Almeida Law Group is investigating a data breach at Park Dental Partners, Inc. The breach occurred on August 26th–27th, 2026 and was discovered on October 7th, 2026. If you were affected, contact Almeida Law Group.
About Park Dental Partners, Inc.
Park Dental Partners, Inc. (NASDAQ: PARK) is the largest Minnesota-based provider of business and nonclinical support to general and multi-specialty dental practices. Formed in October 2023 through a merger of Park Dental and The Dental Specialists, the company supports over 220 affiliated doctors across approximately 88 practice locations in Minnesota, Wisconsin, and Arizona. It employs more than 1,000 hygienists, dental assistants, and patient care coordinators, and traces its roots to a dental practice group founded in 1972. The company is headquartered in Roseville, Minnesota.
What Happened?
Park Dental Partners, Inc. was listed in a Texas Attorney General data security breach report. According to that filing, unauthorized access to the company’s computer network occurred on August 26th and 27th, 2026, and the breach was confirmed as involving data acquisition on October 7th, 2026. The compromised information included names, medical information, health insurance information, and dates of birth. A total of 1,276,335 individuals were affected. Consumers were notified by U.S. Mail.
Park Dental Partners disclosed the incident publicly in an SEC Form 8-K filed September 1st, 2026, reporting that unauthorized network access had been identified on August 28th, 2026. A follow-up SEC filing on October 7th, 2026 confirmed that data was subject to unauthorized acquisition. On October 1st, 2026, the Chaos ransomware group claimed to have listed parkdental.com on its dark web leak site, alleging 275 GB of exfiltrated data — however, this remains an unverified attacker allegation. Neither of Park Dental Partners’ SEC filings names an attacker, uses the word “ransomware,” or references a ransom demand, and neither the company nor any regulator has confirmed the Chaos group’s claim. This is also the company’s second known breach: a prior incident discovered in January 2024 involved unauthorized access to employee email accounts and affected more than 277,000 patients. That earlier breach led to consolidated class action litigation and a settlement. Regarding the current August 2026 breach, four putative class action lawsuits have been filed in Minnesota state court — the first on September 3rd, 2026 — alleging the company failed to safeguard patients’ protected health information and implement reasonable security measures. Plaintiffs moved on October 7th, 2026 to consolidate the cases and appoint interim lead class counsel.
Key Facts at a Glance
- Company or Organization: Park Dental Partners, Inc.
- Industry: Healthcare – Dental Service Organization (DSO) / Medical Care Facilities
- Location: Roseville, Minnesota 55113
- Incident type: Unauthorized access to computer network; data acquired without authorization
- Date of breach: August 26th, 2026 – August 27th, 2026
- Date breach discovered: October 7th, 2026
- Date of consumer notification: November 6th, 2026 (published at OAG website); consumers notified by U.S. Mail
- Total persons affected: 1,276,335
- Prior breach: Yes — January 2024 email breach affecting 277,109 patients; resulted in consolidated class action litigation and settlement
- Litigation status: Four putative class action lawsuits filed in Minnesota state court; consolidation motion filed October 7th, 2026; cases include Julienne Wyckoff v. Park Dental Partners, Inc. and Becky Murphy and Debbie Palm v. Park Dental Partners, Inc. (62-CV-26-7111)
- Source: Texas Attorney General Data Security Breach Report; Park Dental Partners SEC Form 8-K (October 7th, 2026); Park Dental Partners SEC Form 8-K (September 1st, 2026); Rallies.ai – Four Minnesota Class Actions; Cypro.co.uk – Chaos Ransomware Claim Analysis
What Should You Do?
If you received a notice from Park Dental Partners, Inc., take steps now to protect yourself. Because medical information, health insurance information, names, and dates of birth were exposed, review your Explanation of Benefits statements and request a copy of your medical records to check for any services you do not recognize. Place a fraud alert or credit freeze with the three major credit bureaus — Equifax, Experian, and TransUnion — to help prevent new accounts from being opened in your name. Monitor your existing accounts closely and obtain your free credit reports at AnnualCreditReport.com. If you believe you are already a victim of identity theft, report it at IdentityTheft.gov for a personalized recovery plan.
Your Legal Rights
If your personal or health information was involved in this breach, you may have legal rights depending on the facts of the incident and the law in your state. Almeida Law Group represents consumers in data breach and privacy litigation and can help you evaluate whether you may have a claim. Contact us at (708) 529-5418 or through our contact page for a free case evaluation.
