Rachel Peri Hisim, CRNP

Dr. Armstrong works primarily in the area of women's malignancies, with a particular emphasis on breast cancer, ovarian cancer and other gynecologic malignancies, and the genetics of breast and ovarian cancer. She directs the medical gynecologic oncology clinical service and oversees therapeutic clinical trials in gynecologic cancers. Dr. Armstrong's clinical focus is on the development of new therapeutic approaches to the treatment of breast cancer and gynecologic malignancies. Particular areas of interest are intraperitoneal therapy in ovarian cancer and targeted biologic therapies. Dr. Armstrong also directs the Kimmel Cancer Center's Breast and Ovarian Cancer Screening Service, a genetic counseling service that focuses on identifying patients at risk for cancer and examination of new strategies for cancer screening and prevention. Dr. Armstrong has lectured locally, nationally and internationally. She is active in the Gynecologic Oncology Group, serving on the Medical Oncology, Developmental Therapeutics and Phase I GOG committees and as chair of several clinical trials through this group. She is a representative of the Southwest Oncology Group to the Gynecologic Cancer Steering Committee of the National Cancer Institute. Dr. Armstrong also serves as a representative of Johns Hopkins to the National Cooperative Cancer Network serving on the ovarian cancer and breast cancer risk reduction panels. She has participated as a member of the Cancer Working Group for the Office of Research on Women's Health for the National Institutes of Health, as a scientific reviewer for the breast and ovarian cancer research programs of the Department of Defense and the National Cancer Institute, as a reviewer for the NCI Special Emphasis Panel for Insight Awards to Stamp Out Breast Cancer and as a member of the NCI SPORE Program parent committee.Dr. Armstrong also is co-principal investigator for the NCI National Clinical Trials Network (NCTN) Lead Academic Participating Site (LAPS) at Johns Hopkins, now the major avenue for adult oncology clinical trials in the country. Recent work includes immune checkpoint inhibitor therapy in endometrial cancers with microsatellite instability and PARP inhibition in ovarian cancer.

Sara Schlessman is a nurse practitioner who specializes in acute and chronic sinus conditions. She earned her master’s degree in nursing from the University of Kansas School of Nursing. Prior to joining the Johns Hopkins Sinus Center, Sara taught at Towson University in the department of nursing.

Dr. Noah Hahn is a medical oncologist in the Baltimore area, caring for patients with bladder cancer. He serves as the deputy director of the Greenberg Bladder Cancer Institute at the Johns Hopkins School of Medicine.Dr. Hahn earned his M.D. from Indiana University School of Medicine. He completed his residency in internal medicine at Duke University School of Medicine and performed a fellowship in medical oncology at Indiana University School of Medicine. Dr. Hahn joined the Johns Hopkins faculty in 2014.Prior to joining Johns Hopkins, Dr. Hahn was the director of the Genitourinary Medical Oncology Program at Indiana University and chief scientific officer for the Hoosier Oncology Group, a cancer research organization that evaluates innovative and promising approaches to cancer treatment. He is currently conducting clinical trials to test new therapies for bladder cancer, including those for early stage bladder cancer.Dr. Hahn is a member of the Bladder Cancer Task Force for the National Cancer Institute’s Genitourinary Cancer Steering Committee and is chair of the Bladder Cancer Subcommittee of the Eastern Cooperative Oncology Group.