Mass General Brigham Health Plan is removing Dana-Farber Cancer Institute from its Medicare Advantage network starting October 1. The network change affects approximately 1,000 members who had or are slated to have appointments this year, leaving hundreds of active patients scrambling for new care or alternative insurance coverage.
Eldon Clingan was diagnosed with prostate cancer in 1999 and has spent more than two decades seeing the same oncologist at Dana-Farber Cancer Institute. Last month, the 88-year-old retired accountant received a letter informing him that his ongoing treatment at the cancer center would no longer be covered by his insurance as reported by WBZ-TV. Starting October 1, the Medicare Advantage plan operated by the insurance arm of Mass General Brigham will drop Dana-Farber from its provider network, impacting about 1,000 members.
Among those members, approximately 250 are actively undergoing cancer treatment, including chemotherapy or radiation, according to The Boston Globe. For Clingan, who takes a medication costing $10,000 a month that he expects to need for the rest of his life, the sudden change introduces severe personal strain.
Financial Pressures and Institutional Realignment Behind the Split
Mass General Brigham Health Plan officials attributed the network exclusion to financial pressures. Jennifer St. Thomas, senior vice president of commercial and Medicare markets for MGB Health Plan, stated that the decision was driven by the challenging environment in which Medicare Advantage plans contend that federal reimbursements are failing to keep pace with rising care costs.
While MGB Health Plan operates separately from the MGB hospital system for legal and business reasons, the timing coincides with a major structural realignment in Boston health care. Dana-Farber previously announced it would end its long-term clinical partnership with the MGB hospital system in 2028 and build a new freestanding adult cancer hospital with Beth Israel Lahey Health. MGB executives maintain that the insurance network reduction is entirely unrelated to the ongoing separation between the two health systems.

David E. Williams, president of the Boston management consulting firm Health Business Group, noted that narrowing provider networks is a primary method private insurers use to manage costs under strict federal rules.
“Why would you do that to patients? If you’re trying to be a good health plan, why would you go and say you suddenly can’t have access to the top cancer center in Boston?”
David E. Williams, President of Health Business Group, via The Boston Globe
Transition Windows, Patient Options, and National Medicare Pressures
Impacted enrollees in the MGB Health Plan Medicare Advantage network—which totals roughly 20,500 members overall according to STAT—face a narrow window to adjust their coverage. Affected patients can maintain in-network coverage at Dana-Farber during a 90-day transition period or through the completion of their treatment plans, which can extend past the start of the new year for individuals undergoing clinical trials, cell therapy, radiation, or chemotherapy.

The local clash mirrors a broader national retrenchment in the Medicare Advantage market. For older adults managing complex illnesses, the squeeze translates directly into disrupted relationships with long-standing specialists.
“I feel like I am collateral damage in this war. Sick people should not have to suffer this kind of stress in addition to the stress of cancer, which for most of us, one way or the other, is going to be fatal.”
Eldon Clingan, Patient, via CBS News
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