical Center and completed his psychiatry residency training at the University of Mississippi Medical Center. He is certified by the International Society for Sports Psychiatry (ISSP), reflecting his expertise in mental health care for athletes. Now based in New York City, Dr. Han brings a broad geographic and cultural perspective, having previously lived in China, Canada, Illinois, California, Texas, and Mississippi.

Drawing on these diverse experiences, Dr. Han is committed to providing culturally responsive and identity-affirming care, with a particular focus on immigrant communities, LGBTQIA+ individuals, and high-performance professionals. He uses a collaborative, narrative-informed approach that centers each patient’s lived experience and values. His integrative method helps individuals recognize emotional and behavioral patterns shaped by cultural, relational, and systemic factors.

In clinical practice, Dr. Han combines evidence-based medication management with appropriate psychotherapy techniques and elements of executive coaching. This comprehensive approach supports patients navigating high-pressure environments, helping them achieve greater clarity, resilience, and confidence across both personal and professional domains

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Dr. Bartek holds the position of Staff Psychiatrist at Talkiatry. She is board-certified in General Psychiatry, Pediatrics, and Child and Adolescent Psychiatry. She has been caring for children and adolescents as a physician for more than 15 years. Dr. Bartek's approach is holistic, collaborative, supportive, and patient-centered. Dr. Bartek draws on her years as a pediatrician working with families and children in her work as a psychiatrist. Dr. Bartek incorporates therapeutic techniques into medication management visits, but she may also recommend adding a therapist to your care team for the best results. She received her medical degree from the University of Washington School of Medicine in Seattle, WA, before moving to Memphis to complete her residency in Pediatrics at the University of Tennessee Health Sciences Center and Le Bonheur Children's Hospital. She completed her undergraduate studies at Haverford College in Pennsylvania. After completing training, she remained in Memphis and worked in the Le Bonheur Children's Hospital Emergency Department as a pediatrician. She then moved to Nashville to work at the Monroe Carell Jr. Children's Hospital at Vanderbilt in the Emergency Department Fast Track and After-Hours Clinics. Dr. Bartek transitioned to primary care pediatrics at Pediatric Associates of Davidson County for several years before returning to the University of Tennessee Health Science Center in Memphis to complete the Child and Adolescent Psychiatry Post-Pediatric Portal Fellowship program. Dr. Bartek's primary clinical focus is treating children and adolescents.