Bryce Thacker, PMHNP

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. Gregory Arthmann recently passed the ABPM Addiction Medicine board exam. Dr. Arthmann is an ABPN board‑certified psychiatrist who received his medical degree from the University of Sint Eustatius. He completed two years of Internal Medicine residency at WellSpan York Hospital in Pennsylvania prior to completing his Psychiatry residency training at East Carolina University in North Carolina.

Dr. Arthmann has over 10 years of experience practicing psychiatry and has treated a broad spectrum of acute and chronic psychiatric disorders. He utilizes a patient-centered, biopsychosocial approach to psychiatry, primarily focusing on psychopharmacological interventions that align with each patient’s unique treatment goals and clinical needs. His practice style centers around medication management with adjunctive supportive therapy tailored to individual needs. Depending on each patient’s circumstances, he may recommend additional support from individual, family, or group counselors and therapists to achieve optimal outcomes.

During an initial visit, patients can expect a thorough and collaborative discussion focused on their symptoms, treatment goals, and clinical needs. Dr. Arthmann will evaluate the patient’s condition to determine appropriate medication interventions and discuss personalized treatment recommendations. Typical follow-up visits are approximately 20–30 minutes in length. Depending on the severity and complexity of a patient’s situation, referral for additional counseling or therapy may be suggested.

Background and credentials

Dr. Munoz is a board-eligible adult psychiatrist. He earned his medical degree from Rutgers, New Jersey Medical School and completed his psychiatric residency at Mount Sinai Beth Israel. Throughout his training, he gained experience in a variety of clinical settings, including outpatient and inpatient care, as well as psychiatric emergency services.

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Treatment approach

Dr. Munoz provides compassionate psychiatric care through a combination of pharmacotherapy and supportive therapy. He specializes in treating depression, anxiety, bipolar disorder, and psychotic disorders. He has extensive experience working with LGBTQ+ and Spanish-speaking communities. His treatment philosophy is holistic, viewing patients as whole individuals and addressing their specific needs at different stages of life. He also emphasizes the importance of exercise, relationships, and overall well-being in his approach to mental health care.

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What you can expect in a first visit

During the first visit, patients can expect a comprehensive and patient-centered evaluation. Dr. Munoz takes the time to understand each patient’s symptoms, background, and personal goals. He collaborates with patients to develop an individualized treatment plan that may include medication management, supportive therapy, and lifestyle modifications to support their overall well-being.

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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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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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Dr. Jonathan Bui is an MD who earned his medical degree from the University of Maryland, School of Medicine, and completed his residency at Walter Reed National Military Medical Center. He served as a military psychiatrist for eight years, including deployment to Iraq, and was honorably discharged as a Major. He has experience in both outpatient and inpatient care, with a strong focus on compassionate, patient-centered treatment.

Dr. Bui creates a welcoming and supportive environment where patients feel heard and understood. He collaborates with patients to set achievable treatment goals and draws on extensive experience in treating a variety of mental illnesses, including post-traumatic stress disorder, to ensure the best outcomes.

Dr. Bui begins by thoroughly reviewing a patient’s history to understand their background and concerns, helping to establish meaningful treatment goals. At follow-up appointments, he reviews progress, addresses any new issues, and adjusts care plans collaboratively to support long-term mental health and well-being.

Dr. Kat Atadjanova is a board-certified psychiatrist dedicated to providing holistic and compassionate care for individuals navigating mental health challenges. She earned her MD from Tulane University School of Medicine and completed a combined residency in Internal Medicine and Psychiatry at Tulane. With experience in both fields, she is especially comfortable caring for patients with medical comorbidities and takes an integrative approach to treatment.

Dr. Atadjanova values collaboration and believes that treatment works best when patients are active participants in their own care. She is committed to creating a safe, supportive environment where patients feel heard and respected. Her approach combines evidence-based medication management with psychotherapy and lifestyle guidance, tailoring each treatment plan to the unique needs and goals of the individual.

In her work, Dr. Atadjanova begins by taking time to understand a patient’s history, strengths, and challenges. From there, she develops a personalized plan that may include medication, therapy, or supportive interventions. She emphasizes shared decision-making, patient education, and holistic strategies—such as nutrition, exercise, and sleep hygiene—to help patients achieve sustainable improvements in their mental health and overall well-being.