Halaljello,
Consulting can vary from specific biotech to general benefits consulting. You can choose the type of industry you wish to work in as different companies specialize. Most people don't practice, but again, this can be tailored to your wishes.
Your salary can vary with your background, experience, type of clients, and the company you work for. I have seen salaries range from 60k to 500k for established partners per year.
Generally, the MBA degrees are more management oriented, and will gear you for what has already been stated above, administrative roles. To go into consulting, you may not even need the MBA, just a clear demonstration of potential and intelligence. MacKenzie, one of the top consulting firms, spends as much time recruiting from PhD programs as it does the nation's top MBA programs.
As for your background, it may allow you advance standing at certain schools, but not all. However, the experience and knowledge that you have gained from the degree should come in useful.
My experiences in consulting have led me in different directions. My first project was to develop applications for a newly developed drug that had very limited market potential. I researched journals and interviewed experts, and finally presented my results to the company stating that there were other drugs that could benefit from the unique properties of this new product. My second project was more public health oriented as I was hired by a city public health department to write an economic proposal to the city legislature, stating the importance of good mental health. I used my undergraduate economics degree and business experience to show how poor mental health can affect residents, businesses, and the government financially.
I hope to pursue a MD/MBA at Tufts if I am accepted off of the waitlist. If you have more questions, feel free to write again, or email me.
Regards,
Neel