Provider enrollment and credentialing are two different yet related processes that authorize physicians and other healthcare providers to engage in insurance networks and bill payers for services provided. Credentialing is a process that checks the qualifications of a provider, including licensing, education, training, and disciplinary history. The contractual relationship is formed through enrollment between the provider and the payer and allows the submission of claims and reimbursement.
Without credentialing, there is no enrollment.
How Provider Enrollment and Credentialing Works
Step 1: Obtain or Verify the National Provider Identifier (NPI)
Each physician should have their NPI issued by the National Plan and Provider Enumeration System (NPPES) prior to starting enrollment. All Medicare and Medicaid claims should have the NPI. The initial step is to become a provider or supplier of Medicare.
Step 2: Complete or update the CAQH ProView profile
CAQH ProView is the universal credentialing data source of most commercial payers. Automatic delays are caused by old CAQH data, such as old contact information, different taxonomy codes, or inconsistent documents. Re-attestation of the profiles should be done every 120 days.
Step 3: Submit Medicare Enrollment via PECOS
PECOS (Provider Enrollment, Chain, and Ownership System) is the CMS online system of managing Medicare enrollment. It enables providers to make an initial enrollment application, revalidation, and practice information electronically. Applications are not paperwork, which saves time in the mail and data entry mistakes. (CMS PECOS Enrollment Applications, cms.gov)
Step 4: Apply for Medicaid Enrollment
The processes of Medicaid are state-specific. Providers are enrolled in the KanCare system in Kansas. All state Medicaid programs have their own application, schedule, and documentation requirements independent of Medicare PECOS enrollment.
Step 5: Submit Commercial Payer Applications
A provider has to be credentialed separately with each commercial payer they plan to bill—United Healthcare, Aetna, Blue Cross Blue Shield, Cigna, and Humana. Volume has no shortcuts. Application of payers is autonomous.
Step 6: Hospital and Facility Privileging (If Applicable)
Privileging is whereby certain clinical procedures that an authorized provider is entitled to perform in a specific facility are established. Two doctors with equal qualifications may be assigned varying privileges due to their capabilities and hospital-specific resources. This step is applicable to proceduralists, physicians, and surgeons who work in hospitals.
Step 7: Ongoing Monitoring and Revalidation
Credentialing is not a single event. Recredentialing is done every 2-3 years based on the payer. OIG and license monitoring every month are currently required by the 2025 NCQA standards. Retiring providers, those who surrender their license or discontinue Medicare services, are expected to withdraw officially in 90 days through PECOS.
Table: Provider Enrollment vs. Credentialing: Side-by-Side Comparison
| Provider Credentialing | Provider Enrollment (Payer Enrollment) | |
| Purpose | Verify provider qualifications | Establish billing rights with a payer |
| Governed by | NCQA, The Joint Commission, state boards | CMS, commercial payer policies, state Medicaid |
| Primary data source | CAQH ProView, primary source verification | PECOS (Medicare), payer portals (commercial) |
| Timeline | 90–120 days (NCQA 2025 standards) | 60–150 days depending on payer |
| Renewal cycle | Every 2–3 years + monthly monitoring | Revalidation every 3–5 years (Medicare) |
| Application fee | Varies by facility/health plan | $750 Medicare (2026); commercial payers vary |
| Consequence of gap | The provider cannot participate in the network. | The provider cannot bill; claims are denied |
Provider Validation: Ongoing Compliance After Enrollment
Provider validation is the post-enrollment process of continuously verifying that a provider remains in good standing with licensing boards, payers, and federal exclusion databases. This is not optional.
Under the 2025 NCQA standards, healthcare organizations must review every provider every 30 days. Monthly reviews cover:
- State license status
- OIG List of Excluded Individuals and Entities (LEIE)
- SAM.gov federal exclusion screening
- State medical board disciplinary actions
- DEA registration currency
Real-time monitoring systems flag issues immediately, expired licenses, new disciplinary actions, or federal exclusions, preventing compliance violations before they impact the practice. Missing a single check creates compliance exposure. Billing Medicare with an OIG-excluded provider triggers repayment demands and potential civil monetary penalties.
The 2026 Changes That Affect Every Physician’s Enrollment and Credentialing
Regulatory conditions of enrollment and credentialing had changed substantially in 2025-2026. The use of practices using 2024 procedures is still subject to delays and possible compliance gaps.
NCQA 2025 Standards (Effective July 1, 2025):
- Credentialing verification windows were shortened to 120 days (accredited organizations) and 90 days (certified organizations), a 33% decrease in process time.
- Each provider will now be required to be monitored monthly. The license status, OIG exclusions, state medical board measures, and SAM.gov screening should be conducted on a 30-day basis.
- The absence of one monthly check might lead to the practice having expired credentials.
CMS 2026 Enrollment Requirements:
- The Medicare enrollment application fee is 20.26 (750 dollars) paid by PECOS when applying.
- As of June 3, 2024, CMS will require physicians certifying the necessity of hospice services to enroll or disenroll in Medicare.
- PECOS web-based applications take about 15 days to be added directly, as opposed to 30 days when using paper. Paper submissions can still be made through MAC (Medicare Administrative Contractor) but are always slower.
Timelines of Commercial Payer Processing in 2026: A 60-75 day timeline is now being sustained by some insurance companies. Some are operating 120-150 days because of the extra verification loads. UnitedHealthcare provides 45-day processing of primary care providers in short-county physician areas.
How Kansas Medical Billing Supports Provider Enrollment and Credentialing
At Kansas Medical Billing, we manage the full enrollment and credentialing lifecycle for physician practices across Kansas and nationwide, from initial NPI setup through PECOS enrollment, commercial payer applications, and ongoing monthly monitoring.
Our credentialing team handles:
- NPI registration and NPPES profile management
- CAQH ProView setup, completion, and re-attestation
- Medicare PECOS enrollment and revalidation
- KanCare and Medicaid enrollment across applicable states
- Commercial payer applications (BCBS, UHC, Aetna, Cigna, Humana)
- Hospital and facility privileging coordination
- Monthly OIG, SAM.gov, and license status monitoring
- Recredentialing management on 2–3 year cycles
We also connect credentialing directly to your medical billing process, so enrollment gaps don’t silently generate claim denials after a new provider starts seeing patients.
Start Your Credentialing Today
Frequently Asked Questions
1. How long does provider enrollment take with payers in 2026?
Enrollment timelines vary by payer, typically ranging from two to five months depending on verification workload and application completeness.
2. What is enrollment in the medical billing process?
It is the process of joining a payer network so providers can submit claims and receive reimbursement for covered medical services.
3. Do physicians need separate insurance credentialing?
Yes, each insurance company requires its own credentialing and approval process before a provider can legally bill under that payer.
4. What happens if provider credentials expire?
Billing privileges may be suspended, and claims submitted during lapse periods can be denied or require reprocessing after reinstatement.
5. Can providers bill before enrollment approval?
In most cases no, unless retroactive billing rules apply, which depend entirely on the payer’s policies and application acceptance date.
