McKesson Corporation Data Breach Lawsuit Investigation

Stueve Siegel Hanson, a national leader in data breach and privacy cases, is investigating potential claims against McKesson Corporation (“McKesson”) resulting from a data breach involving protected personal and health information. McKesson is large pharmaceutical, health information technology, and medical supply company in the United States.

In August 2026, McKesson disclosed that they were investigating a data breach where hackers were able to infiltrate its systems. The information compromised includes: names, addresses, dates of birth, Social Security numbers, patient IDs, phone numbers, email addresses, Medicaid numbers, medical record numbers, medication and allergy information, illnesses, disabilities, appointment information, and physician information.

If you receive a notification that your personal information may have been compromised in this breach, please contact attorney Tanner Edwards at 816-714-7122, tanner@stuevesiegel.com, or fill out a contact form below.