NPI lookup
Find a doctor’s or practice’s National Provider Identifier by name, or check who an NPI belongs to: specialty, license, practice address and whether it’s active. Answers come straight from the CMS NPI Registry (NPPES).
20 free lookups a day, no account needed. Search by a person’s first and last name, an organization’s name, or an NPI number. Add a state to narrow a common name.
Jane Example, MD
- NPI
- 1234567893
- Type
- Individual (NPI-1)
- Status
- Active
- Primary specialty
- Family Medicine, taxonomy 207Q00000X
- License
- A123456, CA
- Practice address
- 100 Main St, Springfield, CA 90210
- Enumerated
- 12 May 2008
Example result with made-up details.
What an NPI lookup tells you
Every US healthcare provider that bills insurance has a National Provider Identifier. The NPI Registry is public, so anyone can check one.
- Who the provider is
- The individual’s name and credential, or the organization’s legal name. NPI-1 numbers belong to people, NPI-2 numbers to organizations.
- What they practice
- The primary taxonomy (specialty) code and description, with the state license number tied to it.
- Where and whether
- The practice location, phone number, and when the NPI was issued and last updated.
Need more than 20 a day?
Credentialing, claims and onboarding teams check NPIs in bulk. On the TrustLookup API an NPI lookup by number uses no credits on any plan, and you can upload a CSV of numbers to check them all at once. Name search is on this page only.
Request
curl https://api.trustlookup.io/v1/lookup \
-H "Authorization: Bearer $TRUSTLOOKUP_KEY" \
-d q="1234567893" \
-d checks="npi"Response (shortened)
{
"type": "npi",
"results": {
"npi": {
"ok": true,
"credits": 0,
"data": {
"npi": "1234567893",
"found": true,
"name": "Jane Example",
"credential": "MD",
"type": "individual",
"taxonomy": {
"code": "207Q00000X",
"description": "Family Medicine",
"license": "A123456",
"state": "CA"
},
"status": "active"
}
}
}
}Questions
Is this NPI lookup free?
Yes. The NPI Registry is public data from CMS, and this page answers up to 20 searches a day without an account. On the API, NPI lookups by number use no credits.
How do I find a provider’s NPI by name?
Type the person’s first and last name, like Jane Smith, or the start of an organization’s name, like Mayo Clinic, and pick a state if the name is common. You’ll see up to 10 matches with their NPI, specialty and city. Open one to see the full record.
What’s the difference between NPI-1 and NPI-2?
NPI-1 (Type 1) numbers belong to individual providers such as doctors, nurses and therapists. NPI-2 (Type 2) numbers belong to organizations such as hospitals, clinics and group practices.
Why does a valid-looking NPI come back as not found?
The 10th digit is a check digit, so we catch typos before the lookup. A number that passes the check but isn’t found was either never issued or has been deactivated.
How current is the data?
We ask the NPI Registry directly and reuse an answer for the same NPI for up to 7 days. Providers update their own records, so the registry is only as current as their last update, shown as “Last updated”.
Run these checks from your app
250 free credits every month for phone, email, IP and domain checks. NPI, USDOT and blacklist checks don’t use credits.