title: Hospitalist pioneer. IPC's Singer is top doc businessman.
authors.affiliation: bkirchh@sbcglobal.net
authors.forename: Barbara
authors.initials: B
authors.lastname: Kirchheimer
mesh_terms: D001363:Awards and Prizes; D016520:Entrepreneurship; D049673:History, 20th Century; D049674:History, 21st Century; D020445:Hospitalists; D007193:Independent Practice Associations; D015141:Los Angeles; D015272:Pulmonary Medicine