
Clinicians

Daniel Cogan, NP
Daniel Cogan has dedicated his career to providing compassionate end of life care to the terminally ill in New York. He has over 20 years of experience as a front-line clinician and educator. In addition to being licensed as Adult Health Nurse Practitioner and Gerontological Nurse practitioner, he has advanced certification in hospice and palliative nursing, and geriatric nursing. He is a graduate of the Columbia University School of Nursing, and earned a Certificate in Bioethics and Medical Humanities from the Montefiore-Einstein Center for Bioethics. In his spare time he is an amateur tree climber and arborist.
Robert Siegel, MD
Dr. Siegel has dedicated his career to building new pathways for patients to access the care they need. He built New York City’s first home hospice program dedicated to delivering end-of-life care to people suffering from heart failure, then served as Medical Director of Calvary Hospital before joining the QuiÄ•tus network. Dr. Siegel trained in Medicine at Columbia University and in Cardiology at Albert Einstein College of Medicine, where he continues to teach cardiovascular medicine to medical students. In his free time he enjoys exploring New York on bicycles and boats.


Cristian Zanartu, MD
Dr. Cristian Zanartu is a board-certified internist and palliative medicine specialist based in New York City, focusing on holistic, trauma-informed care spanning from mental health, symptom management, and care of the terminally ill. He earned his medical degree at Pontificia Universidad Católica de Chile where he graduated Magna Cum Laude, he went on to complete training at Columbia University and Albert Einstein’s School of Medicine. He has also received training in psychedelic-assisted psychotherapy and Internal Family Systems Therapy. With over 16 years of experience addressing the physical, psychological, and spiritual needs of patients, he has worked at major New York institutions including Montefiore Medical Center and New York Cancer & Blood Specialists. He focuses on treating trauma, believing it can be repaired to improve quality of life, and specializes in providing care to diverse populations, including LGBTQ+ community.
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