Theresa Colberg, MD

Dr. Melody Stupey is a board-certified psychiatrist with over 26 years of experience treating adults in both inpatient and outpatient settings. She earned her medical degree from Oregon Health Sciences University and completed her residency at the University of Texas at San Antonio. Dr. Stupey is certified by the American Board of Psychiatry and Neurology.

Dr. Stupey believes in a collaborative approach to treatment, emphasizing active listening, compassion, and respect. She strives to create a warm, supportive environment where patients feel safe and empowered to speak openly without fear of judgment.

Her treatment process is holistic, considering physical, emotional, and lifestyle factors. She evaluates diet, physical activity, sleep habits, and thought patterns alongside medication needs. Dr. Stupey prioritizes using the lowest effective dose of medication to meet treatment goals while supporting the patient’s overall well-being.

Kenneth Kavanagh is board certified as both a Psychiatric/Mental Health Nurse Practitioner and an Adult Nurse Practitioner.  His career has spanned 30 years with the last 17 years devoted exclusively to psychiatry.  He integrates his knowledge of psychiatry and primary care into evidence-based medication management strategies.  He also possesses a good working knowledge of alternative treatments and integrating alternative treatments into more traditional approaches.  When needed to enhance patient care outcomes, he frequently works collaboratively with psychotherapists, primary care providers, and/or medical specialists.  

Kenneth currently focuses on managing depressive disorders, anxiety disorders, adjustment disorders, ADHD, somatic disorders, OCD, and bipolar disorders.  Kenneth has significant experience in working with diverse groups, including urban and rural populations across socioeconomic spectrums, professionals and college students on all levels, members of the LGBTQ community, individuals confronting life stage transitions, and people living with chronic medical conditions.  

Kenneth’s psychotherapeutic methods are diverse and evolve to meet collaboratively developed treatment goals.  Kenneth’s interaction style is always empathic and respectful but can range from comforting and supportive to more directive and therapeutically confrontational strategies to maximize treatment goals, often with significant doses of humor throughout the therapeutic relationship.

Dr. Peter Hsieh has experience practicing in both outpatient and inpatient psychiatric settings. He earned his medical degree from the Zucker School of Medicine at Hofstra/Northwell and completed his psychiatry residency at Zucker SOM at Mather Hospital.

Dr. Hsieh values patient education and shared decision-making. He fosters a nonjudgmental environment where patients feel heard and supported, working collaboratively to develop a treatment plan that fits their goals and needs.

Dr. Hsieh begins with a comprehensive psychiatric evaluation and partners with each patient to create an individualized treatment plan that aligns with their values and evidence-based care. His approach often combines medication management with psychotherapeutic modalities.

Megan O’Brien is a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP) with experience in inpatient, outpatient, and emergency mental health settings. She earned her NP degree from UCSF, the top-ranked program in the country at the time. In addition to clinical work, she enjoys teaching and is passionate about training the next generation of compassionate psychiatric nurse practitioners.

Megan believes in meeting patients where they are, offering empathy, respect, and acceptance. She values open communication and sees treatment as a collaborative process. Her approach empowers patients to take the lead in their care while she supports them as a partner and guide along the way.

Megan begins by listening carefully to each patient’s story and asking relevant questions to understand their needs. Together, she and the patient build a tailored treatment plan that aligns with their goals. Her focus is on reducing mental health symptoms and helping people experience greater freedom and flexibility in their lives.

Severine Dondina, PMHNP-BC, is a board-certified psychiatric nurse practitioner with licensure in Washington and Florida. She holds a Master of Science in Nursing from the University of Alabama at Birmingham and graduated summa cum laude with dual bachelor’s degrees in nursing and biomedical science. Her background spans outpatient, community, forensic, and crisis psychiatry, including leadership roles with Florida’s Assertive Community Treatment (FACT) and Multi-Disciplinary Forensic Teams.

Currently serving patients in Washington, Severine treats adults with ADHD, anxiety, depression, PTSD, and bipolar disorder. She brings a trauma-informed, strengths-based approach to care and is deeply committed to creating affirming spaces for LGBTQ+ and gender-diverse individuals. Her clinical style combines evidence-based medication management with warm, collaborative support.

Trilingual in English, French, and Spanish, Severine is known for her cultural sensitivity, clinical rigor, and authentic presence. She approaches each patient with curiosity, humility, and respect—believing healing begins with connection.

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Dr. Ernesto Gonzalez is a board certified adult psychiatrist. He completed his undergraduate training at Yale University and received his medical degree from the University of Pennsylvania School of Medicine. He completed his residency training at the Cambridge Health Alliance/Harvard Medical School Adult Psychiatry Training Program. Dr. Gonzalez prefers a holistic approach that takes the time to know the whole patient, incorporating biological, psychological, social, and cultural perspectives in crafting a comprehensive, individualized, treatment plan. He practices medication management combined with supportive therapy, typically delivered within 30 minute sessions. Elements of psychodynamic, dialectical behavior and cognitive-behavioral therapy will also be incorporated into sessions based on a patient's individual needs. If additional therapy is needed, Dr. Gonzalez will recommend the addition of an individual therapist to the patient's treatment team. Having dedicated his career to adult outpatient psychiatry, Dr. Gonzalez has worked with patients from a wide range of ages, cultures, ethnicities, and social settings across the New York City area. His primary focus is working with patients with depression, anxiety, ADHD, and PTSD. He also values working with people adjusting to changes in their lives, whether it be grieving the loss of a loved one, changes in employment, relationships, or adjusting to changes that come with age. Prior to joining Talkiatry, Dr. Gonzalez was an Assistant Professor at the NYU Grossman School of Medicine and served as Director of the Adult Outpatient Psychiatric Department, Assertive Community Treatment (ACT) Team, and Collaborative Care Departments at Woodhull Hospital in Brooklyn, New York. He also had a small practice near his home. Dr. Gonzalez has also had a lifelong interest in meeting new people and experiencing different cultures. This interest has taken him as far away as the townships of Cape Town, South Africa and as close as his local diner, and it edifies the work he does with patients.