The assumption that people on disability benefits have their healthcare costs fully covered is one of the most expensive myths in American social policy. Coverage exists. Gaps in that coverage exist too — and for millions of lower-income beneficiaries, those gaps are where the real financial damage happens.
A pastor at a Phoenix community church introduced me to Dianne Ochoa last November, a few weeks before the Medicare open enrollment deadline. He had mentioned, quietly and without much detail, that one of his congregants was struggling. When I finally sat down with Dianne at a diner near her apartment in west Phoenix, she arrived ten minutes early and ordered only coffee.
A Teacher Who Thought She Had It Figured Out
Dianne Ochoa is 60 years old and has spent the last 31 years teaching high school mathematics in the Phoenix Unified School District. She is sharp, plainspoken, and deeply skeptical of anyone who tries to explain money to her. “I always thought financial advice was for people with money to move around,” she told me, stirring her coffee. “I’m not that person.”
She is also divorced, paying approximately $580 a month in child support for her two children, ages 14 and 17, who live with their father across town. She lives alone in a one-bedroom apartment. Her rent is $1,050 a month.
In early 2023, Dianne was diagnosed with Type 2 diabetes and hypertension. The conditions forced a medical leave from teaching that stretched longer than she expected. By the fall of 2023, she had applied for Social Security Disability Insurance. Her application was approved after an appeal in March 2024. Her monthly SSDI payment: $1,340.
After the mandatory 24-month waiting period, Dianne became eligible for Medicare in April 2026. She enrolled in Medicare Part A and Part B, and selected a Part D prescription drug plan through a private insurer — the one her case worker pointed her toward — which covered her metformin and lisinopril for a combined $47 a month in copays.
Then the Letter Arrived
In October 2025, during Medicare’s annual open enrollment window — which runs each year from October 15 through December 7, according to Medicare.gov — Dianne received a notice in the mail. She almost threw it away.
“I get so much mail from Medicare I stopped opening half of it,” she admitted. “That was my mistake.”
The letter informed her that her Part D plan was being discontinued at the end of 2025. She was automatically enrolled in a comparable plan — a standard industry practice when a plan terminates. The new plan listed her metformin as a Tier 1 drug. Her lisinopril, however, had moved to Tier 3.
Her new monthly prescription cost: $189. That is a jump of $142 every month — or $1,704 over the course of a year — on a fixed income that was already $550 short of covering her basic expenses.
The Gap Nobody Talks About
When I asked Dianne how she handled the first month, she paused for a long moment before answering. “I paid the electric bill late,” she said. “And I asked my ex if I could skip one child support payment. He said no.”
This is the reality that benefit statements don’t capture. SSDI, as administered by the Social Security Administration, replaces a portion of pre-disability earnings — not all of them, and not in a way that accounts for the medical costs that often accompany the conditions triggering disability in the first place.
Dianne’s situation reflects a broader pattern. According to KFF’s 2026 Part D analysis, drug plan formularies shift substantially year over year, and beneficiaries who do not actively review their coverage during open enrollment routinely end up paying more than necessary.
What Changed — and What Didn’t
The pastor who introduced us had quietly connected Dianne with a volunteer benefits counselor through the State Health Insurance Assistance Program, known as SHIP. The counselor, Dianne told me, spent two hours with her in January going through plan options she had missed during open enrollment.
Dianne applied for Extra Help in February. Her application was approved. Her new Part D costs dropped to approximately $11 a month for both medications combined. The difference between what she was paying in January and what she pays now is $178 a month.
“I’m not going to say everything is fine now,” Dianne told me as we wrapped up. “I’m still $400 short every month before I even get to groceries. But at least the prescriptions aren’t what’s killing me anymore.”
The Part She Still Regrets
What stays with me from my conversation with Dianne is not the relief at the end of her story — it’s the months she spent rationing her blood pressure medication because she couldn’t afford a full supply. She told me she cut pills in half for six weeks during the winter. She said it matter-of-factly, the way a person describes a thing they are not proud of but have accepted.
“I should have opened that letter,” she said. “I teach kids to check their work. I didn’t check mine.”
She plans to return to teaching part-time in the fall if her health permits. She has already set a reminder on her phone for October 15 — the first day of Medicare open enrollment. For a woman who describes herself as stubborn and self-reliant, asking for help was the hardest equation she ever solved. That it took a pastor, a volunteer counselor, and six weeks of rationed medication to get her there is the part of this story that no benefit pamphlet will ever capture.
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