Hi Lise
A couple of thoughts on your quest.
1) Look for a multi-doctor practice. It is much easier to afford quality staff when the expenses are shared and with more Dr's. Also with a larger staff flexible/part-time scheduling is more common and easier to accomodate.
2) Look for a practice that invests in patient perceptions of their practice i.e. they spend money on their leaseholds, patient comforts and new technology. These Dr's realize that patients have a choice and work to keep them. The Dr's that have this mindset, generaly have the same feeling towards their staff.
3) Ask them what they provide for continuing education for their staff. Dr's who do this have a strong desire to retain, not retrain.
4) Check out their websites. Do they give you a good feel? Do they show the staff or just focus on the Doc? A good practice realizes that they can't do it all and that their staff is as important as they are in the patients eyes.
You are the driver in today's employment market, take a little while to do your research, you're worth it.
Good Luck!