Iris Guerrero Urena, MD

Rebecca Kostopoulos, PMHNP, is a board-certified psychiatric nurse practitioner committed to helping individuals facing mental health challenges lead full and balanced lives.

Her practice primarily focuses on medication management, often combined with supportive or emotionally focused therapy during 30-minute follow-up visits. When appropriate, Rebecca may recommend involving an additional therapist to ensure the most effective and comprehensive care.

She earned her Master of Science in Nursing with a specialization in psychiatry from Columbia University and her Bachelor of Science in Nursing from Boston College. Her training includes psychiatric diagnosis, medication management, and both psychodynamic and cognitive-behavioral therapies.

With over a decade of experience, Rebecca has evaluated and treated adults in a variety of clinical settings. Her previous roles include working at Elmhurst Hospital’s Comprehensive Psychiatric Emergency Program, Gracie Square Hospital’s inpatient unit, as well as in community health centers and skilled nursing facilities.

As a nurse practitioner, Rebecca believes that mental health is just as vital as physical health. She values the therapeutic relationship and approaches treatment with empathy and collaboration, ensuring that each patient receives personalized and compassionate care.

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Dr. Cabrera is a board‐certified psychiatrist with several years of experience working with an ethnically and culturally diverse population in outpatient, inpatient, and psychiatric emergency room settings. Most recently, Dr. Cabrera practiced privately treating adults with a wide range of mental illnesses both in person and via telepsychiatry. Prior to this, she was an attending psychiatrist in the outpatient department and in the Comprehensive Psychiatric Evaluation Center at Mount Sinai Beth Israel where she also served as Associate Training Director of Psychiatric Residency Training. Dr. Cabrera has a strong background in psychopharmacology and supportive and psychodynamic psychotherapy.

Dr. Lemaire Leo Pierre is a board certified adult psychiatric provider with over 10 years of experience. He has additional years working in the medical field as a physician assistant. Dr. Pierre's practice entails medication management accompanied by supportive psychotherapy. He frequently encourages other forms of psychotherapy with a counselor to maximize treatment outcomes. After completing medical school at Central America Health Science University, he returned to New York City and completed his psychiatry residency at New York Medical College Program at Metropolitan Hospital Center. Subsequently, he moved to Minnesota and worked with Park Nicollet Health Service/HealthPartners. He had been there for 10.5 years, where he oversaw a successful psychiatric practice and helped his patients who had been struggling with their conditions. Dr. Pierre is a member of the American Board of Psychiatry and Neurology, in addition to the American Psychiatry Association and State Psychiatry Association. He also enjoys attending conferences and reading journals to learn about cutting-edge treatments so that he is updated on the most recent FDA-approved medications.

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. Wasser is a staff psychiatrist at Talkiatry, dedicated to providing compassionate and effective care through telepsychiatry. He completed his undergraduate studies at Moravian College in Bethlehem, Pennsylvania, where he focused on Neuroscience and Pre-Medical studies. Subsequently, he pursued his medical degree at Rocky Vista University in Parker, Colorado before completing his psychiatry residency at HCA Aurora in Aurora, Colorado. Dr. Wasser was the recipient of the Chairman's Crystal Distinction of Excellence Award, rewarding a resident's exemplary performance and endorsing a resident's future success in the field of psychiatry. With a strong foundation in both neuroscience and psychiatry, Dr. Wasser approaches each patient with a deep understanding of the mind-body connection and the complexities of mental health. When Dr. Wasser is not providing professional care, he is an advocate for personal health and wellness. He enjoys spending quality time with his wife and family, staying active through exercise, relaxing at the Jersey Shore, and exploring new travel destinations.

Dr. Wasser's approach to patient care is rooted in empathy, trust, and collaboration. He is dedicated to listening closely to each patient's unique concerns and crafting personalized treatment plans that address both immediate symptoms and long-term mental well-being. His specialties include managing mood disorders, anxiety, depression, obsessive-compulsive disorder and stress-related conditions, with a particular emphasis on helping individuals navigate life transitions and mental health challenges.

Dr. Wasser believes in a thorough and patient-centered approach. During the first session, he takes the time to understand his patient’s history, current struggles, and goals for treatment. Together, they establish clear and realistic objectives to guide the treatment process. Dr. Wasser offers a combination of psychotherapy, medication management, and wellness strategies to support his patients. He values open communication and ensures that every patient feels heard and empowered throughout their mental health journey.

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Dr. Kamyl Bogan, a board-certified psychiatrist, attended Vanderbilt University for her undergraduate education and earned her medical degree from the Quillen College of Medicine. She completed her psychiatry residency and community fellowship at the University of Florida College of Medicine – Jacksonville. Dr. Bogan was inducted into the Gold Humanism Honor Society in recognition of her compassionate care and was selected as an APA SAMHSA Fellow, where she designed a conference focused on resources for individuals with substance use disorders.

Dr. Bogan strives to create a welcoming and supportive environment for her patients. She listens with empathy and compassion, ensuring that every individual feels heard and safe throughout their care. She is dedicated to practicing with cultural humility and responsiveness, using evidence-based approaches to meet the diverse needs of those she serves.

In initial appointments, Dr. Bogan takes time to explore each patient’s history, primary concerns, and symptoms. Together, they establish treatment goals and collaborate on a personalized plan that may include medication management, therapy, or a combination of both to promote meaningful and sustainable improvement.