Vaporizing is probably the healthiest way to inhale cannabis, however it isn't cheap. The Volcano Vaporizer has been tested to remove 95% of carcinogens in cannabis smoke, meaning what you do breath is less toxic and more of the good stuff, I wouldn't know how well other Vaporizers fair but I would imagine they are all about the same.

There is some controversy about bongs, some claim the water filters out THC, some claim it doesn't, nor does it do a good job filtering out harmful carcinogens, I'm not a scientist so I wouldn't know. But the best suggestion I have heard is to use a long pipe, this way the smoke can cool down and you won't inhale as much carcinogens as a shorter pipe, but compared to a vaporizer I doubt they can compare health-wise.

Here is a link for medical co-ops in so cal, there are many more that are not listed here, but this wouldn't be a bad place to start.
CA NORML

I've heard Orange County is pretty bad, high prices and low quality, good luck.