Divya Khosla, MD

Background and credentials

Dr. John Whittier is a board-certified psychiatrist. He earned his Bachelor of Arts in Molecular, Cellular, and Developmental Biology from the University of Colorado at Boulder and went on to obtain a master’s degree in Medical Science from Loyola University Chicago. He completed his medical training at the Robert Larner, M.D. College of Medicine at The University of Vermont and returned to Colorado for his psychiatry residency at the University of Colorado School of Medicine. While in residency, he specialized in the Psychotherapy Scholars Program and has since gained four years of experience treating psychiatric conditions through telehealth.

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Treatment approach

Dr. Whittier primarily focuses on medication management for general psychiatric conditions. His approach is individualized, ensuring that each patient receives a treatment plan tailored to their unique needs. He integrates supportive therapy, medications, and evidence-based alternative therapies to provide a flexible and comprehensive approach. In addition to his general practice, he maintains a psychodynamic psychotherapy panel where he helps patients explore developmental and relational patterns that contribute to their symptoms. His specialties include treating depression, anxiety, adjustment disorders, PTSD, insomnia, bipolar disorder, and ADHD.

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What you can expect in a first visit

During the first visit, patients can expect a one-hour comprehensive intake during which Dr. Whittier thoroughly evaluates their symptoms, medical history, and personal goals. He provides treatment options that prioritize flexibility, allowing patients to take an active role in their care. Follow-up visits typically last 20 to 30 minutes, focusing on assessing treatment progress and making necessary adjustments. For those engaged in psychodynamic psychotherapy, longer one-hour sessions are available for in-depth exploration of underlying psychological patterns.

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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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Dr. Onah Uwagbai is a board-certified psychiatrist who earned her medical degree from St. George’s University School of Medicine. She completed her psychiatry residency at the University of Kansas Medical Center, where she served as Chief Resident at the Kansas City VA hospital and was recognized for Excellence in Scholarship. Most recently, she worked at the North Texas VA Healthcare System, caring for individuals with treatment-resistant depression and complex psychiatric needs.

Dr. Uwagbai has a passion for supporting individuals with mood disorders, anxiety, trauma, and women’s mental health. She believes healing is best achieved through compassion, collaboration, and respect. Patients can expect a warm, supportive environment where they feel heard and understood, with treatment tailored to their unique history and goals.

Dr. Uwagbai begins with a comprehensive evaluation to understand each patient’s needs and then develops an individualized treatment plan. She draws on evidence-based practices, including expertise in complex cases, and may incorporate both therapy and medication management. Her goal is to empower patients to take an active role in their care while fostering resilience, stability, and long-term wellness.

Dr. Seth Sherman is a board-certified adult psychiatrist who has been in practice for over ten years. At the heart of Dr. Sherman's clinical approach is a strong emphasis on establishing trust, rapport, and therapeutic alliance to help persons to feel and live well and to progress toward their goals, both in treatment and in life. Dr. Sherman begins with consultation, a compassionate, collaborative process of discovery that culminates in a working diagnostic impression and, in turn, treatment recommendations. For those with whom he engages in a treatment relationship, Dr. Sherman provides psychoeducation, medication management, and individual psychotherapy, this last modality predominantly drawing from both psychodynamic and behavioral psychological models to tailor treatment to each patient. On some occasions, Dr. Sherman may believe that additional therapy is needed and ask that you bring a therapist into your care team to provide the best outcome. Dr. Sherman received his medical degree from Stanford University and went on to complete his residency in psychiatry at Harvard University. After completing training, he cultivated a private practice of psychiatry in San Francisco, California, treating persons with a variety of psychiatric illnesses, while also providing consultation and clinical supervision to psychotherapists in day-treatment and office-based practices. Next, Dr. Sherman served as a psychiatry professor at the Florida Atlantic University Charles E. Schmidt College of Medicine in Florida, where, as Associate Director of the Psychiatry Residency Training Program, he provided psychiatric inpatient treatment while bringing leadership, scholarship, teaching, supervision, and mentoring to psychiatry residents and medical students. Most recently, Dr. Sherman worked as a senior medical officer/consultant psychiatrist in New Zealand's public health system, serving local communities with expert diagnosis and treatment for a wide range of mental health conditions. He also continued to supervise U.S.-based psychiatrists, along with New Zealand psychotherapists, in advanced and complex clinical psychopharmacology and psychotherapy.

Dr. Kevin Lu is a board certified adult psychiatrist. In addition to medication management, he integrates elements of psychotherapy, psychoeducation, lifestyle changes, and relationship skills into his approach. He enjoys working with a variety of individuals and conditions, with particular experience with veterans, immigrants, and university students. He has a friendly and casual style, and prioritizes strong therapeutic relationships in his work. Dr. Lu completed his undergraduate studies at New York University's Stern School of Business, and after a short career in finance, he made a transition into medicine. He received his medical degree from the Zucker School of Medicine at Hofstra/Northwell, and completed residency training in psychiatry at the University of Arizona in Tucson.

Suzann Gordon, DNP is a board certified psychiatric mental health nurse practitioner who graduated with her Doctor in Nursing Practice from the University of Nevada Reno. Her years of experience in the mental health field began when she became a behavioral health counselor working with adolescents, then as a psychiatric nurse working with patients across the life span. She's worked in various healthcare settings including pediatric and adolescent residential treatment, acute inpatient care and outpatient as a nurse case manager on the Assertive Community Treatment (ACT) Team for the state hospital.

Since Suzann has become a psychiatric mental health nurse practitioner, she has worked in community health clinics providing both psychiatric medication management and medication-assisted treatment to patients. She has treated patients with various diagnoses including anxiety, depression, post-traumatic stress disorders, obsessive compulsive disorders, bipolar disorders, schizoaffective disorders, schizophrenias, alcohol abuse disorder and substance use disorders.

As a nurse practitioner, she believes in focusing on patient-centered care, providing a holistic approach to patient management and having a collaborative approach to mental health treatment. She uses supportive psychotherapy and at times cognitive behavioral therapy to help her patients change their thoughts and behaviors in managing their stressors.

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Background and credentials    

Dr. Alexander Wittenberg is a board-certified adult psychiatrist. He received his undergraduate degree from Cornell University, majoring in Human Biology, Health, and Society. He earned his medical degree from the New York Institute of Technology College of Osteopathic Medicine, where he was a  member of the Psi Sigma Alpha Osteopathic Honor Society. As chief resident at  Mount Sinai Beth Israel, he gained extensive experience working in outpatient  settings and managing patient care at one of New York City's busiest clinics. Dr. Wittenberg has expertise in treating a wide range of mental health conditions, including depressive disorders, anxiety disorders, bipolar disorder, trauma and stressor-related disorders, and OCD.    

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Treatment approach    

Dr. Wittenberg offers highly individualized and empathic treatment, primarily focusing on medication management. He frequently recommends integrating therapy into treatment plans and may suggest collaborating with a therapist. Dr. Wittenberg prioritizes a holistic approach, emphasizing overall well-being alongside symptom relief. He encourages the incorporation of mindfulness, self-compassion, exercise, nutrition, and attention to interpersonal relationships into his treatment strategy.    

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What you can expect in a first visit    

During an initial visit with Dr. Wittenberg, patients can anticipate a collaborative, patient-centered, and non-judgmental environment designed to foster a meaningful therapeutic relationship. He will thoroughly discuss individual concerns and treatment goals, exploring potential therapeutic interventions, including medication management and holistic strategies to support mental health and overall wellness.

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.