Back in January, doctors’ social network Doximity already had more members than the American Medical Association. Today, it’s announcing $54 million in new funding for its “LinkedIn for doctors.”

The social network helps medical professionals collaborate on patient treatment. “The fifth leading cause of death is medical mistakes. Communication isn’t as free flowing as it should be,” Doximity chief executive Jeff Tangney told VentureBeat in an interview.

Along with its communication features, Doximity also enables doctors to complete up to 20 hours per year of continued education through its partnership with the Cleveland Clinic. Doctors can read personalized articles and answer quiz questions to earn their credit.

Although the company is best known as a “LinkedIn for doctors,” it has added several features key to its user base since launch, including secure messaging, personalized reading and research recommendations, recruiting tools, and an accredited continuing education program. It aims to increase cooperation between doctors by simplifying and streamlining communication and networking between them through the site.

Since its last round of funding in 2012, Doximity has more than tripled its user base, with at least one in three U.S. doctors as members of the network — about 40 percent to be exact.

Draper Fisher Jurvetson and T. Rowe Price Associates led the current round, with additional funding from Morgan Stanley Investment Management and current investors Emergence Capital Partners, Morgenthaler Ventures, and InterWest Partners.

“For an early stage company, Doximity has demonstrated mature revenue and a clear path forward towards long-term success. Healthcare is not a niche, it’s a sector, and as a sector it’s incredibly large. It’s exciting to see Doximity bringing the best of social media to this significant market,” said T. Rowe Price Associates portfolio manager Henry Ellenbogen in an official statement.

The company says it plans to use the funding to continue to grow, especially to include other medical professionals such as nurses and to grow internationally. It also wants to continue to build out the product and fulfill more of their users’ needs, such as verifying and displaying credentials, which are a huge pain problem for doctors, the company said.

Doximity is one of the many “vertical networks” that have been emerging beyond the ubiquitous LinkedIn, from Edmodo for teachers to Avvo for lawyers and SpiceWorks for IT employees.

Interestingly, LinkedIn cofounder and current Earlybird Venture Capital partner Konstantin Guericke has been on Doximity’s board for about two years.

“One thing that was exciting [about Doximity] has been the fact that this really impacts the lives of people,” Guericke told VentureBeat.

Guericke also said that Doximity’s focus on a single industry allows it to build a product very tailored to that group’s needs, providing more value in areas more general networks such as LinkedIn cannot. Although he doesn’t believe LinkedIn et al. will go away, he does think professionals will be spending more and more time on their respective vertical networks.

Guericke also pointed to marketplace verticals such as Zillow for real estate and Elance for freelancers, which he believes offer better values than, say, general purpose marketplace Craigslist.

“Focusing on one area you can do a much better job,” he said.

Doximity is not the only player in the medical social network field. QuantiaMD, which launched in 2004 and has raised a total of $63 million, is also a social network for healthcare professionals aimed at increasing collaboration on difficult cases and learning from peers.

Doximity was founded in 2011 by Jeff Tangney and Nate Gross, and is based in San Mateo, Calif. This new round brings the company’s total to $81.8 million.

How Doximity's user profiles are designed to highlight the information most important to doctors.

Above: How Doximity’s user profiles are designed to highlight the information most important to doctors.

Image Credit: Doximity
More information:

Emergence Capital Partners, based in San Mateo, Calif., is the leading venture capital firm focused on early and growth-stage Enterprise SaaS companies. Its mission is to help build market leaders in partnership with great entrepreneur... read more »

Doximity is an online professional network for U.S. physicians. Launched in March 2011, Doximity has over 250,000 verified physician members as of January 2014. Doximity offers a searchable directory of all U.S. physicians as well as H... read more »

InterWest Partners is a diversified venture capital firm based in Silicon Valley. Our business is about helping entrepreneurs — the people who change the way we live and work by creating new products and services — convert their id... read more »

Morgenthaler Ventures is a premier venture capital firm, dedicated to helping entrepreneurs build valuable companies for more than 40 years. Morgenthaler has invested in more than 300 companies in the information technology and life sc... read more »

Jeffrey A. Tangney, Jeff founded Doximity, Inc. in 2010 and serves as its Chief Executive Officer. Mr. Tangney also serves as an Advisor at Rock Health. Prior to that, he co-founded Epocrates Inc. in 1998 and served as its President & ... read more »

r. Konstantin Guericke is a Partner at Earlybird Venture Capital GmbH & Co. KG. He had been a Venture Partner at the firm since joining it on May 16, 2012. Prior to this, he served as the Chief Executive Officer at Jaxtr Inc. from 2006... read more »

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