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Welcome To Our New Practitioners!

Michael Grant, MD

Dr. Michael Grant is an Assistant Professor of Medicine in the Section of Medical Oncology at Yale University School of Medicine and a Medical Oncologist and Hematologist at Smilow Cancer Hospital Care Center in Waterbury. He sees patients with a broad range of hematologic and oncologic diagnoses with a particular clinical focus on thoracic and genitourinary malignancies.

Dr. Grant’s current research interests include targeted and immunotherapy approaches in the treatment of non-small cell lung cancer.


Sharynn Hall, MD, PhD

Dr. Sharynn Hall is the Instructor of Medicine (Medical Oncology) at Smilow Cancer
Hospital Care Center in Waterbury. Dr. Hall received her medical degree from the University of Connecticut School of Medicine, and her PhD in Biological Chemistry & Molecular Pharmacology from Harvard Graduate School of Arts & Sciences.

She cares for patients with a variety of hematologic and oncologic disorders, with a focus on breast cancer.


Daniel O’Neil, MD, MPH

Dr. O’Neil is an Assistant Clinical Professor of Medicine (Medical Oncology) and treats women with breast cancer of all stages and subtypes as part of Smilow Cancer Hospital Care Center in Waterbury.

Dr. O’Neil strongly believes in the value of multidisciplinary patient care and collaboration. He aims to incorporate the latest evidence-based practices, alongside a holistic understanding of each of his patients, to offer truly personalized care.


Drs. Grant, Hall and O’Neil can be reached at 203-755-6311, Smilow Cancer Hospital Care Center in Waterbury, Suite B at The Harold Leever Regional Cancer Center.