Our History

Anaesthesia Associates of Massachusetts, P.C. (AAM) is one of the largest private practice anesthesia groups in New England, employing over 190 anesthesiologists and nurse anesthetists, and providing services to multiple hospitals, surgery centers and office-based practices across Massachusetts.

AAM was founded in 1976 by anesthesiologists practicing at the Deaconess Hospital who shared a vision for an anesthesia practice that centered on the safe, efficient and cost-effective delivery of care.

The AAM founders began by critically examining current clinical practices and developing protocols for safer delivery of care. Their efforts to increase patient safety included developing a set of rules for the delivery of care in the operating room separate from other facets of anesthesia, examining CRNA to physician ratios and developing standards to maintain safety, looking closely at risk management functions and staying abreast of technology to constantly offer patients the safest care options.

As part of AAM’s patient safety legacy, one of its founders, Ellison “Jeep” Pierce, was also the founder of the Anesthesia Patient Safety Foundation (APSF). Pierce inaugurated the APSF in 1984 during his tenure as the President of the American Society of Anesthesiologists (ASA) to “assure that no patient shall be harmed by the effects of anesthesia.”

AAM’s unique structure allows it to branch away from being just an anesthesia practice. Its diversification into safety and business management enables the practice to play an integral role in each of the institutions it serves, engaging its hospitals to become involved in the day to day issues that face them from JCAHO preparation to operating room management



The founders’ vision is apparent in the activities of AAM today. The practice has upheld its commitment to clinical excellence and patient care.

AAM currently provides a full range of anesthesia and perioperative services to:

  • Boston IVF
  • Boston Medical Center
  • Boston Outpatient Surgical Suites
  • Cambridge Hospital
  • Charles River Endoscopy Center`
  • Charlton Memorial Hospital
  • Lawrence Memorial Hospital
  • Melrose-Wakefield Hospital
  • Mount Auburn Hospital
  • New England Baptist Hospital
  • New England Baptist Outpatient Care Center
  • Orthopedic Surgical Center of the North Shore
  • St. Luke’s Hospital
  • Somerville Hospital
  • South Coast Surgicenter
  • Surgery Center of Waltham
  • Whidden Hospital

The practice offers these institutions administration and supervision of surgical anesthesia (including general and epidural services), administration of obstetrical anesthesia services, acute and chronic pain management, and administration of office-based anesthesia services.