I'm interested in retail prices from Blue Shield. For example their Silver 70 PPO plan when you get a price quote from Blue Shield is nearly $140 a month more expensive in San Francisco then Los Angeles (Beverly Hills).
That type of data is hard to get and hard to release publicly. But if you play with the tool, you can see that across both HMOs and PPOs, San Francisco County is way more expensive than LA (even when taking into account a risk adjustment). So this may be indicative of a geographic market issue.
This data doesn't come from Chargemasters - it comes from claims data, aggregated and averaged over all members, so it is real data showing what the average cost per member is over a year.