Gaurav Agarwal, MD

Dr. Roxanne McClung is completing her General Psychiatry Residency at the University of Texas Health Science Center at Tyler, where she serves as Chief Resident. She earned her MD from the American University of the Caribbean and holds a Master of Science in Clinical Psychology from the University of Texas at Tyler and a BA in Psychology from Southern Methodist University. With over 20 years of experience in mental health, she has worked as a case manager, psychotherapist, and program/clinical director.

Dr. McClung is passionate about helping people through life’s challenges. She creates a non-judgmental, patient-centered environment that fosters open communication and collaboration. She emphasizes individualized care and integrates lifestyle medicine and psychotherapy, primarily using Cognitive Behavioral Therapy and Cognitive Processing Therapy.

Dr. McClung begins with a thorough assessment to understand each patient’s history, concerns, and goals. She works collaboratively to create a personalized treatment plan that may include medication and evidence-based therapy. Her approach ensures clarity, respect, and patient involvement throughout the process.

Dr. Viga Naik takes a holistic approach when practicing, understanding the importance of an integrative treatment care model. She believes optimal patient care goes beyond psychopharmacology and requires incorporation of psychotherapy and psychosocial intervention. She is a strong advocate for her patients, dedicated to being an educator of mental illness to break self, societal, and systemic stigmas. She believes that a strong therapeutic alliance between clinician and patient is essential. She works on creating a safe and empathetic environment while providing psychoeducation to patients, empowering them to play an active role in their treatment. Dr. Naik is an adult psychiatrist with specializations in Addiction Psychiatry and Consultation-Liaison Psychiatry, also known as psychosomatic medicine. She completed her residency training at New York Medical College and fellowship training at the Mount Sinai Health Systems located at Bronx Care and Beth Israel Hospital. She has worked in both inpatient and many outpatient specialty clinics such as psych/oncology, transplant, collaborative-care, medication assistance treatment, music and medicine, and gender affirmation surgery treating patients with comorbid mental illness and substance use disorders as well as comorbid mental illness and general medical conditions. Her practice focuses on medication management in combination with supportive therapy and providing psychoeducation to patients. She treats depression, anxiety, bipolar disorder, obsessive compulsive disorder, post-traumatic stress disorder, general anxiety disorder, substance use disorders and other associated psychiatric disorders.

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.‍

Serena Mirchandani is a board-certified psychiatric nurse practitioner with extensive experience treating serious mental illnesses such as bipolar disorder and schizophrenia spectrum disorders. She also provides care for individuals with depression, anxiety, PTSD, OCD, autism spectrum disorder, and substance use disorders. Serena earned both a Master of Science in Nursing and a Doctorate in Nursing Practice in psychiatry from Columbia University. She completed a Nurse Practitioner Fellowship at Community Healthcare Network and worked at Bellevue Hospital for 2.5 years, providing care on an inpatient psychiatric unit for a diverse, underserved population.

Serena’s approach is grounded in open communication, evidence-based care, and deep respect for each patient’s lived experience. She prioritizes a collaborative, safe space where individuals feel heard, respected, and empowered. Her holistic style supports honest conversation, transparency in treatment options, and patient-centered goals.

Serena begins with a comprehensive assessment to understand each patient's full story—biological, psychological, and social. She then partners with patients to develop personalized, evidence-based treatment plans that align with their values and goals. She emphasizes education, transparency, and regular follow-up to support ongoing progress and informed decision-making.

Dr. Catherine Shim is a board-certified psychiatrist and completed her training at the University of Washington, where she received additional certifications in Psychotherapy and Community Psychiatry.  Prior to joining Talkiatry, she spent years serving the mental health needs of underserved communities as well as our Veteran population.  Dr. Cat is excited to bring that same dedication and selfless service to her Talkiatry patients!

Dr. Cat is experienced in managing a multitude of mental health conditions, but her specialty is providing behaviorally oriented trauma-informed care.  Her approach is to treat primarily through psychotherapy and behavioral change, with medication management serving as an important (and often essential) adjuvant to optimizing mental health.

Dr. Cat tends to have a very casual engagement style, so expect a frank but open conversation during your first meetings with her.  Following that initial screening, anticipate a candid discussion about her approach to your condition and an initial treatment plan.  Please feel free to bring up any questions or concerns at any time during this process, and note-taking is highly encouraged!

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Dr. Lundgren is a board-eligible adult psychiatrist who completed his residency at the University of Rochester. During his final year, he served as Chief Resident in both inpatient and emergency psychiatry, demonstrating leadership and clinical excellence in high-acuity settings.

Before beginning his medical journey, Dr. Lundgren earned a degree in philosophy from the University of Georgia. He went on to serve as a police officer and investigator near Atlanta, Georgia, for six years. These formative experiences gave him unique insight into the complex relationship between mental health and personal well-being, safety, and fulfillment. Motivated by this perspective, he pursued a degree in neuroscience at Columbia University, graduating with honors, before attending medical school.

Dr. Lundgren brings experience across outpatient, inpatient, and emergency psychiatric care. He emphasizes a strong therapeutic alliance, supportive psychotherapy, and evidence-based treatment. He is committed to understanding people within the context of their experiences and circumstances, recognizing how these factors may contribute to their mental health concerns and strengths.

Dr. Lundgren provides comprehensive psychiatric medication management and cares for individuals experiencing depression, anxiety, trauma-related disorders, and other mental health conditions. When beneficial, he may also recommend collaborating with a therapist to support a more holistic and effective treatment plan.

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