Drs. Idubor, Marcum join CHI Memorial Lung Care Associates

CHATTANOOGA, Tenn. (October 28, 2025) – CHI Memorial Medical Group is pleased to welcome Osamuyi Idubor, DO, and Robert Marcum, MD, FCCP, to CHI Memorial Lung Care Associates. Dr. Idubor earned his medical degree from Philadelphia College of Osteopathic Medicine in Suwanee, Georgia. He completed an internal medicine residency at Northside Hospital Gwinnett in Lawrenceville, Georgia, and a pulmonary disease fellowship at Eisenhower Medical Center in Rancho Mirage, California.

Dr. Marcum earned his medical degree from the Medical University of South Carolina in Charleston. He completed an internal medicine residency at Keesler Air Force Base in Biloxi, Mississippi, and a fellowship in pulmonary disease/critical care medicine at Lackland Air Force Base in Texas. He is a fellow of the American College of Chest Physicians and has more than 30 years of experience treating patients in the Chattanooga and Cleveland communities.

Drs. Idubor and Marcum join Angelique Gross, MD, Sumit Patel, MD, Jesse Tucker, MD, Josue Mendoza, NP, Kristen Miranda, NP, Sandra Webb, NP, and Carole Johnson, NP, at CHI Memorial Lung Care Associates. The practice has two locations: 725 Glenwood Drive, Suite E-500, Chattanooga, Tennessee, and 4700 Battlefield Parkway, Suite 360, Ringgold, Georgia.

Drs. Idubor and Marcum welcome new patients. To schedule an appointment or for more information, call 423-495-2635 or visit CHIMemorialMedicalGroup.org.

About CHI Memorial Medical Group

CHI Memorial Medical Group is part of CHI Memorial, a nonprofit, faith-based health care organization dedicated to the healing ministry of the church. CHI Memorial Medical Group has convenient locations throughout southeast Tennessee and north Georgia. Our network of dedicated physicians provides quality health care for the entire family. Specialties include family and internal medicine, urology, pulmonology, neurology, geriatrics, urgent care clinics, general surgery, bariatric surgery, surgical oncology, thoracic surgery and vascular surgery. To find a physician near you, visit chimemorialmedicalgroup.org.