OSIS is a non-profit technology services organization representing the nation's largest and most successful network of NextGe ... n Health Centers. To strengthen the NextGen experience, we share commonalities that drive innovation and efficiency. OSIS has developed a series of solutions and tools to manage patient populations, reduce documentation time while capturing quality measures, embrace PCMH, and report on the factors that drive your organization. Our mission is to ensure that your investment in NextGen is realized. read more