Madison, Wisconsin-based Redox, a company founded by former Epic engineers that makes an API for integrating software with EHRs, has raised $3.5 million in a round led by .406 Ventures. Flybridge Capital Partners and HealthX Ventures also contributed to the round.

The company is attempting to address a major pain point in developing software for hospitals: integration and interoperability with electronic health records. It sells to both health systems and vendors with cloud-based applications. For the former, Redox acts as a dashboard that simplifies access to different cloud-based services, while for the latter it helps speed and reduce the cost of implementing their systems, making it easier to sell hospitals on them.

"Redox believes that one of the biggest issues holding back innovation in the health-tech space is how to access all of the incredibly valuable data that resides in different EHR systems across the health care landscape," Luke Bonney, co-founder of Redox, said in a statement. "There are endless opportunities to use data from electronic health records to improve patient care and provide efficiency to healthcare providers. It's our mission at Redox to accelerate the adoption of great technology in healthcare, to get it into the hands of physicians and patients, by removing EHR integration as a key barrier."

Redox works with Epic, Cerner, Allscripts, athenahealth and a number of other EHRs. It's currently integrated with 120 applications, including those from tablet-based waiting room check-in company Phreesia, medical translator and monitoring device maker Phrazer, and appointment scheduling software Clockwise.MD. Use cases for apps connected to Redox include care coordination, telehealth, medication adherence, patient engagement, chronic care, and disease management, according to Redox.

"The proliferation of EHRs has been very valuable in supporting providers' internal administrative functions. But in order to realize the true promise of digital health information, data must be able to flow seamlessly between EHRs and other applications," Liam Donohue, managing partner of .406 Ventures, said in a statement. " ... The founders [of Redox] who previously worked together at Epic, lived the issue first-hand and have done an exceptional job building a world-class team and product suite to allow customers and patients to unlock the full potential of their technology."