Gregory Harrison Nalesnik DO FAAP is an oncologist specializing in pediatric hematology and oncology based in New York, New York. Located at 1275 York Avenue, this specialist focuses on diagnosing and treating children with a wide range of cancers, including leukemias, lymphomas, bone and soft tissue tumors, nerve tumors, and brain tumors. His practice is part of a larger medical center dedicated to comprehensive cancer care for young patients.
As an oncologist, Dr. Nalesnik manages complex treatment plans that often involve chemotherapy, radiation, and other advanced therapies tailored to pediatric patients. His approach emphasizes careful monitoring and collaboration with a multidisciplinary team to address both the medical and supportive care needs of children facing cancer. The treatments are designed not only to target the disease but also to maintain the quality of life during and after therapy.
Patients and families working with this oncologist in New York benefit from access to specialized diagnostic tools and clinical expertise in pediatric oncology. The care extends beyond immediate treatment to include ongoing follow-up and management of potential late effects of cancer therapy. Dr. Nalesnik’s role includes guiding families through challenging decisions while ensuring that care is individualized for each child’s unique medical situation.
The location offers a centralized resource for pediatric cancer care, making it a vital part of the community’s healthcare network. With a focus on childhood cancers, this oncologist provides essential services to families seeking specialized medical attention in a city known for its advanced medical facilities. Contact can be made through the office phone number, 212-639-2000, for consultations and appointments.


































