America Calderon, LMHC

Nancy Marsh, LCSW, brings over thirty years of clinical experience and an inclusive, relational, insight-oriented approach to therapy. She is deeply committed to supporting individuals from diverse backgrounds and creating a welcoming space where clients feel seen and understood. Nancy integrates CBT, DBT, EFT, MI, ACT, and psychodynamic therapies to foster meaningful, lasting change. She has worked with Holocaust survivors, AIDS patients, and those grieving losses during COVID, as well as individuals facing perinatal stress, traumatic loss, anxiety, depression, ADHD, guiding and supporting folks facing chronic and acute illness, preparing for major surgeries, and major life transitions.

Nancy offers a compassionate, collaborative environment grounded in respect and curiosity. She tailors treatment to each client’s unique history, strengths, and goals, helping them process complex emotions and build resilience. Her relational style encourages self-awareness and empowers clients to navigate relationship challenges, workplace stress, and personal growth with greater clarity and confidence.

Nancy begins with a thorough assessment to understand each client’s story, concerns, and aspirations. Together, they develop clear goals and a personalized treatment plan. Drawing from evidence-based and depth-oriented modalities, she supports clients in developing practical coping tools, gaining insight into patterns, and cultivating sustainable change and renewed hope.

Dr. Kotadia is a board-certified psychiatrist who completed his psychiatry residency training program at Nassau University Medical Center in Long Island, NY. After completing training, he has been practicing outpatient psychiatry and specializes in the evaluation and management of major psychiatric disorders, including depression, and anxiety. He uniquely combines his education, training, and practical experiences into specialized treatment plans. Typically, he offers this in conjunction with supportive or emotionally focused therapy in 30-minute follow-up visits. However, occasionally Dr. Kotadia may believe that additional therapy is also needed and ask that you bring a therapist into your care team to provide the best outcome. A story that Dr. Kotadia came across years back still inspires him each day. A man was taking a morning walk at the beach. He saw that along with the morning tide, came hundreds of starfish. When the tide receded, the starfish were left behind and would die in the morning sun. While the tide was fresh, and the starfish were alive, the man took a few steps, picked one up and threw it into the water and continued throwing starfish back into the ocean. Behind him was a stranger who couldn't understand what this man was doing. He caught up with him and asked, "What are you doing? There are hundreds of starfish. How many can you help? What difference does it make?” The man did not reply, rather he took two more steps, picked up another one, threw it into the water, and said, "It makes a difference to this one.”With this story as his motivation and ultimate objective, it has always been Dr. Kotadia's goal, with each patient, to provide superior services.

Dr. Chelsea Karson is a board-certified psychiatrist who completed her residency training at Advocate Lutheran General Hospital where she was Chief Resident of her program. Dr. Karson is passionate about patient care, believing in caring for the whole person. While completing her residency training, she led an interprofessional team to bring miniature-therapy horses to the inpatient psychiatry unit and thereby forge a relationship between the organization and all of Advocate Aurora Healthcare. Dr. Karson partnered with a mental health counselor to create a virtual therapy program of resources, the Bridge Project, to close the gap between inpatient and outpatient care that is now used throughout the Advocate Aurora network. At graduation Dr. Karson received the 2024 Advocate Lutheran General Hospital Ruggie Humanitarian Award. The Ruggie Award selects and honors a graduating resident or fellow who displays academic excellence, commitment to the education of others, professional bearing, and a concern for the patient within the light of Human Ecology. Dr. Karson attended undergraduate at Elmhurst University, a biology major with minors in chemistry and medical humanities. She went to medical school at Rosalind Franklin University and was chosen to join the Gold Humanism Honor Society for her dedication to compassionate patient care.

Dr. Maria is a Board-Certified Adult Psychiatrist with specialized training in Child and Adolescent Psychiatry. She earned her medical degree from Andes University in Colombia, completed her Psychiatry Residency at The Wright Center in Scranton, Pennsylvania, and pursued further training through a Child and Adolescent Psychiatry fellowship at Louisiana State University in New Orleans.

Dr. Maria is deeply committed to providing kind, thoughtful, and inclusive care. She creates a warm, welcoming space where patients of all ages feel safe, listened to, and truly seen. Her approach blends evidence-based practices with compassion and patient collaboration. She works closely with each patient to understand their unique story and help them move toward meaningful, personal goals.

She takes time to build strong, trusting relationships and conducts thorough evaluations to understand each person’s experiences and needs. Her treatment often includes psycho-education, supportive therapy, and medication management—always shaped by what matters most to the patient.

Dr. Maria has experience treating a wide range of mental health conditions, including ADHD, PTSD, Depression, Anxiety, OCD, and Bipolar Disorder. She is especially passionate about supporting minority and marginalized communities, and she strives to ensure everyone feels valued and cared for.

Dr. Maria practices with a patient centered approach, focusing on each patients unique needs. She practices evidence based medicine with empathy, warmth and in a supportive, nonjudgmental environment.

It is important to Dr. Maria to build trust with patients, so they feel comfortable during their visits. She provides a thorough evaluation to understand symptoms, challenges and personal goals. Dr. Maria conducts visits that incorporate both medication management and psycho-education through supportive therapy. She works with her patients to set clear goals that align with their preferences.

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Background and credentials

Dr. Agarwal is a board-certified adult psychiatrist. He obtained his bachelor's degree in Biological Sciences from the University of California at Irvine and graduated cum laude with his medical degree from the American University of Antigua. Dr. Agarwal completed his psychiatry residency training at the University of Central Florida, where he was elected chief resident.

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Treatment approach

Dr. Agarwal employs a collaborative and patient-centered approach, primarily focusing on medication management in combination with supportive therapy. He is a strong advocate of psychoeducation, believing it to be an integral part of effective psychiatric care. Dr. Agarwal specializes in treating adults experiencing depression, anxiety, PTSD, and insomnia. He is also experienced in managing patients with psychiatric conditions complicated by medical comorbidities such as obesity, hypertension, chronic pain, and diabetes.

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What you can expect in a first visit

Patients visiting Dr. Agarwal for the first time can anticipate a comprehensive evaluation conducted in a collaborative and supportive environment. Dr. Agarwal prioritizes understanding each patient's individual needs and concerns, creating a personalized treatment plan that integrates medication, supportive therapy, and psychoeducation. Follow-up visits typically last about 30 minutes, allowing time to adjust treatment and reinforce therapeutic strategies.

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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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Michelle Kotte is a board-certified Psychiatric Nurse Practitioner with over 13 years of nursing experience. She creates a warm, supportive environment and values open communication. Michelle is passionate about focusing on the whole person and tailoring care to each client’s unique needs.

Michelle’s approach is direct, collaborative, and centered on partnership. She works closely with clients to develop a personalized plan, emphasizing transparency and shared decision-making throughout treatment.

Michelle begins with an in-depth initial assessment covering physical, mental, emotional, social, and environmental well-being. She focuses on medication management, supportive therapy, and lifestyle modifications to help clients reach their goals.