Stephanie Negrey, MD

Lance Briggs is a dedicated Psychiatric Nurse Practitioner with over a decade of clinical and leadership experience. A graduate of the University of North Dakota, Lance began as a psychiatric RN in acute inpatient settings before becoming a psychiatric RN supervisor in a major Houston hospital while pursuing advanced practice.

After becoming a PMHNP, Lance initially worked with outpatient addiction treatment and severe mental illness populations, later expanding into bariatric psychiatry to support patients preparing for weight-loss surgery. When the COVID-19 pandemic paused bariatric procedures, Lance founded a private practice—Grey Matters Mental Health—in Seattle, which was later sold to a larger healthcare organization in Minnesota. Lance then transitioned into correctional mental health, serving underserved populations within the criminal justice system. Currently, Lance is working at Talkiatry, providing compassionate, high-quality care informed by experience across diverse and challenging environments.

Lance understands that every patient is unique. His approach is grounded in Carl Rogers’ principle of unconditional positive regard, creating a safe, calming space where patients feel heard and valued. Lance takes time to explore developmental history, family background, and major life events, recognizing how past experiences shape present challenges. He aims to understand each symptom fully and offers thoughtful, collaborative treatment options.

Myrtle Davenport is a dual certified Family Psychiatric Nurse Practitioner with over 12 years of experience in healthcare. She completed her Masters of Science in Nursing (MSN) degree with a concentration in Family Nurse Practitioner at Chamberlain University and a Post Master’s in Psychiatric Mental Health Nurse Practitioner at Valdosta State University. Myrtle is skilled in assessing and treating a variety of mental health disorders including but not limited to anxiety, major depression, PTSD, ADHD, OCD, and other mood disorders across the life span. She is trained in psychiatric diagnosis, medication management, and supportive therapy. Over the past 7 years, she has gained valuable experience in a number of settings, including outpatient, inpatient, and residential facilities, community mental health clinics, and private practice.

Myrtle is dedicated to providing a safe and nonjudgmental environment where patients can expect to be heard, emotionally validated, and supported. She will ensure that patients are well-informed, empowering them to be active participants in managing their care. By fostering a strong therapeutic relationship, she will support her patients in achieving long-term mental wellness and resilience.

As a dedicated Psychiatric Nurse Practitioner, Myrtle provides comprehensive mental health care to individuals across the lifespan, helping them navigate through their mental health challenges with a holistic, compassionate approach. Her clinical practice involves conducting a thorough assessment and gathering relevant information from patients about their medical, psychiatric, and social history. Through open and empathetic communication, she will ensure a deep understanding of their symptoms, challenges, and goals. Based on the assessment, she will work closely with her patients to develop an individualized treatment plan and lifestyle recommendations. She will offer education on mental health conditions, coping strategies, and self-care techniques. She also provides referrals to therapists and other support services, helping patients develop the skills they need to thrive. She also believes in providing psychoeducation to patients, families, and caregivers. Myrtle's approach to patient care is grounded in empathy, respect, and evidence-based practices, and she is committed to fostering a supportive, collaborative environment where patients feel empowered to achieve their mental health goals.

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Background and credentials

Dr. John Whittier is a board-certified psychiatrist. He earned his Bachelor of Arts in Molecular, Cellular, and Developmental Biology from the University of Colorado at Boulder and went on to obtain a master’s degree in Medical Science from Loyola University Chicago. He completed his medical training at the Robert Larner, M.D. College of Medicine at The University of Vermont and returned to Colorado for his psychiatry residency at the University of Colorado School of Medicine. While in residency, he specialized in the Psychotherapy Scholars Program and has since gained four years of experience treating psychiatric conditions through telehealth.

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Treatment approach

Dr. Whittier primarily focuses on medication management for general psychiatric conditions. His approach is individualized, ensuring that each patient receives a treatment plan tailored to their unique needs. He integrates supportive therapy, medications, and evidence-based alternative therapies to provide a flexible and comprehensive approach. In addition to his general practice, he maintains a psychodynamic psychotherapy panel where he helps patients explore developmental and relational patterns that contribute to their symptoms. His specialties include treating depression, anxiety, adjustment disorders, PTSD, insomnia, bipolar disorder, and ADHD.

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What you can expect in a first visit

During the first visit, patients can expect a one-hour comprehensive intake during which Dr. Whittier thoroughly evaluates their symptoms, medical history, and personal goals. He provides treatment options that prioritize flexibility, allowing patients to take an active role in their care. Follow-up visits typically last 20 to 30 minutes, focusing on assessing treatment progress and making necessary adjustments. For those engaged in psychodynamic psychotherapy, longer one-hour sessions are available for in-depth exploration of underlying psychological patterns.

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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. He is board-certified in adult psychiatry and addiction medicine. She is passionate about providing quality and accessible mental health care while considering each patient's concerns, values, and life circumstances. She received her medical doctorate degree from State University of New York (SUNY) Downstate Medical Center, and completed her psychiatry residency at George Washington University Hospital in DC. Prior to medical school, she completed a Master of Public Health from Yale School of Public Health. Dr. He has special clinical interests in providing trauma-informed and culturally competent care in the treatment of mental health conditions. She has experience working with special populations, such as minorities, immigrants, perinatal women, and LGBTQ+ communities. She holds a certificate from Harvard in Global Mental Health: Trauma and Recovery Program. She currently serves on the Board of Directors for a non-profit organization in Washington DC to prepare people recovering from mental illness to improve their quality of life. Although Dr. He's practice primarily focuses on medication management, she looks forward to getting to know you and incorporating her experiences with insight-oriented therapy in 20 or 30 minute follow-up visits.

Dr. Tyler Alderette is a board-certified psychiatrist with experience treating patients in outpatient and telehealth settings. He earned his medical degree from the American University of the Caribbean School of Medicine and completed his psychiatry residency at Larkin Community Hospital in Miami, Florida. His clinical interests include depression, bipolar disorder, anxiety disorders, ADHD, trauma-related conditions, psychotic disorders, and substance use concerns. Dr. Alderette provides evidence-based medication management integrated with psychotherapy-informed care and is committed to staying current with advances in psychiatric treatment to ensure safe and effective care.

Dr. Alderette strives to create a warm, nonjudgmental, and respectful environment where patients feel comfortable sharing their experiences. His approach is collaborative and patient-centered, working closely with patients to set clear goals and select treatments aligned with their values. He takes a whole-person approach, considering mental health alongside sleep, relationships, medical conditions, culture, and life stressors, and provides affirming, inclusive care for patients of all ages and backgrounds.

Dr. Alderette begins with a comprehensive evaluation to understand each patient’s history, current concerns, and personal goals. Treatment plans are individualized and may include medication management along with supportive therapy, cognitive behavioral therapy (CBT), and motivational interviewing. Follow-up visits focus on progress, side effect management, and ongoing adjustments, with an emphasis on education, open dialogue, and long-term stability.

Dr. Giselle Brito is board-certified in adult psychiatry and has been practicing for over 4 years. She received her medical degree from San Juan Bautista, School of Medicine in Puerto Rico and continued her medical education at Jackson Memorial Hospital & University of Miami Hospital for her 4-year psychiatry residency training program. After completing her training, Dr. Brito worked at the Miami Veterans Affairs Hospital and then the Orlando Veterans Affairs Hospital in the primary care mental health integrated model. Dr. Brito also holds certification in Perinatal Mental Health. Dr. Brito's practice focuses on medication management and supportive psychotherapy in typically 30-min follow up visits. At times, additional psychotherapy is needed and a therapist may be added to provide the best outcome.‍