"I'd like to do it," she said before Sunday's Sprint Cup race at Phoenix International Raceway. "I think it would be a huge thing as far as to say something that I've done, and I think it would be something that if I did it, it would be because I had a chance to win.
"That's great because it's Indy. I've come close. It would be nice to finish that off. I always thought I'd win there. If I don't, no regrets. I've had great races there. I've had a great track record."
Patrick placed in the top 10 in six of the seven Indy 500s she raced in. She was the first woman to lead the race when she ended up fourth when she was a rookie in 2005. Her best Indy 500 finish was in 2009 when she took third.
She said earlier this year that her management team was trying to structure a deal in which she would be the fourth driver to race in the Indy 500 and Coca-Cola 600 on the same day. John Andretti, Robby Gordon and Tony Stewart -- her NASCAR team owner -- are the only ones to accomplish the feat.
Patrick hopes to continue racing in Nationwide events in addition to her Sprint Cup schedule. She has been on the Nationwide circuit since 2010. She has two top-10 finishes in her last three races.
"I'd like to basically flip the schedule from this year to next year and do full-time Cup and do 10 to 14 Nationwide races," she said. "I'd like to do a slew of them. The big tracks, tracks I feel I have a shot to win and tracks I feel I need the track time. So we'll look at the schedules and see what works."
Patrick's representative, IMG senior vice president Mark Dyer, said she does not need to race in the series to keep her endorsement contract with title sponsor Nationwide Insurance.
"But even if she didn't have a deal, she'd want to do it," Dyer said. "She loves driving that series, especially (restrictor-plate tracks) Daytona and Talladega. We'll be talking about what races will enhance the Cup side the most. Nationwide is a big partner of hers, so she'd like to maintain a presence in the series that really gave her the start in NASCAR."
Dyer said he hopes to have Patrick's 2013 schedule confirmed later this month.