Get a US Physician Dataset with Specialties, Affiliations, and Networks

A usable US physician dataset starts with the NPI, then adds sourced records for specialty, affiliations, and payer network context. The NPI identifies the provider. It does not tell you where they practice today, which hospitals they work with, or which plans they contract with. Those answers come from other sources, and every field should carry its source and date.

Gigasheet's Provider Intelligence joins those sources to the NPI, alongside nationwide negotiated rates, and delivers them through the Price Transparency Explorer, API, bulk licensing, or an NPI-keyed data append.

What is provider intelligence and NPI enrichment?

Provider intelligence is a structured record that tells you who a clinician or organization is, where they operate, who they are affiliated with, and how the market pays them. NPI enrichment is the process of attaching those fields to an NPI you already have.

The NPI is the right anchor because it is required. Under 45 CFR 162.410, HIPAA-covered health care providers must obtain an NPI, use it on standard transactions, and report changes to their required data within 30 days. That makes the NPI the most reliable key for joining provider data from different sources.

Where can I get physician data with specialties, affiliations, and accepted insurance?

From a combined dataset. No single public file covers all of it. You need four groups of records, matched on the NPI:

• Provider identity: NPI, name, entity type, and practice addresses.
• Clinical classification: taxonomy codes, normalized to a specialty a buyer can use.
• Organization relationships: practice groups, hospitals, health systems, and locations.
• Payer context: payer, plan, network, geography, and the date the association was published.

You can assemble this yourself from public files, or license it already joined. Gigasheet's Market Intelligence Graph links clinician profiles to negotiated rates and published payer and plan associations, with each record carrying its public source and reporting date.

What does an NPI record tell you?

An NPI record tells you who a provider is and what they reported to NPPES. The number itself carries nothing. CMS describes the NPI as a 10-digit, intelligence-free identifier that does not carry information about a provider's location or specialty. The detail lives in the NPPES record attached to it.

• NPI: used for provider and organization matching. Ask: is this the current NPI, and is it an individual (Type 1) or organization (Type 2)?
• Provider name: used for identity resolution. Ask: are other names and prior names retained?
• Taxonomy: used for specialty classification. Ask: is the taxonomy normalized to a specialty you can filter on?
• Address: used for location matching. Ask: is this a practice location, a mailing address, or a billing address?
• Organization name: used for group and facility linkage. Ask: is the relationship current, and where did it come from?

Fields vary by record. Not every provider reports every field, and self-reported data can lag reality despite the 30-day rule.

Data sources and refresh: CMS publishes the NPPES downloadable file as a full replacement file each month, with weekly incremental files in between, and updates the NPI Registry daily. Both are free. Only data disclosable under FOIA is released.

Does NPI data show accepted insurance?

No. An NPI record says nothing about which plans a physician contracts with. Payer participation needs a separate source, plus plan, network, and date context.

• "Does this doctor take payer X?" Needs the payer, plan, product, network, location, and the date the association was published.
• "Is this doctor in network?" Needs the specific network and service area.
• "Can this patient see this doctor?" Needs the member's plan design, referral rules, appointment availability, and current directory status. That is a member question, not a dataset question.

Transparency in Coverage files help here. A published negotiated rate ties a provider to a payer, plan, and network at a point in time. Treat it as evidence of a contract, not proof of current participation. Confirm participation with the health plan before relying on it for steering or member decisions.

"Accepted insurance" is only meaningful when you define the payer, plan, network, geography, and verification date behind it.

How do I match physicians to practice groups, hospitals, and networks?

Match on identifiers first, names last.

1. Start with the individual NPI. It is the most stable key.
2. Link to the billing entity. Use the TIN and organization NPI the physician bills under. One clinician can bill under several groups.
3. Roll up to the health system. Connect groups and facilities to their parent organization.
4. Attach payer context. Join negotiated rates and plan associations on NPI and TIN.
5. Keep the dates. Record when each relationship was observed, so stale links can age out.

Name matching is a fallback. Common names, abbreviations, and DBAs create false matches.

How should you evaluate a provider intelligence dataset?

Ask where every field came from, when it was last updated, and what entity it represents.

• Coverage: physicians only, or all clinicians and organizations?
• Matching: individual NPI, organization NPI, TIN, location, and hospital relationships.
• Specialty logic: raw taxonomy, normalized specialty, or both.
• Affiliation logic: declared, observed, contracted, or inferred? Each means something different.
• Network fields: payer, plan, product, network, service area, and publication date.
• Refresh schedule: full refresh, incremental changes, and whether history is kept.
• Delivery: flat files, API, bulk licensing, data append, or interactive analysis.
• Provenance: source and date for every material field.

Any vendor should be able to answer each of these in writing. If they cannot tell you where a field came from, do not build decisions on it.

How can Gigasheet support provider and price transparency analysis?

Gigasheet connects provider intelligence to nationwide healthcare price transparency data, so you see who a provider is and how the market pays them in one place.

Provider Intelligence profiles include, where available:

• Identity and practice: specialty, board certifications, education, hospital affiliations, locations, languages, and telehealth and new-patient availability.
• Verified contact and location: website, phone, address, and LinkedIn.
• Network listings: published payer and plan associations.
• Commercial pricing: negotiated rates, Medicare benchmarks, local market comparisons, and Provider Rate Scores.
• Regulatory standing: public state and federal regulatory records that flag known disciplinary actions, exclusions, or revocations.
• Medicare and industry ties: Medicare enrollment or opt-out status, and manufacturer payments reported under Open Payments.
• Provider Reputation Scores: built from online signals. Not a clinical quality measure.

Each record carries its public source and reporting date. Network associations and rates do not confirm current participation, and regulatory indicators do not replace formal credentialing.

Ways to get it:

• Price Transparency Explorer: search a provider and see the profile next to their rates.
• API: build provider intelligence into your own product or workflow.
• Bulk data: license the datasets for your own warehouse.
• Data append: send an NPI-keyed list, with TINs and organization names resolved to NPI, and get the enriched file back, typically the same business day.

Tell us the fields, geography, and payer coverage you need. Request a Demo.

Last updated November 3, 2026.