Ewan Johnson, MD, PhD

Ewan Johnson, MD, PhD

Dr. Ewan D. Johnson has been a physician for more than 12 years. He was voted best internal medicine doctor in Tomball for 2016 by the readers of Living Magazine.

A member of Tomball Regional Internal Medicine Associates since 2010, he specializes in internal medicine and medical oncology.

Johnson received his MD from the University of Texas Medical Branch at Galveston in 2004 and continued his medical training with clinical internship and residency in internal medicine at UT Health Science Center at Houston in the Texas Medical Center. He trained at some of the best hospitals in the nation, including: Memorial Hermann Hospital, The University of Texas MD Anderson Cancer Center, St. Luke’s Episcopal Hospital, Lyndon B. Johnson Hospital, and the Texas Heart Institute in Houston under the mentorship of James T. Willerson, MD.

In 2007-2010, Johnson broadened his expertise in treating patients with cancer by pursuing a postgraduate fellowship in medical oncology at The University of Texas MD Anderson Cancer Center. While at MD Anderson, Johnson’s research interest was in lung cancer and renal medullary carcinoma. He has many peer reviewed articles and abstracts on the subject to his credit. While at MD Anderson, he completed the executive education program in medical and health management at the Jesse H. Jones School of Management at Rice University.

He also received his PhD in organic chemistry from Rice University and currently serves as a member of Rice’s Institutional Review Board.

Johnson is the medical director at Silverado Memory Care – Cypresswood in Houston, and is the director of clinical education for Silverado Hospice North Houston. He has privileges and affiliations with multiple medical centers and hospitals in Texas, including the Christus Spohn Hospital in Alice, Bayshore Medical Center in Pasadena, Clear Lake Regional Medical Center, East Houston Regional Medical Center in Houston and Northwest Texas Health System in Amarillo.

Johnson is a senior aviation medical examiner who is authorized by the Federal Aviation Administration to evaluate pilots and air traffic controllers in the nation, serving to keep the National Airspace System safe with coordinating support from Fort Worth, Texas and Oklahoma City, OK. He is also designated by the FAA as Human Intervention Motivation Study (HIMS) aviation medical examiner with coordinating medical support from Washington, D.C.

A member of the prestigious Mensa International High IQ Society, Johnson stays involved with numerous professional organizations, including the American College of Physicians, the American Medical Association, the American Society of Clinical Oncology, the Texas Society of Medical Oncology, the American College of Physician Executives and the Aerospace Medical Association. He currently serves as a trustee for the Tomball Regional Medical Center and was a former member of the center’s Utilization Review Committee and a former member of the Memorial Hermann Institutional Ethics Committee.

His former academic administrative appointments include serving as director of the Graduate Medical Education Core Curriculum Lecture Series for MD Anderson under the mentorship of professor Emil Freireich, MD, and was the chief teaching fellow in organic chemistry at Rice University under the mentorship of professor W.E. Billups, PhD.

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