Newbury had a surgical practice in
Summit and
Cranford from 1939 to 1959. He was a member of the surgical staff and served as chief of staff at
Overlook Hospital in Summit. In 1959, he began practicing medicine in
Lavallette. He also served as a member of the Lavallette Board of Health and was school physician for Lavallette Elementary School. He became a member of the surgical staff at
Point Pleasant Hospital. He retired in 1978. Following retirement, he had a private practice with his wife, who worked as a nurse. Newbury became a diplomat of the
National Board of Medical Examiners in 1936 and was a fellow of the
International College of Surgeons in 1947. He became a fellow of the
American College of Surgeons in 1951. He was a member of the Union County Medical Society and served as its president from 1958 to 1959. He was a member of the
American Medical Association and the Medical Society of New Jersey. He was also a member of the Ocean County Medical Society. He was a medical advisor for the Lavallette Fire Department and First Aid Squad. ==Personal life==