Physician and health economist. Assistant prof at @VA_CSHIIP and @UCLA_GIMHSR. Working to understand doc behavior and health care disparities.
Los Angeles, CA
Joined May 2009
- Tweets1.7K
- Following539
- Followers877
- Likes3K
Dan Ly retweeted
Our new working paper, studying the value of informal caregiving among the elderly, is featured on the @nberpubs website this morning. You can access the paper here (nber.org/papers/w35784), but a short thread:
Joint with @timothyjlayton, @talgross, and Itzik Fadlon
Dan Ly retweeted
Sold a Story Season 2 is out. features.apmreports.org/sold…
You can hear episodes 1 and 2 today.
Then it's one episode a week, on Thursdays, through Nov 19.
Dan Ly retweeted
NIHCM’s September Newsletter is here 🗞️
This month, we are exploring GLP-1s, prescription drug affordability, postpartum mental health, vaccines, and more. We also have an exclusive Q&A on diabetes preventive therapies with @meddly
Read the full newsletter here: bit.ly/NIHCMSept26newsletter
#NIHCMnewsletter #glp1s #mentalhealth
Dan Ly retweeted
In the US Veterans Affairs system, female emergency physicians modestly increased testing and hospital admissions compared with male colleagues, with no difference in 30-day mortality or short admission rates. ja.ma/45twklY
Dan Ly retweeted
💬 Editorial: Female physicians in VA emergency departments ordered more diagnostic tests and admitted more patients than male physicians, but test appropriateness and outcomes were similar. ja.ma/4fxdcbu
Dan Ly retweeted
Session recs for #ASHEcon2026: *Mon 330-5pm Lakeshore B* w/ Maya Roy presenting our work on hospice care @YunanJi @ashdgandhi & *Tues 1015-1145am* in Greenway B where I'll be presenting on antibiotic stewardship & innovation, w/ discussion by @parker_rog cc: @LucyXiaolu_Wang
Dan Ly retweeted
Excited to present my *job market paper* at the Annual @POM_Society Conference 2026 this Sunday morning!
“The Impact of Batching Advanced Imaging Tests in Emergency Departments”
Joint work w/ @Soroush_Saghaf, @robert_huckman, @nhodgsonem, and Joshua Baugh. 1/n🧵
Dan Ly retweeted
New @JAMANetwork study! We document that non-profit hospitals have spent billions on management consultants and estimate the effects of this spending. In short, we find little statistically-discernible evidence of either major benefits or harms. (Some precise 0s, some wide CIs.)
Dan Ly retweeted
Bunching shows doctors sometimes override diagnostic thresholds, and this discretion improves patient care. Just Accepted new paper by Claire Boone Bluesky: @claireboone.bsky.social @claireeboone zurl.co/ITAv2
Dan Ly retweeted
New paper in @JAMAInternalMed:
Patient race is widely used in medical algorithms...but it's unclear how patients feel about this.
We conduct the first nationally-representative survey to find out, producing 4 key findings with practical implications - see James' thread!
1/ We’ve heard so much from researchers and academics on the tradeoffs of using race in medicine. But what do patients want?
We conducted the first nationally representative survey to systematically study these preferences, now out in @JAMAInternalMed:
Dan Ly retweeted
Inspections are a critical tool used by regulators to ensure that restaurants, healthcare, housing, etc., are safe. While the exact dates of these inspections are typically unannounced, their general timing is often highly predictable. Our new paper suggests that's a problem.
🧵:
Nursing home effort fluctuates with the inspection cycle, affecting patient survival. Unpredictable inspection schedules may boost effort and save lives, from @ashdgandhi, @andrewolenski, and @maggieshi311 nber.org/papers/w34491
Dan Ly retweeted
A few months ago, we were both excited and nervous to stage a public face-off at @Harvard between “Dr. CaBot,” our AI system that simulates an @NEJM expert discussant, and a real @NEJM discussant & expert diagnostician.
Today, @DhruvKhullar tells the story in The New Yorker.
Dan Ly retweeted
1000 low income adults were randomly selected to receive $1000/month for 3 years, with a control group receiving $50/month over that same period. Many of them had children in the household. How did it affect how they parented and their kids?
Dan Ly retweeted
We measure “effectiveness” of primary care providers in the @VAResearch along two dimensions: mental and physical health adverse events. We find the two are strongly correlated across providers and that more effective PCPs use less resources.
Measuring effectiveness (value add) of primary care providers and find more effective PCPs use less resources. In the March issue, by Janet Currie (@PrincetonCHW) and Jonathan Zhang (@jzhangecon) zurl.co/ktHjH
Dan Ly retweeted
If you have to take a daily pill to reduce your risk of heart disease, wouldn't it be easier get your meds at the pharmacy 4 days/yr instead of 12?
We made a simple tweak in the default order that made things easier for patients and reduced disparities 🧵
jamanetwork.com/journals/jam…
Dan Ly retweeted
Many industries where the government is a major regulator, purchaser, or supplier suffer from severe worker shortages (e.g., healthcare, transportation, education, public safety).
A quick thread on our new @restatjournal showing how government payment incentives can help:
1/N
Payment incentives alleviate worker shortages at nursing homes. Just Accepted new paper by Ashvin D. Gandhi (@ashdgandhi), Andrew Olenski (@andrewolenski), Krista Ruffini (@KristaRuffini), and Karen Shen zurl.co/H2Uo3
Dan Ly retweeted
A new study by @StanfordHP researchers provides evidence that involuntarily infertile couples experience poorer mental health among both partners and a much higher likelihood of divorce.
w/ @SarahBogl, @PerssonPetra, @MariaAPolyakova, @JasminMoshfegh ow.ly/Nxxs50SBWIK
Dan Ly retweeted
Consensus among academics is that results of the OpenResearch UBI study were between mixed and disappointing. Yet most articles in the popular press (Forbes, Bloomberg, Vox, NPR, Quartz) characterize the results in a positive tone and ignore or bury the null/negative results.
Other outlets that have written extensively about UBI (NYT, WaPo) have ignored the story. Would they have covered it had the results been more positive? Coincidentally, a smaller, narrower UBI study was also released today that did have positive results (27% reduction in ER visits). WaPo covered that one.
This is a prime example of how much bias creeps into if and how a study is reported.
Dan Ly retweeted
I’ve successfully filed 8 FOIAs and won 3 FOIA lawsuits. The following thread is a guide to filing a FOIA request as a researcher, including templates and real example filings.
Please RT! If this thread is helpful, I'll write a Part 2 on filing FOIA lawsuits.
1/10
Dan Ly retweeted
“Dad what was it like running a diff in diff study before Goodman-Bacon and @pedrohcgs and Callaway?”