Schedule. Saturday-Wednesday (Weekends are Required) 8:30am-5:00pm. Summerfield Post Acute Rehab. is a preferred provider of. POST ACUTE REHAB. services in Santa Rosa, CA. We have a solid reputation in the community with a long history of success and we need the best of the best to join us on our pursuit of excellence. We are currently looking for an enthusiastic and motivated individual to fill a key administrative position working with our Soci...