The doctor in Dr. Lastname is Dr. Michael I. Bennett (Harvard University '66, Harvard Medical School '70), a board-certified psychiatrist. While he's worked in every aspect of his field, from hospital administration to managed care, his major interest is in his private practice which he's been running for almost 30 years. A distinguished fellow in the American Psychiatric Association, Dr. Bennett has also spent years as a member of the Massachusetts Psychiatric Society, serving as president in 2004-2005. He's the author of The Concise Guide to Managing Behavioral Health Care Within a Managed Care Environment, which, while informative, reads like a VCR manual.

The writer half of Dr. Lastname is his daughter, Sarah Bennett. Just as Dr. Bennett has worked in every aspect of psychiatry, Sarah's written for magazines (Women's Wear Daily, Glamour UK), the internet ([...], New York Magazine's Vulture blog, Black Balloon Publishing's Airship Daily blog, and, of course, [...]), television (MTV), and books (an essay in the 2007 anthology Damage Control, edited by the novelist Emma Forrest). She's spent two years writing sketch comedy at the Upright Citizens Brigade Theater in New York, and now writes for [...].

With Dr. Bennett's decades of experience as a therapist and his daughter's experience writing comedy and, well, being his daughter, they've successfully kept [...] going for over two years, collaborating on over 400 posts and 800 cases. Dr. Bennett has the expertise, but Ms. Bennett is the only one able to translate his sense of humour; he draws from his three decades of private practice, and she draws the humour out of his doctor-speak.