Founded in 1945, Kaiser Permanente headquartered in Oakland, California, comprises:

• Kaiser Foundation Health Plan, Inc.
  
• Kaiser Foundation Hospitals and its subsidiaries
• The Permanente Medical Groups

Founded in 1945, Kaiser Permanente Northern California, headquartered in Oakland, comprises:

• Kaiser Foundation Health Plan, Inc.
• Kaiser Foundation Hospitals
• The Permanente Medical Group, Inc., a physician group practice

Local Markets

Central Valley
Diablo
East Bay
Fresno
Greater San Francisco
Greater Southern Alameda
Marin/Sonoma
Napa/Solano
Redwood City
Roseville
Sacramento
San Jose
Santa Clara
Santa Cruz
South Sacramento

Founded in 1945, Kaiser Permanente Southern California, headquartered in Pasadena, comprises:

• Kaiser Foundation Health Plan, Inc.
• Kaiser Foundation Hospitals
• Southern California Permanente Medical Group, a physician group practice

Local Markets

Coachella Valley
Kern County
Inland Empire
Metro Los Angeles/West Los Angeles
Orange County
San Diego County
Tri-Central Area
West Ventura/Valleys

Founded in 1969, Kaiser Permanente Colorado, headquartered in Denver, comprises:

• Kaiser Foundation Health Plan of Colorado
• Colorado Permanente Medical Group, P.C., a physician group practice

Local Markets

Denver
Boulder
Colorado Springs
Fort Collins
Greeley
Loveland
Pueblo

Founded in October 1985, Kaiser Permanente Georgia, headquartered in Atlanta, comprises:

• Kaiser Foundation Health Plan, Inc.
• The Southeast Permanente Medical Group, a physician group practice

Local Markets

Atlanta
Athens

Founded in 1958, Kaiser Permanente Hawaii, headquartered in Honolulu, comprises:

• Kaiser Foundation Health Plan, Inc.
• Kaiser Foundation Hospitals
• Hawaii Permanente Medical Group, a physician group practice

Local Markets

Kauai
Hawaii
Maui
Oahu

Kaiser Permanente acquired the Georgetown Community Health Plan in 1980, and began working with existing community hospitals. In 1984, the region opened its first pharmacy and officially changed its name to Kaiser Foundation Health Plan of the Mid-Atlantic States.

Founded in 1980, Kaiser Permanente of the Mid-Atlantic States, headquartered in Washington, D.C., comprises:

• Kaiser Foundation Health Plan of the Mid-Atlantic States, Inc.
• Mid-Atlantic Permanente Medical Group, P.C., a physician group practice

Local Markets

Baltimore
Washington, D.C.
Northern Virginia
Suburban Maryland

Kaiser Permanente’s history in the Pacific Northwest goes back to the medical group established to serve workers and their families during construction of Grand Coulee Dam in northeastern Washington in the late 1930s. During World War II, those physicians served workers and their families at the Kaiser Shipyards in Portland, Oregon, and Vancouver, Washington. With the closing of the shipyards in 1945, enrollment was opened to the community.

Founded in 1945, Kaiser Permanente Northwest, headquartered in Portland, Oregon, comprises:

• Kaiser Foundation Health Plan of the Northwest
• Kaiser Foundation Hospitals
• Northwest Permanente, P.C., Physicians and Surgeons, a physician group practice
• Permanente Dental Associates, a dentist group practice

Local Markets

Portland, Ore.
Eugene, Ore.
Salem, Ore.
Vancouver, Wash.
Longview/Kelso, Wash.

Kaiser Permanente extended its reach in the state of Washington in 2017 with its acquisition of Group Health Cooperative, founded in 1947, and its subsidiaries.

Kaiser Permanente Washington is headquartered in the Seattle metro area, and comprises:

• Kaiser Foundation Health Plan of Washington
• The Washington Permanente Medical Group, P.C., a physician group practice

Local Markets

Northwest Washington
Central Washington
Eastern Washington
Coastal and Olympic Region
Puget Sound