I am on a diet I was put on by a doctor. It's been working. I average about 4-5 pounds a week. Is this a good amount. Obviously I would love to lose more each week but I want to be healthy.

Healthy weight loss pace would be around 1-3 lbs a week. But when you first start, you lose more.
It also depends on how much you weigh currently. If somebody's BMR (basic metabolism rate) is averaging 2000 calories a day, if they reduce their food intake to 1500 calories a day, they'll burn more than somebody who's BMR is only 1600 calories a day. The more you weigh, the higher your BMR is.
Hope that helps (:

4-5 lbs is great. Too much weight loss too fasty is not good. That would put you at a weight loss of 16-20 lbs in a month. That's not fast enough for you? Many would kill to have that problem.

5-6 lbs every week....not exceeding more than 40 lbs per month though.

At first it will be 4-5 lbs each week but after a couple of weeks, average is like 2 lbs. weekly.

whats the diet? can you email me it?!?! and im serious thats really good!