Referring, Ordering and Supervising Provider NPI Explained
September 05, 2026
A professional health care claim can identify providers who perform several different roles. In addition to the billing and rendering providers, a claim may identify a referring provider, ordering provider or supervising provider.
Each of these roles describes the provider's relationship to the service or item being reported. When an NPI is required for one of these roles, the NPI identifies the health care provider performing that role.
These are provider roles rather than different types of NPIs. An NPI does not become a "referring NPI" or "ordering NPI." The NPI continues to identify the provider, while the claim indicates the role that provider is performing.
Referring vs. Ordering vs. Supervising Provider at a Glance
| Provider Role | General Meaning | CMS-1500 Qualifier |
|---|---|---|
| Referring Provider | Refers the patient to another provider or source for care, services or supplies. | DN |
| Ordering Provider | Orders an item, service, test or other care for the patient. | DK |
| Supervising Provider | Supervises services when identification of a supervising provider is applicable. | DQ |
The exact circumstances in which these provider roles must be reported can vary by service, health plan and program requirements.
What Is a Referring Provider NPI?
A referring provider is a health care provider who refers a patient to another provider or source for an item or service.
For example, a provider may refer a patient to another practitioner for specialized evaluation or treatment. When the referring provider must be identified on a claim, the provider's NPI can be used to identify the individual who made the referral.
A primary care physician refers a patient to a specialist for evaluation. When the applicable claim requires the referring provider to be identified, the primary care physician may be reported as the referring provider.
What Is an Ordering Provider NPI?
An ordering provider is a health care provider who orders an item or service for a patient.
Depending on the circumstances, an order might involve services or items such as diagnostic testing, laboratory services, imaging, medical equipment or other health care services.
When the ordering provider must be identified on the claim, the NPI identifies the provider who issued the order.
A physician orders diagnostic imaging that is performed by another provider or facility. When applicable, the physician who ordered the imaging may be identified as the ordering provider on the resulting claim.
What Is a Supervising Provider NPI?
A supervising provider is a provider who supervises another health care professional or the performance of services when a supervising provider is required to be identified.
The meaning and requirements surrounding supervision can depend on the service, provider type, payer or health care program involved. The presence of a supervising provider on a claim should therefore be understood in the context of the applicable billing and program requirements.
A service is furnished under circumstances in which the applicable billing rules require identification of the health care professional supervising the service. That provider may be reported as the supervising provider.
Are Referring, Ordering and Supervising NPIs Different Types of NPIs?
No. Referring, ordering and supervising describe the provider's role in relation to the service. They are not separate NPI entity types.
The NPI itself identifies the health care provider. Information elsewhere on the claim or transaction establishes the role associated with that provider.
This is similar to the distinction between billing and rendering providers. An NPI's entity type and the provider's role on a claim are separate concepts.
For more information about two other common professional claim roles, see Billing Provider NPI vs. Rendering Provider NPI: What's the Difference?
Can the Same Provider Be Referring, Ordering or Supervising?
A provider's role depends on the circumstances surrounding the service. The same health care provider can therefore perform different roles in different patient encounters or transactions.
For example, a physician might refer a patient to a specialist in one situation and order diagnostic testing in another. The physician's NPI remains the same; what changes is the role the provider performs in relation to the service.
More than one provider can also be involved in a patient's care, with each provider performing a different role.
Where Are Referring, Ordering and Supervising Providers Reported on the CMS-1500?
On the CMS-1500 professional claim form, Item 17 is used to report the name of a referring provider or other source. The form uses a two-character qualifier to identify which provider role is being reported.
| Qualifier | Provider Role |
|---|---|
| DN | Referring Provider |
| DK | Ordering Provider |
| DQ | Supervising Provider |
The qualifier is entered to the left of the vertical dotted line in Item 17 and indicates the role of the provider whose name is being reported.
The provider's NPI is reported separately in Item 17b when applicable.
For a closer look at these CMS-1500 fields, see HCFA-1500 Box 17 – Name of Referring Provider or Other Source and HCFA-1500 Box 17b – NPI.
How Are These Provider Roles Reported on an 837P Claim?
The ANSI X12 837P professional claim can identify referring, ordering and supervising providers in different provider loops depending on the role and circumstances of the claim.
Examples include:
- Loop 2310A – Referring Provider
- Loop 2310D – Supervising Provider
- Loop 2420E – Ordering Provider at the service-line level
Provider information within these loops can include the provider's name and NPI. The appropriate loop depends on the provider role, claim structure and applicable transaction requirements.
Is the Referring Provider the Same as the Rendering Provider?
Not necessarily. The rendering provider identifies the provider who performed or rendered the service being reported, while the referring provider identifies the provider who made the referral when referring provider information applies.
For example, a primary care physician could refer a patient to a specialist. The primary care physician may be the referring provider, while the specialist who performs the service may be the rendering provider.
The NPIs identify the respective providers; their positions and roles on the claim explain how those providers relate to the service.
Is the Ordering Provider the Same as the Rendering Provider?
Not necessarily. One provider may order a service while another provider performs it.
For example, a physician may order a diagnostic test that is performed by another provider or facility. The ordering provider and the provider performing or billing for the service can therefore be different entities.
In other circumstances, the provider who orders a service may also be involved in performing the service. The applicable claim-reporting requirements depend on the service and billing situation.
Is the Supervising Provider the Same as the Rendering Provider?
Not necessarily. Supervision and rendering describe different relationships to the service.
A rendering provider performs the service being identified, while a supervising provider performs a supervisory role when that role is applicable under the relevant requirements.
Because supervision rules can vary significantly by provider type, service and health care program, the presence or absence of a supervising provider should not be determined from the NPI alone.
Do All Claims Require a Referring, Ordering or Supervising Provider NPI?
No. These provider roles are situational rather than universally required on every professional claim.
Whether a referring, ordering or supervising provider must be identified can depend on factors such as:
- The service or item being billed
- The provider relationships involved
- The health plan or program
- Applicable enrollment requirements
- Applicable claim-reporting rules
A claim that does not involve one of these provider relationships would not automatically require an NPI simply because the corresponding field or electronic loop exists.
Medicare Ordering and Referring Provider Requirements
Medicare has specific requirements for providers who order or refer certain items and services. For Medicare fee-for-service, eligibility to order or refer is tied to factors such as the provider's enrollment status and eligible provider or specialty type.
CMS maintains ordering and referring information that can be used to determine whether a physician or non-physician practitioner has a current Medicare enrollment record that permits ordering or referring under Medicare requirements.
Medicare also applies service-specific restrictions. As a result, having an NPI by itself does not establish that a provider is eligible to order or refer every type of item or service for a Medicare beneficiary.
Can an NPI Lookup Identify the Referring, Ordering or Supervising Role?
An NPI lookup can help identify the provider associated with an NPI, but the NPI number itself does not indicate whether the provider is acting as a referring, ordering or supervising provider on a particular claim.
That role comes from the claim, transaction or other context in which the NPI is being used.
The Eclaims NPI Lookup can be used to review publicly available provider information associated with an NPI.
For help researching an NPI record, see How to Look Up an NPI Number.
Why Is the Correct Provider Role Important?
Provider roles help communicate which health care professionals or organizations were involved with a service and how they were involved.
A valid NPI does not necessarily mean that the provider has been identified in the correct role. Claim processing can depend on the relationship among the provider's identity, the reported provider role, the service and applicable payer or program requirements.
When reviewing a provider-related claim issue, it can therefore be useful to consider both questions:
Use provider information associated with the NPI to identify the individual or organization.
Review the claim or transaction to determine whether the provider is being reported as referring, ordering, supervising, rendering, billing or another applicable role.
Supporting NPI Resources
- What Is an NPI Number? Complete Guide to National Provider Identifiers
- How to Look Up an NPI Number
- Billing Provider NPI vs. Rendering Provider NPI: What's the Difference?
- NPI Type 1 vs. Type 2: What's the Difference?
- NPI Lookup
- HCFA-1500 Box 17 – Name of Referring Provider or Other Source
- HCFA-1500 Box 17b – NPI
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