Kodama ended up spending three years in Seattle and then moved to Aspen, Colorado where he lived for 10 years. During Aspen's off-season, he traveled around the U.S., Mexico, and the Caribbean, eating and learning all he could about food. During this decade, he refined his culinary skills and gained the knowledge that would later help him as a restaurateur.
In 1995 D.K. returned to Hawaii and opened his first restaurant, Sansei Seafood Restaurant & Sushi Bar in March of 1996 at the Kapalua Resorts on Maui. His concept of providing contemporary sushi and innovative fusion seafood in a fun and lively setting was an instant success. Sansei's awards and accolades include a prestigious 90 rating in Wine Spectator, the highest food rating in both the 1998 and 1999 Zagat Hawai'i Restaurant Surveys, numerous consecutive HONOLULU magazine Hale 'Aina Awards, inclusion as one of Bon Appetit's "Favorite Asian Restaurants" and one of "America's Best Sushi Bars" in Travel + Leisure. In 2000 and 2002 Kodama opened a second and third Sansei, on Oahu and Kihei, Maui.
In keeping with his love of food and people, in 2003 Kodama partnered with Master Sommelier Chuck Furuya to open Vino Italian Tapas and Wine Bar in the Kapalua Resorts. A second Vino was opened in Honolulu in 2004. The original Maui location closed in 2007 due to resort renovations.
D.K. Kodama is also the author of D.K.'s Sushi Chronicles from Hawai'i: Recipes from Sansei Seafood Restaurant & Sushi Bar, published by Ten Speed Press.