Dr. Alan Trumbly is an independently practicing medical oncologist on staff at Methodist Richardson Cancer Center. He attended medical school at Oklahoma State University. He completed his internal medicine residency and his medical oncology fellowship at Scott & White in Temple, Texas. During his fellowship, Dr. Trumbly proudly served as a physician at Central Texas Veterans Health System and was nominated into the ...

Dr. Mason was born and raised in Boston and received his undergraduate degree at Harvard College and Medical degree at Columbia University's College of Physicians and Surgeons. He trained at the Brigham and Women's Hospital in Boston, a Harvard teaching hospital. After completing his training, he served as a staff surgeon at Johns Hopkins University. He then practiced at the Cleveland Clinic in Cleveland for over a ...

Jinhee Choi, MD, obtained her medical degree from the University of Wisconsin-Madison, where she also completed her residency in otolaryngology. She moved to Dallas from Fayetteville, North Carolina, where she was in private group practice. Dr. Choi is board certified with the American Board of Otolaryngology. Dr. Choi’s practice encompasses all aspects of general otolaryngology, with special interests in pediatric ...

Dallas native, Kate O’Connor MSN, APRN, FNP-C, is a family nurse practitioner who has served patients in multiple capacities in the medical field since 2007. Ms. O’Connor earned both her undergraduate and graduate degrees from the University of Texas at Arlington: College of Nursing and Health Innovation. Certified by the American Association of Nurse Practitioners, Ms. O’Connor treats patients of all ages facing a ...

Abdul El Chafic, MD, recently joined Methodist Richardson Medical Center as Medical Director of Advanced Endoscopy. He was previously the Director of Endoscopic Innovation and Training at Ochsner Medical Center in New Orleans. Dr. El Chafic completed his residency in internal medicine and fellowship in gastroenterology and hepatology at Indiana University under the mentorship of world-renowned gastroenterologists. He ...

Charles Lostak, DO, is a veteran gastroenterologist who has been on the medical staff of Methodist Health System since 1992. He earned his bachelor’s degree in chemical engineering at the University of Colorado Boulder. He went to work as a petroleum engineer for several years before entering medical school. Dr. Lostak received his Doctorate of Osteopathic Medicine from Oklahoma State University Health Sciences ...

Dallas native, Lauren Sand, MD, is a board eligible neurosurgeon who practices at the Methodist Moody Brain and Spine Institute on the campuses of Methodist Richardson Medical Center Methodist Dallas Medical Center. She is the only female, Ivy League educated neurosurgeon in the Dallas Area. Dr. Sand grew up in Dallas attending Ursuline Academy and attended the University of Pennsylvania for her undergraduate degree. ...

Jason Brown, MD, is board-certified by the American Board of Obstetrics and Gynecology. He specializes in providing care for all women throughout their lives, including preventative care, prenatal and postpartum care, surgical care, and treatment of infections or illnesses. Dr. Brown has been providing compassionate women’s healthcare for more than 20 years. Fluent in Spanish, Dr. Brown is committed to serving ...

John George, MD, is board certified in interventional cardiology, cardiovascular diseases, and nuclear cardiology. He has authored multiple published articles and has co-authored chapters in textbooks. He has been principal investigator on several major national and international clinical trials and is currently conducting research in acute coronary syndromes and heart failure. He is a member of the combined ...

Evan Mar, MD, received her Doctorate in Osteopathic Medicine from the William Carey University College of Osteopathic Medicine. She then completed her residency in internal medicine at CHRISTUS Good Shepard Medical Center through the University of Texas Health Northeast. As a result of her outstanding work and dedication during her residency, Dr. Mar was granted the selective opportunity to serve as Chief Resident. ...