Public health, explained: Sign up to receive Healthbeat’s free New York City newsletter here.Of the estimated 67 million people in the United States who will likely be affected by Medicaid cuts, about 3.6 million recipients live in New York City, and more than 1.3 million are concentrated in three congressional districts.Those districts cover parts of the Bronx, northern Manhattan, and Queens, according to a Healthbeat analysis of district data and KFF, a nonprofit organization focusing on health care issues.New Yorkers rely on Medicaid programs for everything from HIV treatment to home healthcare. The new changes to Medicaid — the public health insurance program for millions of low-income Americans that’s paid for by the federal government and individual states — are the result of H.R.1, the budget package that passed last summer and will slash $1 trillion from the Medicaid program over the next decade. As of Jan. 1, enrollees between ages 19 to 64 must prove that they are working, going to school, volunteering, or participating in a job-training program for at least 80 hours per month to keep their coverage. The rules are intended to push more people into the workforce and reduce what Republicans have described as waste and fraud in government programs. The New York State Department of Health estimates that at least 475,000 New Yorkers could lose their Medicaid coverage because of the new work requirements. The health department also estimates that New York’s uninsured population could jump by 45%, from approximately 1 million people to as many as 1.45 million people after implementation. A new rule for cancer patients stipulates that a diagnosis is not sufficient for a work exemption; they must officially prove they are unable to work.The Bronx leads the United States with the highest number of Medicaid enrollees, with 510,000 in Congressional District 15. People walk inside the NYC Human Resources Administration, part of the Department of Social Services, in the Bronx. The social service agency provides assistance to New Yorkers, including Medicaid enrollees.Health advocates say the Medicaid changes won’t be limited to enrollees and will have a cascading effect in communities and their hospitals. New Yorkers who lose coverage will likely forgo check-ins with their primary care physician, if they have one, causing preventable ailments to worsen and require emergency room visits. Hospitals are required by law to treat uninsured patients and will have to absorb the costs, which will likely accumulate. They’ll receive an influx of newly uninsured patients that will exacerbate overcrowding, forcing facilities to scale back on services that are expensive or aren’t lucrative, like pediatrics or primacy care, said Johanna Lister, policy director for the HealthySteps program at ZERO TO THREE, a nonprofit group focusing on early childhood.“They need to cut based on how they need to protect their remaining incoming revenue,” Lister said.Some hospitals will be forced to close. “The financial impact of hospitals is going to be huge, particularly for safety net hospitals, like in the Bronx,” Lister said about the healthcare facilities that provide treatment regardless of the patient’s ability to pay or insurance status. “There’s absolutely no doubt that hospitals will close.”A coalition of more than two dozen attorney generals and governors, including New York, filed a lawsuit in June against the Trump administration challenging the new work requirements.‘Canaries in the coal mines’In a recent interview with Healthbeat, New York City Health Commissioner Dr. Alister Martin said he was particularly concerned about three areas: the south Bronx, East Harlem, and the Brownsville neighborhood in east Brooklyn.“These are some of the areas that I think are really critical for us to watch and to see, almost as canary in the coal mines,” said Martin, whose department has brought on specialists to help Medicaid enrollees navigate the new requirements and has hosted public meetings to answer inquiries. His press office couldn’t say how many Medicaid enrollees the counselors have supported. A Healthbeat analysis of Medicaid data from congressional districts in New York City reveals the following:The Bronx leads the United States with the highest number of Medicaid enrollees, with 510,000 in Congressional District 15. That’s 71% of the district’s population. According to the Urban Health Plan, a community health center in New York State, the Bronx is “ground zero for what H.R.1 means in practice.” Between 20,000 to 30,000 residents in the borough could lose coverage on Medicaid and a separate plan for working-class New Yorkers, and up to $211 million could be pulled out of the Bronx food economy, says the Urban Health Plan.Congressional District 13, which includes northern Manhattan and parts of the Bronx, is also in the top 10 districts in the United States whose residents rely on Medicaid. That is 426,200 residents, or 59% of the population. The district also has the highest number of seniors in the city enrolled on Medicaid, with 69,900.Congressional District 14 has 57% of its population enrolled on Medicaid, or 423,800 residents. The U.S. representative for the district that includes the eastern Bronx and north-central Queens, Alexandria Ocasio-Cortez, said in a social media post earlier this month she was meeting with Deputy Mayor Helen Arteaga Landaverde to work on a strategy for combatting the cuts and expanding healthcare. Her office, and other offices for the New York City congressional delegation, did not respond to a list of questions about Medicaid. New York City’s 11th Congressional District, which includes Staten Island and part of Brooklyn, is in the top 10 of districts with Republican congressmembers, with 304,100 Medicaid enrollees, or 40 percent of its population. It’s the only New York City congressional seat represented by a Republican, Nicole Malliotakis.Unaware and unprepared: New requirements endanger coverage for millionsHealth advocates fear that Medicaid enrollees may overlook important notices or be unaware of the new requirements or not understand them, either because of a language barrier or because the instructions are hard to understand, and then miss important deadlines and fall off.Bronx resident Frances Bueno might be among them. The 62-year-old Puerto Rican woman said she was unaware of the changes to Medicaid.“Yeah, I read something like that,” Bueno said after stepping out of a community health center in the Mott Haven neighborhood in the south Bronx. A Medicaid recipient since last year, she had just paid a visit to her neurologist, who canceled the appointment, she said, and she was on her way to buy meat with food stamps.“It’s going to be rough on a lot of people out here,” she said.A sign outside the NYC Human Resources Administration in the Bronx directs visitors to a Medicaid office. The Bronx leads the United States with the highest number of Medicaid enrollees, with 510,000 in Congressional District 15. The Bronx, Queens, and Brooklyn are especially vulnerable. According to the United Hospital Fund, an independent nonprofit analyzing health policy in New York, 843,415 people in the Bronx, or 60% of the borough’s population are enrolled on Medicaid; 1.1 million in Brooklyn, or 45% of the population; 973,091 people in Queens, or 42% of the population, 421,264 people in Manhattan or a quarter of the population; and 171,290 people in Staten Island, or 35% of the population, are enrolled on Medicaid. With this in mind, New York State Senator Gustavo Rivera, whose district includes the Bronx, has introduced the New York Health Act, a piece of legislation that aims to establish a single-payer healthcare system at the state level. “I’m convinced that this is the way that we need to go,” Rivera, chair of the Senate Health Committee, told Healthbeat. “Taking insurance companies out of the equation means giving better care, having it cost less, and providing it to more people.”New Yorkers with questions about their coverage can call the New York State Medicaid Helpline at 800-541-2831.Trenton Daniel is a reporter covering public health in New York for Healthbeat. Contact Trenton at tdaniel@healthbeat.org or on the messaging app Signal at trentondaniel.88.