Marcus Chen
CEO
MIT Operations ResearchDARPA grant recipient for logistics optimizationPublished mathematician
Trusted by chief residents and program directors at top-20 academic health systems
Stop Building Schedules. Start Reviewing Them.
Thrawn uses mathematical optimization — not rules or spreadsheets — to deliver finished physician schedules for your residency program. You send constraints. We send back optimal block, call, clinic, and attending schedules. No software to learn. No configuration.
14 hospitalsserved across 19 departments
100%ACGME compliant schedules
Hundreds of hourssaved per year per program
Scheduling shouldn't be the hardest part of being chief.
Hundreds of Hours Wasted
Chief residents spend hundreds of hours per year building schedules in Excel instead of focusing on clinical work.
The Domino Effect
One swap request breaks the whole schedule. Block, call, and clinic schedules are all connected but built separately.
ACGME Compliance Risk
Manual duty hour tracking means violations slip through until your next site visit.
Fairness Complaints
Residents perceive bias in assignments. Manual builds can't prove equity.
Annual Turnover
New chief, same mess. Scheduling knowledge walks out the door every July.
Fragmented Tools
Block in Excel, call in Amion, clinic on paper. No single source of truth.
How It Works
1
Send Your Constraints
Resident preferences, rotation requirements, ACGME rules, vacation requests, educational goals. Send us everything that matters to your program.
2
We Optimize Everything Simultaneously
Our proprietary Scheduling Programming Language optimizes ALL schedule types simultaneously. Mathematical optimization — not rules. We find the optimal answer, not a 'good enough' guess.
3
Review and Approve
Receive finished block, call, clinic, and attending schedules. Review. Approve. Done. Need tweaks? We re-optimize.
Are you ready to take your time back?
Book a free consultation to see what an optimized schedule looks like for your program. Most programs onboard in 1–2 weeks.
Four schedule types. One interconnected optimization.
Most programs build block, call, clinic, and attending schedules separately — then spend weeks resolving conflicts. Thrawn optimizes all four simultaneously. One change doesn't break the rest. The domino effect is eliminated by design.
Block Schedules
Year-long rotation assignments with resident preferences and educational requirements built in.
- Resident preference matching
- Educational requirement fulfillment
- PGY-level balancing
Call Schedules
Fair on-call distribution with automatic ACGME duty hour compliance. Violations prevented, not just detected.
- Automatic ACGME compliance
- Fair night/weekend distribution
- Duty hour violation prevention
Clinic Schedules
Balance educational goals with patient care coverage. Integrated with block and call - no cross-schedule conflicts.
- Cross-schedule conflict elimination
- Patient care coverage optimization
- Educational goal integration
Attending Schedules
Contractual FTE obligations, fair coverage, time-off requests - all optimized alongside resident schedules.
- FTE obligation tracking
- Fair coverage distribution
- Resident schedule alignment
Not another scheduling tool. A scheduling engine built on operations research.
Mathematical Optimization
Our proprietary Scheduling Programming Language finds the mathematically optimal answer. Not a 'good enough' guess. Rules suggest. We solve.
Done For You
You don't learn software. You don't configure rules. You send constraints. We deliver schedules. Zero lift for your team.
GME-Native
Built for residency and fellowship programs from day one. Not an enterprise tool adapted for GME. ACGME, PGY levels, rotations — all native.
Provable Fairness
Not 'we tried to be fair.' Mathematically balanced distribution of nights, weekends, and coveted rotations.
100% ACGME Compliant
Duty hour violations are prevented at generation time — not caught after. Walk into your ACGME site visit with confidence.
Rapid Re-optimization
Resident out sick? Schedule re-optimized rapidly — not manually patched together.
See how Thrawn compares.
| Thrawn | QGenda | Amion | Excel | |
|---|---|---|---|---|
| Schedule Generation | Complete auto-built schedules | Suggests, you still build | Display only | Fully manual |
| ACGME Duty Hour Compliance | Prevents violations | Detects violations | None | Manual tracking |
| Cross-Schedule Optimization | Yes | No | No | No |
| Fairness / Equity Engine | Mathematical proof | Rule-based | None | Eyeball |
| Zero Workload for Chiefs | Fully managed | Self-service | Self-service | Self-service |
| GME-Native | Purpose-built | Adapted | Legacy | Generic |
RESULTS
What Our Clients Say
“
Scheduling can be one of the most stressful and time-consuming parts of the role, but Thrawn made the entire process seamless. We provided the team with the vacation requests of our clinical fellows and scheduling requirements for various rotations, and Thrawn quickly followed up with a couple of clarifying questions. Within such a short time, our yearly block fellowship schedule was complete! I would highly recommend their services to any program looking for a reliable and efficient way to build equitable schedules!
Clinical Fellow, Neurocritical Care Fellowship, Leading Academic Medical Center
Key Outcomes
Hundreds of hourssaved per year per program
14 hospitalsserved across 19 departments
100% ACGMEcompliant schedules generated
OUR TEAM
Built by MIT-trained mathematicians and logistics experts.
Daniel Park
CTO
MIT CS/EconBuilt optimization software at PalantirFamily of physicians
Ava Restrepo
COO
MIT EconomicsFedEx & Flexport logisticsNLP research, healthcare operations focus
DARPA. Palantir. FedEx. Flexport. MIT. Operations research credentials that back up every optimization claim.
WHO WE SERVE
Built for the People Who Own the Schedule.
By Role
Chief Residents & Chief Fellows
You became chief to lead — not to live in a spreadsheet. Send us your constraints. Get back finished schedules. Block, call, clinic — all optimized together. Mathematically fair. ACGME compliance baked in.
See How Chiefs Use ThrawnProgram Directors
Your accreditation depends on compliant schedules. Thrawn prevents ACGME duty hour violations at generation time. Walk into your site visit with confidence.
See How PDs Use ThrawnProgram Coordinators
Fewer fire drills. No more chasing down swaps that break everything. When changes happen, we re-optimize — you don't manually patch.
See How Coordinators Use ThrawnBeyond Scheduling: Logistics Infrastructure for Healthcare
Healthcare wastes $760B annually on operational inefficiency. Scheduling is where we start. Care coordination — patient triaging, provider management, resource optimization — is where we're going. Currently partnering with a top-5 academic health system on clinical care coordination.
Everything You Need to Know About Thrawn
Most programs are onboarded within one to two weeks. You send us your constraints — resident preferences, rotation requirements, ACGME rules, vacation requests, and educational goals — and we deliver your first optimized schedule shortly after.
Thrawn supports any residency or fellowship program that needs block, call, clinic, or attending schedules. We currently serve 19 departments across 14 hospitals at top-20 academic health systems, spanning internal medicine, surgery, neurology, emergency medicine, pediatrics, and many more.
QGenda and Amion are scheduling tools — you still build the schedule yourself. Thrawn is a scheduling engine. You send us your constraints, and we deliver finished, optimized schedules. Our proprietary Scheduling Programming Language uses mathematical optimization to find the optimal answer, not a 'good enough' guess. We also optimize block, call, clinic, and attending schedules simultaneously, eliminating cross-schedule conflicts.
Instead of applying rules one at a time (like most scheduling software), Thrawn's engine considers all constraints simultaneously and finds the mathematically best possible schedule. This is the same class of algorithms used in airline crew scheduling, military logistics, and supply chain optimization. The result is provably fair distribution and guaranteed ACGME compliance — not just a best effort.
No. Thrawn is a done-for-you service. You send us your constraints and preferences. We deliver finished schedules. There is no software to learn, no rules to configure, and no training required.
When a resident is out sick, a swap is needed, or any change disrupts the schedule, we re-optimize rapidly. Unlike manual patching in Excel where one change creates a domino effect, our engine recalculates the entire schedule to maintain fairness and compliance.
Need tweaks? We re-optimize. You review, approve, done. There is no limit on revisions. Our goal is to deliver a schedule your program is happy with.
Yes. All program data is encrypted in transit and at rest. We follow strict data handling policies and only use your data for the purpose of generating your schedules. We never share your data with other programs or third parties.
Thrawn produces block schedules, call schedules, clinic schedules, and attending schedules — all optimized simultaneously. This cross-schedule optimization eliminates the conflicts that arise when these schedules are built separately.
Pricing depends on program size, number of schedule types, and complexity. Book a free consultation and we'll provide a personalized quote for your program.
Yes. Our proprietary Scheduling Programming Language is designed to encode any constraint your program has — from ACGME duty hour rules to site-specific policies, resident preferences, and educational requirements. If you can describe the rule, we can optimize for it.
Your Residents Deserve a Fair Schedule. You Deserve Your Time Back.
Let us show you what an optimized schedule looks like for your program. Book a free consultation — most programs onboard in 1–2 weeks and never build a schedule manually again.