McLaren Operational Update - August 27

McLaren Health Care Restores Network, Fully Operational Following Cyberattack

McLaren Health Care is pleased to share that its information technology platforms are restored, and the health system’s clinical and administrative operations are fully functional across Michigan following a cyberattack earlier this month. The restoration process, which was expected to last until the end of the month, was completed ahead of schedule.

With this return to normal operations, all temporary procedures enacted during the disruption have been lifted. Providers at all McLaren Health Care hospitals, Karmanos cancer centers, and outpatient clinics again have access to patients’ electronic medical records. The process of inputting patients’ health records that were manually charted during the disruption into the electronic system began over the weekend and is expected to last several weeks.

As clinical operations were largely maintained as McLaren clinical and IT teams progressed in their network restoration efforts, all patients and communities served by McLaren facilities are encouraged to seek care as they normally would.

  • All emergency departments are open, accepting patients and receiving all conditions arriving via emergency medical service. (A complete list of locations can be found at mclaren.org/ER.)
  • Patients can schedule outpatient diagnostic imaging procedures. (A complete list of locations can be found at mclaren.org/imaging.)
  • Surgeries are proceeding as planned and any postponed elective surgeries have been or are currently being rescheduled.
  • All radiation therapy units at Karmanos Cancer Institute facilities remain operational.
  • McLaren Stroke Network is fully operational, including McLaren’s two Comprehensive Stroke Centers (McLaren Flint and McLaren Macomb).
  • Primary and specialty care offices are operational, and patients can make appointments.

McLaren Health Care leadership extends its sincere gratitude to its patients for their understanding, assistance, and patience as its teams worked tirelessly and diligently to fully restore its network. Special recognition is also owed to the extraordinary commitment, dedication, and resilience demonstrated by McLaren team members, whose exemplary efforts throughout the cyberattack have been inspiring.

McLaren is continuing its work with cybersecurity experts to determine what, if any, patient or employee information was compromised. If it is determined that any protected health information (PHI) or personal information was compromised, those individuals will be contacted directly.

Health Care Cyber Events Increasing Nationwide

Cyberattacks on the health care sector nearly doubled between 2022 and 2023. There are currently more than 700 active hacking cases under investigation by the U.S. Department of Health and Human Services’ Office of Civil Rights (OCR), which also reports a 278 percent increase in large breaches involving ransomware from 2018 to 2022.

McLaren continues to make progress toward fully restoring its operations following this current criminal cyber attack. While clinical and information technology teams diligently work with cyber security experts to assess the extent of the impact of the current cyber attack, McLaren hospitals and clinics remain largely operational, and it remains a priority of ours to ensure the latest updates are effectively communicated to our patients and communities we serve so they can get the safe, high-quality care they need when they need it.

Please continue to visit mclaren.org/cyberupdates for the latest updates.

Current Patient Guidelines

Patients are requested to bring the following information to their appointment:

  1. A list of current medications or empty prescription bottles

  2. Printed physician orders for imaging studies or treatments 

  3. Printed results of recent lab tests available in the patient portals 

  4. A list of allergies

  5. Patients in need of an outpatient imaging study can temporarily schedule their appointments through their local McLaren imaging departments. A complete list of McLaren imaging locations can be found by clicking here.

Frequently Asked Questions

Diagnostic Imaging Locations

Locations are ordered by City

  • Karmanos Cancer Institute at McLaren Thumb Region
    Bad Axe
    989-269-5786
  • Diagnostic Imaging - McLaren Thumb Region
    Bad Axe
    (989) 269-9521
  • Women's Imaging Center - McLaren Thumb Region
    Bad Axe
    (989) 269-1565
  • Diagnostic Imaging - West Side Medical Mall
    Bay City
    (989) 667-2870
  • Bay Diagnostic Center - West Campus
    Bay City
    (800) 625-2736
  • Diagnostic Imaging - McLaren Bay Region
    Bay City
    (800) 625-2736
  • Karmanos Cancer Institute at McLaren Bay Region
    Bay City
    989-667-2370
  • Cardiac & Neuro Testing - Bay City
    Bay City
    (989) 894-6482
  • Occupational Health & Convenient Care Center - McLaren Bay Region
    Bay City
    (989) 393-2850
  • Imaging Services - McLaren Caro Region
    Caro
    (989) 672-5111
  • Imaging Services - McLaren Caro Region - West Caro Road
    Caro
    (989) 672-5111
  • Imaging - Cheboygan Campus
    Cheboygan
    (800) 625-2736
  • McLaren Breast Center - Clarkston
    Clarkston
    (800) 625-2736
  • Karmanos Cancer Institute at McLaren Clarkston
    Clarkston
    248-922-6650
  • McLaren Clarkston - Diagnostic Imaging
    Clarkston
    (800) 625-2736
  • Breast Center Imaging - McLaren Macomb - Clinton Township
    Clinton Township
    (800) 625-2736
  • Harrington Medical Center
    Clinton Township
    (586) 323-4560
  • Imaging Services - Harper Professional Building - Karmanos Detroit
    Detroit

  • Karmanos Cancer Institute - Detroit Headquarters
    Detroit
    800-527-6266
  • Karmanos Cancer Institute at Weisberg Cancer Center - Farmington Hills
    Farmington Hills
    800-527-6266
  • Imaging at McLaren Fenton
    Fenton
    810-496-2430
  • McLaren Flint - MRI
    Flint
    (810) 235-9311
  • Karmanos Cancer Institute at McLaren Flint
    Flint
    810-342-3800
  • McLaren Imaging Center - Flint
    Flint
    (810) 342-4800
  • Radiology - McLaren Greater Lansing Grand Ledge Radiology
    Grand Ledge
    (517) 626-3106
  • Imaging - Gaylord
    Indian River
    (231) 844-3045
  • McLaren Greater Lansing Comprehensive Breast Services Clinic
    Lansing
    (800) 625-2736
  • Multi Specialty Clinic - McLaren Greater Lansing
    Lansing
    (517) 975-8910
  • McLaren Greater Lansing - Mid-Michigan Physicians Imaging Center
    Lansing
    (800) 625-2736
  • McLaren Greater Lansing Imaging
    Lansing
    (800) 625-2736
  • MSU Health Care at McLaren Greater Lansing Breast Imaging Center
    Lansing
    (517) 975-6425
  • MSU Health Care at McLaren Greater Lansing Outpatient Imaging Center
    Lansing
    (517) 975-8930
  • McLaren Greater Lansing Imaging Center
    Lansing
    (800) 625-2736
  • Diagnostic Imaging - McLaren Lapeer Region
    Lapeer
    (800) 625-2736
  • Karmanos Cancer Institute at McLaren Lapeer Region
    Lapeer
    800-527-6266
  • DEXA Bone Scan - McLaren Lapeer Region
    Lapeer
    (810) 667-5990
  • McLaren MRI - Lapeer Region
    Lapeer
    (810) 667-5561
  • Diagnostic Imaging - McLaren Lapeer Region Medical Office Building
    Lapeer
    810-664-4532
  • Mammography - McLaren Lapeer Region
    Lapeer
    (810) 667-5990
  • Nuclear Medicine - McLaren Lapeer Region
    Lapeer
    (810) 667-5743
  • Diagnostic Imaging & Breast Care - McLaren Macomb - Bay River
    Lenox
    (800) 625-2736
  • Diagnostic Imaging - McLaren Macomb - Richmond/Lenox
    Lenox Township
    (800) 625-2736
  • Karmanos Cancer Institute at The Toledo Clinic Cancer Center
    Maumee
    800-527-6266
  • Imaging Services - McLaren Bay Region - Midland
    Midland
    (989) 794-4020
  • Karmanos Cancer Institute at McLaren Macomb
    Mount Clemens
    586-493-7510
  • Karmanos Cancer Institute at McLaren Central Michigan, Morey Cancer Center
    Mount Pleasant
    989-772-6811
  • Breast Center Imaging - McLaren Macomb - Hospital Campus
    Mt Clemens
    (800) 625-2736
  • Diagnostic Imaging - McLaren Macomb Campus
    Mt Clemens
    (800) 625-2736
  • McLaren MRI - Central Michigan
    Mt Pleasant
    (989) 772-6734
  • Diagnostic Imaging - McLaren Central Michigan
    Mt Pleasant
    (800) 625-2736
  • Bone Densitometry
    Mt Pleasant
    (989) 779-5238
  • Mammography - McLaren Central Michigan
    Mt Pleasant
    (800) 625-2736
  • Diagnostic Imaging - McLaren Oakland - Oxford
    Oxford
    (800) 625-2736
  • Imaging - McLaren Northern Michigan - Petoskey
    Petoskey
    (800) 625-2736
  • Karmanos Cancer Institute at McLaren Northern Michigan, Petoskey
    Petoskey
    231-487-3390
  • Diagnostic Imaging - McLaren Oakland Pontiac
    Pontiac
    (800) 625-2736
  • Breast Imaging Center - McLaren Port Huron
    Port Huron
    (810) 985-2663
  • Diagnostic Imaging - McLaren Port Huron
    Port Huron
    (810) 989-3270
  • Karmanos Cancer Institute at McLaren Port Huron
    Port Huron
    810-982-5200
  • PET Scan - McLaren Port Huron
    Port Huron
    (810) 989-3270
  • Breast Care Center - McLaren Port Huron
    Port Huron
    (810) 985-2663
  • Imaging - Rogers City
    Rogers City
    989-734-2171
  • Diagnostic Imaging - McLaren Macomb - Shelby Creek Medical Center
    Shelby Township
    (800) 625-2736
  • Imaging Services - McLaren Bay Region - West Branch
    West Branch
    (989) 516-5080
  • Diagnostic Imaging - Yale Community Health Center - McLaren Port Huron
    Yale
    (810) 387-3211

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