Sycamore Anesthesia Services, Ltd. Sycamore Anesthesia Services, Ltd. is one of the largest CRNA and anesthesiologist staffing agencies in the Midwest. Although based in Illinois, we specialize in both temporary and permanent placements nationwide. Sycamore Anesthesia Services was established in 1988 by Rodney Griffis, who is a practicing CRNA. Rod also continues to serve as agency administrator. Sycamore Anesthesia Services staffing is very much a “hands on process.” We offer attentive and personalized staffing services while providing competent, professional CRNAs and anesthesiologists who take pride in our quality and service. We believe the only way to operate a business successfully today is to stay close to each and every assignment. And, since Sycamore Anesthesia Services is CRNA-owned and operated, we have an added incentive! Hospitals and groups can now request coverage from our website. Simply fill out the form here.