Mary Bryngelson was named executive VP of business development for ACM (Minneapolis). Bryngelson previously headed up the Minnesota Business Unit of American Healthways. ACM is a healthcare benefits management company.

David Cordani was named president/COO of Cigna (Philadelphia). Cordani joined CIGNA in 1991 and prior to his appointment as president of CIGNA HealthCare served as president of Health Segments for CIGNA HealthCare and as senior VP/CFO of CIGNA HealthCare. CIGNA's operating subsidiaries offer a full portfolio of medical, dental, behavioral health, pharmacy and vision care benefits and group life, accident and disability insurance.

• C. R. Bard (Murray Hill, New Jersey) said Sharon Alterio has been promoted to group VP with responsibility for Bard's international businesses, effective Dec. 1. Sharon replaces Amy Paul, who will retire from Bard at the end of the year. Alterio joined Bard in 2004 as president of Bard Medical Division. C.R. Bard specializes in vascular, urology, oncology and surgical specialty products.

Allen Nissenson, MD, was named chief medical officer of DaVita (El Segundo, California). Nissenson is professor of medicine, associate dean and director of the dialysis program at UCLA's David Geffen School of Medicine. DaVita makes kidney care products.

Robert Herbst was named general counsel and secretary of Health Systems Solutions (New York). He most recently was general counsel at Town Sports International. Health Systems Solutions is a software and technology company.

Sumant Ramachandra, MD, PhD, was named senior VP and chief scientific officer of Hospira (Lake Forest, Illinois). Most recently, Ramachandra was VP and senior project leader of global development for Schering-Plough Research Institute. Hospira is a pharmaceutical and medication delivery company.