The two Twin Cities-based health care systems plan to merge operations, subject to federal anti-trust approval. Here's a closer look:

HEALTHPARTNERS

Bloomington

70, including 16 dental clinics in the Twin Cities

Regions Hospital in St. Paul

12,000, including 780 doctors and 60 dentists

$3.58 billion, increase of 5.7 percent from 2009

$3.44 billion

$138 million

PARK NICOLLET

St. Louis Park

26, including the Melrose Institute for eating disorders.

Methodist Hospital in St. Louis Park

3,700

$1.23 billion, increase of 0.6 percent from 2009

$1.19 billion

$39 million

Source: Star Tribune research; IRS 990 FormHeadquarters

Hospitals and clinics

Flagship

Employees

2010 revenue

2010 expenses

2010 margin