House calls by doctors were routine in the first third of the 20th-century. But with increasing demands on their services, doctors soon had to abandon the practice. Now a husband and wife team in Chapel Hill, Dr. Shohreh Taavoni and her husband Dr. Alan Kronhaus, have built a business around a return to this personal type of medical care. The business is called â€œDoctors Making Housecalls.â€ The physicians call on patients in homes, in managed-care facilities, and in offices where their patients work. Several hotels in the Research Triangle also call them when guests require care.