Dr. Ankur Gupta

Dr. Rachel Jessica Bishop provides comprehensive eye care at the Wilmer Eye Institute locations in Frederick and Bethesda, Maryland. An assistant professor of ophthalmology at Johns Hopkins, she brings decades of service in military and public health settings to her patient-focused practice. Before medicine, Dr. Bishop served as an officer in the U.S. Army. She completed medical school at the University of Pennsylvania and ophthalmology residency at Walter Reed, later leading refractive surgery and eye care for active-duty personnel and families. After joining the U.S. Public Health Service, Dr. Bishop served as chief of the consult service at the National Eye Institute, caring for patients enrolled in NIH clinical trials and monitoring ocular effects of treatments across institutes. Her interests include dry eye disease—including ocular graft-versus-host disease—medication side effects, low-vision quality-of-life, and improving access to care through technology. Patients value her clear explanations, thoughtful counseling, and broad experience spanning academic, military, and federal medicine.

Dr. Sarah M. Chang is a board-certified comprehensive ophthalmologist known for precise cataract surgery and thoughtful, individualized care. She offers a full range of options—including premium lenses, light-adjustable lens technology, and minimally invasive laser procedures—so patients can match treatment to their visual goals. Beyond cataracts, Dr. Chang cares for glaucoma, dry eye, corneal disease, and common retinal conditions, coordinating closely with subspecialists when needed. A Washington, DC area native, she earned her bachelor’s degree in biomechanical engineering from Stanford University and her medical degree from the University of Maryland School of Medicine, where she was inducted early into Alpha Omega Alpha and received the Richard Susel Award for Clinical Excellence in Ophthalmology. She completed an internal medicine internship at Mercy Medical Center in Baltimore and an ophthalmology residency at the University of Maryland. Patients value her clear explanations, warm bedside manner, and commitment to durable visual outcomes.

Dr. Sang N. Tran is a comprehensive ophthalmologist and cataract surgeon offering modern medical and surgical eye care with a friendly, down-to-earth style. He enjoys helping patients protect and improve their vision using evidence-based treatments and the latest technology, from careful monitoring of chronic eye disease to advanced cataract surgery. A Maryland native, Dr. Tran earned his undergraduate degree with honors at Johns Hopkins University and his medical degree at the University of Maryland School of Medicine, where he also completed ophthalmology residency. During training he received the Richard M. Susel, MD ’66 Award for Outstanding Clinical Performance in Ophthalmology. He performs same-day ambulatory eye surgery at local centers and works closely with patients to choose lens and treatment options that fit their lifestyles. Patients appreciate his clear explanations, calm manner, and focus on long-term ocular health.