This information is important if you have copays and coinsurance expenses - and it's interesting to note how different the charges for medical services can be.
www.healthcarebluebook.com shows pricing for different medical services and
www.goodrx.com can provide savings on prescription drugs.
Another useful tip - how often have you needed your prescription information (dosage, name, etc) and not had it? If your phone will take pictures (and most will these days), take a picture of each of your prescription bottle labels and keep it on your phone. You'll always have a record if you need it.