Each of these two hospitals have a large "cottage industry" of medical support offices nearby. Kaiser Permanente does not have a hospital in Vancouver but does have a wide range of medical offices conveniently located around the city. There has been talk in recent years of Kaiser building a hospital in the Vancouver area to support their growing numbers in the region.
The Vancouver Clinic is a large regional network of clinics all across the city, Clark County and now even Multnomah county offering a wide range of medical services and accepting most insurance.
The Veterans Administration operates a campus at Fort Vancouver which includes a small hospital and most VA services locally. There is a major VA hospital nearby in Portland.
The Vancouver area offers retirees a wide variety of health care options that combined with Washington's favorable taxation for retirees makes the area highly desirable.