Samuel Russell, MD

Dr. O’Mara is a board-certified geriatric and general adult psychiatrist. She is originally from Ohio where she obtained her bachelor’s degree in neuroscience and psychology from Wright State University and attended medical school at Ohio University. She completed her psychiatry residency and geriatric psychiatry fellowship through Michigan State University at Pine Rest in Grand Rapids, Michigan. She has provided psychiatric care in both inpatient and outpatient settings. She was a faculty member and Associate Program Director for Trinity Health Livonia’s psychiatry residency. In her free time, she enjoys drawing and hiking.

Dr. O’Mara eagerly treats a wide range of age groups and conditions and is passionate about patients coping with chronic medical conditions and caregivers. She also has experience with perinatal mood disorders, obsessive compulsive disorder, and PTSD. She strives to deliver evidence-based treatment tailored to her patient’s individual needs.

In addition to medication management, she incorporates brief therapy modalities into her appointments including supportive therapy, cognitive behavioral therapy, and dialectical behavioral therapy skills. She will work with you to determine if more comprehensive therapy may be needed. She also can provide practical and realistic behavioral strategies to caregivers and patients with memory changes. Dr. O’Mara prefers to meet patients where they are in a supportive, safe, and non-judgmental environment.

Background  and credentials    

Dr. Christa DeFries is a board-certified Adult Psychiatrist. She earned her  medical degree from UT Southwestern Medical School in Dallas, Texas, and  completed her residency in Adult Psychiatry at Baylor Scott & White in  Temple, Texas. Following residency, Dr. DeFries gained additional experience  treating homeless and formerly homeless populations in New York City,  particularly focusing on individuals with histories of trauma and substance  addiction, prior to joining Talkiatry.    

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Treatment approach    

Dr. DeFries practices Adult Psychiatry, employing an integrative treatment  approach combining medication management, psychotherapeutic methods, and  lifestyle modifications. She recognizes that each patient benefits from a  personalized mix of these three aspects of care. Dr. DeFries specializes in  treating diverse psychiatric conditions, including those related to trauma,  substance addictions, and various mental health disorders.    

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What you can expect in a first visit    

In a first visit with Dr. DeFries, patients can expect a comprehensive  evaluation aimed at understanding their individual mental health history,  specific concerns, and overall treatment goals. Dr. DeFries emphasizes an  individualized approach, carefully exploring the best combination of  medication, therapy, and lifestyle adjustments tailored specifically to each  patient's needs. Patients can anticipate an empathetic and collaborative  environment focused on their personal experiences and goals.    

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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.

Trudy Warner-Phillips, PMHNP, is a board-certified psychiatric nurse practitioner with over 25 years in nursing and 7+ years in psychiatric care. Her experience spans outpatient, inpatient, and telehealth settings, where she treats conditions such as anxiety, depression, PTSD, mood disorders, and ADHD. She is passionate about delivering thoughtful, evidence-based care in a supportive and accessible virtual environment.

Trudy’s approach is grounded in trust, respect, and collaboration. She values open, honest communication and aims to create a space where clients feel heard, safe, and empowered. By understanding each person beyond their symptoms, she tailors care to support individual challenges, strengths, and goals.

Initial sessions involve a thorough assessment of medical and psychiatric history, current concerns, and past treatments. Trudy then works with clients to develop a personalized care plan focused on their most pressing symptoms. Her treatment may include medication management, supportive therapy, and lifestyle recommendations to promote lasting emotional well-being.

Dr. Candice Hacker is a board-certified Psychiatrist at Talkiatry. She completed her Psychiatry residency and a fellowship in Consultation Liaison Psychiatry at Mount Sinai/St. Luke's Hospital. She is passionate about a holistic approach to patient care, trained in psychosomatic medicine, and she has a deep appreciation for the intricate connection between the mind and body. With over 20 years of experience, Dr. Hacker has facilitated excellent outcomes in the treatment of various mental health conditions, including anxiety disorders, mood disorders, and trauma-related conditions. Dr. Hacker believes in creating a safe, nurturing and non-judgmental environment where patients can openly explore their emotions and experiences. By integrating evidence-based psycho-pharmacological modalities with mindfulness and cognitive-behavioral techniques, she empowers her patients to challenge a negative mindset and reach their goals. Beyond her clinical practice, Dr. Hacker is deeply committed to community mental health advocacy and the destigmatization of mental illness.

Dr.Gusta Shurdut is a board-certified adult psychiatrist with 8 year experience. She completed her medical training at SUNY Downstate Medical center in Brooklyn, and psychiatric residency at Mount Sinai Beth Israel, NYC. After her residency, she worked as an assistant professor at Mount Sinai Psychiatric Ambulatory Services. Dr.Shurdut graduated magna cum laude from Columbia University with an undergraduate degree in biology. Prior to moving to New York, she obtained a degree in communications and public relations and worked as a journalist at her hometown in Latvia.

Dr.Shurdut believes in individual, empathetic, and collaborative treatment approach. Through her residency and work experiences, Dr.Shurdut has developed expertise to treat various mental health conditions including mood disorders, anxiety, OCD, ADHD, PTSD. While her primary focus is medication management, she also incorporates CBT, psychodynamic and supportive psychotherapy.

Dr.Shurdut’s goal is empowering patients to participate in their healthcare choices. As a psychiatrist, she feels honored to witness the complexity of the human experience, and curious to explore the factors that contribute to it.  On intake appointment, she will take time to understand your concern, provide assessment, discuss treatment options and collaboratively decide on most appropriate action. The follow up appointments are usually 30 minutes and include a psychotherapy modality.

Brenda Keirns, LPC, NCC, is a Licensed Professional Counselor recognized by the National Board for Certified Counselors. She earned her Master’s degree in Clinical Counseling from Bellevue University and has extensive experience across inpatient, outpatient, and telehealth settings. Brenda is trained in EMDR through an EMDRIA-approved program and brings over six years of licensure experience. With a multicultural upbringing and more than 18 years as a military spouse, including Command Team involvement, she has a deep understanding of the unique challenges faced by diverse individuals and families. Brenda also serves as a Committee Member for Integratus, the academic journal of the Catholic Psychotherapy Association.

Brenda values open communication and creates a warm, non-judgmental environment where patients feel respected and supported. She tailors treatment to each patient’s unique needs and utilizes an eclectic, evidence-based approach drawing on CBT, EMDR, SFBT, REBT, DBT, attachment-based theory, trauma-informed care, and faith-based therapy rooted in Thomistic Psychology. Brenda helps patients address depression, anxiety, trauma, substance use, relational challenges, personality disorders, and life transitions.

Brenda partners with patients to develop practical coping tools while building on strengths and resilience. She emphasizes collaboration to ensure that patients actively shape their therapeutic goals. With a balance of compassion and clinical expertise, Brenda integrates evidence-based practices with individualized strategies to promote emotional well-being, personal growth, and improved daily functioning.