Demand for home-based therapy (OT, PT, and SLP) has grown, and so has the need for clear credentialing. Practitioners must enroll with Medicare, Medicaid, and private insurers before treating patients at home. This means obtaining an NPI and choosing the correct Medicare enrollment pathway (for example, sole practitioner vs. clinic vs. rehabilitation agency). Home-based outpatient therapists bill under Medicare Part B (not Part A home health), using the same CPT codes as in-office care but marking Place of Service 12 (Home) on claims. Providers do not need a separate “home health” license unless they plan to bill a home health plan of care (Part A). Below are the key enrollment requirements and best practices unique to mobile and in-home providers:
- Medicare Enrollment: All therapists must enroll as Medicare providers. Small practices usually use Form CMS-855I (individual or group) or CMS-855B (clinic) and list their office address. If a multidisciplinary team meets the Medicare definition of a “rehabilitation agency,” it could enroll on the institutional Form CMS-855A. Occupational and physical therapists in private practice (as individuals or groups) enroll on CMS-855I or 855B. Speech-language pathologists enroll similarly on the practitioner form. After enrollment, bill Part B for home visits. For example, CMS clarifies that “outpatient physical therapy, occupational therapy, [and] speech pathology services” (even when delivered at home) are billed under Part B.
- Licensure and NPI: Therapists must hold current state licenses (OT, PT, or SLP) and have an NPI. APTA notes getting an NPI is essential for all Medicare-enrolled providers. Most payers require a provider Tax ID/EIN and licensing verification. Therapists should list their practice address – for mobile providers, this might be a home office or temporary office – and they may need to report each service location (for instance, different nursing homes or retirement communities) to their Medicare Administrative Contractor.
- Billing Differences: Home-based therapy uses standard outpatient billing rules. Medicare Part B pays at the nonfacility outpatient rate when a therapist travels to the patient’s home. No extra “travel fee” is built into Medicare Part B; the reimbursement is the same as if the patient came to the clinic. (Medicare does prohibit billing outpatient therapy under Part B if the patient is simultaneously receiving home health under Part A.) Private insurers vary: out-of-network therapists sometimes may add travel surcharges, but most in-network plans simply cover the therapy visit.
- Medicaid and Managed Care: Providers must enroll in each state Medicaid program (often via their state Medicaid website) to serve beneficiaries. Many states cover home-based OT/PT/SLP under Medicaid waiver or managed care plans. Therapists should also join Medicaid managed-care networks; this typically involves completing a CAQH or plan-specific credentialing application, submitting licenses, malpractice coverage, and background checks. Each state may have its own codes or billing instructions for “in-home therapy services,” so review state Medicaid manuals.
- Commercial Insurers: For private payers, therapists must credential with each insurer’s network. This usually means applying through CAQH ProView or insurer portals, providing licensure, malpractice proof, NPI, W-9, and references. Home visits are generally billed like outpatient clinic visits (with POS 12) if the insurer permits in-home PT/OT/SLP. In practice, some commercial plans may be unfamiliar with mobile therapy; it’s wise to explain “outpatient therapy in the home” during credentialing.
- Key Notes: Verify with each payer any special rules (e.g. whether a patient’s home qualifies as an “approved location”). Check state practice acts, since some states restrict services by setting. Ensure your professional liability and workers’ compensation insurance cover off-site and home visits. In short, the credentialing steps mirror a standard outpatient practice – NPI, Medicare enrollment, licensure, insurance – but remember to specify your service model as in-home/mobile therapy.

Why Choose Prime Credential
Prime Credential specializes in simplifying credentialing for rehab therapists. Our experts help your OT, PT, or SLP practice navigate the complexities of home-based services enrollment. We:
- Handle all paperwork for Medicare, Medicaid, and major insurers so you meet each payer’s rules.
- Keep you updated on in-home therapy billing policies (POS 12 use, travel fee allowances, etc.).
- Ensure timely CAQH completion and revalidation so your network credentials never lapse.
- Offer personalized support – we understand rehab licensure and can advise on state-specific requirements.
With Prime Credential, your focus stays on patient care while we make sure your mobile therapy practice is fully credentialed and compliant. We take the hassle out of “home therapy credentialing” so you can confidently expand in-home services.
Frequently Asked Questions (FAQs)
1. Do I need a home health agency license to provide therapy at patients’ homes?
Not if you bill under outpatient therapy (Medicare Part B). Home health licensure is only required for services under a home health Plan of Care (Part A). Outpatient therapists use their regular state license and bill Part B for visits, even in the patient’s home.
2. Does telehealth count as in-home therapy for credentialing?
No. Telehealth (video/phone therapy) is billed with POS 02 or 10 depending on the service and has its own rules. In-home therapy credentialing applies to in-person visits at the patient’s location. If you offer telehealth, check each insurer’s telehealth policy separately.
3. How do supervision rules apply for assistants doing home visits?
Supervision varies by state, but typically a PTA or COTA in home health therapy can work under general supervision (the therapist need not be physically present) – similar to home health rules. For outpatient (Part B), supervision must follow your state practice act. Always document the therapist’s oversight (direct or general) as required.
4. Can Medicare Advantage patients get home therapy?
Yes, but you usually must be credentialed with each Medicare Advantage plan. Being Medicare-enrolled (Part B) is a start, but MA plans often require joining their network. Contact each MA plan to understand credentialing or use CAQH so plans can find you.
5. What about charging for travel or mileage?
Medicare Part B has no special travel code or extra fee, so therapists generally bill only for the therapy visit. Some private or managed care plans allow providers to charge travel expenses if explicitly out-of-network, but in-network billing typically includes travel within the therapy fee. Always verify with payers before adding any travel surcharge.



