Eastside Health Center Building B provides healthcare services to the communities of Eastern Riverside. Eastside Health Center Building B offers a wide range of medical services, including expanded services for women’s health. Services are available, regardless of ability to pay. Eastside Health Center Building B is part of Borrego Health, a not-for-profit organization. We accept most insurances. Sliding fee scale is available for those who are uninsured or underinsured. Hablamos español.