Iris Vanessa Guerrero Urena, MD

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.

Dr. Garrick Gaffney is board certified in psychiatry by the American Board of Psychiatry and Neurology (ABPN). He earned his medical degree from Kansas City University and completed his psychiatry residency at John Peter Smith Hospital in Fort Worth, Texas. A combat veteran, he served in the U.S. Marine Corps, including a tour in Iraq, and was honored with the Navy and Marine Corps Achievement Medal and a Certificate of Commendation for exemplary leadership.

During medical school, Dr. Gaffney pursued advanced training as an Osteopathic Manipulative Medicine fellow. As a resident, he served as Chief Academic Resident and earned accolades such as Intern of the Year and Outstanding Educator of the Year twice consecutively.

Dr. Gaffney specializes in treating complex psychiatric conditions, including depression, anxiety, PTSD, OCD, bipolar disorder, and insomnia. He has presented case studies and quality improvement projects at national conferences, including the American Psychiatric Association (APA), Academy of Consultation-Liaison Psychiatry, and Association for Academic Psychiatry.

A proponent of holistic care, Dr. Gaffney integrates psychotherapy into medication management and emphasizes lifestyle modifications and evidence‑based integrative medicine.

New patients receive comprehensive evaluations to rule out medical causes of symptoms, followed by tailored treatment plans combining therapy, medication, and lifestyle adjustments. Follow‑up visits focus on symptom management through supportive, brief dynamic, or cognitive behavioral therapy, with frequent appointments until stabilization is achieved.

Dr. Gaffney is committed to collaborative, patient‑centered care that addresses both mental and physical well‑being.

Dr. Mousavi holds the position of attending psychiatrist at Talkiatry. She is Board certified in adult psychiatry and has been practicing for over 6 years. Dr. Mousavi's practice focuses on medication management. Typically, she offers this in conjunction with supportive therapy in 30-minute follow up visits. Dr. Mousavi may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. She has completed her residency at Westchester Medical Center/New York Medical College. She has experience of working in private practice at the Institute for Family Therapy in Miami. She has also worked as an outpatient psychiatrist at Montefiore in NY and INOVA outpatient clinic in Virginia.

Dr. Krithika Mittakanti is a board-certified psychiatrist with experience in both outpatient and inpatient settings. She earned a Bachelor of Science in Biomedical Engineering from The University of Texas at Austin and her medical degree from the University of Texas Southwestern Medical Center in Dallas. She completed her psychiatry residency at Baylor College of Medicine Menninger Department of Psychiatry and Behavioral Sciences in Houston, TX. Dr. Mittakanti previously served as a Staff Psychiatrist at the Michael E. DeBakey Veterans Affairs Medical Center for over seven years, where she evaluated and treated veterans with a wide range of psychiatric conditions including depression, anxiety and panic disorders, PTSD, bipolar-related disorders, ADHD, and substance use disorders.

Dr. Mittakanti practices with empathy, compassion, and active listening, maintaining a non-judgmental approach to create a safe and respectful environment. She values open communication and works closely with patients to establish clear, shared treatment goals.

Dr. Mittakanti begins by gaining a thorough understanding of each patient’s history, concerns, and goals. She takes a holistic approach, considering biological, psychological, social, and environmental factors. Treatment plans are individualized and may include medication, psychotherapy, and lifestyle changes, with a collaborative team-based approach when appropriate.

Dr. Zhou is a board-certified psychiatrist who has more than 4 years of experience practicing in various clinical settings with an emphasis on mental health care in outpatient settings. She practices a holistic approach to developing an individualized plan to work toward a patient's goals. Dr. Zhou is experienced in treating depression, bipolar spectrum disorders, obsessive-compulsive disorders, post-traumatic stress disorder, generalized anxiety, and other related psychiatric disorders. Dr. Zhou received her medical degree from Texas Tech University Health Sciences Center School of Medicine and completed her adult psychiatry residency training at LSU Health Shreveport. Dr. Zhou's background and experiences have broadened her understanding of cultural stigmas and the relationship it plays in psychiatric care. She incorporates a multitude of treatment modalities such as supportive therapy, cognitive behavioral therapy, and mindfulness practices as an adjunct to pharmacotherapy. Dr. Zhou recognizes the value of a multifaceted approach to wellbeing and may recommend treatment modalities that are complementary to medication management.

Dr. Dave Kopacz studied psychology, medicine, and psychiatry at the University of Illinois. He has over 25 years of clinical experience, most recently 11 years at the Seattle Veterans Affairs and as a national VA Whole Health Education Champion, teaching holistic self-care to staff and veterans. Prior to that, Dr. Kopacz was Clinical Director of a psychiatric rehabilitation center in New Zealand. He has worked in private practice, rural community mental health, and ran a VA tele-health program for Native American/Alaskan and Pasifika veterans.

Dr. Kopacz is board certified in Psychiatry & Integrative Medicine, a certified yoga instructor and a certified iRest (Integrative Restoration) meditation teacher. He is an author and international speaker on topics of burnout, well-being, medical humanities, creativity and health, and cross-cultural approaches to healing. His books include Caring for Self & Others: Transforming Burnout, Compassion Fatigue, and Soul Loss, and Re-humanizing Medicine. He has also co-authored four books with Joseph Rael (Beautiful Painted Arrow), including Walking the Medicine Wheel: Healing Trauma & PTSD.

"What is your typical process for working with patients?"

Dr. Kopacz combines psychiatric diagnosis with a collaborative and holistic focus on your strengths and personal growth. Combining a psychiatric and self-care assessment, he will help you find a plan for medication, psychotherapy, and well-being work that feels right for you.

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