HIPAA Journal is the leading provider of news, updates, and independent advice for HIPAA compliance

March 2021 Healthcare Data Breach Report

There was a 38.8% increase in reported healthcare data breaches in March. 62 breaches of 500 or more records reported to the HHS’ Office for Civil Rights, with hacking incidents dominating the breach reports. The high number of reported breaches is largely due to an increase in data breaches at business associates.

Healthcare data breaches in the past 12 months

The number of breached records also increased sharply with 2,913,084 healthcare records exposed or impermissibly disclosed across those 62 incidents; an increase of 135.89% from February.

Breached healthcare records in the past 12 months

Largest Healthcare Data Breaches Reported in March 2021

The table below shows the 25 largest healthcare data breaches to be reported in March, all of which were hacking/IT incidents. 76% involved compromised network servers with the remaining 24% involving breaches of email accounts. 60% of these breaches involved business associates.

Name of Covered Entity Covered Entity Type Individuals Affected Type of Breach Location of Breached Information
Health Net Community Solutions Health Plan 686,556 Hacking/IT Incident Network Server
Health Net of California Health Plan 523,709 Hacking/IT Incident Network Server
Woodcreek Provider Services LLC Business Associate 207,000 Hacking/IT Incident Network Server
Trusted Health Plans, Inc. Health Plan 200,665 Hacking/IT Incident Network Server
Apple Valley Clinic Healthcare Provider 157,939 Hacking/IT Incident Network Server
Saint Alphonsus Health System Healthcare Provider 134,906 Hacking/IT Incident Email
The Centers for Advanced Orthopaedics Healthcare Provider 125,291 Hacking/IT Incident Email
Cancer Treatment Centers of America at Midwestern Regional Medical Center Healthcare Provider 104,808 Hacking/IT Incident Email
SalusCare Healthcare Provider 85,000 Hacking/IT Incident Email
California Health & Wellness Health Plan 80,138 Hacking/IT Incident Network Server
Mobile Anesthesiologists Healthcare Provider 65,403 Hacking/IT Incident Network Server
Trillium Community Health Plan Health Plan 50,000 Hacking/IT Incident Network Server
PeakTPA Business Associate 50,000 Hacking/IT Incident Network Server
Sandhills Medical Foundation, Inc. Healthcare Provider 39,602 Hacking/IT Incident Network Server
ProPath Services, LLC Healthcare Provider 39,213 Hacking/IT Incident Email
BioTel Heart Healthcare Provider 38,575 Hacking/IT Incident Network Server
Healthgrades Operating Company, Inc. Business Associate 35,485 Hacking/IT Incident Network Server
The New London Hospital Association, Inc. Healthcare Provider 34,878 Hacking/IT Incident Network Server
La Clinica de La Raza, Inc. (La Clinica) Healthcare Provider 31,132 Hacking/IT Incident Network Server
Arizona Complete Health Health Plan 27,390 Hacking/IT Incident Network Server
Health Net Life Insurance Company Health Plan 26,637 Hacking/IT Incident Network Server
Colorado Retina Associates, P.C. Healthcare Provider 26,609 Hacking/IT Incident Email
Haven Behavioral Healthcare Business Associate 21,714 Hacking/IT Incident Network Server
Health Prime International Business Associate 17,562 Hacking/IT Incident Network Server
CalViva Health Health Plan 15,287 Hacking/IT Incident Network Server


Causes of March 2021 Healthcare Data Breaches

43 breaches – 69.35% of the month’s total – were the result of hacking/IT incidents such as compromised network servers and email accounts. Hacking incidents accounted for 98.43% of all records breached in March – 2,867,472 records. The average breach size was 66,685 records and the median breach size was 26,609 records.  17 unauthorized access/disclosure incidents were reported in March (27.42% of breaches) and 44,395 records were breached in those incidents – 1.52% of the month’s total. The average breach size was 2,611 records and the median breach size was 1,594 records. There was one theft incident reported involving 500 healthcare records and one loss incident that affected 717 individuals.

Please see the HIPAA Journal Privacy Policy

3 Steps To HIPAA Compliance

Please see HIPAA Journal
privacy policy

  • Step 1 : Download Checklist.
  • Step 2 : Review Your Business.
  • Step 3 : Get Compliant!

The HIPAA Journal compliance checklist provides the top priorities for your organization to become fully HIPAA compliant.

causes of March 2021 healthcare data breaches

Many of the reported breaches occurred at business associates of HIPAA covered entities, with those breaches impacting multiple healthcare clients. Notable business associate data breaches include a cyberattack on Accellion that affected its file transfer appliance. Hackers exploited vulnerabilities in the appliance and stole client files. A ransom was demanded by the attackers and threats were issued to publish the stolen data if payment was not made. The two largest data breaches of the month were due to this incident.

Several healthcare organizations were affected by a ransomware attack on business associate Netgain Technology LLC, including the 3rd and 5th largest breaches reported in March. Med-Data suffered a breach that affected at least 5 covered entities. This incident involved an employee uploading files containing healthcare data to a public facing website (GitHub).


The most common location of breached protected health information was network servers, many of which were due to ransomware attacks or other malware infections. Email accounts were the second most common location of breached PHI, which were mostly accessed following responses to phishing emails.

March 2021 healthcare data breaches - location PHI

Covered Entities Reporting Data Breaches in March 2021

Healthcare providers were the worst affected covered entity with 40 reported breaches and 15 breaches were reported by health plans, with the latter increasing 200% from the previous month. While only 5 data breaches were reported by business associates of covered entities, 30 of the month’s breaches – 48.39% – involved business associates but were reported by the covered entity. That represents a 200% increase from February.

March 2021 healthcare data breaches - breached entity

Distribution of March 2021 Healthcare Data Breaches

There was a large geographical spread of data breaches, with covered entities and business associates in 30 states affected. California was the worst affected state with 11 data breaches reported. There were 5 breaches reported in Texas, 4 in Florida and Massachusetts, 3 in Illinois and Maryland, 2 in each of Arkansas, Arizona, Michigan, Minnesota, Missouri, Ohio, and Pennsylvania, and one breach was reported in each of Alabama, Colorado, Connecticut, Georgia, Idaho, Kansas, Louisiana, Montana, New Hampshire, Nevada, Oregon, South Carolina, Tennessee, Utah, Washington, Wisconsin, and West Virginia.

HIPAA Enforcement Activity in March 2021

The HHS’ Office for Civil Rights announced two further settlements to resolve HIPAA violations in March, both of which involved violations of the HIPAA Right of Access. These two settlements bring the total number of financial penalties under OCR’s HIPAA Right of Access enforcement initiative to 18.

Arbour Hospital settled its case with OCR and paid a $65,000 financial penalty and Village Plastic Surgery settled its case and paid OCR $30,000. Both cases arose from complaints from patients who had not been provided with timely access to their medical records.

Author: Steve Alder is the editor-in-chief of HIPAA Journal. Steve is responsible for editorial policy regarding the topics covered on HIPAA Journal. He is a specialist on healthcare industry legal and regulatory affairs, and has several years of experience writing about HIPAA and other related legal topics. Steve has developed a deep understanding of regulatory issues surrounding the use of information technology in the healthcare industry and has written hundreds of articles on HIPAA-related topics.