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Anesthesia Associates of Ann Arbor (A4) - St. Joseph Mercy

Anesthesia Associates of Ann Arbor (A4) - St. Joseph Mercy Logo

Founded in 1968 by two physicians and headquartered in Ann Arbor, Michigan, Anesthesia Associates of Ann Arbor (A4) is the largest provider of anesthesia and pain management services in the State of Michigan. A4 attributes its ongoing growth and success to a keen focus on delivering top quality, cutting-edge health care to patients while providing a high degree of engagement and customer service to its health system partners. 
With over 120 physician anesthesiologists and 50 CRNS's, A4 currently provides services to 11 hospitals, six ambulatory surgery centers (ASC's) and four chronic pain management clinics. We provide physician anesthesia coverage for over 150,000 cases annually and performs over 11,000 pain management procedures per year.


Saint Joseph Mercy Health System a welcoming workplace. We take pride in delivering faith-based care at the forefront of medicine. We utilize breakthrough technologies. And we enrich the talents of our team by living our mission, vision and values every day. But there’s another reason why people come here and stay here.
The longevity of our staff is a true testament to the rewarding relationships we build and the achievements we share. Making this an atmosphere of endless opportunity - personally and professionally. Our team members feel recognized and respected for their efforts. That’s because we take the time to invest in their satisfaction and support their aspirations. We pride ourselves on delivering personalized care, but we also treat our employees as unique individuals. Come here and be part of an uplifting culture that fits you in every way.

Ann Arbor is many things, including a bustling university town, culinary hotspot, and a tech hub with a walkable downtown that includes world-class arts and culture. Located in southeast Michigan's Lower Peninsula, Ann Arbor lies at the center of a greater collection of communities in Washtenaw County. With so many thriving communities nearby, Ann Arbor has become a cultural melting pot and urban oasis.