HackingHealthcareHealthcareStolen CredentialsCapture App DataCustomer Data InvolvedDelayed DiscoveryPIIIdentity (basic)LowContained

Nephrology Associates Medical Group

bd_69f82657620eeced · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Mar 26, 2026

To disclose

—

Affected

Not disclosed

Confidence

80%

Full breach record for Nephrology Associates Medical Group →2 incidents on file

Nephrology Associates Medical Group, a medical group based in Riverside, CA, discovered suspicious activity in an employee email account on or about May 20, 2025. An unauthorized individual may have accessed personal information stored in the account. The breach dates span May 19–22, 2025. The organization engaged cybersecurity experts, implemented additional security features, and is offering Kroll credit monitoring to affected individuals.

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Incident timeline

May 19, 2025

Begins

Mar 26, 2026

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: Nephrology Associates Medical Group
norm: nephrology associates medical
Domain: namg.net
Industry: Healthcare

Name: Nephrology Associates Medical Group
norm: nephrology associates medical
Domain: namg.net
Industry: Healthcare
Industry: Healthcarellm

Discovered: —
Breach occurred: May 19, 2025 – May 22, 2025
Materiality determined: —
Notification sent: Dec 12, 2025
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Regulator citations: Notified California Attorney General

During the incident: Initiated an investigation upon discovering suspicious activity associated with the email system
Engaged independent cybersecurity experts to assist with the investigation
Worked to obtain contact information for the individuals whose information may have been involved
Implemented additional security features to reduce the risk of a similar event occurring in the future
Offering complimentary credit monitoring and identity protection services through Kroll
Changes made: Implemented additional security features to reduce the risk of a similar event occurring in the future
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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/sb24-620867
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 26, 2026
Raw hash: ca7f70ebb51092d59cc51d7bb1c7b425a8ddde90535cb1b1fb1a5975b6690cb1

Reporting entityNephrology Associates Medical Group

Victim entityNephrology Associates Medical Group

IncidentUnauthorized Access

Stated responseInitiated an investigation upon discovering suspicious activity associated with the email system

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov