Five McLaren Health Care hospitals and three medical clinics are among 169 other health systems affected by the Elekta data breach.
Mount Pleasant, Mich.-based McLaren Central Michigan, Mount Clemens, Mich.-based McLaren Macomb Hospital, Petoskey, Mich.-based McLaren Northern Michigan, McLaren Lapeer (Mich.) Region Hospital, Bay City, Mich.-based McLaren Bay Region and three medical clinics were all affected by the breach.
Between the eight medical facilities belonging to McLaren, 64,600 patients have been potentially exposed.
In addition to patients' breached data, some cancer centers reported halting procedures for weeks because of the incident, according to Fox61.
Here is a list of health systems that have reported breaches stemming from the incident and the number of patients affected, according to HHS' data breach portal:
Northwestern Memorial HealthCare (Chicago): 201,197
Advocate Aurora Health (Downers Grove, Ill., and Milwaukee): 68,707
Renown Health (Reno, Nev.): 65,181
McLaren Health Care (Grand Blanc, Mich.): 64,600
Intermountain Healthcare (Salt Lake City): 28,628
St. Charles Health System (Bend, Ore.): 4,687
Cancer Centers of Southwest Oklahoma (Lawton): 8,000
Saint Peter's University Hospital (New Brunswick, N.J.): 585
Yale New Haven (Conn.) Health: 200+
Emory St. Joseph Hospital (Sandy Spring, Ga.): Unknown
Fairbanks (Alaska) Cancer Center: Unknown
Jefferson Health (Philadelphia): Unknown
Greenwood (Miss.) Leflore Hospital: Unknown
Carle Health (Urbana, Ill.): Unknown
Lifespan (Providence, R.I.): Unknown
Southcoast Health (New Bedford, Mass.): Unknown