Vandana Kethini, MD

Background and credentials

Dr. Diane Lewis is board-certified in general psychiatry by the American Board of Psychiatry and Neurology. She earned both her undergraduate and medical degrees at Texas A&M University (College Station and Temple, TX) before completing her general psychiatry residency at UT Southwestern - Austin Programs (now Dell Medical School residency programs). After her residency, she practiced for eight years as a staff psychiatrist at the University of Texas' student counseling center. She also has experience working in hospital admissions and emergency department settings.

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Treatment approach

Dr. Lewis employs a medication-management-focused approach typically paired with supportive therapy during 30-minute follow-up visits. She strongly values a collaborative treatment approach, frequently encouraging patients to incorporate additional therapy for the best outcomes. Her primary specialty is college mental health, treating patients aged 18-45 with a range of mental health conditions from mild to complex. Dr. Lewis emphasizes authenticity, compassion, and recognizing patients beyond their diagnoses, providing care tailored to individual circumstances and goals.

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What you can expect in a first visit

During a first visit, patients can expect Dr. Lewis to conduct a thorough evaluation, carefully listening to their concerns, and considering their symptoms within the broader context of their lives. Her patients appreciate her down-to-earth and compassionate communication style. She aims to create an environment where patients feel understood, respected, and actively involved in shaping their personalized treatment plan, often recommending additional therapy support when beneficial for achieving optimal outcomes.

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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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Wayne R. McIntosh, PMHNP-BC, is a dedicated mental health professional with over a decade of experience in psychiatric care. He earned his advanced nursing degree with distinction from Arizona State University and also holds a Bachelor of Science in Nursing from Grand Canyon University and an Associate of Science in Nursing from Harry S. Truman College. He has been a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) since 2015.

Wayne specializes in family-centered care, working with individuals aged 18 to 65. Whether supporting patients through anxiety, depression, ADHD, or life transitions, he develops personalized diagnostic and treatment plans that may include therapy, coping strategies, and, when appropriate, medication. His approach emphasizes clear communication and collaboration, empowering patients to understand their challenges, apply practical tools, and achieve lasting change.

Throughout his career, Wayne has served as a Psychiatric Nurse Practitioner and Associate Director of Medical Services, leading multidisciplinary teams and promoting accessible, high-quality care. As a Faculty Associate at Arizona State University, he has mentored future nurse leaders, focusing on clinical excellence and patient advocacy. His military background and volunteer work further reflect his commitment to serving diverse populations with compassion and respect.

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Dr. Cyndia Choi has been board certified in psychiatry since 1991. She has 30 years of experience treating a diverse population of cultures, LGBTQ issues, and different age groups from young adults to seniors. After attending Johns Hopkins University in Baltimore for her bachelor's degree, Dr. Choi received her medical degree from The University of Medicine and Dentistry of New Jersey at Rutgers Medical School. She went on to complete a general medical internship at Hahnemann University Hospital in Philadelphia and then her Psychiatric residency at the University of Pennsylvania .Dr. Choi has treated patients who have had a broad spectrum of diagnoses including major depressive disorder, post-traumatic stress, bipolar disorder, OCD, panic and anxiety, and addiction. Although the majority of her work has been in outpatient care, Dr. Choi has worked in emergency settings, inpatient units, and as a consultation-liaison to medical units. She has also enjoyed the honor of working with US military veterans. Dr. Choi's specialty is medication management, however, she believes that a therapeutic relationship is crucial to treatment. Dr. Choi values the privilege of getting to know each patient personally to develop a patient-centered plan of care.‍Typical follow-up appointments with Dr. Choi are 30 minutes in length to check on medication effects and for supportive therapy. If she believes that you may benefit from more in-depth therapy, she may recommend adding a therapist to your treatment team. Dr. Choi also believes in a holistic approach toward helping you achieve a healthy and fulfilling quality of life.

Dr Marc Whaley is a Board Certified Psychiatrist in Adult Psychiatry, with extensive clinical experience over the past 50 years, mostly in outpatient treatment, and some in-patient settings, in addition to Forensic (legal) ones. He received his undergraduate degree at Johns Hopkins in Baltimore and his medical degree at Tufts Medical School in Boston, and then went on to train at Tufts New England Medical Center in Boston, for his psychiatry residency. He has held leadership roles, Chief of Department of Psychiatry in a community hospital, President of the local Psychiatric Chapter of the Massachusetts Psychiatric Society, and founder of a private group outpatient psychiatric practice on Cape Cod called The Psychiatric Collaborative. In 2018, he closed his private practice, seeking more free time in the later years. It did not take long, however, to get back to active practice, first by reviewing files for insurers around the issue of medical necessity, disability, and other psychiatric determinations. He got his first experience in Telepsychiatry when working remotely for a community hospital, far from his home, evaluating patients presenting to their busy ER; He experienced this as a practical and efficient way of delivering psychiatric services. When that contract ended after 3.5 years, he learned about and joined Talkiatry to work as a Staff Psychiatrist, in their well-organized comprehensive program. Dr. Whaley has been recognized by his peers for his career achievement, and he was the 2022 recipient of the Outstanding Psychiatrist Award for Clinical Psychiatry from the MA Psychiatric Society. He has also been a regular panel member, over the past 13 years, for a monthly NPR Radio Talk Show, ( WGBH Cape Cod affiliate, WCAI), The Point with Mindy Todd, focusing on multiple mental health topics.

Steven Warren, PMHNP, has over 25 years of psychiatric nursing experience in both inpatient and outpatient settings. He has provided extensive individual and group psychotherapy and education, and since 2017, has offered medication management and brief therapy in a collaborative community mental health setting. Steven earned his Bachelor of Nursing in 2011 and Master of Nursing in 2017 from Indiana University, and is ANCC board-certified as a Psychiatric Mental Health Nurse Practitioner.

Steven values open and honest communication, working directly with patients to set clear, achievable treatment goals. He is dedicated to ensuring each person he works with feels heard, respected, and supported throughout their mental health journey. His approach emphasizes collaboration, empathy, and trust.

During the first session, Steven takes time to understand each patient’s history, concerns, and goals. He develops individualized treatment plans that reflect patient values, adapting them as needs evolve. Through a strong therapeutic relationship, he provides guidance and support to help patients achieve meaningful and lasting progress.

Dr. Jackie Long is an adult psychiatrist who recently completed her residency at the Institute of Living. During her training, she received extensive training caring for a diverse patient population in a variety of settings including emergency, inpatient, partial hospitalization, and outpatient settings.

Dr. Long blends clinical expertise with a holistic, thoughtful approach individually tailored to each patient’s needs. At the core of Dr. Long’s approach is a belief that healing is most effective when it is collaborative, personalized, and grounded in a strong therapeutic relationship.

Dr. Long provides medication management combined with supportive therapy. She treats a variety of patients with a focus in mood and anxiety disorders and has a clinical interest in cross cultural psychiatry.

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