Diane Lewis, MD

Dr. Osamudiamen Osa-Edoh is board-certified in general adult psychiatry. He earned his medical degree from the University of Benin in Nigeria and completed his psychiatry residency at Meharry Medical College in Nashville, Tennessee, where he served as Chief Resident and received multiple honors. He previously served as Medical Director at Sumner Regional Hospital and Assistant Professor at Meharry Medical College.

As a psychiatrist, Dr. Osa-Edoh diagnoses and treats mental illnesses through medication management and psychotherapy. He believes in a kind, compassionate, and evidence-based approach that prioritizes patient needs and fosters a supportive, healing environment.

Dr. Osa-Edoh creates a welcoming, collaborative space where patients feel heard and supported. He takes time to listen, building trust and a strong therapeutic relationship. His goal is to partner with each patient to support their mental health and help them reach their personal wellness goals.

Amber Gordon, PMHNP-BC, is a board-certified psychiatric nurse practitioner dedicated to providing personalized mental health care. She holds a Bachelor of Science in Healthcare Administration from the University of Memphis, a Bachelor of Science in Nursing from Union University, and a nursing practice degree from the University of Tennessee Health Science Center.

With over a decade of clinical experience, Gordon has worked in a variety of settings, including psychiatry, intensive care, and dialysis. Her psychiatric experience spans inpatient and outpatient care, as well as residential and correctional facilities. She has served diverse populations, addressing a wide range of mental health conditions such as mood disorders, anxiety disorders, substance use disorders, trauma- and stressor-related disorders, and perinatal psychiatric conditions.

Gordon’s approach to mental health emphasizes the complex interplay between mental and physical well-being, lifestyle choices, and environmental factors. She integrates conventional medicine with alternative therapies, recognizing the importance of medication while also advocating for therapy, nutrition, and lifestyle changes. This holistic philosophy reflects her belief in each patient’s unique journey to mental wellness. Her therapeutic style is described as warm, empathetic, and empowering, with a strong focus on building a trusting and connected therapeutic relationship.

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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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Background and credentials

Dr. Ian Goldberg is a board-certified adult and child/adolescent psychiatrist and a licensed physician in New York state. He has been practicing since 1988 and has extensive experience working with patients in private practice, hospital settings, and community-based mental health programs. His professional career has included work both in and outside of the United States.

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Treatment approach

Dr. Goldberg takes an eclectic approach to psychiatric care, integrating various treatment modalities, including psychodynamic perspectives and medication management. His focus is on improving his patients' overall quality of life by tailoring treatment strategies to their unique needs.

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What you can expect in a first visit

During the initial visit, patients can expect a comprehensive and individualized evaluation. Dr. Goldberg values collaboration and strives to create a treatment plan that is both effective and adaptable. His experience allows him to approach each case with insight and flexibility, ensuring that patients receive care that is aligned with their personal goals and circumstances.

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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. Parrish is a board-certified adult psychiatrist with extensive experience in community psychiatry, academic psychiatry, veterans' mental health, and correctional psychiatry. She completed medical school and adult psychiatry residency at University of Miami/Jackson Memorial Hospital and a Master of Public Health from University of Virginia. She graduated with honors from University of Southern California with a Bachelor of Arts in Communication.  

Dr. Parrish is a member of the prestigious Alpha Omega Alpha national medical honor society. She has also produced over 20 peer-reviewed papers and posters.  

Dr. Parrish has worked with geriatric patients, individuals who identify as LGBTQ+, patients with serious mental illness, women with perinatal and postpartum needs, individuals with cancer, patients with co-occurring substance use disorders, and combat veterans.  

Dr. Parrish takes a patient-centered collaborative approach to tailor treatment plans to meet each individual's goals. Her technique promotes overall wellness. Utilizing her expertise in diagnosis and pharmacology, she optimizes care, monitors progress and ensures treatment success. Dr. Parrish incorporates behavioral activation techniques to promote improved mental health and overall well-being, with the ultimate goal of helping patients feel their best.

Dr. Mark Sundahl is a board-certified adult psychiatrist. He was born and raised in the suburbs of Kansas City, Kansas. He has always been fascinated by the natural world and received a bachelor’s degree in biology at Kansas State University where he was active in a research lab investigating protein function in the human body. He completed medical school training and residency at the University of Kansas School of Medicine in Kansas City, Kansas along with Wichita, Kansas. Dr. Sundahl has experience working with a broad range of mental health symptoms and a diverse patient population

Dr. Mark Sundahl is a board-certified adult psychiatrist. He was born and raised in the suburbs of Kansas City, Kansas. He has always been fascinated by the natural world and received a bachelor’s degree in biology at Kansas State University where he was active in a research lab investigating protein function in the human body. He completed medical school training and residency at the University of Kansas School of Medicine in Kansas City, Kansas along with Wichita, Kansas. Dr. Sundahl has experience working with a broad range of mental health symptoms and a diverse patient population

Dr. Sundahl understands the importance of collaboration and the therapeutic alliance when working with patients. He will clearly explain his findings and discuss treatment options he feels are reasonable. Dr. Sundahl thinks it is important for patients to have all the necessary information to make informed decisions when it comes to their psychiatric treatment.

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