Bookmark Icon
Print Icon
Email Icon

Meet the Physicians

Bringing top experts to your community

A cancer diagnosis can be an overwhelming experience for patients and their families. At NewYork-Presbyterian Hudson Valley Hospital’s Cheryl R. Lindenbaum Comprehensive Cancer Center, our experienced and compassionate cancer care team guides and supports you through every phase of your cancer journey.

Our highly experienced, board-certified physicians are from ColumbiaDoctors, the faculty practice of Columbia University Irving Medical Center, who are members of the Herbert Irving Comprehensive Cancer Center, one of only three National Cancer Institute-Designated Comprehensive Cancer Centers in New York State. We offer access to the best and brightest people and resources in cancer care today, enabling you to benefit from the latest breakthroughs in diagnosis, treatment, testing and survivorship.

Your cancer care team includes:

  • Board-certified medical oncologists, radiation oncologists, surgical oncologists, radiologists, interventional radiologists and pathologists
  • Magnet award-winning oncology nurses, each with 10+ years of experience
  • Certified nurse practitioners, physician assistants and radiation therapists
  • Patient navigators who provide you with guidance, education and coordination of care tailored to your personalized needs
  • Social workers who provide you with information about in-home, family and medical services
  • Pharmacy staff with experience and knowledge of oncology medications including chemotherapy drugs and immunotherapy agents
  • Referrals to genetic counselors who provide cancer risk assessments and can help you decide whether you or your family members should be tested
  • Palliative care practitioners who help you cope with the symptoms of cancer and its treatment
  • Nutritionists who specializes in the unique nutritional needs of people with cancer and cancer survivors
  • Physical therapists and other rehabilitation specialists to support your recovery
  • Survivorship care providers to guide you in the transition from active treatment to a return to wellness

Meet Our Doctors:

Medical Oncology

J. Gregory Mears, MD

J. Gregory Mears, MD
Dr. Mears is a board-certified Medical Oncologist and Hematologist and is a Clinical Professor of Medicine at NewYork-Presbyterian Columbia University Irving Medical Center. After receiving his medical degree at the Columbia University College of Physicians & Surgeons, Dr. Mears completed his internal medicine residency at Boston University Medical Center and his hematology-medical oncology fellowship at NewYork-Presbyterian Columbia University Irving Medical Center. Dr. Mears cares for people with blood disorders with an emphasis on leukemia, non-Hodgkin’s lymphoma, Hodgkin’s disease, and multiple myeloma. He also has a strong clinical interest in breast cancer and is pursuing clinical research in the fields of Hodgkin’s and non-Hodgkin’s lymphoma.

Martin W. Oster, MD

Martin W. Oster, MD
Dr. Oster is a board-certified Medical Oncologist and an Associate Professor of Clinical Medicine at the NewYork-Presbyterian Columbia University Irving Medical Center. After receiving his medical degree from Columbia University, Dr. Oster completed his internal medicine residency at Harvard/Massachusetts General Hospital and completed his medical oncology fellowship at the National Cancer Institute. Dr. Oster cares for patients with various malignancies, including breast cancer and head/neck cancer. He is also involved in clinical research.

Mark B. Stoopler, MD, FACP

Mark B. Stoopler, MD, FACP
Dr. Stoopler is a board-certified Medical Oncologist and Associate Professor of Medicine at Columbia University. Dr. Stoopler graduated from Weill Cornell Medical College and completed his fellowship in medical oncology at Memorial Sloan Kettering Cancer Center. He serves as Co-Director of the Thoracic Oncology Tumor Board at Columbia University Irving Medical Center. Dr. Stoopler specializes in thoracic oncology, including lung cancer, mesothelioma and other chest tumors, as well as esophageal cancer and gastric cancer. He is a member of the International Association for the Study of Lung Cancer, the International Society of Gastrointestinal Oncology and the American Federation for Medical Research.

Radiation Oncology

Lawrence Koutcher, MD

Lawrence Koutcher, MD
Medical Director of Radiation Oncology, Cheryl R. Lindenbaum Comprehensive Cancer Center
Lawrence Koutcher, MD, received his medical degree from Cornell University, where he earned a National Cancer Institute Fellowship. Board-certified in Radiation Oncology, Dr. Koutcher served as chief resident during his four-year residency at Memorial Sloan-Kettering’s Department of Radiation Oncology. He is currently medical director of Radiation Oncology at the Cheryl R. Lindenbaum Comprehensive Cancer Center at NewYork-Presbyterian Hudson Valley Hospital.
Dr. Koutcher is a member of ASTRO (American Society for Radiation Oncology) and New York Roentgen Society. He has published numerous abstracts and articles on current issues in cancer treatment, including IMRT for head and neck cancer, post-mastectomy radiation for breast cancer, dose escalation in the treatment of non-small cell lung cancer, and stereotactic radiosurgery for brain metastases.

Leah M. Katz, MD, MPH

Leah M. Katz, MD, MPH
Dr. Leah M. Katz completed her undergraduate education at Wesleyan University in Middletown, CT, with a double major in Biology and Science in Society. After college, she completed a year of prostate cancer research at the Dana Farber Cancer Institute, Boston, where her passion for oncology was fostered.
Dr. Katz earned her Master’s degree in Public Health and her Doctorate of Medicine from Tulane University in New Orleans. She completed her Radiation Oncology Residency at the NYU School of Medicine in New York City, serving as Chief Resident.
In July 2017, she joined NewYork-Presbyterian Hudson Valley Hospital’s Cheryl R. Lindenbaum Comprehensive Cancer Center as a Radiation Oncologist.
Board-certified in Radiation Oncology, Dr. Katz has served in leadership positions with ASTRO (the American Society for Radiation Oncology, ARRO (the Association of Residents in Radiation Oncology), and the New York Roentgen Society.

Contact

Cancer Center

For more information or to make an appointment, call 914-293-8400.