Cheryl Dasler, MD

Dr. Thomas O’Brien holds a Bachelor of Science degree from the University of Wisconsin–Madison and earned his medical degree from Midwestern University Chicago College of Osteopathic Medicine. He completed his psychiatry residency at Loyola University Medical Center. Dr. O’Brien has experience practicing across outpatient, PHP, IOP, and inpatient settings.

He strives to create a supportive environment where patients feel heard, respected, and understood. His approach emphasizes a holistic, whole-person method to healing, guided by the patient’s own goals and values. Dr. O’Brien integrates psychotherapy with medication management, drawing on his background in psychodynamic psychopharmacology and acceptance and commitment therapy.

Dr. O’Brien focuses on understanding each patient as a whole to create individualized treatment plans. This begins with a comprehensive history during the initial session to identify biopsychosocial factors. Treatment is then tailored to align with the patient’s unique goals and values, promoting meaningful progress.

Background and credentials

Dr. Sonal Harneja is a board-certified adult psychiatrist specializing in medication management and psychotherapy for anxiety and depressive disorders. She earned her undergraduate degree from Stony Brook University and her medical degree from the University at Buffalo School of Medicine and Biomedical Sciences (now called the Jacobs School of Medicine and Biomedical Sciences). She completed her adult psychiatry residency at Montefiore Medical Center/Albert Einstein College of Medicine. Dr. Harneja has held academic appointments at New York Presbyterian/Weill Cornell Medical College and Montefiore Medical Center/Albert Einstein College of Medicine, providing collaborative and client-centered psychiatric care.

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Treatment approach

Dr. Harneja specializes in medication management and supportive psychotherapy, with a strong emphasis on promoting well-being, resilience, and mindfulness. She works closely with patients to develop individualized treatment plans, ensuring that care is collaborative and patient-centered. Follow-up visits typically last 30 minutes, during which she evaluates treatment progress and adjusts care as needed. If additional therapy is beneficial, she may recommend working with a therapist as part of a comprehensive treatment approach.

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What you can expect in a first visit

During the first visit, patients can expect a thorough psychiatric evaluation, where Dr. Harneja takes time to understand their symptoms, medical history, and treatment goals. She prioritizes open communication and trust, working collaboratively to create a personalized care plan that aligns with the patient’s mental health needs. Whether through medication management, therapy, or mindfulness techniques, she aims to foster long-term well-being and emotional resilience.

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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. Alexandre Cupler is a board-certified psychiatrist who began his career in community mental health in 2014, working as a counselor in psychiatric rehabilitation facilities. Since then, he has gained experience across inpatient hospitals, outpatient clinics, and residential treatment settings. Dr. Cupler earned his medical degree from Rush Medical College and completed his psychiatry residency at Chicago Medical School.

Dr. Cupler takes a patient-centered approach to care, making it a priority to ensure that each patient’s concerns are genuinely heard. He strives to create a culturally sensitive, non-judgmental, and safe environment where patients feel comfortable discussing difficult topics and working collaboratively toward their goals.

Initial sessions with Dr. Cupler focus on understanding the patient’s primary concerns, history, and treatment goals. He tailors care to each individual's preferred treatment style and ensures patients are informed about their treatment plan so they know what to expect and can take an active role in their care.

Dr. Nathan Schulz attended the Ohio State University College of Medicine where he received his degree before completing a residency in psychiatry at the University of Illinois, Chicago. After several years working with veterans at the Jesse Brown VA in Chicago, he returned to his home state of Iowa in 2022. Since then, he has continued to work with a wide variety of clients and conditions in both inpatient and outpatient settings, including at the University of Iowa and Clive Behavioral Health hospital.

Dr. Schulz values open, honest, and ongoing dialogue about how mental health treatment can improve wellbeing and lead to healing. Over time, he tailors treatment recommendations based on individual needs, which may include medication, therapy, lifestyle changes, or other approaches. He avoids a one-size-fits-all model and creates an environment where patients feel respected, understood, and supported as unique individuals.

In the first meeting, Dr. Schulz works to understand each patient’s goals, experiences, and preferences. Some arrive knowing what they want, while others are new to exploring mental health challenges. His goal is to meet patients where they are and adjust treatment focus as needs evolve. He emphasizes collaborative decision-making, clearly discussing treatment options, pros and cons, and next steps, while ensuring patients feel informed and empowered throughout care.

Jackie LaVe' is a board certified Psychiatric Mental Health Nurse Practitioner. She is also dually certified as a Family Nurse Practitioner. She received her master’s degree and post-master’s certificate from Vanderbilt University. Jackie has 12 years of experience as a nurse and over 7.5 years of experience as a Nurse Practitioner. Jackie is licensed to practice in Montana, Arizona and New York.

Jackie LaVe’ offers a patient centered approach, working with individuals aged 18-65. She believes in engaging patients in the decision-making process. Jackie has professional interests in treating a wide range of adult psychiatric conditions including depression, anxiety, trauma, ADHD, OCD, panic, autism and bipolar disorder.

She provides psychiatric assessments and medication management along with brief supportive psychotherapy. She believes in educating patients, so they are empowered to work together to create treatment plans that improve their health and quality of life. Jackie has additional education and experience in cognitive behavioral therapy, mindfulness and motivational enhancement. Jackie can also review if adding a therapist to your care team could improve outcomes.

Dr. Peppers works with patients to meet the goals that matter to them. She believes that feeling heard and being understood are key factors in a successful treatment relationship.

She has been working in telehealth since 2018. She has worked extensively with patients dealing with trauma from childhood abuse, assaults, combat, and accidents. She also has a lot of experience treating depression, anxiety disorders, bipolar disorder, ADHD, and personality disorders.

After completing her training, Dr. Peppers worked in private practice and in various roles for the Department of Veterans Affairs. She most enjoys working in the clinic because of the long term follow-up.        

Dr. Peppers enjoys her work and includes psychotherapy in her appointments. She offers medication options to treat symptoms but also works with patients to examine behaviors and defenses that may be contributing to their problems. For patients who would benefit from more extensive psychotherapy, she may refer patients to a therapist and work collaboratively with the therapist.

She starts off with a thorough evaluation to make a diagnosis. Then, she works with patients to determine what their treatment goals are and develops a treatment plan to meet those goals.