10 Credentialing Terms Every Healthcare Administrator Should Understand

A plain-language glossary of the terms that define the credentialing process

Credentialing Has Its Own Language

If you are new to healthcare administration, or if credentialing has recently landed on your plate, the terminology can feel overwhelming. I have spent close to two decades working inside hospital credentialing and medical staff governance, and the language has a real learning curve. Acronyms stack on top of acronyms, and misunderstanding a term can have real consequences. This glossary covers the ten terms you will encounter most often, explained in plain language.

1. Primary Source Verification (PSV)

Primary source verification is the process of confirming a provider's credentials directly with the original issuing authority. Instead of accepting a copy of a medical school diploma at face value, PSV means contacting the medical school directly. This applies to licenses, board certifications, training, education, and other credentials. PSV is required by accreditation bodies like the Joint Commission and NCQA, and it is the foundation of any credentialing program. In my hospital work, PSV documentation was one of the first things a compliance reviewer examined.

2. CAQH Provider Data Portal

The CAQH Provider Data Portal (formerly CAQH ProView) is a centralized platform where providers enter and maintain their credentialing information. Currently, 2.5 million healthcare providers and more than 1,000 health plans participate. [1] Health plans and healthcare organizations access the Portal to pull verified provider data during the enrollment process. Keeping a CAQH profile current and properly attested is one of the most important things a provider or credentialing team can do to prevent enrollment delays. Participation is voluntary but effectively required by most payers.

3. NPI (National Provider Identifier)

The National Provider Identifier is a unique 10-digit number assigned to healthcare providers in the United States. It is issued by CMS through the National Plan and Provider Enumeration System (NPPES). The NPI is used in HIPAA standard transactions, including billing, claims, and enrollment. Every covered healthcare provider that conducts HIPAA standard transactions needs one, and the number follows them throughout their career regardless of employer or state.

4. OIG LEIE (List of Excluded Individuals/Entities)

The Office of Inspector General maintains the LEIE, a list of individuals and entities excluded from participation in federal healthcare programs including Medicare and Medicaid. If your organization bills federal programs, you should screen providers and relevant staff against the LEIE before hire or contracting and on a recurring basis. OIG recommends monthly screening to minimize potential overpayment and civil monetary penalty liability, though there is no specific statute or regulation requiring a defined screening frequency. [2] Anyone who hires an individual or entity on the LEIE may be subject to civil monetary penalties. [3] This is one of those areas where organizations get tripped up simply by not having a documented, consistent process.

5. SAM (System for Award Management)

SAM is a federal database that tracks entities excluded from receiving federal contracts or certain types of federal financial assistance. Healthcare organizations that participate in Medicare, Medicaid, or other federal programs should screen providers against SAM.gov in addition to the OIG LEIE. The two databases overlap but are not identical, so checking both is standard practice for organizations with federal billing obligations. OIG recommends the LEIE as the primary source for OIG exclusion information because it is maintained directly by OIG and updated monthly. [2]

6. Payer Enrollment

Payer enrollment is the process by which a provider becomes an in-network participant with a specific insurance company. This is distinct from credentialing, which verifies the provider's qualifications. Enrollment is what allows the provider to bill that payer and receive reimbursement. The process involves submitting an application, providing credentialing documentation, and waiting for the payer to approve the provider's network participation. Timelines vary by payer but typically range from 30 to 90 days, with some taking longer. Providers and administrators conflate credentialing and enrollment regularly. They are related, but they are not the same thing.

7. Delegated Credentialing

Delegated credentialing occurs when a health plan allows a healthcare organization to perform credentialing activities on its behalf, rather than the health plan conducting its own verification. This is common in large health systems and credentialing verification organizations (CVOs). The delegating health plan sets the standards and audits the organization's credentialing processes to ensure compliance. It can significantly speed up enrollment for organizations that have the infrastructure to support it. If your organization has a delegated agreement, your credentialing process carries additional documentation and audit requirements.

8. Non-Delegated Credentialing

In a non-delegated model, the health plan performs credentialing directly. The provider or their representative submits an application and supporting documentation, and the plan conducts its own verification and approval process. This is the default model for most small to mid-sized organizations. Non-delegated credentialing typically takes longer because the provider's file must pass through the payer's internal review process, and the organization has limited ability to accelerate the timeline. Understanding whether your payer agreements are delegated or non-delegated is critical to setting realistic onboarding expectations.

9. Credentialing Verification Organization (CVO)

A CVO is a third-party organization that performs credentialing activities on behalf of healthcare organizations or health plans. CVOs handle primary source verification data collection and sometimes support credentialing committee review and decision workflows. They are particularly common among organizations that manage large numbers of providers and want to centralize the verification function. NCQA and URAC both offer accreditation programs for CVOs.

10. Privileging

Privileging is the process by which a healthcare organization authorizes a provider to perform specific clinical services within that organization. It is closely related to credentialing but distinct from it. Credentialing verifies that a provider is qualified. Privileging determines which specific procedures and clinical activities the provider is authorized to do at a specific facility. A surgeon may be credentialed by a hospital but only privileged to perform certain procedures based on their training and experience. Managing the privileging process alongside credentialing was a significant part of my hospital role, and the two functions need to stay tightly coordinated.

Build Your Credentialing Vocabulary

The terms above come up constantly in credentialing work. Understanding them clearly is the foundation for everything else.

References

[1] CAQH: Provider Data Portal overview and participation figures. View resource.

[2] OIG Special Advisory Bulletin on the Effect of Exclusion from Federal Health Care Programs (2013). View bulletin.

[3] OIG Background Information: Exclusion authority under Section 1128 of the Social Security Act. View resource.