Healthcare exchanges in New England shared users' sensitive health data with companies like Google

Boston Globe

17-06-2025

The exchange websites ask users to answer a series of questions, including about their health histories, to find them the most relevant information on plans. But in some cases, when visitors responded to sensitive questions, the invisible trackers sent that information to platforms like Google,
Advertisement
The Markup and CalMatters audited the websites of all 19 states that independently operate their own online health exchange. While most of the sites contained advertising trackers of some kind, The Markup and CalMatters found that four states exposed visitors' sensitive health information.
Nevada's exchange, Nevada Health Link, asks visitors about what prescriptions they use, including the names and dosages of the drugs, to help them find their best options for health insurance. When visitors start typing, it suggests specific medications, including antidepressants, birth control and hormone therapies.
As visitors answered the questions, their responses were sent to LinkedIn and Snapchat, according to tests conducted by The Markup and CalMatters in April and May.
When an individual indicated that they took Fluoxetine, commonly known as Prozac, on Nevada Health Link, the information was sent to LinkedIn.
The Markup/CalMatters
On the other side of the country, Maine's exchange, CoverME.gov, sent information on drug prescriptions and dosages to Google through an analytics tool. It also sent the names of doctors and hospitals that people had previously visited.
Advertisement
Rhode Island's exchange, HealthSource RI, sent prescription information, dosages, and doctors' names to Google.
Massachusetts Health Connector, another exchange, told LinkedIn whether visitors said they were pregnant, blind, or disabled.
After being contacted by The Markup and CalMatters, Nevada's health exchange stopped sending visitors' data to Snapchat and Massachusetts stopped sending data to LinkedIn. Additionally, The Markup and CalMatters found that Nevada stopped sending data to LinkedIn in early May, as we were testing.
The Markup and CalMatters discovered the sharing after finding that California's exchange, Covered California,
Experts said state health exchanges' use of advertising trackers was troubling if not entirely surprising. Such tools can help organizations to reach visitors and tailor ads for them. Google Analytics allows website operators to better understand who is coming to their site and to optimize ad campaigns. The LinkedIn and Snap trackers, like a similar offering from Meta, help companies target their social media ads.
Nevada uses the trackers to help target marketing at uninsured residents, according to Russell Cook, Executive Director of the state agency that operates Nevada's exchange, Silver State Health Insurance Exchange.
But health care services need to be especially careful with those tools, said John Haskell, a data privacy attorney who has previously worked as an investigator for the Department of Health and Human Services.
'It doesn't surprise me that organizations that have these massive tech stacks that rely on third party-resources don't have a full understanding of what the configuration is, what the data flows are, and then once they go to somebody, what that data is being used for,' Haskell said. 'It's something that needs to be addressed.'
Advertisement
How was state exchange data tied to users' identities?
After
The Markup and CalMatters then examined websites operated by 18 states other than California, as well as Washington, D.C., to see what information they shared as users navigated them. The sites were established under the Affordable Care Act, which requires states to offer health insurance either through their own exchanges or one operated by the federal government.
To test them, we first ran the sites through
The results showed that 18 used some sort of tracker. Some were filled with them. Nevada, for example, used nearly 50. By contrast, Blacklight found no tracker of any kind on Washington, D.C.'s exchange. Popular websites use on average seven trackers, according to
Many of the sites used trackers in relatively innocuous ways, like counting page views.
The four exchanges we found sharing sensitive health data sent varied responses to questions about the tracking.
Advertisement
Cook said in a statement that trackers placed by his Nevada agency were 'inadvertently obtaining information regarding the name and dosage of prescription drugs' and sending it to LinkedIn and Snapchat.
Cook acknowledged such data was 'wholly irrelevant to our marketing efforts' and said it had disabled tracking software pending an audit.
Jason Lefferts, a spokesperson for Massachusetts Health Connector, said in a statement that 'personally identifiable information is not part of the tool's structure and no personally identifiable information, not even the IP addresses of users of the tool, has ever been shared with any party in any way via this tool.' But LinkedIn's
Spokespeople for the Rhode Island and Maine health exchanges said that they pay a vendor, Consumers' Checkbook, to run a separate site that allows visitors to explore what plans are available to them through their states' exchanges. It was from these sites that sensitive information was shared to Google. Consumers' Checkbook's sites are at different web addresses than the exchange sites, but are prominently linked to on the exchange sites and display identical branding like the state health exchange's logo, making it unlikely that an average visitor would realize they were no longer on a state-run domain.
Christina Spaight O'Reilly, a spokesperson for HealthSource RI, said the company uses Google Analytics to study trends but not to serve ads, and 'disables Google Signals Data Collection, ensuring that no data is shared with Google Ads for audience creation or ad personalization, and no session data is linked to Google's advertising cookies or identifiers.' HealthSource RI's terms of use mention the use of Google Analytics, she noted. A spokesperson for CoverME.gov made similar points, saying that the agency 'does not collect or retain any data entered into the tool.'
Advertisement
When an individual selected a doctor on HealthSource RI, the doctor's name was sent to Google Analytics.
The Markup/CalMatters
Consumers' Checkbook declined to comment beyond the exchanges' statements.
All of the exchanges said that individually identifiable health information, like names and addresses, wasn't sent to third parties. But the point of the trackers is to enhance information sent about a user with data the platforms already have on that user, and every tracker found by The Markup and CalMatters logged details about individual visitors, such as their operating system, browser, device, and times of visit.
In response to requests for comment, the tech companies whose trackers we examined uniformly said they do not want organizations sending them potentially sensitive health data, and that doing so is against their terms of use.
Steve Ganem, Director of Product Management for Google Analytics, said that 'by default any data sent to Google Analytics does not identify individuals, and we have strict policies against collecting Private Health Information or advertising based on sensitive information.' A spokesperson for LinkedIn, Brionna Ruff, said that advertisers are not allowed 'to target ads based on sensitive data categories,' such as health issues. A spokesperson for Snapchat owner Snap said the same, noting that sending purchases of supplies like prescriptions would run afoul of the company's rules about sensitive data.
Advertisement
'It is important to ensure that your implementation of Google Analytics and the data collected about visitors to your properties satisfies all applicable legal requirements,' the page reads.
More incidents
State exchanges aren't the only health sites that have sent medical information to social media companies.
In 2022,
In 2023, a New York hospital agreed to pay a $300,000 fine for violations of the Health Insurance Portability and Accountability Act, or HIPAA.
In response to a series of incidents, the
Some plaintiffs have used state laws, like those in California, to argue that they should be compensated for having their health data sent to third parties without consent. Others have argued that this kind of tracking runs afoul of
'Organizations aren't investing enough time and resources into properly vetting everything,' said Haskell, who advises clients to be very careful about the information they track on their sites. 'When organizations are saying, 'we didn't understand that there's a certain configuration of this tool that we're using,' well, I can't really
not
put that on you.'