Maybe the following article helps you [if you find it download-ready]:

Health information, the Internet, and the digital divideArticle Health Information, The Internet, and the Digital Divide

There is Digital marketing of Equipment & Consumables, then there is digital marketing of Diagnostic tests, digital marketing of doctors services (booking appointments etc - Practo), and then there is digital marketing of medicines (1mg, netmeds etc). All the areas are seeing lots of traction.

Very useful.....people get to know diffrent options among healthcare items

Dear Jagmohan Sharma , the healthcare industry has the potential to significantly increase their reach and effectively engage consumers with digital marketing tactics. Digital marketing has helped the healthcare industry evolve. By using search engines as a tool, creating targeted outreach with great content, engaging patients on social media, and taking advantage of reporting data, patient engagement and loyalty are improved, as well as marketing’s ability to confidently prove their value to the C-suite.

Still a relatively new aspect of healthcare marketing, digital marketing has already fundamentally changed the way healthcare marketers operate. As digital marketing continues to grow and evolve, the healthcare marketing industry will surely follow.

Here's a blog post on how healthcare recruiters can use social media to aid in their recruitment efforts:

http://education.healthcaresource.com/social-media-tips-healthcare-recruiters/