Almeida Law Group is investigating a data breach at Mountain Rheumatology Professional, LLC. If you were affected, contact Almeida Law Group.
About Mountain Rheumatology Professional, LLC
Mountain Rheumatology Professional, LLC — doing business as Mountain Rheumatology — is a medical group practice based in Denver, Colorado that specializes in rheumatology, including the diagnosis and treatment of musculoskeletal and systemic autoimmune conditions such as arthritis and fibromyalgia. The practice has two physicians covering internal medicine and rheumatology, with a primary office at 4500 E 9th Ave, Suite 500S in Denver and a secondary location at 1805 Kipling St in Lakewood, Colorado. Because the practice provides medical care, it handles sensitive patient health information protected under federal law.
What Happened?
Mountain Rheumatology Professional, LLC was listed in an HHS Office for Civil Rights breach portal report submitted on August 14th, 2026. The incident was classified as a hacking/IT incident involving the practice’s network server, and it affected 5,378 individuals. No business associate was identified as involved. The HHS filing does not specify what types of personal or health information were compromised.
As of September 2nd, 2026, no public breach notification letter, press coverage, ransomware group claim, or class action litigation related to this incident had been identified in publicly available sources. The incident appears to have been reported to federal regulators only recently, which may explain the limited public information available at this time.
Key Facts at a Glance
- Company or Organization: Mountain Rheumatology Professional, LLC (d/b/a Mountain Rheumatology)
- Industry: Healthcare Provider — Rheumatology / Internal Medicine
- Location: Denver, Colorado (with a secondary office in Lakewood, CO)
- Incident type: Hacking/IT Incident — Network Server
- Date breach discovered: August 14th, 2026
- Date of consumer notification: August 14th, 2026
- Total persons affected: 5,378
- Source: HHS OCR Breach Portal — Mountain Rheumatology Professional, LLC; Healthgrades — Mountain Rheumatology, Denver, CO
What Should You Do?
If you believe you were affected by this breach, start by reviewing any Explanation of Benefits statements and medical records you receive from Mountain Rheumatology or your health insurer for any services or charges you do not recognize. Consider placing a fraud alert or credit freeze with the three major credit bureaus — Equifax, Experian, and TransUnion — and monitor your financial accounts and credit reports closely. You can request free annual credit reports at AnnualCreditReport.com. If you suspect your information has been misused, report it and get a recovery plan at IdentityTheft.gov.
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.
