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Top AI Repos tracks AI repositories on GitHub and answers two different questions about each one: is it moving right now, and would you bet a product on it.
Top AI Repos tracks AI repositories on GitHub and answers two different questions about each one: is it moving right now, and would you bet a product on it.
Synthetic Patient Population Simulator
| Date | Stars |
|---|---|
| 2026-07-24 | 3264 |
| 2026-07-25 | 3264 |
| 2026-07-28 | 3264 |
| 2026-07-30 | 3264 |
| 2026-08-06 | 3264 |
Today
— stars today
This week
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Momentum
35.0
growth rate 0.00%/day
# Synthea<sup>TM</sup> Patient Generator  [](https://codecov.io/gh/synthetichealth/synthea)
Synthea<sup>TM</sup> is a Synthetic Patient Population Simulator. The goal is to output synthetic, realistic (but not real), patient data and associated health records in a variety of formats.
Read our [wiki](https://github.com/synthetichealth/synthea/wiki) and [Frequently Asked Questions](https://github.com/synthetichealth/synthea/wiki/Frequently-Asked-Questions) for more information.
Currently, Synthea<sup>TM</sup> features include:
- Birth to Death Lifecycle
- Configuration-based statistics and demographics (defaults with Massachusetts Census data)
- Modular Rule System
- Drop in [Generic Modules](https://github.com/synthetichealth/synthea/wiki/Generic-Module-Framework)
- Custom Java rules modules for additional capabilities
- Primary Care Encounters, Emergency Room Encounters, and Symptom-Driven Encounters
- Conditions, Allergies, Medications, Vaccinations, Observations/Vitals, Labs, Procedures, CarePlans
- Formats
- HL7 FHIR (R4, STU3 v3.0.1, and DSTU2 v1.0.2)
- Bulk FHIR in ndjson format (set `exporter.fhir.bulk_data = true` to activate)
- C-CDA (set `exporter.ccda.export = true` to activate)
- CSV (set `exporter.csv.export = true` to activate)
- CPCDS (set `exporter.cpcds.export = true` to activate)
- Rendering Rules and Disease Modules with Graphviz
## Developer Quick Start
These instructions are intended for those wishing to examine the Synthea source code, extend it or build the code locally. Those just wishing to run Synthea should follow the [Basic Setup and Running](https://github.com/synthetichealth/synthea/wiki/Basic-Setup-and-Running) instructions instead.
### Installation
**System Requirements:**
Synthea<sup>TM</sup> requires Java JDK 17 or newer. We strongly recommend using a Long-Term Support (LTS) release of Java, 17 or 25, as issues may occur with more recent non-LTS versions.
To clone the Synthea<sup>TM</sup> repo, then build and run the test suite:
```
git clone https://github.com/synthetichealth/synthea.git
cd synthea
./gradlew build check test
```
### Changing the default properties
The default properties file values can be found at `src/main/resources/synthea.properties`.
By default, synthea does not generate CCDA, CPCDA, CSV, or Bulk FHIR (ndjson). You'll need to
adjust this file to activate these features. See the [wiki](https://github.com/synthetichealth/synthea/wiki)
for more details, or use our [guided customizer tool](https://synthetichealth.github.io/spt/#/customizer).
### Generate Synthetic Patients
Generating the population one at a time...
```
./run_synthea
```
Command-line arguments may be provided to specify a state, city, population size, or seed for randomization.
```
run_synthea [-s seed] [-p populationSize] [state [city]]
```
Full usage info can be printed by passing the `-h` option.
```
$ ./run_synthea -h
> Task :run
Usage: run_synthea [options] [state [city]]
Options: [-s seed]
[-cs clinicianSeed]
[-p populationSize]
[-r referenceDate as YYYYMMDD]
[-g gender]
[-a minAge-maxAge]
[-o overflowPopulation]
[-c localConfigFilePath]
[-d localModulesDirPath]
[-i initialPopulationSnapshotPath]
[-u updatedPopulationSnapshotPath]
[-t updateTimePeriodInDays]
[-f fixedRecordPath]
[-k keepMatchingPatientsPath]
[--config*=value]
* any setting from src/main/resources/synthea.properties
Examples:
run_synthea Massachusetts
run_synthea Alaska Juneau
run_synthea -s 12345
run_synthea -p 1000
run_synthea -s 987 Washington Seattle
run_synthea -s 21 -p 100 Utah "Salt Lake City"
run_synthea -g M -a 60-65
run_synthea -p 10 --exporter.fhir.exExcerpt of 5,127 characters
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Would you bet a product on this? Bounded 0–100 and slow moving.
matched fp:4b1a4e632e12a960, topic:synthetic-data
matched fp:4b1a4e632e12a960, topic:simulation