Sonia Ascosta, MSN, RN, OCN
Sonia Acosta is a dedicated nurse at Memorial Sloan Kettering Cancer Center, where she has served the Long Island community since 2011. She specializes in both emergency room and oncology nursing and currently works in the Symptom Care Clinic, contributing as a member of the rapid response team for oncology patients. Her role focuses on providing timely, compassionate care to patients who find traveling into New York City challenging.
Coming from a family deeply rooted in emergency nursing, Sonia grew up surrounded by the values of healthcare and service. Both in New York and Spain, family members—including her cousins and twin sister—have pursued careers in emergency care. These connections have provided her with a unique perspective on patient care and fostered lifelong learning through shared experiences and discussions within her family.
Sonia’s path to nursing was unconventional. While working on a trading floor in Manhattan, she attended nursing school at night for four years, balancing a demanding career with her studies. This journey not only reflects her resilience and determination but also gave her a broad perspective on managing high-pressure environments, which she now applies to her work in emergency and oncology nursing.
Throughout her career, Sonia has built a strong foundation in emergency medicine, with early experience in rehabilitation and nursing home care. She now combines this expertise with oncology care, providing comprehensive, patient-centered support to individuals on Long Island. Proud to be part of Memorial Sloan Kettering Cancer Center, which was recently recognized as a top-ranked cancer center globally, Sonia continues to advance her practice while making a meaningful impact on her patients’ lives.
• Borough of Manhattan Community College
• SUNY Delhi BSN
• Western Governors University MSN
• MSN
• RN
• OCN
• Part of Memorial Sloan Kettering Cancer Center, ranked #1 globally (2026)
• Emergency Nurses Association
• Oncology Nurses Society
Areas of Specialization/Expertise
- ER
- Rapid response care for oncology patients
- Emergency room nursing
- Oncology symptom management
- Rehabilitation nursing
What do you enjoy most about practicing medicine?
I’ve always had a strong desire to help others, which runs in my family—both in New York and Spain, several of my relatives are emergency room nurses. I even helped my twin sister through nursing school when she was 19, and we continue to exchange insights and learn from each other, even though we’ve taken different paths in healthcare. Being part of Memorial Sloan Kettering allows me to serve oncology patients in an outpatient setting on Long Island, making care more accessible for those who find it difficult to travel into the city.