There are a myriad of potential careers for an individual with a science PhD. The following links will connect you to professional organizations with information about some of them.
Medical Writing American Medical Writers Association
Science Writing National Association of Science Writers
Technical Writing Society for Technical Communication
Clinical Research Association of Clinical Research Professionals CenterWatch
Clinical Data Management Society for Clinical Data Management
Regulatory Affairs Regulatory Affairs Professional Society
Drug Safety Drug Information Association Safety Pharmacology
Project/Program Management Project Management Institute Project Managers in Pharmaceuticals
Corporate Communications Public Relations Society of America
Technology Transfer and Licensing Licensing Executives Society Association of University Technology Managers (AUTM)
Patent Law or Patent Agent American Intellectual Property Law Association
Investment Banking/Analyst Careers-In-Investment-Banking.com
Medical Science Liaison Medical Science Liaison Institute
Science and Public Policy AAAS Science & Technology Policy Fellowships
Think Tanks Rand Corporation Resources for the Future