Philip Sullivan, MD

Jennifer Hewitt is a board-certified psychiatric nurse practitioner, credentialed through the American Nurses Credentialing Center (ANCC). She earned her master’s degree in nursing from Gonzaga University and has extensive experience treating a wide range of mental health conditions, including anxiety, depression, obsessive-compulsive disorder (OCD), bipolar disorder, schizophrenia, and post-traumatic stress disorder (PTSD).

Her passion for psychiatry and dedication to patient care are rooted in her background as an emergency room nurse and her experience in emergency medical services (EMS). This foundation has given her a unique perspective on the critical role mental health plays in overall well-being.

Jennifer provides compassionate care to adults, children, and adolescents, recognizing that each individual’s path to mental wellness is unique. She believes that while medication can be an important part of treatment, self-care and therapy are equally essential components of a holistic approach.

She is known for her empathetic listening and genuine connection with patients. Through collaboration, she helps individuals set realistic goals and empowers them to take an active role in their recovery. Her kindness and commitment create a supportive environment where patients can thrive on their journey toward mental wellness

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Background and credentials

Dr. Shama Milon is a triple-board eligible physician in Pediatrics, Psychiatry, and Child and Adolescent Psychiatry. She earned her undergraduate degree from Duke University and her medical degree from the University of Cincinnati College of Medicine. She completed her combined training in Pediatrics, Psychiatry, and Child and Adolescent Psychiatry at the Icahn School of Medicine at Mount Sinai in New York, where she served as chief resident during her final year of training.

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Treatment approach

Dr. Milon specializes in treating mood disorders, anxiety, PTSD, ADHD, OCD, and patients with co-occurring psychiatric and medical conditions. She is dedicated to outpatient care, focusing on long-term relationships with her patients. Her treatment approach is comprehensive, integrating medication management with psychotherapy, including psychodynamic psychotherapy, cognitive-behavioral therapy (CBT), dialectical behavior therapy (DBT), play therapy, dyadic therapy, and family therapy. She emphasizes creating an empathetic, judgment-free space where patients and families feel supported and understood. If she believes additional therapy is necessary, she may recommend adding a therapist to the care team.

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What you can expect in a first visit

During the first visit, patients can expect a comprehensive psychiatric evaluation, where Dr. Milon carefully assesses physical, emotional, and psychological needs. She takes a holistic and patient-centered approach, ensuring that treatment plans are tailored to each individual’s unique circumstances. She prioritizes open communication and collaboration with both patients and families to create a structured, effective treatment plan that may include medication management and therapy interventions.

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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. Sahadevan took an adventurous path to Talkiatry. After perhaps thinking a little too hard about Intro to Philosophy in college - "the unexamined life is not worth living” - he first used his chemistry degree to work in pharmaceutical research. He changed course, working in computer network engineering, before deciding to find a more meaningful path. He worked as an EMT, then earned a Master's in Physiology before finally landing in medical school at Ohio State. Finding a surprising interest in psychiatry, he stayed at Ohio State for residency, and then a fellowship in forensic psychiatry. He is board-certified in both Psychiatry and Forensic Psychiatry. He previously worked as a forensic psychiatrist and evaluator at Ohio's maximum-security state psychiatric facility, as an attending psychiatrist running an inpatient unit for violent or dangerous patients, performing court-ordered evaluations, writing reports, and testifying when necessary. Dr. Sahadevan has also worked as a consultation-liaison psychiatrist, performing psychiatric consults at several general hospitals in Central Ohio's largest hospital system. He found great enjoyment in teaching successive generations of residents and medical students, serving as an adjunct faculty member at Ohio State, Ohio University, Wright State, and OhioHealth Riverside Methodist Hospital. He is excited for the next chapter of his journey, exploring another area of psychiatry at Talkiatry!

Laura Cunningham, LCSW, has over four years of experience treating eating disorders in a hospital setting. She earned her Master of Social Work degree from Fordham University and is certified in Level 1 Gottman Method. Laura integrates evidence-based approaches, including Cognitive Behavioral Therapy (CBT) and Dialectical Behavior Therapy (DBT), into her clinical work.

Laura’s therapeutic style is warm, personable, and conversational—like talking to a trusted friend. She creates a safe, supportive environment where patients feel heard and understood. Laura validates emotions while encouraging meaningful growth and self-discovery.

Laura begins by thoroughly exploring each client’s background and therapy goals. From there, she collaborates with the individual to develop a personalized, comprehensive treatment plan tailored to their needs, supporting long-term change and emotional well-being.

Melissa Sims, MSN, APRN, PMHNP-BC, is a board-certified psychiatric mental health nurse practitioner who is passionate about delivering high-quality, compassionate, and comprehensive mental health care. She earned her Master of Science in Nursing from the University of Alabama at Birmingham in 2022 and has since worked in both community mental health and correctional settings.

Melissa takes a collaborative approach to care, working closely with other mental health professionals, medical providers, families, and relevant support systems to ensure well-rounded treatment. She emphasizes a patient-centered, individualized approach, combining medication management with psychotherapy to meet each person’s unique needs.

Patients working with Melissa can expect a thorough evaluation, accurate diagnosis, and a personalized treatment plan tailored to their mental health goals. One of her core priorities is to empower individuals to make informed decisions about their care by providing education grounded in research, evidence-based practices, and clinical experience.

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Dr. Joshua Riederman is a board-certified psychiatrist with a specialization in the treatment of adults aged 18 to 65. Dr. Riederman obtained his undergraduate degree in brain, cognition, and neuroscience from the University of Michigan in Ann Arbor. He subsequently attended medical school at Nova Southeastern University in Fort Lauderdale, Florida, and completed his residency training at JFK Hospital in Palm Beach, Florida.

Dr. Riederman places a strong emphasis on establishing meaningful relationships with his patients and supporting them in achieving their individual life goals through effective treatment. He actively incorporates patient preferences into all treatment plans and integrates psychotherapy with medication management. Dr. Riederman recognizes the importance of educating patients about their care and dedicates time during each appointment to address any questions or concerns they may have.

In his clinical practice, Dr. Riederman begins by facilitating an open dialogue with patients regarding their primary concerns for the appointment. During initial consultations, he conducts a comprehensive assessment, which includes gathering relevant medical, familial, and social histories that may influence the course of treatment. In subsequent appointments, Dr. Riederman engages patients by inquiring about developments that have occurred since their last visit, as well as any issues related to medications or significant life events.

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