Look at your resume. Do you use superior verbage or dynamic adjectives? Do you command the attention of the reader? Do you diplay a higher degree of aptitude than other professionals?
The way you word your resume is the way someone will think about you when you read it.
This is a helpful site. Also, if you mail your resume directly to the doctor in the office you are trying to get hired at with a good cover letter, you stand a better chance of being considered. Use a superior quality paper in a color other than white; it's worth the extra money! Send it in a manila envelope instead of folding. Use different fonts than "Times New Roman". Most importantly, have someone smarter than you read it over and check for grammar and spelling.