NPI Registry Provider Leads: No 1,200-Result Cap

Pull every matching healthcare provider from the official CMS NPI Registry (NPPES): doctors, dentists, chiropractors, therapists, nurse practitioners, pharmacies, clinics, home health agencies, and every other provider type. Each comes back as a clean row with phone, practice and mailing address, specialty taxonomies, license numbers, and (for organizations) the authorized official's name, title, and phone.

The 1,200-row problem, solved

The NPI Registry API returns at most 200 rows per page and silently stops at 1,200 results per search. Most tools stop there, or quietly repeat the same page. This actor detects when a search is capped and automatically splits it by ZIP-code prefix (66*, 660*, 6606*, and so on) until every slice is complete. It then dedupes by NPI.

Real test: Dentists (individual) in Kansas returns 1,200 rows from a plain API search. With this actor it returned 1,897 unique dentists in about 40 seconds.

Who uses this

• Dental, medical, and pharma sales reps building territory lists
• Healthcare marketing agencies, SaaS (EHR, billing, scheduling), and staffing firms
• Medical billing and credentialing services
• Market researchers sizing a specialty by state or ZIP

Features

• Search by provider type (taxonomy), state, city, ZIP or prefix, name, or organization name, plus combinations. Lists are searched as a cross product.
• Practice-location state filter: the registry matches a state on any address. This actor keeps only providers that actually practice there, unless you turn that off.
• Primary specialty only, must have phone, NPI issued after a date (new practices).
• Monitor mode: schedule weekly or monthly and get only providers you have not received before.
• Polite request rate, automatic retries, and normalized output.

Input examples

All dentists practicing in Kansas:

{ "taxonomies": ["Dentist"], "states": ["KS"], "enumerationType": "individual" }

Home health agencies in Colorado with a phone, including the authorized official:

{ "taxonomies": ["Home Health"], "states": ["CO"], "enumerationType": "organization", "requirePhone": true }

Chiropractors and physical therapists who got an NPI in 2026, in Texas:

{ "taxonomies": ["Chiropractor", "Physical Therapist"], "states": ["TX"], "enumeratedAfter": "2026-01-01" }

Output example

{
  "npi": "1851023659",
  "entityType": "Organization",
  "name": "1 ABOVE THE REST",
  "otherNames": ["MOUNTAIN HOME HEALTH CARE"],
  "authorizedOfficial": { "name": "OLGA GERMAN", "title": "Owner", "credential": null, "phone": "7207396135" },
  "primaryTaxonomy": "Home Health",
  "primaryTaxonomyCode": "251E00000X",
  "taxonomies": [{ "code": "251E00000X", "description": "Home Health", "primary": true, "licenseNumber": null, "licenseState": null }],
  "practiceAddress": { "street1": "4465 NORTHPARK DR STE 307", "city": "COLORADO SPRINGS", "state": "CO", "zip": "80907-4238", "country": "US", "phone": "719-645-4291", "fax": null },
  "mailingAddress": { "street1": "6990 W 38TH AVE STE 202", "city": "WHEAT RIDGE", "state": "CO", "zip": "80033-4981", "country": "US", "phone": "720-739-6135", "fax": null },
  "phone": "719-645-4291",
  "additionalPracticeLocations": [],
  "endpoints": [],
  "identifiers": [],
  "enumerationDate": "2022-06-29",
  "lastUpdated": "2022-06-29",
  "status": "Active",
  "registryUrl": "https://npiregistry.cms.hhs.gov/provider-view/1851023659",
  "scrapedAt": "2026-10-27T06:29:33+00:00"
}

Individuals also include firstName, lastName, credential (DDS, MD, NP...), sex, and soleProprietor. endpoints lists Direct messaging or FHIR addresses when the provider has published them.

Notes

• Very large searches (for example, every nurse nationwide) work but take longer, because the registry API is the bottleneck. Narrow by state or provider type for speed.
• If a single 5-digit ZIP still has 1,200+ matches for your query, the run log will warn you. Add another filter, such as entity type or a more specific taxonomy.
• If you use phone numbers for outreach, you are responsible for TCPA and Do-Not-Call compliance.

Legal

NPI data is published by the U.S. Centers for Medicare & Medicaid Services (CMS) under its NPPES data dissemination policy. This actor is not affiliated with or endorsed by CMS or HHS.