Kaiser Permanente is one of the nation's largest not-for-profit health plans, serving 12.9 million members. At Kaiser Permanente, physicians are responsible for medical decisions. The Permanente Medical Groups, which provide care for Kaiser Permanente members, continuously develop and refine medical practices to help ensure that care is delivered in the most efficient and effective manner possible.
Please note this information does not include Risant Health and its affiliates. For more information visit risanthealth.org.
Founded
1945
Headquarters
Oakland, Calif.
Founded in 1945, Kaiser Permanente headquartered in Oakland, California, comprises:
Members1
12.9M
Employees2
225,854
Medical offices3
610
Physicians4
25,270
Hospitals
40
Nurses5
78,630
Northern California
Central Valley
Diablo
East Bay
Fresno
Golden Gate
Greater Sacramento
Greater Southern Alameda County
Napa-Solano
San Mateo
Santa Rosa
South Bay
Southern California
Coachella Valley
Kern County
Inland Empire
Metro Los Angeles/West Los Angeles
Orange County
San Diego County
Tri-Central Area
West Ventura/Valleys
Colorado
Denver
Boulder
Colorado Springs
Fort Collins
Greeley
Loveland
Pueblo
Georgia
Atlanta
Athens
Hawaii
Kauai
Hawaii
Maui
Oahu
Mid-Atlantic States
Baltimore
Washington, D.C.
Northern Virginia
Suburban Maryland
Nevada
Reno–Sparks metro area
Northwest
Portland, Ore.
Eugene, Ore.
Salem, Ore.
Vancouver, Wash.
Longview/Kelso, Wash.
Washington
Northwest Washington
Central Washington
Eastern Washington
Coastal and Olympic Region
Puget Sound
Founded
1945
Headquarters
Oakland, Calif.
Founded in 1945, Kaiser Permanente in Northern California, headquartered in Oakland, comprises:
Members1
4.7M
Employees2
91,154
Medical offices3
203
Physicians4
9,976
Hospitals
21
Nurses5
29,741
Central Valley
Diablo
East Bay
Fresno
Golden Gate
Greater Sacramento
Greater Southern Alameda County
Napa-Solano
San Mateo
Santa Rosa
South Bay
Founded
1945
Headquarters
Pasadena
Kaiser Permanente in Southern California opened to the public in 1953. It is headquartered in Pasadena and comprises:
Members1
5M
Employees2
92,784
Medical offices3
201
Physicians4
8,844
Hospitals
16
Nurses5
36,598
Coachella Valley
Kern County
Inland Empire
Metro Los Angeles/West Los Angeles
Orange County
San Diego County
Tri-Central Area
West Ventura/Valleys
Founded
1969
Headquarters
Denver
Founded in 1969, Kaiser Permanente in Colorado, headquartered in Denver, comprises:
Members1
502,410
Employees2
5,422
Medical offices3
34
Physicians4
1,100
Nurses5
1,513
Denver
Boulder
Colorado Springs
Fort Collins
Greeley
Loveland
Pueblo
Founded
1985
Headquarters
Atlanta
Founded in October 1985, Kaiser Permanente in Georgia, headquartered in Atlanta, comprises:
Members1
449,604
Employees2
3,173
Medical offices3
28
Physicians4
643
Nurses5
857
Atlanta
Athens
Founded
1958
Headquarters
Honolulu
Founded in 1958, Kaiser Permanente in Hawaii, headquartered in Honolulu, comprises:
Members1
275,915
Employees2
4,604
Medical offices3
20
Physicians4
508
Hospital
1
Nurses5
2,253
Kauai
Hawaii
Maui
Oahu
Founded
1980
Headquarters
Washington, D.C.
Founded in 1980, Kaiser Permanente of the Mid-Atlantic States, headquartered in Washington, D.C., comprises:
Members1
744,330
Employees2
8,060
Medical offices3
41
Physicians4
1,768
Nurses5
2,344
Baltimore
Washington, D.C.
Northern Virginia
Suburban Maryland
Founded
2026
Headquarters
Reno, Nev.
Founded in 2026, Kaiser Permanente in Nevada, headquartered in Reno and jointly owned by Kaiser Permanente and Renown Health, is a health plan and outpatient care delivery system in northern Nevada. It is comprised of:
*Currently named Hometown Health Plan, Inc., and Hometown Health Providers Insurance Company, Inc.
Members1
83,757
Employees2
298
Medical office3
2
Reno–Sparks metro area
Founded
1945
Headquarters
Portland, Ore.
Founded in 1945, Kaiser Permanente in the Northwest, headquartered in Portland, Oregon, comprises:
Members1
606,232
Employees2
12,053
Medical offices3
50
Physicians4
1,383
Hospitals
2
Nurses5
3,658
Portland, Ore.
Eugene, Ore.
Salem, Ore.
Vancouver, Wash.
Longview/Kelso, Wash.
Founded
2017
Headquarters
Seattle
Founded in 2017, Kaiser Permanente in Washington is headquartered in the Seattle metro area, and comprises:
Members1
562,812
Employees2
6,601
Medical offices3
31
Physicians4
973
Nurses5
1,490
Northwest Washington
Central Washington
Eastern Washington
Coastal and Olympic Region
Puget Sound
1Data as of June 30, 2026, unless otherwise noted.
2Employee data approximate as of June 30, 2026, representing technical, administrative, and clerical employees, nurses, and non physician caregivers.
3Medical offices and other outpatient facilities as of 10 a.m. on June 30, 2026.
4Approximate as of December 31, 2025, representing all specialties; excluding pool, network, and referral physicians as well as locum tenens.
5Nurse data approximate as of December 31, 2025, representing all specialties.
Data as of June 30, 2026, unless otherwise noted.