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Sonya Isler, PMHNP

Staff Nurse Practitioner
Languages
English
Conditions Treated
Medication Management
ADHD
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma

Education and training

  • University of North Carolina At Chapel Hill ( Master of Science in Nursing )

Get to know

Sonya Isler, PMHNP

Sonya R. Isler, PMHNP-BC, began her nursing journey over 30 years ago in a state psychiatric hospital in Goldsboro, NC, inspired by the poised nurse she admired at church as a child. Her path includes roles as LPN, RN, BSN, and multiple advanced practice degrees. Sonya has worked in inpatient and outpatient settings, VA clinics, and private practices. She also serves as a preceptor for PMHNP students at her alma mater, the University of North Carolina at Chapel Hill.

Sonya creates a welcoming, respectful space where patients feel safe to communicate openly. She practices active listening and values patient input when setting therapy goals. Her approach is holistic—treating the whole person—and she encourages collaboration, helping patients feel seen, heard, and empowered in their care.

Sonya reviews a patient's history before each session and begins with clear introductions and goal setting. She invites open discussion of concerns and tailors' treatment plans with patient input. She often incorporates CBT, motivational interviewing, and solution-focused therapy into care, promoting growth through supportive, personalized strategies.

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Karel Routhier, MD

Staff Psychiatrist

Dr. Routhier was born in Quebec, Canada. She attended medical school at Ross University School of Medicine and graduated in three years with high honors. She trained as a psychiatry resident at Case Western Reserve School of Medicine in Cleveland, OH where she served as a junior attending and the medical student coordinator. She then was recruited by Monterey County Behavioral Health, CA as a clinical psychiatrist where she provided medication management and psychotherapy services to over 400 patients over the course of five years. She also created and led two dialectical behavior therapy groups for teens and young adults while training therapists and social workers to become group facilitators.

Dr. Routhier firmly believes in the mind-body connection. She feels that when the mind suffers, the body hurts as well and vice versa. As a result, she has developed a holistic approach to psychiatry and is comfortable offering a wide array of treatment modalities such as breathwork, dialectical behavior therapy, guided meditation, supportive psychotherapy, behavioral activation and medication management. She maintains that autonomy and a thorough understanding of one’s diagnosis and prognosis are critical for progress and healing. Her broad range of worldly experiences gives her the ability to work in a non judgemental, open-minded and authentic fashion. She connects with clients with ease and is passionate about self-awareness, constant evolution and empowering people so they can find their own way to happiness and health. She pushes her clients to find ways to build a life worth living, way beyond the goal of symptom resolution typical to psychiatry.

1. Getting to know you/understanding your “why”. Why are you seeking mental health treatment and why now? 2. Establish a list of issues and improvement zones. 3. Creating therapeutic goals. What do you want to work on? 4. Choosing treatment modalities to directly address these goals within a specific time frame. I provide updated and evidence-based information, and YOU choose what we do. 5. Figuring out the root causes to problems, symptoms and maladaptive behaviors/habits. How did this all start? Where does it come from? 6. Regular check-ins on how the treatment plan and therapeutic relationship are working for you. Are we a good fit? Are we meeting your goals/expectations? If not, back to the drawing board!

Leonardo Alexandre, MD

Staff Psychiatrist

Dr. Alexandre is a board-certified psychiatrist who completed his psychiatry training both in Brazil and in the United States, where he served as Chief Resident in both programs. He is fluent in both English and Portuguese and is especially attuned to the unique challenges faced by international and immigrant populations. Dr. Alexandre is passionate about helping patients achieve meaningful and sustained improvements in their mental health.

He brings over a decade of experience in mental health care and has a strong foundation in evidence-based treatment. His clinical interests include mood and anxiety disorders, ADHD, and cross-cultural psychiatry.

Dr. Alexandre incorporates a collaborative and compassionate approach to care, combining medication management with elements of cognitive behavioral therapy, behavioral activation, and interpersonal strategies when appropriate.

Christa DeFries, MD

Staff Psychiatrist

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.    

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.    

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.    

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.

Regina Fu, DO

Staff Psychiatrist

Dr. Regina Fu is a board-certified psychiatrist who began her interest in Psychiatry while studying Psychobiology at UCLA. After completing her General Psychiatry residency at University of Rochester, she emphasizes a holistic approach to mental health treatment using the biopsychosocial foundation. Her approach to patient care combines evidence-based medicine while recognizing the individual factors that can influence well-being. She has a special interest in Cultural Psychiatry and prioritizes providing personalized and effective care to a diverse patient population.

Jacob Kannarkat , MD

Staff Psychiatrist

Dr. Jacob T. Kannarkat is an adult psychiatrist. Dr. Kannarkat's practice focuses on medication management. In his visits, he uses an integrative approach, blending an empathic, problem-solving orientation with an understanding that the reasons for an individual's condition can be complex. He has experience dealing with many forms of mental illness and works collaboratively with his patients and their other treatment providers in making a plan for recovery. Dr. Kannarkat completed undergraduate studies at the University of Florida. After receiving his medical degree at the University of Miami Miller School of Medicine, Dr. Kannarkat continued for residency at the University of Miami/Jackson Health System. He ultimately completed his training as Chief of Psychiatric Emergency Services at Yale School of Medicine. Dr. Kannarkat has experience working with adults of all ages who are dealing with depression, anxiety, bipolar disorder, PTSD, substance use disorders, and many other conditions.‍

Mitchell Laski, MD

Staff Psychiatrist

Dr. Mitchell Laski earned a Bachelor of Science in Psychology from the University of Nebraska–Lincoln in 2011 and completed his medical degree at the University of Nebraska College of Medicine in 2017. He completed his residency in psychiatry at Naval Medical Center Portsmouth, Virginia, in 2021, where he was selected as Chief Resident. Dr. Laski has extensive experience in both outpatient and deployed settings, having completed two operational tours with the U.S. Navy. During these tours, he served in Embedded Mental Health Clinics and aboard deployed ships, working directly with Sailors.

Dr. Laski brings empathy, attentiveness, and a non-judgmental approach to every patient interaction. He is deeply committed to ensuring patients feel heard, respected, and understood. Patients can expect him to be thorough and dedicated, consistently advocating for their overall wellness throughout the course of treatment.

Understanding that beginning mental health care can be difficult, Dr. Laski starts with friendly, casual questions to build rapport—asking about patients’ background, interests, and current life situation. He then reviews their medical and psychiatric history before exploring current symptoms and stressors. Together, he and the patient collaborate to create a personalized treatment plan.

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Specialties
Medication Management
ADHD
Anxiety
Bipolar Disorder
Depression
Obsessive-compulsive disorder (OCD)
PTSD/Trauma
States
Virginia
New York
Languages
English
Takes insurance
Virtual visits
years experience