On the show, Ling was a Phi Beta Kappa member from Harvard, an overachiever, and in her third year of medical school.
She became close with castmates Pedro Zamora and Judd Winick, and the three became inseparable, with Cory joining them halfway through their stay in San Francisco.
She attempted to maintain a long-distance relationship with her then-boyfriend Chris, and the roommates surprised her by having him visit San Francisco on her birthday, putting on a mock presentation of This Is Your Life, with a tuxedo-wearing Winick as the announcer, and her boyfriend as the final person to appear.
After dating for five years, Winick proposed to Ling with a cartoon he made for the occasion, and which he presented to her while wearing a gorilla suit.
Ling completed her residency in primary care at the University of California, San Francisco in 1999, and entered into an AIDS-research fellowship.