1954
Born in Medford, Oregon to Hector and Marian Louise Langdon.
1976
Receives a Bachelor of Science in biology from the University of Oregon.
1979
Marries Beva Ann Nall.
1980
Receives a Doctor of Medicine from the University of Oregon Medical School (now Oregon Health and Science University).
1980
Begins an internship in internal medicine at Good Samaritan Hospital in Portland, Oregon.
1981
Begins a postdoctoral fellowship in dermatology at the Yale University School of Medicine.
1982
Begins a residency in dermatology at Yale-New Haven Hospital.
1984
Receives a Connecticut medical license.
1984
Becomes an instructor of dermatology at the Yale University School of Medicine, and joins a private practice in Westport, Connecticut.
1984
Achieves certification by the American Board of Dermatology and the Physician Scientist Award from the National Institutes of Health.
1985
Becomes an assistant professor of dermatology at the Yale University School of Medicine.
1989
Receives the Argall L. and Anna G. Hull Cancer Research Award from the Yale University School of Medicine.
1990
Receives a California medical license and joins a private practice in Arcadia and Covina, California.
1993
Establishes a private practice in Madison, Connecticut.
1994
Founds DERM-L (professional online listserve) at Yale University.
2001
Establishes a private practice in Guilford, Connecticut.
2004
Authors “Langdon RC: Understanding Cosmetic Laser Surgery.”
2004
Achieves certification by the American Board of Cosmetic Surgery.
2014
Achieves certification by the American Board of Facial Cosmetic Surgery.