Mark B. Geyer MD – MSK Leukemia Specialist & Cellular Therapist is a hematologist based in New York, New York, specializing in the diagnosis and treatment of blood disorders, with a particular focus on leukemia. Located at 530 E 74th St, this practice offers expert care in hematology, combining advanced cellular therapies with comprehensive patient management. Dr. Geyer’s approach integrates cutting-edge research and clinical practice to address complex hematologic conditions in a metropolitan setting.
As a hematologist, Dr. Geyer evaluates and treats a wide range of blood-related diseases, including various types of leukemia and other malignancies. The practice emphasizes personalized treatment plans tailored to each patient’s specific condition and medical history. Utilizing innovative cellular therapies, the specialist works to improve outcomes through targeted interventions that support the body’s natural ability to combat hematologic diseases.
Patients in the New York area seeking expert care for leukemia and other blood disorders can access specialized diagnostic services and treatment options at this location. The clinic’s focus on cellular therapy represents a growing field within hematology that aims to harness immune cells for therapeutic purposes, reflecting the evolving landscape of cancer treatment. With a commitment to integrating research and clinical expertise, this hematology practice addresses the needs of patients requiring specialized blood disorder care.
Located in a central New York City neighborhood, Mark B. Geyer MD – MSK Leukemia Specialist & Cellular Therapist provides accessible and focused care for those facing hematologic challenges. The office can be contacted at 347-588-6736 for appointments and inquiries related to hematology and cellular therapy treatments.


































