Bo Shen, MD

Dr. Cassandra Simmons is the Chief of General Obstetrics & Gynecology at NewYork-Presbyterian/Columbia University Irving Medical Center (CUIMC). In this role, Dr. Simmons directs clinical operations for the division of General Ob/Gyn, with the goal to deliver the highest quality of care to patients. Before joining the faculty at CUIMC, Dr. Simmons practiced as an Ob/Gyn in many states across the country, including California, Georgia, New Jersey, and the New York Metropolitan Area. This diverse breadth of professional experience has given her an idea of what Ob/Gyn care could, and should, look like for patients. Informed by these experiences, Dr. Simmons emphasizes the importance of building trusting patient-provider relationships and improving processes that support continuity of care. In her clinical and administrative roles, Dr. Simmons is passionate about addressing the myriad determinants of health that can shape outcomes for women and their families. Specifically, Dr. Simmons is focused on the accessibility of preventative care as a means for mitigating health disparities among vulnerable populations. Outside of her work at CUIMC, Dr. Simmons is a proud mother of three children.

Anuraag S. Parikh, MD is a fellowship trained head and neck surgeon scientist, with clinical expertise in the full breadth of head and neck surgical oncology and microvascular reconstruction. Dr. Parikh graduated from the Columbia University Vagelos College of Physicians & Surgeons, where he was elected to the Alpha Omega Alpha Honor Society. He completed residency in Otolaryngology-Head and Neck Surgery at Harvard University/Massachusetts Eye and Ear. During residency, he completed an additional two year postdoctoral research fellowship under an NIH T32 grant and was awarded the Jeffrey P. Harris, MD PhD Research Award for his work in tumor heterogeneity in head and neck cancer. He then completed fellowship in advanced head and neck surgical oncology and microvascular reconstruction at the Ohio State University/James Cancer Center. Dr. Parikh’s clinical interests include the treatment of benign and malignant conditions of the head and neck, including tumors of the oral cavity, pharynx, larynx, sinonasal tract, skull base, skin, salivary glands, thyroid, and parathyroid. Dr. Parikh specializes in transoral robotic surgery (TORS) for tumors of the oropharynx and microvascular free tissue transfer for reconstruction of the head and neck. Dr. Parikh also conducts basic and translational research aimed at understanding the role of tumor heterogeneity on treatment outcomes in head and neck cancer (HNSCC) and salivary adenoid cystic carcinoma (ACC). His work utilizes novel techniques such as single cell sequencing, multispectral imaging, and 3D organoid modeling to model HNSCC and ACC tumors at the level of individual cells. Dr. Parikh is the author of many highly impactful peer-reviewed articles, including publications in Cell and Nature Biotechnology, and he has regularly presented his research at national meetings.

Justin K. Greisberg, MD, is an orthopedic surgeon specializing in foot and ankle reconstruction and complex musculoskeletal trauma. Dr. Greisberg is Chief of Foot & Ankle Orthopedics, Chief of Orthopedic Trauma, at NewYork-Presbyterian-Lawrence Division, and Professor of Orthopedic Surgery, Columbia University. Dr. Greisberg is an expert on complex reconstructive surgeries, limb realignment, diabetic reconstruction, Achilles tendon injuries, stress fractures, and total ankle replacement. His practice leverages advanced minimally invasive arthroscopic techniques, combined with the latest medications, braces, and orthotics to ensure accelerated recovery times. Following medical school and residency training, Dr. Greisberg completed advanced fellowship training in both foot and ankle surgery and orthopedic trauma. As chief of the foot and ankle service at Columbia University Irving Medical Center, Dr. Greisberg's practice – based in Manhattan and Westchester County – is supported by the full resources of the NewYork-Presbyterian Hospital system, and he frequently receives emergency trauma cases from across the region. In addition to his clinical practice, Dr. Greisberg is also a highly respected scholar who is conducting several research trials on foot and ankle procedures and trauma surgery. He co-authored a textbook, Core Knowledge in Orthopedics: Foot and Ankle, and numerous peer-reviewed articles that have appeared in professional medical journals. Dr. Greisberg is actively involved in the education of medical students and orthopedic residents and is frequently invited to lecture on complex problems of the foot and ankle at major medical conferences.