How to Start an Occupational Therapy Private Practice

Opening an occupational therapy private practice is a business problem before it is a clinical one. You already know how to treat patients. What the OT curriculum skips is how to form a legal entity, apply for your identifiers, enroll in Medicare, negotiate with payers, and build a documentation system that survives an audit. This guide covers those steps in the order they need to happen.

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Step 1 — Choose and Form Your Business Entity

Your entity type determines your personal liability exposure, your tax treatment, and in some states your permissible practice name. Get this right before you apply for anything else.

Sole proprietorship: No filing required. Simplest to start, but your personal assets are not legally separated from business liability. Most practitioners outgrow it quickly.

LLC or PLLC: Separates business liabilities from personal assets. Many states require licensed healthcare professionals — including OTs — to use a Professional LLC (PLLC) rather than a standard LLC. In a PLLC, every member delivering OT services must hold a valid license in the state of registration. Check your Secretary of State’s website and state OT board before filing. Northwest Registered Agent’s state-by-state professional entity guide is a useful quick reference.

Professional Corporation (PC): Required in some states instead of or alongside a PLLC. Less common for solo practitioners.

Once you file, open a dedicated business bank account immediately. Commingled funds undermine liability protection and create tax problems.

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Step 2 — Get Your EIN

An Employer Identification Number (EIN) is a free nine-digit federal tax ID issued by the IRS. You need it to open a business bank account, hire contractors or employees, and keep your Social Security Number off paperwork. Even sole proprietors benefit from having one.

Apply online through the IRS at irs.gov/EIN using Form SS-4. Online applications are processed immediately and you receive the number the same day. Paper or fax applications take four to six weeks — do not go that route.

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Step 3 — Confirm Your NBCOT Certification Status

Before you can obtain a state OT license, you must pass the NBCOT certification exam. The National Board for Certification in Occupational Therapy (nbcot.org) administers the Occupational Therapist Registered (OTR) exam, which measures entry-level competence.

Eligibility requirements: You must have graduated from an ACOTE-accredited occupational therapy program. For U.S.-educated candidates, the ACOTE accreditation of your degree-granting institution satisfies this. Internationally educated candidates must complete the Occupational Therapist Eligibility Determination (OTED) process before being permitted to sit for the exam.

Maintaining certification: NBCOT renewal costs $65 and keeps the OTR credential active. Certification is a national credential — it is not the same as your state license. You need both.

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Step 4 — Obtain Your State OT License

All 50 states, the District of Columbia, Puerto Rico, and Guam require occupational therapists to hold an active state license to practice. According to AOTA’s state licensure guidance, the core requirements are consistent — graduate from an accredited OT program, complete supervised fieldwork, and pass the NBCOT exam — but each state licensing board sets its own rules for fees, continuing education requirements, license renewal timelines, and supervision structures.

You must hold an active, unrestricted license in the state where you will see clients before opening your practice. If you plan to serve clients in multiple states (including via telehealth), you may need licensure in each state where your clients are physically located at the time of service.

Practical note: Many states issue a temporary or provisional license while you wait for NBCOT exam results, allowing supervised practice during that window. Check with your state board on whether this applies and what supervision is required.

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Step 5 — Apply for Your NPI

A National Provider Identifier (NPI) is the standard unique identifier for all healthcare providers who transmit electronic health information. You will put this number on every claim, every credentialing application, and every superbill you generate.

Type 1 NPI (Individual): Required for every licensed clinician. An individual may only have one Type 1 NPI, and it follows you for life regardless of where you work.

Type 2 NPI (Organizational): Required if your practice operates under a group or business name that bills separately from you as an individual — for example, if you name your practice “Greenfield OT Services LLC” and bill under that entity.

Apply free through the NPPES online portal. Online applications typically take a few business days to process. You must have your NPI before you can enroll in Medicare or begin credentialing with commercial payers.

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Step 6 — Enroll in Medicare

If you plan to treat Medicare beneficiaries — which is most adult and geriatric OT caseloads — you must actively enroll as a Medicare provider through the Provider Enrollment, Chain, and Ownership System (PECOS). This is separate from having an NPI.

Critical rule for OTs: Occupational therapists cannot opt out of Medicare. Unlike physicians who can opt out and collect private payment, OTs are subject to mandatory claims submission under the Social Security Act — if you provide a Medicare-covered service to a beneficiary, you must bill Medicare. You may collect cash only for non-covered services (wellness, home modification assessments that are not billable, etc.). When coverage is uncertain, issue an Advance Beneficiary Notice (ABN) before providing the service.

Enrollment forms:

• CMS-855I: Individual practitioner enrollment form. OTs in private practice complete Section J, which addresses whether you maintain private office space and whether you render services outside your office. This section does not apply if you are reassigning all benefits to a group or organization you work for.
• CMS-855B: Used by clinics or group practices enrolling as an organization. If you are starting a solo private practice, you will typically file the 855I. If you are also enrolling a group entity, both must be submitted concurrently.

Submit through PECOS (online) or mail to your Medicare Administrative Contractor (MAC). Processing times vary but are often 60–90 days. Do not wait until you have patients to start this process.

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Step 7 — Decide on Cash-Pay vs. Insurance Panels

Your payment model drives your credentialing timeline, documentation requirements, and revenue cycle. Decide early.

Cash-pay (private pay): Clients pay you directly. No payer credentialing required. Because OTs cannot opt out of Medicare, this model works cleanly for non-Medicare clients — pediatric practices serving families who pay out-of-pocket or via HSA/FSA are a natural fit.

Insurance panels: You contract with payers at negotiated rates. Credentialing adds 90–180 days to your launch timeline. For adult rehabilitation caseloads, insurance (including Medicare) is typically the realistic revenue base.

Hybrid: Many practices launch cash-pay to see clients quickly, then add Medicare and commercial panels once credentialing completes.

See Do Therapists Have to Take Insurance? Cash-Pay vs. Insurance Panels for the full trade-off analysis.

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Step 8 — Credential With Commercial Payers (CAQH)

Every major health plan requires credentialing before adding you to their network — a verification of your license, education, training, and malpractice coverage. It is separate from licensure and separate from Medicare enrollment.

CAQH ProView is the central repository most commercial payers use. Register at caqh.org, complete your profile, upload documents (state license, malpractice certificate, NPI, W-9), and authorize each health plan to access your data. The platform is free for providers.

Key operational details:

• Re-attest every 120 days. Missing the re-attestation window makes your profile inaccessible to health plans and stalls any in-flight credentialing applications.
• Timeline: Allow 90–180 days from application submission to panel approval.
• Payer-specific forms: Medicaid, TRICARE, and some Blues plans require supplemental applications beyond CAQH. Confirm with each payer before submitting.

For the step-by-step walkthrough, see Insurance Credentialing for Therapists: A Step-by-Step CAQH Guide.

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Step 9 — Build Your Documentation System

OT private practice documentation serves two functions: clinical record-keeping and billing substantiation. Build the system before you see your first client — if a payer audits a claim, your documentation is the evidence.

Core document set for an OT practice:

Document	OT-Specific Notes
Client Intake Form	Demographics, insurance, emergency contacts, prior therapy history, functional goals
Evaluation Report	Standardized assessment results, occupational profile, analysis of occupational performance
Plan of Care (POC)	Treatment goals with measurable functional outcomes, frequency/duration, diagnosis codes
SOAP / Progress Notes	Subjective, Objective, Assessment, Plan — one per session; must link interventions to POC goals
Re-evaluation Report	Required by Medicare for ongoing skilled care; documents progress and continued medical necessity
Discharge Summary	Functional gains achieved, goal attainment, home program, recommendations for follow-up
Informed Consent	Services, risks, fees, cancellation policy, communication preferences
Notice of Privacy Practices (HIPAA)	Required at or before first appointment

Pediatric vs. adult documentation notes:

Pediatric practices need parent/guardian consent forms (separate from the minor’s intake), school coordination releases, and caregiver home program records. Prior authorization requirements for pediatric OT vary significantly by payer — confirm before the first session.

For adult and geriatric Medicare practices, every session note must establish that the services required a licensed OT’s skills and were medically necessary. Functional outcome measures (FIM, Barthel, PROMIS) support medical necessity and should be captured at evaluation, midpoint, and discharge.

For the complete list of required documents and what each must contain, see The Documents Every Therapy Practice Needs.

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Step 10 — Establish Your HIPAA Compliance Framework

The moment you transmit any patient health information electronically — submitting a claim, storing records digitally, using scheduling software — you are a HIPAA covered entity. The obligations are the same for a one-person OT practice as for a large hospital system.

The full walkthrough is at HIPAA Basics for a New Allied-Health Practice. The minimum before you see your first client:

Notice of Privacy Practices (NPP): Clients must receive this document at or before the first appointment; make a good-faith effort to obtain a signed acknowledgment. HHS provides a model NPP you can adapt.

Business Associate Agreements (BAAs): Every vendor handling PHI — EHR, billing clearinghouse, telehealth platform — is a Business Associate under HHS rules. Get a signed BAA before transmitting PHI through any platform. Most HIPAA-compliant EHRs (WebPT, TheraPlatform, Jane App) include a BAA in their provider agreements.

Security Rule safeguards: At minimum: strong unique passwords, encrypted devices, encrypted email for PHI, and a documented security risk assessment. HHS provides a free Security Risk Assessment Tool sized for small practices.

Breach notification: An impermissible PHI disclosure requires notifying affected patients and HHS within 60 days, and in some cases local media.

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Frequently Asked Questions

Do I need a PLLC or can I use a regular LLC?

It depends on your state. Many states require licensed healthcare professionals — including OTs — to use a PLLC rather than a standard LLC. Some states don’t distinguish between the two and permit either. Check your state’s Secretary of State website and your state OT licensing board before filing. Forming the wrong entity type can create problems when you apply for professional liability insurance or attempt to credential with payers.

How long does Medicare enrollment take?

Medicare enrollment for individual OT practitioners (CMS-855I) is processed through your regional Medicare Administrative Contractor (MAC). Online PECOS submissions are generally processed faster than paper. Realistically, allow 60–90 days. Credentialing with commercial payers typically takes an additional 90–180 days after you have your Medicare number. Plan your launch timeline accordingly.

Can I start seeing clients before my Medicare enrollment is processed?

Yes — for non-Medicare clients, or for non-covered services only with Medicare beneficiaries. You cannot retroactively bill Medicare for services rendered before your enrollment effective date. If a Medicare beneficiary needs a covered OT service before enrollment is complete, they must wait or receive a properly documented ABN for any out-of-pocket payment.

What is the difference between NBCOT certification and state licensure?

They are separate credentials. NBCOT certification (the OTR credential) is a national designation earned by passing the NBCOT exam. State licensure is the legal permit issued by your state board that allows you to practice in that jurisdiction. Passing the NBCOT exam is a prerequisite for most state licenses, but it does not automatically license you anywhere — you must apply to each state board separately.

Do I need malpractice insurance before my first client?

Yes. Most credentialing applications require proof of professional liability insurance before they will process your application. Even for a cash-pay-only practice, a single uncovered claim can be financially devastating. Obtain coverage before you see anyone.