New internal medicine, ICU, primary care clinicians join Beebe

In line with its mission to encourage healthy living, prevent illness and restore optimal health for communities across Sussex County, Beebe Healthcare continues to expand its team of clinicians.

The healthcare system recently welcomed hospitalist Oluwaseun Adeniyi, MD; Angela Gleysteen, AGACNP-BC, an adult gerontology acute-care nurse practitioner who works on the intensive care unit; and Carla Miller, APRN, CNP, a family nurse practitioner who has joined Beebe Medical Group.

As a hospitalist,  Adeniyi is responsible for admitting patients who present for care in Beebe’s Emergency Department. She provides comprehensive evaluation, monitoring and care for adult patients admitted to the hospital’s medical units during overnight hours. Prior to joining Beebe, she was a resident physician at St. John’s Episcopal Hospital in New York. There, Adeniyi provided care and follow-up treatment for patients and led rapid responses on the medical and critical care units. During this time, she also served as a mentor for medical students and interns.

Originally from Nigeria, Adeniyi earned her bachelor of medicine and surgery degree (medical degree equivalent) from Obafemi Awolowo University in Ile-Ife, Nigeria. She completed a clinical externship at Boneguard Orthopedics in Randolph, Mass, and followed with internship and residency training at St. John’s Episcopal Hospital and SUNY Downstate in New York. Adeniyi is a member of the American College of Physicians, the Nigerian Medical Association, and the Medical and Dental Council of Nigeria. She is fluent in both English and Yoruba.

“I appreciate being a part of Beebe’s commitment to the delivery of quality patient care and am pleased to serve the local community,” said Adeniyi.

As a board-certified adult gerontology acute-care nurse practitioner, Gleysteen collaborates with hospital intensivists and other clinical providers in Beebe’s intensive care unit to facilitate patient admissions, optimize care management and coordinate care for patients who are undergoing treatment for complex conditions. She is a graduate of the Margaret H. Rollins School of Nursing at Beebe Healthcare. She went on to earn her RN-BSN degree from the University of Delaware, then completed her master of science in nursing at Walden University, which allowed her to pursue the advanced practice clinician career path. Gleysteen has devoted her career to Beebe as she has grown professionally. She began her nursing career as a certified nursing assistant on the women’s and children’s unit. After completing her nursing degree, she became a clinical nurse in that unit as well as in the medical/surgical unit. Several years later, Gleysteen transitioned to the ICU as a bedside nurse. Later she served as an ICU charge nurse, managing staffing needs, education and training while continuing to care for patients. After completing her master’s degree, she moved into her current role.

“I am a native of Sussex County and always knew that Beebe was the ideal place for me to build my career,” said Gleysteen. “I am grateful for the opportunities I have had to work for my local hospital and care for people who live in the community I call my own.”

Miller, a board-certified family nurse practitioner at Beebe Primary Milford, practices a holistic approach as patients turn to her for medical care. She accounts for mental health, emotional issues and financial challenges as she guides patients toward better health and wellness. Miller cares for patients of all ages and, based on her years in nursing, she is experienced in addressing virtually all disease processes, She has a special interest in treating thyroid disease and diabetes.

Miller began her nursing career at Atlantic General Hospital, where she worked as a registered nurse in the emergency department and was active on the hospital’s skin committee, research council and executive council. She went on to work in Wilmington for Correct Care Solutions, the Connections Community Support Program and Regional Medical Associates. In 2024, Miller relocated to Sussex County to be closer to family.

Miller is a graduate of Wilmington University, where she earned both her master of science degree in nursing as a family nurse practitioner, and her bachelor of science degree in nursing. She also trained at Delaware Technical and Community College, where she earned an associate degree and diploma in nursing.

“I am thrilled to have an opportunity to work at Beebe – a place I feel offers the small-town hospital vibe while also delivering exceptional, top-notch care,” said Miller. “The environment of care here encourages open and honest communication. I want my patients to feel comfortable talking with me about any and all concerns.”