Dr. Colin Hamblin will join Dr. Michael Whitt at West Marin Medical Center in Point Reyes Station this month, leaving the Coastal Health Alliance where he has worked since 2004. Hamblin specializes in gerontology and family practice, and has been eager to begin a private practice. He is known to his patients for being personable and even making calls to nursing homes. Eric Fimbres, interim executive director of the Coastal Health Alliance, said most of…