Medical & Health Data APIs
Medical and health data APIs here are mostly free public datasets from US agencies and international bodies. openFDA covers drug labels, recalls and adverse events, ClinicalTrials.gov searches registered trials by condition or sponsor, and the WHO Global Health Observatory returns country health statistics by year. Regional feeds track ER wait times in Quebec and ER closures across Canada.
| API | Pricing | Auth | Format | Free tier | Status |
|---|---|---|---|---|---|
ClinicalTrials.gov APISearch 500,000+ registered clinical trials by condition, drug, sponsor, location and recruitment status. Health & Science › Medical & Health Data | Free | None | JSON | — | Live |
CMS.gov Provider DataUS Medicare provider directories and quality metrics (hospitals, dialysis, nursing homes) as open datasets. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Untested |
Coronavirus in the UKEngland public health surveillance data (COVID-19 and other diseases) from the UKHSA dashboard. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Deprecated |
Covid Tracking ProjectArchived daily US COVID-19 case, test, and hospitalization data by state, collected through March 2021. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Deprecated |
Covid-19 API (M Media Group)Historical COVID-19 case, death, recovery and vaccination counts by country and continent. Health & Science › Medical & Health Data | None | JSON | — | Deprecated | |
Covid-19 IndiaHistorical India COVID-19 case, testing and vaccination counts by state and district, frozen at Oct 2021. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Deprecated |
COVID-19 Tracker CanadaArchived historical Canadian COVID-19 case, death, vaccination and testing dataset, no longer updated. Health & Science › Medical & Health Data | JSON | — | Deprecated | ||
Cure Cancer With AIOncology data: PubMed papers, cancer news, FDA approvals, clinical trials and drug-interaction predictions. Health & Science › Medical & Health Data | Free | API key | JSON | 1k–10k/day | Live |
DailyMed web servicesOfficial FDA drug label (SPL) documents with NDCs, RxCUIs, drug classes, packaging and label version history. Health & Science › Medical & Health Data | None | JSON | Unlimited | Live | |
disease.shGlobal and country-level COVID-19 and influenza case, death, and vaccination statistics as JSON. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Live |
ERstatTracks live Canadian ER closures, service disruptions and per-province coverage stats Health & Science › Medical & Health Data | Freemium | API key | JSON | — | Live |
HealthCare.gov Content APIMachine-readable glossary and educational content from the US health insurance marketplace. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Live |
MedlinePlus GeneticsGenetic conditions, genes, chromosomes and mtDNA summaries from the NIH, as JSON or XML. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Live |
NPPES NPI RegistryLook up US healthcare providers by NPI number, name, or location from CMS's official registry. Health & Science › Medical & Health Data | None | JSON | Unlimited | Live | |
Open Data NHS ScotlandHealth and social care statistics and datasets published by Public Health Scotland via a CKAN API. Health & Science › Medical & Health Data | None | JSON | Unlimited | Live | |
openFDASearchable US FDA records on drug labels, recalls, adverse events, and device/food safety. Health & Science › Medical & Health Data | Free | None | JSON | 10k+/day | Live |
Psychologie et SérénitéClinical psychology concepts, blog articles, and a book catalog from a French CBT practitioner. Health & Science › Medical & Health Data | Free | None | JSON | 10k+/day | Live |
RxNorm (NLM RxNav)Normalized U.S. drug names and codes: RxCUIs, NDCs, brands, generics and ingredient relationships. Health & Science › Medical & Health Data | Free | None | JSON | 10k+/day | Live |
Stanza DSCSA VerifierValidates FDA DSCSA/EU FMD pharmaceutical 2D barcodes and converts NDC codes to GTIN. Health & Science › Medical & Health Data | Freemium | API key | JSON | <100/day | Live |
Urgences QuébecQuebec emergency room crowding, stretcher occupancy, and wait times, refreshed every 15 minutes. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Live |
Verified Supplement DataRanks supplements by cost per clinically effective dose, citing PubMed evidence for each pick. Health & Science › Medical & Health Data | Free | None | JSON | Unlimited | Live |
WHO Global Health Observatory (GHO) OData APICountry-by-year WHO health statistics such as life expectancy, mortality, disease and immunisation rates. Health & Science › Medical & Health Data | Free | None | JSON | — | Live |
ClinicalTrials.gov APIFreeLive
Search 500,000+ registered clinical trials by condition, drug, sponsor, location and recruitment status.
None · JSON
—
OpenAPI spec
CMS.gov Provider DataFreeUntested
US Medicare provider directories and quality metrics (hospitals, dialysis, nursing homes) as open datasets.
None · JSON
Unlimited
no machine-readable spec
Coronavirus in the UKFreeDeprecated
England public health surveillance data (COVID-19 and other diseases) from the UKHSA dashboard.
None · JSON
Unlimited
no machine-readable spec
Covid Tracking ProjectFreeDeprecated
Archived daily US COVID-19 case, test, and hospitalization data by state, collected through March 2021.
None · JSON
Unlimited
no machine-readable spec
Covid-19 API (M Media Group)Deprecated
Historical COVID-19 case, death, recovery and vaccination counts by country and continent.
None · JSON
—
no machine-readable spec
Covid-19 IndiaFreeDeprecated
Historical India COVID-19 case, testing and vaccination counts by state and district, frozen at Oct 2021.
None · JSON
Unlimited
no machine-readable spec
COVID-19 Tracker CanadaDeprecated
Archived historical Canadian COVID-19 case, death, vaccination and testing dataset, no longer updated.
· JSON
—
no machine-readable spec
Cure Cancer With AIFreeLive
Oncology data: PubMed papers, cancer news, FDA approvals, clinical trials and drug-interaction predictions.
API key · JSON
1k–10k/day
OpenAPI spec
DailyMed web servicesLive
Official FDA drug label (SPL) documents with NDCs, RxCUIs, drug classes, packaging and label version history.
None · JSON
Unlimited
no machine-readable spec
disease.shFreeLive
Global and country-level COVID-19 and influenza case, death, and vaccination statistics as JSON.
None · JSON
Unlimited
OpenAPI spec
ERstatFreemiumLive
Tracks live Canadian ER closures, service disruptions and per-province coverage stats
API key · JSON
—
llms.txt
HealthCare.gov Content APIFreeLive
Machine-readable glossary and educational content from the US health insurance marketplace.
None · JSON
Unlimited
OpenAPI spec
MedlinePlus GeneticsFreeLive
Genetic conditions, genes, chromosomes and mtDNA summaries from the NIH, as JSON or XML.
None · JSON
Unlimited
no machine-readable spec
NPPES NPI RegistryLive
Look up US healthcare providers by NPI number, name, or location from CMS's official registry.
None · JSON
Unlimited
OpenAPI spec
Open Data NHS ScotlandLive
Health and social care statistics and datasets published by Public Health Scotland via a CKAN API.
None · JSON
Unlimited
no machine-readable spec
openFDAFreeLive
Searchable US FDA records on drug labels, recalls, adverse events, and device/food safety.
None · JSON
10k+/day
no machine-readable spec
Psychologie et SérénitéFreeLive
Clinical psychology concepts, blog articles, and a book catalog from a French CBT practitioner.
None · JSON
10k+/day
OpenAPI spec · llms.txt
RxNorm (NLM RxNav)FreeLive
Normalized U.S. drug names and codes: RxCUIs, NDCs, brands, generics and ingredient relationships.
None · JSON
10k+/day
no machine-readable spec
Stanza DSCSA VerifierFreemiumLive
Validates FDA DSCSA/EU FMD pharmaceutical 2D barcodes and converts NDC codes to GTIN.
API key · JSON
<100/day
llms.txt
Urgences QuébecFreeLive
Quebec emergency room crowding, stretcher occupancy, and wait times, refreshed every 15 minutes.
None · JSON
Unlimited
llms.txt
Verified Supplement DataFreeLive
Ranks supplements by cost per clinically effective dose, citing PubMed evidence for each pick.
None · JSON
Unlimited
OpenAPI spec · MCP server · llms.txt
WHO Global Health Observatory (GHO) OData APIFreeLive
Country-by-year WHO health statistics such as life expectancy, mortality, disease and immunisation rates.
None · JSON
—
no machine-readable spec
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Choosing a Medical & Health Data API
Is there a free Medical & Health Data API?
Yes. openFDA, ClinicalTrials.gov API, WHO Global Health Observatory (GHO) OData API, CMS.gov Provider Data, Cure Cancer With AI and 7 others are free to use, and ERstat and Stanza DSCSA Verifier have a free tier alongside paid plans.
Which Medical & Health Data APIs work without an API key?
openFDA, ClinicalTrials.gov API, WHO Global Health Observatory (GHO) OData API, CMS.gov Provider Data, DailyMed web services and 9 others need no key or sign-up, so you can try them with a plain request.
Can I call a Medical & Health Data API from front-end JavaScript?
openFDA, ClinicalTrials.gov API, disease.sh, Psychologie et Sérénité, RxNorm (NLM RxNav) and 2 others allow cross-origin requests and need no key, so they work straight from the browser. For the others, call them from your server so your key stays private.
Can I use Medical & Health Data APIs in a commercial project?
openFDA, MedlinePlus Genetics, Open Data NHS Scotland, Psychologie et Sérénité and Verified Supplement Data permit commercial use. WHO Global Health Observatory (GHO) OData API, disease.sh and ERstat restrict it, for example to non-commercial or attributed use, so read the terms first.
Which Medical & Health Data APIs work with AI agents?
Verified Supplement Data has both an MCP server and an OpenAPI spec. ClinicalTrials.gov API, Cure Cancer With AI, disease.sh, HealthCare.gov Content API, NPPES NPI Registry and 1 other publish an OpenAPI spec for generating clients and tools.
More specific: Drug Data APIs
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