The 2nd deal is slightly better when calculated out. However both deals are good. Here's what I did to calculate:
Assumptions are made that both jobs are 40 hours a week. The 2nd job in addition adds 16 hours a month (assuming those two weekend days a month are 8 hours a day). Dividing this by 4 weeks a month adds 4 hours a week to the second job. So the Second job actually totals 44 hours a week.
Now finding hourly wage from salary:
1st job: $95,000 divided by 52 weeks in a year, divided by 40 hours a week = $45.67 an hour
2nd job: $110,000 divided by 52 weeks in a year, divided by 44 hours a week = $48.08 an hour
So it's pretty close. Things to consider the first job you won't have to work weekends. If that's important for you not to do or you have children (childcare), that may work in your favor. The second job you're seeing a little fewer patients so it's a little less stressful, as well you may only have to actually work just a few hours on the weekends (that's a good deal). This is assuming both jobs have near the same level of complexity. The certifications may not get you a bigger salary, but still make you a good candidate. Use them to negotiate for things like a parking space or maybe a little more vacation time! Sometimes you have to think outside the salary box!
Let us know what you do! I'll be negotiating myself next month (First NP Job too)! I'm glad we're sticking up for ourselves and I hope post like these continue =)