Jessica Vassallo, LCSW

Dr. Samuel Russell is a psychiatrist at Talkiatry. He is board certified in Addiction Psychiatry and Adult Psychiatry. His particular clinical focus is on the treatment of Obsessive Compulsive Disorder, and behavior addictions, as well as trauma, mood, and anxiety disorders. Dr. Russell's practice focuses on evidence-based treatments for psychiatric illness that utilizes a combination of medications and psychotherapy modalities best suited for an individual patient and their needs. He offers this in conjunction with supportive or emotionally focused therapy in 30-minute follow-up visits. Weekly hour-long psychotherapy may be available if indicated. However, occasionally, Dr. Russell may believe that different therapies are also needed and ask that you bring a therapist into your care team to provide the best outcome. He received his medical education at the University of Washington in Seattle after completing undergraduate studies in psychology and later a post-baccalaureate at Boston University. After residency at the University of Chicago where he specialized in addiction psychiatry and psychotherapy, he completed an Addiction Psychiatry Fellowship at the University of Washington in Seattle.

James "Derek" Slover, LPC-S (but just call him Derek), has been practicing counseling since 2006. He has worked in a wide range of settings, including community clinics, hospitals, and telehealth- and now helps teens, parents, and adults navigate the challenges of anxiety, mood disorders, behavior issues, and more.

Derek's approach is collaborative, practical, and rooted in evidence-based care. He brings humor, clarity, and a no-nonsense style to counseling, believing that treatment should make sense and feel useful. You won't get psychobabble or a 47-slide PowerPoint presentation- just honest conversations, thoughtful listening, and tools that work. His clinical toolbox includes CBT, Parent Management Training, Exposure & Response Prevention, and other proven approaches tailored to each person's needs.

Counseling with Derek starts with a thorough assessment to understand what’s been getting in your way. From there, you’ll work together to set goals that reflect your values and priorities. Counseling typically moves through three phases: 1) building a strong therapeutic relationship, 2) doing the deep work of change, and 3) maintaining progress and preparing for graduation- because counseling should be a launchpad, not a lifelong subscription.

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Ronnie Butler is a Licensed Professional Counselor with over 20 years of experience practicing in psychiatric, clinical, and inpatient settings. After completing an undergraduate degree in psychology in Oklahoma, Ronnie earned a graduate degree in Counseling Psychology from Sam Houston State University in Huntsville, Texas. He is licensed in Oklahoma, Texas, and New Mexico, and holds an endorsement from the Oklahoma State Board of Behavioral Health as a Clinical Supervisor for LPC Interns. Ronnie is also an active member of the American Counseling Association and the Oklahoma Counseling Association’s Mental Health Counselors Division.

Ronnie focuses on supporting individuals facing depression, anxiety, mood instability, trauma, adjustment challenges, attention difficulties, and substance use concerns. He values open communication and collaboration, helping patients set clear and realistic treatment goals. Ronnie strives to create a warm, supportive environment where patients feel heard, respected, and empowered to engage in their own growth process.

In the initial session, Ronnie takes time to thoroughly understand each patient’s history, concerns, and personal goals. He then develops an individualized, measurable treatment plan that aligns with each patient’s needs. Throughout the therapeutic process, Ronnie regularly reassesses progress to ensure therapy remains meaningful, effective, and tailored to achieving lasting change.

Scott Tuckman is a Licensed Mental Health Counselor who arrives with a robust set of backgrounds across several fields of interest, with immersion among numerous cultures and diverse ways of life. He has worked in multiple capacities in a variety of settings around the U.S., ranging from correctional to educational to inner-city community-based to corporate. With an eye on what influences the ever-present connections between body and mind and emotional states, Scott works well with those struggling with mood disorders, depression, a range of anxiety disorders, relationship problems, esteem issues, adjustment concerns, emotional dysregulation, and more. While Scott is psychodynamically oriented, he blends attachment theory application, mindfulness, selections from CBT and DBT modalities, or other treatment mechanisms tailored to meet each client's needs and complement any assigned psychopharmacological undertaking. Considering it an honor to join someone on their journey, he takes a direct yet compassionate approach so as to establish a comfortable co-owned therapeutic relationship. Ultimately, he strives to help clients gain a more comprehensive understanding of how they can move themselves forward and collaboratively develop the readiness to step towards it. When goals have been met and it's time to finally part ways, Scott hopes each client's tool belt is fortified with newly acquired techniques to overcome the inevitable obstacles on the road ahead.

Dr. Kristofer Joondeph-Breidbart is a board certified adult psychiatrist. He earned his undergraduate degree and Master's in Teaching from Boston University, followed by his medical degree from the University of Massachusetts Medical School. Dr. Joondeph-Breidbart completed his residency in general adult psychiatry at Cambridge Health Alliance, a Harvard teaching hospital. Currently, Dr. Joondeph-Breidbart serves as a staff psychiatrist at Harvard University Health Services, where he works with both undergraduate and graduate students. He has developed significant expertise in working with LGBTQ individuals through his involvement with the Gender and Sexuality Clinic at Cambridge Health Alliance and the LGBTQ Interdisciplinary Team at Harvard University Health Services. While he has extensive expertise in treating college-aged young adults, his practice also includes a broad range of patients, with a particular specialization in Obsessive-Compulsive Disorder (OCD). He is trained in Exposure and Response Prevention Therapy, a highly effective treatment for OCD. Dr. Joondeph-Breidbart takes a holistic approach to mental health care, integrating therapy into his sessions and collaborating with patients to develop individualized medication regimens that best meet their needs. His gentle and understanding approach helps create a supportive environment for his patients, fostering their mental and emotional well-being.

Dr. Alejandra Vivas is board-certified in adult psychiatry and board-eligible in child and adolescent psychiatry. She completed her general psychiatry residency at Montefiore Medical Center and a child and adolescent fellowship at Mount Sinai School of Medicine. Dr. Vivas brings extensive experience from outpatient, emergency, and telepsychiatry settings. She has advanced training in CBT, Motivational Interviewing, and Psychodynamic Therapy. Fluent in English and Spanish, she is committed to culturally sensitive, individualized care.

Dr. Vivas fosters a warm, respectful, and professional space where patients feel seen and empowered. She values open communication and builds collaborative relationships to align treatment with each person’s values, goals, and lifestyle. Her approach is integrative and flexible, grounded in evidence-based methods to support lasting, meaningful change.

Dr. Vivas begins with a thorough evaluation to understand each patient’s history and goals. She creates customized treatment plans that may include therapy, medication, or both. Drawing on CBT, Motivational Interviewing, and Psychodynamic Therapy, she adapts care to meet evolving needs, aiming to relieve symptoms, foster resilience, and support long-term well-being.

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