/ Design Patterns. In software engineering, creational design patterns are design patterns that deal with object creation mechanisms, trying to create objects in a manner suitable to the situation. The basic form of object creation could result in design problems or added complexity to the design.
1 Gastroenterologist-specializes in diseases of the digestive system. 2  Geriatrician (Geriatric Medicine) - general practice physician who specializes in caring for older adults. 3  Hematologist-a hematologist specializes in diseases of the blood and bone marrow. 4  Hepatologist-specializes in diseases of the liver.
What is a Vein Doctor Called? A varicose vein doctor is called a phlebologist. A phlebologist is a physician specializing in diseases of venous origin, such as varicose veins. As explained in the PBS special below, phlebology is the study of venous problems.