NPI Provider Locations

US healthcare providers from the official NPI Registry — one row per practice location, with specialty in plain language, licence number, phone, fax, and the authorized official for organizations.

No login. No API key. No proxies.

One row per location, not per provider

The registry returns a provider with their addresses nested inside. For a field team that is the wrong shape: a practice operating from three sites is three targets, three phone numbers, three visits — and a single row hides two of them.

Measured on real data:

Query	Providers	Location rows	Gain
Hospitalists, New York organizations	23	40	+74 %
Cardiology, Houston	3	5	+67 %
Dentists, California	48	60	+25 %

Phone coverage runs 97–100 % on practice locations.

Mailing addresses are skipped by default. A mailing address is often a PO box or a billing service — the wrong door for a visit — but you can include them with one switch when you need them for correspondence.

The authorized official

For organizations, the registry names the person who signs for the entity — CFO, Administrator, Owner — with their title and often a direct phone number. That is the decision-maker, and it comes free with the record.

The Decision makers view in the dataset shows exactly that column set.

Output

Field	Example
providerName	ADIRONDACK MEDICAL CENTER
entityType	Organization / Individual
specialty	Dentist, General Practice
taxonomyCode	1223G0001X
otherSpecialties	secondary taxonomies
licenseNumber, licenseState	54634, CA
addressType	Practice location / Additional location / Mailing
address1, address2, city, state, postalCode, postalCodeFull
phone, fax	518-897-2479
authorizedOfficial, authorizedOfficialTitle, authorizedOfficialPhone	CURTIS EADE, CFO
credential, gender, status, soleProprietor
enumerationDate, lastUpdated
npi, npiUrl	1760813802

postalCode gives the five-digit ZIP for joins; postalCodeFull keeps the ZIP+4 exactly as registered.

Input

{
  "taxonomy": "Dentist",
  "state": "CA",
  "practiceLocationsOnly": true,
  "maxItems": 500
}

Field	Default	Notes
taxonomy	Dentist	Specialty as the registry spells it
state	CA	Two-letter code
entityType	both	Individuals, organizations, or both
practiceLocationsOnly	true	Skip mailing addresses
onlyWithPhone	false	Keep only locations with a phone number
maxItems	500	Counts locations, not providers
city, postalCode	—	Narrow geographically
organizationName, firstName, lastName	—	Search by name

The registry refuses a search on state alone. Keep a specialty, city, postcode or name alongside it — the Actor says so plainly instead of returning an empty file.

Use cases

• Medical device and pharma field sales — territory lists by specialty and postcode, one row per site to visit.
• Healthcare staffing — practices in a specialty and area, with phone.
• Provider network building — who practises where, with licence numbers.
• Market sizing — count providers by specialty across states.
• Data cleaning — verify an NPI, its current specialty and address.

Limits, honestly

• Specialty is matched on the registry's own wording. "Cardiology" matches several taxonomies including "Pharmacist, Cardiology"; a narrow query may return adjacent specialties. Check specialty and taxonomyCode on the rows.
• Licence numbers are present on roughly a third to a half of rows, depending on specialty — organizations often have none.
• The registry reflects what providers self-report and can lag a move or a retirement. lastUpdated tells you how stale a record is.
• This is provider directory data, not patient data, and contains no clinical information.
• Requests are paced out of courtesy to a free public service.
• Not affiliated with CMS or the NPI Registry.