@Mark_Meiselbach

Assistant Professor studying health economics at @JohnsHopkins @JHSPH_HPM. Alumn of @JHSPH_HPM @TuftsUniversity.

Baltimore, MD
Joined October 2015
I thought health economics deserved its own... let me know what I missed! No shade meant for any of these papers, of course. #healthecon Original source of comic: xkcd.com/2456/
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Mark Meiselbach retweeted
The Society of Labor Economists (SOLE) will hold its 30th Annual Meeting April 30 - May 1 at the Hyatt Regency in Baltimore, Maryland. The Call for Papers is OPEN. This is a fabulous conference for junior and senior faculty. MORE HERE: sole-jole.org/upcoming-meeti…
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@JohnsHopkins School of Government and Policy is hiring multiple TT faculty across soc, poli sci, law, public admin, history, philosophy, CS, engineering, econ. In DC, due Oct 25. Part of our founding cohort, so you'd shape what the school becomes! apply.interfolio.com/193492 apply.interfolio.com/193579
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Mark Meiselbach retweeted
I am so incredibly proud of Baltimore’s historic declines in violence.

When I joined the Council ten years ago, our city felt out of control. Death and corruption defined our narrative. Too many families were left to suffer alone and in silence. The next year we entered a consent decree with the DOJ for unconstitutional patterns and practices within our police department.

The public safety gains we are making are stunning. But most importantly, they have nothing to do with mass incarceration or zero tolerance. They are about Trauma-Informed Care, Community Policing, Group Violence Reduction Strategy, violence interrupters, effective prosecution, and investing in our people. They are about Baltimoreans saying “Enough is Enough,” reclaiming our neighborhoods and refusing to let anyone else tell our story.

We still have a very long way to go. I will not be satisfied until we are a truly safe city for everyone who lives and visits here. We have hard work to do to build an economy that lifts everyone. But it is worth taking a moment to acknowledge the way our village is standing tall. I love this city.
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Mark Meiselbach retweeted
BREAKING NEWS: Baltimore sees lowest homicide total in July ever recorded.
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Mark Meiselbach retweeted
🚨 Homicides in Baltimore are now at a 50-year low under Mayor Brandon Scott.
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Reagan is rolling over in his grave. Iran’s nuclear ambitions were not curbed, and they have learned that threatening the Strait of Hormuz works and will undoubtedly leverage it in the future. Now, Iran gets to build brand-new infrastructure under this deal. Before the war, the strait was open, Iran was being crushed by sanctions, and 13 service members were still alive. Now, 13 Americans are dead, families have paid billions at the pump, sanctions will be lifted, and the bombing has stopped. This is the worst foreign policy blunder in decades.
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Mark Meiselbach retweeted
Ballparks don’t get much prettier than this
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Mark Meiselbach retweeted
May in Baltimore ended with 8 homicides. That’s down from: -15 last May -29 in May 2023 -39 in both May 2021 and 2020 -40 in May 2017 -and 42 in May 2015
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Mark Meiselbach retweeted
Yesterday, Baltimore made history: the fewest homicides in a month EVER RECORDED. But you wouldn’t know it if you were watching @FOXBaltimore. 🧵…
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New paper out today in JAMA with @LavalleeMat, Matthew Zahn, @FrankXu_PhD, and @healthecon_dan where we document a substantial increase in plan exits from Medicare Advantage in 2026. Approximately 1 in 10 MA beneficiaries have been forced to leave their plan in 2026.
Forced disenrollment from #MedicareAdvantage plans will reach 10% in 2026, affecting millions—particularly those in rural areas, PPOs, and lower-rated plans. 🧵 ja.ma/4alUORy
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Forced disenrollment rates averaged about 1% of enrollment annually from 2018–2024 but increased sharply in 2025 and 2026. Disruptions are more common among beneficiaries enrolled in PPO plans, plans offered by smaller carriers, and those living in rural areas.
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These findings highlight the potential for significant coverage disruptions and raise important questions about continuity of care and market dynamics in Medicare Advantage. We are grateful for support from @Arnold_Ventures for this work.
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Join CMAP & the Bloomberg Overdose Prevention Initiative for a convening on innovative uses of opioid settlement funds. Explore best practices, emerging innovations, and new 2024 tracking data. Hybrid event. Registration required. Register & Learn more: bit.ly/CMAP-NEXUS4
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Replying to @Mark_Meiselbach
@Mark_Meiselbach, PhD and @MattDEisenberg, PhD recently sat down with @sdesmon on @PublicHealthPod for part one of a two-part series on public health and gambling. Listen to the full episode: bit.ly/3NYnUh4
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New paper out in @JAMANetworkOpen led by @JohnsHopkinsSPH HPM PhD student Matthew Lavallee. This new paper highlights a potential tradeoff enrollees may face when selecting Part B giveback plans in MA: narrower provider networks for most specialties.
Medicare Advantage plans with Part B premium givebacks had narrower physician networks compared with plans without givebacks, especially among those offering larger giveback amounts. ja.ma/4k0w8kK
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Mark Meiselbach retweeted
Video message from Federal Reserve Chair Jerome H. Powell: federalreserve.gov/newsevent…
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“There is a risk that online sports betting could lead to a gambling disorder, which can lead to bad mental health, drug use, and personal outcomes," says @BSPH_HPM's @MattDEisenberg. “Public health needs rigorous evidence to quantify the effects.” magazine.publichealth.jhu.ed…
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Online sports betting can increase the risk of gambling disorder—raising concerns for mental health and substance use. @MattDEisenberg and @Mark_Meiselbach highlight how state-by-state regulations create natural experiments for smarter interventions. 🔗 bit.ly/4qqxirS
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Mark Meiselbach retweeted
As of this morning, Baltimore has seen a 29.8% decrease in homicides and a 25.2% decline in non-fatal shootings. As we enter the last month of the year, we are doubling down on our work to continue this progress into 2026 and beyond. One life lost to violence is one too many.
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