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Case study 11 min read

Children’s National pilots Chiefly’s Swap Portal: never-before flexibility for residents, 85% took part, ~350x less admin time

For the first time, Children’s National residents could trade their own blocks. After the 2026-27 block schedule went out three months early, residents got a month in Chiefly’s Swap Portal and made the schedule theirs: about 85% of those who could swap took part, 67 finished with a schedule they had shaped, two thirds of the residents who asked moved vacation to the weeks that fit their lives, and most of the rest moved core rotations to see a subspecialty sooner. The chiefs spent an hour or less on the whole month: nearly half the requests were settled among residents, and the 107 approved swaps took 15 to 30 seconds each.

Case study: the Swap Portal
×Children’s National
The short version

For the first time, Children’s National residents could trade their own blocks. After releasing its 2026-27 block schedule three months early, the program gave residents a month in Chiefly’s Swap Portal, and residents made the schedule theirs: about 85% of those who could swap took part, 67 finished with a schedule they had shaped, two thirds of the residents who asked moved vacation to the weeks that fit their lives, and most of the rest moved core rotations to see a subspecialty sooner. Every swap was agreed by the residents it affected and checked against the program’s rules and ACGME requirements before a chief signed off. Nearly half of all requests were settled without a chief ever looking, and the whole month took an hour or less of chief review.

At a glance

All quotes in this story are from Alexandra Martinson, MD, Chief Resident 2025-26 at Children’s National, who ran the program’s scheduling that year and joined Chiefly as an advisor in February 2026. The numbers come from Chiefly’s Swap Portal data for the program’s one-month swap window.

High engagement
85%
of residents who could swap took part
Work-life balance
68%
of residents who asked moved vacation to the weeks that fit their lives
Vacation control
43
residents moved their vacation during the one-month window
Fewer reviews
48%
of requests never needed chief review; Chiefly settled them for residents
Quick approvals
89%
of requests that reached a chief were approved
Time savings
30 min
of chief sign-offs for the month, against about 22 working days by email

Why was a swap window new for Children’s National?

Before Chiefly, residents at Children’s National had never been able to trade their own blocks. That is the norm in residency: once the block schedule is out, it is final except for parental leave and emergencies, and any change means finding a partner, emailing the chiefs and waiting.

Chiefly changed what was possible. The 2026-27 block schedule went out on February 18, three months earlier than the year before (how Children’s National did it), which left time for a one-month window to trade blocks before the schedule was final.

“What we worked on with Chiefly was: give residents choice and flexibility without adding administrative burden.”

How does the Swap Portal work?

A resident asks for a change in the Swap Portal, say cardiology instead of the ICU in block two. Chiefly only lets through swaps that fit the program’s rules and ACGME requirements, every resident the swap moves approves it, and a chief gives the final sign-off. No one sends an email. Chiefs and coordinators can also make swaps directly from an admin view, with more controls.

Four steps, no email
How a swap moved through the Swap Portal at Children’s National
  1. 1
    A resident asks
    Any resident starts a swap in the Swap Portal during the window.
    63 residents submitted requests
  2. 2
    Chiefly checks the rules
    Only swaps that fit the program’s rules and ACGME requirements go any further.
    Every request, automatically
  3. 3
    Every affected resident agrees
    The residents a swap moves approve or decline it, with 48 hours to answer.
    111 of 231 settled here
  4. 4
    A chief signs off
    The chief sees a swap that already fits the rules and has everyone’s OK.
    107 approved, 15 to 30 seconds each

How much work did swaps create for the chiefs?

Very little. Of the 231 requests that reached a decision, 111 (48%) were settled among the residents themselves: 67 declined by another resident, 44 expired with no decision in 48 hours. Of the 120 that reached a chief, 107 (89%) were approved, so the chief’s job was a quick confirmation, not a negotiation. At 15 to 30 seconds a review, the whole month took an hour or less of chief time.

Chiefly filtered out nearly half the requests before a chief saw them
231 swap requests in the one-month window. Every one had already passed Chiefly’s rules check, so the chief had an objective measure to stand behind, and half were settled by residents before a chief ever looked.
100%48%89%
Requested
231 requests
Resident approval
120 reached a chief
Chief approval
107 approved13 declined
48%
of requests were settled by the residents themselves. Chiefs never touched them.
89%
of requests that reached a chief were approved: a quick confirmation, not a negotiation.
Requests withdrawn before a decision aren’t counted.
“[Chiefly] makes sure that people are satisfying their rotation requirements, staffing and ACGME requirements, and then approves it. All the chief does, once the residents have agreed, is glance over it. Initially that took thirty seconds of brainpower. Afterwards, fifteen or less.”

Let’s put some numbers to this story. If each of those 231 requests had been a 45-minute email thread, the month would have cost the chiefs roughly 170 hours, about 22 working days. In the Swap Portal, the 120 that reached a chief took 15 seconds each: about 30 minutes. Even at a third-year resident’s salary at Children’s National, a conservative estimate for a chief, that’s about $7,600 of chief time by email against $22 in Chiefly.

More flexibility for residents at ~350x less admin cost
About 22 working days and $7,600 of chief time by email, vs. 30 minutes and $22 in Chiefly. Estimated for the month’s swap requests.
Chief time
in 8-hour working days
22 days
30 min
By email
In Chiefly
Chief salary cost
at a third-year resident’s salary, about $44 an hour
$7,600
$22
By email
In Chiefly
Email assumes 45 minutes of chief time for each of the 231 requests that reached a decision. The Swap Portal counts 15 seconds for each of the 120 requests that reached a chief; the other 111 never needed one. Cost is a conservative estimate: it uses Children’s National’s published 2026-27 salary for a third-year resident, $91,144, rather than a chief’s, over a 2,080-hour working year, salary only.

Because the rules were already checked, a chief could say yes to a request on the human level without worrying about the numbers.

“Maybe as a chief I would want to accommodate certain requests on the interpersonal level. Chiefly always had that check on the back end to make sure we weren’t making quantitative errors with staffing and ACGME requirements. I never had to think, am I missing something?”

Did residents actually use it?

Yes. About 85% of residents who could swap took part: 63 submitted requests, and 7 more were involved in requests from others. By the end of the month, 67 residents had a different schedule from their preliminary one. 44 of them had asked for the change, and 23 agreed to move as the other half of a swap.

Extremely high engagement from residents
Each figure is one of the roughly 82 residents who could trade blocks in the 2026-27 window
Finished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleFinished with a new scheduleTook part, kept their scheduleTook part, kept their scheduleTook part, kept their scheduleDidn’t take partDidn’t take partDidn’t take partDidn’t take partDidn’t take partDidn’t take partDidn’t take partDidn’t take partDidn’t take partDidn’t take partDidn’t take partDidn’t take part
85%
of the residents who could swap submitted a request or were involved in one
  • 67 finished with a new schedule82%44 asked for the change; 23 agreed to move as the other half of a swap
  • 3 took part, kept their schedule3%Submitted a request or were involved in one, and ended the month on their original blocks
  • 12 didn’t take part15%Never submitted a request and weren’t involved in one
Eligible residents are estimated as the rising second- and third-year classes, since interns hadn’t matched yet when the window opened.

Requests picked up through the month as residents realized what they could move, and many tried out several swaps before settling on one.

“It felt like we were getting requests increasingly, because residents were starting to interact more with [the Swap Portal] and realizing that they had opportunities to change the vacation they initially thought they wanted. During the month, they realized, actually, I want something else, and I have the flexibility to change it.”

What did residents use swaps for?

For flexibility they had never had, both in their time off and in their careers. Of the 63 residents who submitted requests, 43 (68%) moved vacation to the weeks that fit their lives, and 19 (30%) moved a core rotation with no vacation involved, shaping the order of their training. One moved only electives.

Vacation: a life outside the hospital

Most residents who asked for a swap were moving vacation
The 63 residents who submitted requests, by what their requests moved
68%moved vacation
  • Vacation43 residents68%
  • Core rotations19 residents30%
  • Electives and selectives only1 resident2%
Core rotations are everything except electives, electives with call and selectives. A resident whose requests also moved vacation counts under vacation.

That is the second half of what the Swap Portal did. It saved the chiefs time, and it gave residents a say in their own year that they had never had: vacation in the week that actually works, an outpatient block in the month with family commitments, the heaviest rotations spaced out, and for some, a subspecialty seen sooner.

“I think there was so much engagement because they didn’t get this sort of choice in residency before. Residency is a really rigid schedule. So for them to feel like they have any control over their schedule was exciting.”

Career moves: a subspecialty sooner, so fellowship decisions aren’t delayed

The career moves stood out to the chiefs: pulling cardiology or the NICU into the first quarter, or stacking two or three subspecialties early to decide what to apply to.

“There were clearly people using [the Swap Portal] for their career development. They were putting cardiology earlier in the year, NICU earlier in the year, to see if that’s where they want to move their career trajectory.”

That timing matters. In pediatrics, most residents who go on to fellowship settle on a field during residency and some decide late (Macy et al.), and neurology’s program directors have argued residents are asked to choose before they have seen the subspecialties (AAN position statement). A swap window lets a resident see one sooner.

“For some people it delays the fellowship application. There are people who take research gap years because they weren’t exposed early enough to what they wanted to apply into.”

What happens when a swap would break a rule?

Chiefly tells the resident clearly that it would break a rule, so they can try another idea. When a swap made sense on paper and Chiefly flagged it, a staffing, cadence or ACGME conflict the resident couldn’t see was behind it, so the no came from the rules, not a chief.

“People were trying to figure out, why isn’t Chiefly offering this solution? Because I see it. This makes sense to me. And I think that was one of the most enlightening moments, because then we would say, actually, Chiefly caught a staffing error, or rotation cadence, or an ACGME error that you weren’t aware of.”

Can other programs run a swap window like this?

Yes. Each program sets its own swap periods in Chiefly, from a single month like Children’s National to ranges across the whole year, and can open the published schedule to residents with or without swaps turned on. The rules a program already runs on are the ones every swap is checked against.

For how Children’s National built the schedule the swaps started from, read Children’s National’s five-year partnership with Chiefly.

Frequently asked questions

A swap portal lets residents trade blocks on the schedule themselves instead of emailing the chiefs. In Chiefly’s Swap Portal, a resident requests a swap, Chiefly checks it against the program’s rules and ACGME requirements, every resident it affects approves it, and a chief gives the final sign-off. Chiefs and coordinators can also make swaps from an admin view.

With Chiefly, very little. At Children’s National, 48% of decided requests were settled among residents before a chief saw them, 89% of the requests that reached a chief were approved, and each review took 15 to 30 seconds, so the whole one-month window took an hour or less of chief time. Had each of the 231 requests been a 45-minute email thread, the same month would have taken roughly 170 hours of chief time, about 22 working days. Programs can set the swap period to any window, from a single month to the whole year.

At Children’s National, about 85% of residents who could swap took part in Chiefly’s Swap Portal, and 67 ended the month with a different schedule from their preliminary one. Residents there had never been able to trade their own blocks before.

Yes. In Chiefly’s Swap Portal at Children’s National, 68% of the residents who submitted requests were moving vacation and 30% were moving a core rotation with no vacation involved, often to see a subspecialty such as cardiology or the NICU earlier in the year.

Chiefly tells the resident right away that the swap would break a rule, so they can try another idea instead. Every swap is checked against the program’s rules and ACGME requirements before anyone approves it, so the no comes from the rules rather than a chief, and a chief only ever sees swaps that already fit.

Sources

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