HackingHealthcareProfessional ServicesHealthcareEmployee Data InvolvedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountPHIHealth (basic)MediumContained

Medical Management Resource Group, L.L.C.

bd_9ade189a9c3aa164 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 14, 2023

Filed

Feb 29, 2024

To disclose

15 weeks

Affected

Not disclosed

Linked

10 filings

Confidence

65%

Full breach record for Medical Management Resource Group, L.L.C. →

Medical Management Resource Group, L.L.C. (d.b.a. American Vision Partners) detected unauthorized activity on its network on November 14, 2023. The incident exposed personal information of employees and patients of affiliated ophthalmology practices, including names, SSNs, medical records, and bank account numbers. The company contained the incident, engaged third-party investigators, and offered two years of credit monitoring.

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California clockDiscovered Nov 14, 2023 → Notified Feb 15, 202493d ✗ CA 60-day late15 weeks discovery → filing

Incident timeline

discovery → filing · 15 weeks / 107 days

Nov 14, 2023

Begins

Nov 14, 2023

Discovered

Feb 29, 2024

Filed

vs. sector median

+3 wks slower

This filing is one of 10 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (9) · sorted by filing gap

Oregon State AGbd_4e04a4942e26df332024-02-29Verified
Maine State AGbd_f877c41e8ddec9762024-02-29Verified
New Hampshire State AGbd_38d89641f60104632024-02-23 · +6dVerified
Vermont State AGbd_91b60a8f11bae7ec2024-02-15 · +14dVerified

Show 5 more filings ↓up to 28d gap

Indiana State AGbd_af0a4dfaa8d752532024-02-15 · +14dVerified
Montana State AGbd_cf67a71df73c00872024-02-15 · +14dVerified
Washington State AGbd_776968d28912f6052024-02-06 · +23dVerified
HHS OCRbd_7b7b956dbf6e412d2024-02-06 · +23dVerified by operator
Illinois State AGbd_666f9f3545487c7d2024-02-01 · +28dCandidate

Name: Medical Management Resource Group, L.L.C.
norm: medical management resource

Name: Medical Management Resource Group, L.L.C.
norm: medical management resource
Also named: Medical Management Resource Group, L.L.C.dba oflegal entity
American Vision Partnersdba oftrade name
Industry: HealthcarellmProfessional Servicesllm

Discovered: Nov 14, 2023
Breach occurred: Nov 14, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 15, 2024
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial accountPHIHealth (basic)
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unknown
Threat actor: External

During the incident: Isolating impacted systems
Launched an investigation with the assistance of leading third-party cybersecurity firms
Coordinated with law enforcement
Offering identity protection and credit monitoring services for two years at no cost
Changes made: Continue to take preventative actions to further safeguard our systems
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 weeks(107 days from discovery to filing)
Compliance flags: CA 60-day late · 93d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Nov 14, 2023
→ Notified: Feb 15, 2024
93d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Nov 14, 2023 → Notified: Feb 15, 2024	93d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 10 filings · 10 states

View merged incident ↗

Illinois State AGFeb 1 · first

Washington State AG+5d

HHS OCR+5d

Vermont State AG+14d

Indiana State AG+14d

Montana State AG+14d

New Hampshire State AG+22d

Oregon State AG+28d

Maine State AG+28d

California State AG+28d · this page

Pattern: first filing Feb 1 (IL), last Feb 29 (CA) — a 28-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://oag.ca.gov/ecrime/databreach/reports/sb24-581744
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 29, 2024
Raw hash: c292ba0e2a1cb9acb1e92e5ba38019c6d7ad7c2a4227581d1eeb022e016773b7

Linked disclosures

Regulatory filings (9) · sorted by filing gap

Reporting entityMedical Management Resource Group, L.L.C.

Victim entityMedical Management Resource Group, L.L.C.

Incidentdiscovered Nov 14, 2023

Stated responseIsolating impacted systems

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov