George Ellis, MD

Nan Ambrosy is a PMHNP with over 23 years of experience in outpatient and inpatient settings, caring for patients across the lifespan with a wide range of diagnoses. She earned her Doctor of Nursing Practice from Graceland University and holds master’s and post-graduate certificates from Wichita State University. She is ANCC board-certified as both an Adult Psychiatric Clinical Nurse and Lifespan Psychiatric Nurse Practitioner.

Nan uses a patient-centered approach with shared decision-making, fostering strong therapeutic relationships. She focuses on the whole person, emphasizing a balanced lifestyle that includes physical health, sleep, nutrition, exercise, social connections, and spirituality.

She begins with a thorough biopsychosocial assessment and collaborates with patients to set treatment goals. Using clinical judgment and diagnostic criteria, she develops individualized plans, discussing evidence-based treatment options such as therapy and medications. Follow-ups include ongoing monitoring to assess progress and refine goals as needed.

Michelle Scott is a dual board-certified Psychiatric, Family, and Emergency Nurse Practitioner with 16 years of experience. She has an extensive background in psychiatry across the lifespan, emergency medicine, and internal medicine. Her psychiatric expertise includes a strong focus on adult outpatient and inpatient care. Michelle has also served as an acute care hospitalist and held leadership roles, including Assistant Medical Director, in multiple acute psychiatric facilities.

She brings additional experience in addiction treatment and is skilled in cognitive behavioral therapy (CBT), motivational interviewing, and problem-focused therapy. Michelle provides holistic care that addresses a wide range of needs, including mood and anxiety disorders, autism, genetic disabilities, and adult addiction issues.

With over a decade and a half of experience treating individuals of all ages for both acute and chronic medical and psychiatric conditions, Michelle understands the profound impact the right provider can have on a patient’s life. Her goal is to achieve positive, sustainable outcomes through a comprehensive approach that integrates multiple treatment modalities and addresses the whole person.

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Background and credentials

Dr. James is a board-certified adult psychiatrist with 32 years of clinical experience. She earned her medical degree from Tufts University, Boston’s affiliated program and completed her residency training at Steward St. Elizabeth Medical Center in Boston, where she initiated the residency program and received the Resident Teaching Award for excellence in teaching. Throughout her career, she has served in various leadership roles, including as Chief of Psychiatry at Pro Medica Healthcare Company.

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Treatment approach

Dr. James specializes in community adult psychiatry and is deeply invested in providing comprehensive care for individuals and families. She has extensive experience working in outpatient, inpatient, consult-liaison, and emergency room settings, allowing her to tailor treatment to diverse patient needs. Her approach prioritizes holistic, patient-centered care, ensuring that each treatment plan aligns with a patient’s specific challenges and goals.

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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. James carefully reviews their symptoms, medical history, and treatment objectives. She fosters a compassionate and collaborative environment, ensuring that patients feel supported in their journey toward better mental health. Her extensive experience allows her to provide personalized treatment strategies, which may include medication management and therapeutic interventions tailored to each individual’s needs.

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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.

Dr. Clara Kim is a board-certified psychiatrist trained in Adult Psychiatry. She received her medical degree from Yale University and completed her residency training at Cambridge Health Alliance - Harvard Medical School, where she served as Chief Resident of Quality Improvement. Dr. Kim treats each patient with a holistic, evidence-based approach that incorporates psychopharmacological and psychotherapeutic best practices. Her priority is to build a safe and trusting working relationship with each patient, keeping in mind their unique biological, psychological, social, and spiritual contexts. Dr. Kim has extensive experience treating depression, anxiety, trauma-related disorders, personality disorders, OCD, and perinatal conditions such as postpartum depression. Other professional interests include forensic psychiatry, combined psychopharmacological and psychotherapy treatment, and ECT, in which she was certified by the Beth Israel Deaconess Medical Center. She has worked with individuals from diverse backgrounds and all socioeconomic strata.

Dr. Anna Ostrovskaya is a board-certified psychiatrist with over 20 years of experience working with adults of all ages. She earned a bachelor’s degree in psychology from NYU, a medical degree from Rush Medical College, and completed her psychiatry training at Yale. Dr. Ostrovskaya has practiced in inpatient, consultation-liaison, and emergency psychiatry settings, though her primary passion is outpatient care, where she builds long-term therapeutic relationships. She has worked in private practice and clinic settings and serves on the faculty at Yale’s Psychiatry Department, teaching and supervising trainees. She treats a wide range of conditions, including anxiety, OCD, ADHD, PTSD, depression, bipolar disorder, and more, with experience across diverse populations.

Dr. Ostrovskaya emphasizes integrating therapy and medication management. She creates a warm, safe, and respectful space where patients feel understood and supported in their journey to recovery. Her approach focuses on treating the whole person, recognizing that everyone’s story is unique and informs the best path forward.

She conducts thorough evaluations and uses evidence-based prescribing while incorporating psychotherapeutic modalities such as CBT, executive skills training, insight-oriented approaches, and motivational interviewing. Understanding a patient’s history, current symptoms, and treatment goals is central to developing an effective plan and building a strong therapeutic relationship.

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