Mahsa Mousavi, MD

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. Sharon Kahler is Board Certified in Adult and Child & Adolescent Psychiatry and treats patients of all ages. She has over a decade of experience in both community mental health centers and private practice, working with individuals from diverse backgrounds. She earned her medical degree from New York Medical College, completed Adult Psychiatry Residency at New York-Presbyterian/Weill Cornell, and completed Child and Adolescent Fellowship training at NYU Langone and Bellevue Hospital. Her clinical interests include mood and anxiety disorders, PTSD, and childhood psychiatric disorders.

Dr. Kahler is committed to providing compassionate, high-quality mental health care. She fosters a therapeutic, nonjudgmental environment where patients can openly share their concerns and values. Viewing treatment as a partnership, she encourages patients to play an active role in their care and takes a whole-person approach, considering lifestyle, environmental, and social factors that contribute to healing.

Dr. Kahler begins with a comprehensive assessment to understand each patient’s history, background, and treatment priorities. She develops individualized treatment plans using evidence-based approaches, supporting patients in navigating life’s challenges and finding a path to mental wellness.

Dr. Jessica Marz is a board-certified psychiatrist who completed her undergraduate studies at the University of Florida and earned her medical degree from the Florida State University College of Medicine. She went on to complete her psychiatry residency at the University of Florida College of Medicine Jacksonville. Dr. Marz treats adults experiencing a variety of mental health concerns, including anxiety, depression, PTSD, OCD, ADHD, bipolar disorder, and adjustment-related challenges.

Dr. Marz is a compassionate and thoughtful psychiatrist committed to holistic, patient-centered, evidence-based care. She approaches each individual with warmth and without judgment, fostering a therapeutic environment built on open communication and trust. She believes that strong rapport is essential to achieving meaningful progress in treatment.

Dr. Marz combines medication management with supportive psychotherapy, incorporating cognitive-behavioral techniques and motivational interviewing. She customizes each treatment plan to align with the patient’s personal goals and evolving needs, recognizing that healing is a highly individualized journey.

Background and credentials

Dr. Puja Kumar is trained in adult, child, and adolescent psychiatry and is a board-certified pediatrician. She earned her Bachelor of Science from the University of Calgary and her medical degree from St. George’s University in Grenada. She completed her pediatrics residency at Maimonides Medical Center in New York and practiced pediatrics with MedStar Shah Medical Group in Maryland before transitioning to psychiatry. She later trained in child and adult psychiatry at University Hospitals Cleveland Medical Center.

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Treatment approach

Dr. Kumar provides medication management combined with supportive therapy, typically in 30-minute follow-up visits. She takes a holistic approach to treatment, considering the impact of lifestyle, parenting practices, and family dynamics on mental health. She emphasizes integrative care, ensuring that treatment plans are tailored to each patient’s unique needs and circumstances.

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What you can expect in a first visit

During the first visit, patients can expect a thorough and compassionate evaluation, where Dr. Kumar takes time to understand their symptoms, medical history, and environmental influences. She prioritizes collaborative decision-making, working closely with patients and, when applicable, their families, to develop a comprehensive and personalized treatment plan. Follow-up visits typically focus on medication adjustments, supportive therapy, and lifestyle recommendations to optimize mental health 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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Dr. Theresa Colberg is a board certified adult psychiatrist. She offers guidance with navigating difficult and painful emotions that may result from stressful life situations, such as the loss of or separation from a loved one, work related stressors, burn out, adult and childhood trauma, OCD and mood disorders including major depressive disorder, bipolar disorder, and various anxiety disorders. Within a safe, and supportive working relationship, Dr. Colberg will strive to reach an understanding of your unique situation, identify the issues that are interfering with progress, and develop a plan to better identify and achieve your goals.

Previous to joining Talkiatry, Dr. Colberg served as a clinical psychiatrist for the VA Healthcare System, providing care for veterans with a predominant focus on treatment of post traumatic stress disorder. She has also worked collaboratively as an integrated psychiatrist for a primary care FQHC, treating primarily trauma and stressor related disorders within a primary care setting.

Dr. Colberg completed her Psychiatry Residency from Mount Sinai-Beth Israel in New York City and obtained her medical degree from Temple Medical School in Philadelphia. She offers 60-minute initial appointments and 30-minute follow-up appointments, and she won't hesitate to collaborate with other mental health experts as necessary to better support your needs.

Lauren is a board-certified Psychiatric Mental Health Nurse Practitioner (PMHNP-BC) who earned her Master of Science in Nursing from Kent State University in 2020. She has experience treating a wide range of mental health conditions, including depression, anxiety, psychotic disorders, bipolar disorder, ADHD, OCD, PTSD, and substance use disorders.

Lauren’s approach combines medication management with psychotherapy to create a well-rounded, individualized treatment plan. She takes time to listen to her patients’ concerns, fostering a safe and open environment for dialogue. Her therapeutic methods include supportive therapy, motivational interviewing, and cognitive behavioral therapy. Recognizing that medication alone may not fully address the root causes of distress, she incorporates talk therapy, lifestyle changes, stress management, self-care strategies, supplements, and social health into her care plans.

With a laid-back, non-judgmental, and empathetic style, Lauren collaborates closely with patients to ensure their treatment aligns with their unique needs and goals. Every decision is grounded in evidence-based practices and patient-centered care.

Lauren begins with a comprehensive initial assessment, gathering detailed information about each patient’s mental and physical health history, lifestyle, symptoms, concerns, and goals. This assessment informs a potential diagnosis and serves as the foundation for a personalized treatment plan. Regular follow-up appointments are scheduled to monitor progress, make adjustments as needed, and provide ongoing support.

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