How to Start Billing Insurance as a Therapist: A First-30-Days Checklist
How to start billing insurance as a therapist comes down to seven steps: choose your payers, get credentialed, set up your tools, verify benefits, document, send claims, and work the payments. This checklist walks through them in order for solo and small-group therapists.
How to start billing insurance as a therapist: the 7 steps
- Decide which payers you will bill. Check which plans your clients use and whether you want to be in-network or out-of-network. Read in-network vs out-of-network first.
- Start credentialing. Payers enroll you before you bill in-network. Set up your CAQH profile; see our CAQH profile setup guide. We describe the process, not a timeline, because it varies by payer.
- Set up your tools: a way to send electronic claims through a clearinghouse (see clearinghouse enrollment) and a record system.
- Verify benefits for every new client before the first visit.
- Document each session so the code you choose is supported.
- Send a clean claim. Our post on clean claims in therapy billing shows how, and the CMS-1500 guide explains the form. The National Uniform Claim Committee maintains the 1500 form (checked 10/21/26).
- Post payments, read each explanation of benefits, and work denials. See CARC and RARC codes.
What to set up before your first claim
Knowing how to start billing insurance as a therapist begins with a few setup items. Get these in place before you submit anything.
- Your NPI (National Provider Identifier) and tax ID information.
- A clearinghouse account and payer enrollment for electronic claims.
- A consent and intake process that collects insurance details.
- A way to track claims from submission to payment.
What slows new billers down
Most people who learn how to start billing insurance as a therapist hit the same few delays. Watch for these.
The most common delays are credentialing that is not finished before you see insured clients, benefits that were never checked, and denials no one follows up on. The timely filing deadline also catches new billers, because payers set their own limits.
Your first-month tracking sheet
Start a simple sheet on day one. Track the client, the payer, the date of service, the code, the date you billed, the date you were paid, any denial reason, and the follow-up date. Check it weekly. This one sheet shows you which claims are stuck, which payers are slow, and when a deadline is close, long before a problem becomes a write-off.
Do it yourself or get help?
Once you know how to start billing insurance as a therapist, decide how much of the work you want to keep.
Many therapists start on their own and add help when billing grows. Read what therapist billing services handle and our private practice management guides. MCM South Medical Billing Service, LLC works only in mental and behavioral health and handles verification, claims, secondary claims, EAP claims, denial follow-up, out-of-network claims, and credentialing. Get a Free Quote.
Getting started with insurance billing FAQ
How do I start billing insurance as a therapist?
Choose your payers, get credentialed, set up claim tools, verify benefits, document each session, send clean claims, and work payments and denials.
Do I need to be credentialed first?
To bill in-network, yes: the payer enrolls you first. Out-of-network billing does not require a contract with the payer.
What form do I use for claims?
Most professional claims use the CMS-1500 form or its electronic version, maintained by the National Uniform Claim Committee.
How long does credentialing take?
It varies by payer, so confirm with each one and start before you see insured clients.
Does MCM South help new practices?
MCM South serves solo and medium-size mental and behavioral health practices and handles credentialing, verification, claims, and denial follow-up.
Where MCM South works
MCM South serves practices in our ten currently served states: Georgia, Massachusetts, Connecticut, Texas, Florida, New York, Colorado, Tennessee, North Carolina, and Illinois. Plan rules vary by payer and by state, so check each plan before you bill.
