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John Muir Medical Group

John Muir Medical Group Vendor Cyber Rating & Cyber Score

johnmuirhealth.com
in
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ISO 27001
SOC 2 Type 1
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Founded in 1996 by 30 local primary care physicians, John Muir Medical Group now comprises more than 350 clinicians who provide primary care services exclusively for the John Muir Physician Network Foundation. John Muir Medical Group staffs a robust hospitalist program, urgent cares and over 35 continuity care sites stretching from Brentwood to Berkeley and Concord to Livermore. John Muir Medical Group strives to improve the health of our community with high quality and compassionate care. In addition, we are dedicated to promoting the well being of our physicians, nurse practitioners, and physician assistants.


JMMG A.I CyberSecurity Scoring

Incident Details
JMMG
Company Information
Website:https://www.johnmuirhealth.com/for-physicians/john-muir-medical-group.html
Employees number:168
Number of followers:1,378
NAICS:62
Industry Type:Hospitals and Health Care
Homepage:johnmuirhealth.com
Cyber Premium EstimationGet Supply Chain
JMMG Risk Score (AI oriented)
Between 750 and 799
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JMMGHospitals and Health Care
Updated:
31/03/2026
759/1000
Fair
Baa
AaaAaABaaBaBCaaCaC
Powered by our proprietary A.I cyber incident model
✖ Insurance prefers TPRM score to calculate premium
JMMG Global Score (TPRM)
xxxx
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JMMGHospitals and Health Care
•••
Score locked
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Findings

JMMG
JMMGFair
Current Score
759Baa (FAIR)
01000
1 incidents
0 avg impact
Incident timeline with MITRE ATT&CK tactics, techniques, and mitigations.
JULY 2026
759Before Incident
JUNE 2026
759Before Incident
MAY 2026
759Before Incident
APRIL 2026
759Before Incident
MARCH 2026
759Before Incident
FEBRUARY 2026
759Before Incident
JANUARY 2026
759Before Incident
DECEMBER 2025
759Before Incident
NOVEMBER 2025
759Before Incident
OCTOBER 2025
759Before Incident
SEPTEMBER 2025
759Before Incident
AUGUST 2025
758Before Incident
NOVEMBER 2013
762Before Incident
Data Leak
01 Nov 2013 • JMMG
John Muir Medical Group

Data Leak May Have Affected Patients at Muir Medical Group IPA

698After Incident
CRITICAL-64
JOH2287722
Data Leak May Have Affected Patients at Muir Medical Group IPA Muir Medical Group patients who received treatment between November 2013 and February 2017 have had their personal information shared without their consent. The information compromised included medical information, such as diagnoses, test results, medication, and other treatment information. It also included names, social security numbers, addresses, and contact details. The company is also offering affected individuals free credit card monitoring services.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Medical information (diagnoses, test results, medication, and other treatment information)NamesSocial security numbersAddressesContact details
DATA BREACH
Medical informationPersonally identifiable informationSensitivity Of Data: HighNamesSocial security numbersAddressesContact details
REFERENCES
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John Muir Medical Group Cyber Scoring History | Rankiteo