Southeastern Minnesota Oral & Maxillofacial Surgery

Southeastern Minnesota Oral & Maxillofacial Surgery (SEMOMS) is a healthcare facility that specializes in oral and maxillofacial surgical care. The organization provides surgical treatment for conditions affecting the mouth, jaws, and facial structures. SEMOMS serves patients residing in the southeastern region of Minnesota. Its focus is on delivering surgical interventions within the oral and maxillofacial specialty.

In September 2019, SEMOMS experienced a ransomware attack that affected one of its servers. The incident potentially exposed health information, including patient names and X‑ray images, for approximately 80,000 individuals. Forensic analysis could not confirm whether the data was actually accessed or misused by the attackers. The scale of the potentially affected patient base indicates that the organization serves a substantial number of individuals in its service area.

Following the attack, SEMOMS notified all patients whose information might have been compromised. The organization also initiated a review of its cybersecurity policies and procedures to strengthen defenses against similar threats. No financial data, medical records, or Social Security numbers were reported as affected in the incident. These actions demonstrate the organization's focus on patient transparency and proactive risk management.

The source material does not provide explicit details about SEMOMS's ownership structure or any parent or subsidiary relationships. Consequently, no information is available regarding whether the practice is independently owned, part of a larger group, or affiliated with a healthcare system. This lack of disclosed ownership information limits further description of its corporate structure.

SEMOMS continues to operate as a provider of oral and maxillofacial surgical services in its geographic market. The organization remains attentive to cybersecurity considerations as part of its overall operational practices. Its commitment to safeguarding patient information is reflected in the response measures taken after the 2019 ransomware event.