Credentialing is how a payer verifies you’re qualified to join its network. Contracting is the legal agreement that sets your reimbursement rates and terms. Enrollment is registering with a government program, Medicare or Medicaid, so you can bill it directly. If you’ve started researching how to accept insurance as a therapist, you’ve probably seen all three used as if they mean the same thing. They don’t, and mixing them up is one of the most common reasons new clinicians run into billing delays, unpaid sessions, or a missing directory listing. Here’s what each one involves, how they connect, and what to expect and when.

Why any of this matters

According to SAMHSA’s 2024 National Survey on Drug Use and Health, only about half of adults with any mental illness (52%) received mental health treatment that year. Access is the central problem, and a shortage of in-network therapists is part of it. In our Future of Therapy report, 83% of therapists surveyed named inadequate insurance coverage as an obstacle to care, the most cited obstacle in the survey.

For a clinician starting out, accepting insurance expands who you’re able to serve. But before you can bill a single payer, you have to work through a multi-step administrative process, and each step has its own paperwork, timeline, and system. Knowing which one you’re in tells you what to do next.

Credentialing: How payers verify you’re qualified

Credentialing is the process a payer uses to confirm you’re qualified before it lists you as an in-network therapist. The payer checks that you hold a valid license, carry malpractice insurance, have the education and work history you say you do, and meet its participation requirements. Getting credentialed with a payer is also called getting on its panel, or paneling.

You go through credentialing separately with each payer. Each one runs its own review and makes its own decision. Most major commercial payers do pull your information from one place, though: the CAQH Provider Data Portal, a free platform where you enter your professional information once and authorize each payer to access it. You may know it as CAQH ProView. The portal has since been renamed, and in 2026 CAQH itself became DataSpring, powered by CAQH. Our post on what the CAQH to DataSpring change means for therapists covers what did and didn’t change.

Two things to know about CAQH. It doesn’t approve you anywhere on its own. It just means your information is in one place when each payer goes looking for it. And it’s close to universal: more than 2.5 million clinicians keep their information there, and the health plans that use it cover 9 out of 10 people with commercial insurance.

What you need to get credentialed

• A state license in good standing
• Your National Provider Identifier (NPI), a unique 10-digit number issued free through the federal NPPES registry
• A completed and attested CAQH Provider Data Portal profile
• Proof of malpractice insurance
• Work history and education, with any gaps explained
• A W-9 or your tax ID number

Once you apply, the payer’s credentialing department verifies each item, often by contacting your licensing board and other primary sources directly. Your file then goes to a credentialing committee for review and approval. Our step-by-step guide to therapist credentialing walks through each stage and how to keep it from stalling.

Credentialing typically takes 90 to 150 days from the time you submit your application, and it can stretch to six months depending on the payer and how complete your documentation is.

Two ways to get the work done

For a solo or small group practice, managing credentialing yourself is doable, especially once your documents are gathered and your CAQH profile is set up. You stay close to your own data, which helps when re-attestation deadlines come around, and credentials held in your own name stay with you if you leave a group practice.

If you’re juggling licensure, clients, and a practice launch at the same time, the applications and the months of follow-up are where help matters most. If you’re new to TheraNest by Ensora Health and sign up for an Advanced or Premier plan, credentialing is included at no extra cost for up to three payers per clinician. You choose the payers. Ensora’s enrollment specialists prepare and submit the applications, track their progress, and follow up with each payer until there’s a decision. You still own your CAQH profile and sign your own contracts. For a group practice adding clinicians, the same three payers per clinician applies to each new hire.

Important: Don’t see clients expecting insurance reimbursement until your credentialing is approved and your effective date is confirmed. Sessions before your effective date generally won’t be covered.

Contracting: The agreement that sets your terms

Once credentialing is approved, contracting begins. The payer sends you a participation contract, a legal agreement that governs your relationship with the insurance company. It covers:

• Your reimbursement rate (how much the payer pays per session type or CPT code)
• Timely filing limits (how long you have to submit a claim after a session)
• Billing and documentation requirements
• HIPAA compliance obligations
• The payer’s right to audit your records
• How disputes and denied claims are handled

Contracting isn’t automatic. You have to review the contract, agree to the terms, and sign it. Read it in full first. Some therapists in high-demand specialties or areas have negotiated a higher reimbursement rate than the first offer. Many payers will say no, but it’s worth asking, especially if you offer something the network is short on, like a specialty, a language, or evening availability.

Keep a signed copy. You’ll want it if a billing dispute comes up later.

Contracting typically begins 30 to 60 days after credentialing approval and wraps up quickly once you return the signed contract. Your contract lists your effective date, the first date your sessions are covered in network.

Enrollment: Registration with Medicare and Medicaid

Enrollment is the process of registering with a government-run health program, primarily Medicare or Medicaid, so you can bill it directly. It’s related to credentialing, but it’s a separate administrative track with its own systems and timelines.

Medicare enrollment

Medicare is a federal program, so enrollment runs through one federal system: PECOS, the Provider Enrollment, Chain, and Ownership System, managed by the Centers for Medicare & Medicaid Services (CMS). You apply, upload supporting documents, and manage your participation there. Since January 1, 2024, marriage and family therapists and mental health counselors can enroll alongside psychologists and clinical social workers.

You must be enrolled to receive Medicare reimbursement. If you don’t enroll and you want to see Medicare clients privately, you have to formally opt out by filing an opt-out affidavit with your Medicare Administrative Contractor, and each Medicare client signs a private contract with you. Medicare charges no application fee for individual clinicians; the fee applies to institutions such as hospitals and clinics. Processing often takes 60 to 90 days or more.

One more distinction: Medicare Advantage plans are run by private insurers, so they credential and contract separately. Enrolling in Original Medicare through PECOS doesn’t put you in a Medicare Advantage network.

Medicaid enrollment 

Medicaid is state-administered, so the process varies by state. Your state Medicaid office has the enrollment requirements, forms, and timelines for your location, and you generally must be enrolled before Medicaid will reimburse you. In many states, Medicaid benefits are delivered through managed care plans that have their own credentialing steps on top of state enrollment, so ask your state office which ones apply to you.

How the three compare

A rough timeline: What happens and when

These steps don’t always happen in a perfectly linear order, and some overlap is normal. But this is a reasonable framework for a clinician starting from scratch.

 
Common mistakes and misconceptions

New clinicians run into the same friction points. Knowing them in advance can save you months.

Seeing clients before your effective date

Credentialing approval doesn’t mean you can bill yet. Sessions before your contract’s effective date generally won’t be reimbursed, so treat clients as private pay until it’s confirmed. Our guide to out-of-network billing for therapists covers how to handle that conversation.

A missed CAQH re-attestation

CAQH requires you to re-attest your profile information every 120 days, or 180 days in Illinois. If you miss the deadline, payers lose access to your profile, which can stall claims and trigger recredentialing delays. CAQH sends reminder emails, but set your own calendar reminder too.

Enrollment mistaken for credentialing

Credentialing is the verification process. Enrollment is specific to government programs. You’ll do both if you want to accept Medicare or Medicaid, and you track them in different systems on different timelines.

Signing a contract without reading it

Reimbursement rates, filing deadlines, and appeal processes vary significantly by payer, and a signed contract is legally binding. Read it fully before returning it, and ask the payer’s contracting contact about anything unclear.

Not following up

Applications stall, emails go unanswered, and documents get lost. Most payers have a policy on how often you can check on your application status. Follow their guidelines, but do follow up. Silence isn’t a sign that everything is on track.

Thinking credentialing is a one-time event

Most payers recredential every two to three years, and the National Committee for Quality Assurance (NCQA), whose standards most health plans follow, requires it at least every 36 months. You’ll also need to update your CAQH profile any time your license, malpractice coverage, address, or practice information changes.

How credentialing and billing work with TheraNest

Once you’re in network, the work shifts to billing: submitting claims, tracking reimbursements, working denials, and keeping your credentials current, all while seeing clients.

TheraNest is built for that stretch. If you’re new to TheraNest and sign up for an Advanced or Premier plan, Ensora’s enrollment specialists handle the credentialing applications and follow-up for up to three payers per clinician at no extra cost. Once you’re approved, TheraNest’s billing tools create and submit claims and track payments in the same place you schedule and write notes. If insurance billing is new to you, our insurance billing basics guide covers what happens after credentialing.

The same credentialing offer applies to Fusion Advanced and Premier plans for SLP, PT, and OT clinicians.

See how credentialing works with TheraNest.

Where to start this week

Get your NPI if you don’t have one, set up and attest your CAQH Provider Data Portal profile, and write down the payers your clients ask about most. If you’re not on TheraNest yet, see how credentialing works with TheraNest, start a free trial, or request a demo. For more on building and running your practice, follow us on LinkedIn and subscribe to our Practice Success newsletter.

Frequently asked questions

If I’m credentialed, am I in network?

No. Credentialing means the payer has approved your qualifications. You’re in network once you’ve signed the contract and reached your effective date. Sessions in between generally aren’t paid as in network.

Do I need a CAQH profile to enroll in Medicare?

No. Medicare enrollment runs through PECOS, not CAQH. You’ll still want a CAQH profile for commercial payers, since most of them pull your information from it.

Can I negotiate my reimbursement rate?

You can ask, and some therapists in high-demand specialties or areas have received a higher rate than the first offer. Many payers won’t change it for a new clinician, so decide whether the offered rate works for your practice before you sign.

How long does the whole process take?

From application to your first in-network claim, plan on four to seven months: 90 to 150 days for credentialing, 30 to 60 days for contracting, and a few weeks to appear in the directory. Setting up your CAQH profile and gathering your documents before you apply is the most reliable way to shorten it.

If you’ve started researching how to accept insurance as a therapist, you’ve probably run into these three terms already and probably seen them used almost interchangeably. They’re not the same thing. Confusing them is one of the most common reasons new clinicians experience billing delays, unpaid sessions, or gaps in getting listed in payer directories.

This post breaks down each one clearly, shows you how they connect, and walks you through what to expect and when.

Why any of this matters

According to SAMHSA’s 2024 National Survey on Drug Use and Health, only about half of adults with any mental illness received treatment in 2024. Access is the central problem, and limited availability of in-network therapists is a significant part of that. 83% of the therapists surveyed in our Future of Therapy report believe inadequate insurance coverage is a major obstacle to accessing care.

For clinicians starting out, accepting insurance can expand who you’re able to serve. But before you can bill a single payer, you have to navigate a multi-step administrative process. Understanding the terminology is the first step.

Credentialing: Proving you’re qualified

Credentialing – sometimes called ‘paneling’ – is the process payers use to verify that you’re qualified to provide care before listing you as an in-network therapist. It’s how an insurance company confirms that you hold a valid license, carry malpractice insurance, have the education and experience you say you do, and meet their specific participation requirements.

You go through credentialing separately with each payer, and each one runs its own review and makes its own approval decision. That said, most major commercial payers use a centralized platform called the CAQH Provider Data Portal, which cuts down on repetitive paperwork. You enter your professional information once and authorize each payer to access it, instead of filling out the same forms from scratch every time. CAQH doesn’t get you approved anywhere on its own. It just means your information is in one place when each payer goes looking for it.

Over 2.5 million providers actively use the platform, and it’s required by nearly all major payers, including Blue Cross Blue Shield, Aetna, and UnitedHealthcare.

To complete credentialing, you’ll typically need:

• A valid state license in good standing

• Your NPI (National Provider Identifier) – a unique 10-digit number issued free through the federal NPPES registry

• A completed CAQH ProView profile

• Malpractice insurance documentation

• Work history and education verification

• A W-9 or Tax ID number

Once you apply, the payer’s credentialing department verifies each item, often by contacting licensing boards and other primary sources directly. Your file then goes to a credentialing committee for review and approval.

Credentialing typically takes 90 to 150 days from the time you submit your application, and it can stretch to 4-6 months depending on the payer and how complete your documentation is.

Credentialing has a reputation for being complicated, but for a solo or small-group practice, managing it yourself is entirely doable, especially once you’ve gathered your documents and set up your CAQH profile. Doing it yourself keeps costs down and means you stay close to your own data, which matters for keeping re-attestation deadlines on track later. And if you leave a group practice, you’re still credentialed and can start working sooner.

That said, if you’re juggling licensure, clients, and a practice launch at the same time, a credentialing service can take the follow-up work off your plate. For solo clinicians and small practices, general credentialing services that specialize in mental health providers are worth looking into.

If you’re building a larger group practice or onboarding multiple clinicians, a platform like Exydoc, which integrates credentialing and provider data management with your broader practice operations, is better suited to that scale.

Important: Don’t see clients expecting insurance reimbursement until your credentialing is officially approved and your effective date is confirmed. Sessions provided before your effective date generally won’t be covered.

Contracting: Agreeing to the terms

Once credentialing is approved, contracting begins. This is when the payer sends you a formal participation contract, which is a legal agreement that governs your relationship with the insurance company. 

The contract covers: 

• Your reimbursement rate (how much the payer will pay per session type or CPT code) 
• Timely filing limits (the window you have to submit claims after a session) 
• Billing and documentation requirements 
• HIPAA compliance obligations 
• The payer’s right to audit your records 
• How disputes or denied claims are handled 

Contracting is not automatic: you have to review the contract, agree to the terms, and sign it. Before you do, read it carefully. Some therapists in high-demand specialties or geographic areas have successfully negotiated higher reimbursement rates than the initial offer. It’s always worth asking, even if the answer is no.

Keep a signed copy for your records. You’ll want it if billing disputes come up later. 

Contracting typically begins 30 to 60 days after credentialing approval and can be completed relatively quickly once you return a signed contract.

Enrollment: Registering with government programs

Enrollment is a specific term for the process of registering with a government-run health program – primarily Medicare or Medicaid – to bill them directly for services. It’s related to credentialing, but it’s a separate administrative track.

Medicare enrollment

Medicare is a federal program, so enrollment is handled through a single federal system: PECOS – the Provider Enrollment, Chain, and Ownership System, managed by the Centers for Medicare and Medicaid Services (CMS). PECOS is the online platform where you submit your enrollment application, upload supporting documents, and manage your Medicare participation over time.

Enrolling in Medicare is not optional if you want to bill it because you must be enrolled to receive Medicare reimbursement for services. If you choose not to enroll, you must formally opt out by submitting a Medicare Opt Out Affidavit. Each Medicare client would then need to sign a private pay agreement with you.

Medicare charges no application fee for most mental health clinicians (including psychologists, clinical social workers, and licensed counselors). Medicare processing often takes 60-90+ days.

Medicaid enrollment 

Medicaid is state-administered, which means the process varies by state. Contact your state Medicaid office directly for enrollment requirements, application forms, and timelines specific to your location. Generally, you must be enrolled with Medicaid before you can receive reimbursement from it.

Medicaid enrollment timelines vary by state.

At a glance: How the three compare

A rough timeline: What happens and when

These steps don’t always happen in a perfectly linear order, and some overlap is to be expected. But this is a reasonable framework for a clinician starting from scratch: 

 
Common mistakes and misconceptions 

New clinicians run into the same friction points. Knowing them in advance can save you months of delays.

Seeing clients before your effective date

Credentialing approval doesn’t automatically mean you can bill. Your payer contract has an effective date, which is the date from which your sessions are covered. Sessions before that date generally won’t be reimbursed. If you want to see a client before your credentialing is complete, treat them as private pay until your status is confirmed.

Missing CAQH re-attestation

CAQH requires you to re-attest your profile information every 120 days (180 days in Illinois). If you miss the deadline, payers lose access to your profile, which can stall claims processing and trigger re-credentialing delays. CAQH sends reminder emails, but it’s worth setting your own calendar reminders too.

Assuming enrollment and credentialing are the same thing

They’re related but separate. Credentialing is the verification process. Enrollment is specific to government programs. You’ll do both if you want to accept Medicare or Medicaid, but you track them in different systems and on different timelines.

Signing a contract without reading it

Reimbursement rates, filing deadlines, and appeal processes vary significantly by payer. A contract you sign is legally binding. Read it fully before returning it, and ask questions if anything is unclear.

Not following up

Applications get stalled, emails go unanswered, and documents get lost. Most payers have a policy on how frequently you can check in on your application status. Follow their guidelines, but do follow up. Silence is not a sign that everything is on track.

Thinking credentialing is a one-time event

It’s not. Most payers require recredentialing every two to three years. You’ll also need to update your CAQH profile any time your license, malpractice coverage, address, or practice information changes.

Managing the administrative side of your practice

Getting credentialed and in-network is the start – not the end – of your relationship with insurance. Once you’re billing, you’ll be submitting claims, tracking reimbursements, managing denials, and keeping your credentials current, all while seeing clients.

TheraNest is built for exactly this. Its billing tools are designed for solo and small-group mental health practices, with automated tools for insurance billing, claim submission, and payment tracking in one place so you’re spending less time chasing reimbursements and more time doing the work you went to school for.

Follow us on LinkedIn for more help on building and running your mental health practice. You should also subscribe to our Practice Success newsletter.