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Credentialing playbook

NPI Registration and NPPES Record Management

The National Provider Identifier is the first identifier every enrollment depends on. We obtain Type 1 NPIs for individual providers and Type 2 NPIs for your organization, choose the right taxonomy codes, and keep the NPPES record aligned with every other system.

About 4 minute read. Reviewed September 2026 by the ClainetRCM credentialing team.

Getting an NPI is easy. Getting it right is not. The taxonomy code you select, the practice address you list and the way an individual NPI is linked to a group NPI all feed into Medicare, Medicaid and CAQH. A mismatch anywhere produces enrollment rejections and claim denials that are hard to trace back to their source.

ClainetRCM registers NPIs through NPPES with the correct provider type and taxonomy, sets up Type 2 NPIs for groups and facilities, and audits existing NPPES records so they agree with your licenses, PECOS and CAQH.

7-14 daysto onboard your practice end to end
Weeklystatus report on every open application
50 statesMedicare, Medicaid and commercial panels

Where this usually goes wrong

What ClainetRCM handles

One coordinator owns the file from intake to effective date, so you always know who to call and what is outstanding.

  • Type 1 NPI applications for physicians, NPPs, therapists and other individual providers
  • Type 2 NPI applications for groups, facilities, labs and subparts
  • Taxonomy code selection matched to license, specialty and payer requirements
  • NPPES record audit and correction for existing NPIs
  • Individual to group NPI linkage confirmed in PECOS and payer records
  • Ongoing NPPES updates for address, name and taxonomy changes

Type 1 versus Type 2 NPI

Type 1Individual providers: physicians, NPs, PAs, therapists, psychologists, dentists, chiropractors. One per person, for life, regardless of employer.
Type 2Organizations: group practices, clinics, hospitals, labs, DME suppliers, home health agencies. Tied to a Tax ID. Large organizations may register subparts.
TaxonomyA code describing the provider type and specialty. Must match the license and the specialty you enroll under with each payer.
Where it is usedEvery claim, PECOS, CAQH, Medicaid portals and payer applications.

NPI registration is part of the sequence covered on our healthcare business registrations page, alongside entity formation, EIN and CLIA.

How the work runs

The sequence is the same for every payer and provider type; what changes is which documents and portals each step touches.

  1. Intake and gap review

    Licenses, DEA, board certificates, malpractice, work history and NPI details are collected and compared against what each target payer asks for.

  2. Profile setup

    CAQH ProView, PECOS and payer portals are created or cleaned up, attested and linked to the correct Tax ID and locations.

  3. Application submission

    Every enrollment is filed in dependency order, with a tracking record for each payer, date and reference number.

  4. Follow-up on a fixed cadence

    Payers are contacted on a schedule. Requests for more information are answered the same business day.

  5. Approval, contract and handoff

    Effective dates, provider IDs and fee schedules are logged and loaded into your billing system.

Frequently asked questions

How long does it take to get an NPI?

Online applications through NPPES are often approved within a few business days, sometimes the same day. Paper applications take several weeks. We file online.

Does a new practice need its own NPI?

If the practice bills under its own Tax ID, yes, it needs a Type 2 organizational NPI. Each provider also keeps their individual Type 1 NPI, which is listed as the rendering provider on claims.

Can I change my NPI taxonomy?

Yes, through NPPES at any time. If the change affects the specialty you are enrolled under, payers and PECOS need to be updated too, which we coordinate. See PECOS enrollment.

What is the difference between an NPI and a Tax ID?

The NPI identifies a provider or organization for healthcare transactions. The Tax ID identifies the entity for tax and payment purposes. Claims carry both, and payers link them during enrollment.

Read next

Or return to the provider credentialing overview.

Find out what your practice is losing to denials.

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