CMS
Open Payments →Financial transfers from manufacturers to physicians and teaching hospitals.
CMSProvider performanceObserved 2026-06-14
Medicare Opt Out Affidavits
Physicians and practitioners who filed an affidavit opting out of Medicare — name, specialty, and opt-out effective/end dates. NPI is present where CMS published one; entity-graph linkage is deferred. Source:
Illustrative FHIR Practitioner mapping
How one record can be normalized.
{
"resourceType": "Practitioner",
"id": "optout-example",
"_source": "cms-opt-out-affidavits",
"_methodology": "cms-opt-out/v1",
"extension": [{ "url": "optOutEffectiveDate", "valueDate": "2024-01-01" }]
}This example documents a normalized shape; it does not establish that a FHIR endpoint or bulk export is available for this catalog entry. When a record includes _source, _methodology, snapshot-date, or confidence fields, those fields are nullable and delivery surfaces can return different subsets. Published bulk files are listed separately in the bulk manifest.
Fields in this record
What each field in the illustrative Practitioner mapping means.
The fields below are derived from the displayed illustrative FHIR Practitioner mapping. When a record includes source-metadata fields (_source, _methodology, and a snapshot date), they describe that delivered record. Those fields are nullable and may be absent from a response; identity fields key the record and data fields carry the measured values.
| Field | Type | Role |
|---|---|---|
resourceType | string | Identity |
id | string | Identity |
_source | string | Provenance |
_methodology | string | Provenance |
extension | array | Data |
Dataset facts
| Field | Value |
|---|---|
| Agency | |
| Category | Provider performance |
| Records | |
| Temporal coverage | 1998–2026 |
| Publisher cadence (nominal) | Monthly |
| Load timing | No load-time guarantee; date shown is the catalog observation for this row count. |
| Catalog observation date | 2026-06-14 |
| Illustrative FHIR mapping | Practitioner |
| Methodology | cms-opt-out/v1 |
| Measured | Practitioner name, specialty, opt-out effective and end dates per affidavit |
| Upstream source | data.cms.gov → |
Get access
How to reach this dataset.
Dataset-specific delivery formats are confirmed during pilot review. This catalog entry does not promise a bulk file or FHIR endpoint. Pilot requests are reviewed within one business day; there is no charge during the pilot period.
Related · Provider performance
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QPP Individual Scores →Individual clinician performance scores from the Quality Payment Program.
CMS
PECOS Ordering & Referring →Medicare enrollment status for providers eligible to order and refer services.