Free OIG Exclusion Check

1. 11

   Enter the provider

   Type a first and last name, a business name or a 10-digit NPI. A lone surname is refused, because it would match hundreds of people, and an NPI with a wrong last digit is refused as mistyped.

2. 22

   We read the OIG list

   The entry is checked against the OIG's List of Excluded Individuals and Entities, which holds more than 84,000 entries.

3. 33

   Read the answer

   You see whether the provider is excluded, needs review or has no match, with the exclusion type, its date and the date of the list.

Bulk exclusion checks run the same check on a whole list with one CSV file.

The free tool checks one provider at a time. With a 1Lookup account you upload a CSV file in the dashboard, pick the column that holds the names or NPIs and download the same file back with the result columns filled in on every row. These rows are invented.

• 3 credits for each completed check, a clear one included, and nothing for a row that is not a valid name or NPI.
• Up to 2 million rows in one CSV file.
• Up to 200 API requests per 10 seconds for each API key, and each account can make up to 1,000 requests a minute in total across all its keys.

The OIG Exclusion Check API returns the same answer as JSON from one request.

Send the provider's name, or an NPI, to the endpoint with your API key. Every completed check costs 3 credits, a clear one included, and an entry that is refused as malformed or a list that cannot be read costs 0. The outcome is in classification.outcome and the date of the list is in classification.list_updated.

curl -X POST https://app.1lookup.io/api/v1/oig-exclusion-check \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"provider": "Sample Q Example", "state": "IL"}'

import requests

response = requests.post(
    "https://app.1lookup.io/api/v1/oig-exclusion-check",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={"provider": "Sample Q Example", "state": "IL"},
)
data = response.json()["data"]
print(data["classification"]["outcome"])

const response = await fetch('https://app.1lookup.io/api/v1/oig-exclusion-check', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({ provider: 'Sample Q Example', state: 'IL' })
})
const { data } = await response.json()
console.log(data.classification.outcome)

{
  "success": true,
  "data": {
    "classification": {
      "found": true,
      "outcome": "needs_review",
      "result_label": "Needs review",
      "match_count": 1,
      "name": "Sample Q Example",
      "exclusion_type_text": "License revoked, suspended or surrendered",
      "excluded_on": "2024-01-15",
      "list_updated": "2026-10-09"
    },
    "recommendations": { "primary_action": "REVIEW" },
    "metadata": { "credits_used": 3, "cache_hit": false }
  }
}

To check every provider on a list from your own software, see our OIG Exclusion Check API.

• A name match is flagged for review and never passed as a verdict.

  A name that matches an entry comes back as needs review, because a name alone does not prove who it is. An NPI that is on the list comes back as excluded.

• The exclusion type comes back in plain words.

  You see License revoked, suspended or surrendered, not a section code such as 1128b4 that you would have to look up in the Social Security Act.

• The date of the list is in every answer.

  The OIG replaces its list every month, so each answer says which date's list was read and you can see how current the check is.

• An NPI is checked before the list is read.

  The last digit of an NPI is a check digit. A number that fails it was mistyped, so it is refused at once instead of being searched for.

• 01

  Healthcare employers checking a candidate

  Look a candidate up by name before an offer and see whether an entry on the OIG list matches.

• 02

  Staffing agencies checking a clinician

  Check a nurse, therapist or physician by name or NPI before a placement.

• 03

  Practices and billing teams checking a vendor

  Check a vendor, a billing company or a contractor by its business name before it is paid.

• 04

  Credentialing teams checking a provider file

  Look an NPI up and see whether it is on the list, then check the name too.

• OIG Exclusion Check APICheck a whole list of providers by NPI or name, with the exclusion type, the NPI, the location and the date of the list.
• Free NPI Registry SearchFind a provider's NPI from a name, then check that NPI against the exclusion list.
• 1Lookup vs OIG LEIE Online SearchThe OIG's free search for up to five names at a time, against an exclusion check from an API or a CSV.
• 1Lookup vs Exclusion ScreeningMonthly plans for up to 100 screens, against a price per completed OIG check.
• 1Lookup vs ProviderTrustA quote-based monitoring platform, against a self-serve OIG check with a printed price.

People who check a provider against the exclusion list also look for these.

• oig exclusion check
• oig exclusion list search
• leie search
• check if a provider is excluded
• oig exclusion list npi
• medicare exclusion list check
• healthcare exclusion screening
• excluded provider lookup
• oig exclusion api
• monthly exclusion screening