Park Dental Partners, Inc. posted a patient notice in early November 2026 and filed with the Texas attorney general on 6 November. The catalog entry now records 1,276,335 people, including 2,481 Texans. The company says an unauthorised party accessed its network on 26 and 27 August 2026. A review of what personal information may have left finished on 7 October. Mail notices to affected people began on or about 6 November. The helpline on the letter is 888-517-6470. An earlier SEC 8-K had described the same event without a people count. This catalog row is that incident with the census filled in, not a second breach.
The letter lists names and one or more of date of birth, treatment or diagnosis information, and health-insurance policy information. The company said it had not received reports of identity fraud tied to the event as of the letter. That is a snapshot, not a promise that fraud will never appear.
What happened in the Park Dental data breach?
Someone reached the network in late August. Park Dental hired specialists, notified law enforcement, and spent weeks matching files to people. The October 7 date in the letter is when that matching was far enough along to start notice, not when the access began. The SEC 8-K around 13 October had already told investors that operations continued. Patients did not get a count until the November AG filings and the PDF on the company site.
Dental groups hold a mix of identity and clinical data. A file with names, dates of birth and treatment notes is useful for medical-identity fraud and for phishing that quotes a real clinic. It is in the same class as the EyeMed Vision Care notice and the Amplifon USA census, not a points-programme email leak. Do not treat the 1.28 million figure as unique Social Security numbers. The published letter does not list SSNs in the field set we have.
If a ransomware group later posts a Park Dental folder, treat that post as unverified until the company or a regulator matches it. The current row is the company-and-AG notice.
What data was exposed?
Texas AG: 1,276,335 people. Company letter: names, and for some people date of birth, treatment or diagnosis information, and health-insurance policy information. Fields vary. The letter does not publish a full inventory of every clinic system. If your letter names extra fields, those extra fields are the ones that apply to you.
1,276,335 replaces the earlier catalog value of 0, which existed because the August 8-K had no census. Keep the same breach id.
Who is affected?
Patients and others whose information sat on the accessed network, as matched by 7 October. That can include people who have not visited a Park Dental clinic recently. Texas residents are a slice (2,481), not the whole file. If you receive a letter that matches the PDF on parkdentalpartners.com, you are in the notified set. If you are a patient and hear nothing, wait for mail; the company is writing in sequence.
What should I do?
- Read the letter. Call 888-517-6470 only from the number printed on that letter or on the company PDF, not from a search-ad.
- If the letter offers credit monitoring, enrol through the official portal named in the letter.
- Watch Explanation of Benefits mail for dental claims you did not start.
- Treat "your Park Dental bill is overdue, pay here" messages as hostile unless they match a statement you already expected.
- Keep the letter with any later clinical-record request. The 1,276,335 figure is the one to cite.
The EyeMed November post is the same patient-mail problem: official letters and copycat clinic bills arrive in the same week. The Amplifon USA post is the same large health-census shape.
Frequently asked questions
How many people were affected?
1,276,335, from the Texas attorney general filing dated 6 November 2026. 2,481 of them are Texans.
When did the access happen?
26 to 27 August 2026. The company finished its review of what information may have been involved on 7 October.
Were Social Security numbers included?
The company letter we have lists names, dates of birth, treatment or diagnosis information and health-insurance policy information. It does not list SSNs. If your own letter names an SSN, believe your letter.
Is this a new attack in November?
No. November is when patients were notified. The network access was in August.
What number should I call?
888-517-6470, from the company notice. Do not call a number that arrived only in a text message.
Sourcing note: the 1,276,335 total, the August dates, the 7 October review date and the field list come from the Park Dental Partners notice PDF and the Texas AG listing.