IOP credentialing in Texas: how a program gets in network as a facility

Payer by payer: what each requires and how long

Every timeline below starts when the payer has a complete application, and for a substance use program none of them starts before the HHSC license is issued, because plans ask for the license with the application. Ranges marked "our data" are the typical days in the payer directory our credentialing work runs on; the others are set by the source linked.

The same ranges for every kind of plan, as our client portal tracks them, are on the how long credentialing takes guide. Plan-specific steps are in our guides to BCBSTX, Aetna, Cigna, UnitedHealthcare, Superior and TRICARE.

Before any plan: the facility file

Most stalls are a missing page or a name that doesn't match. Build one folder before the license arrives, so every application can go out the week it does:

• The HHSC license. A Texas SUD program must hold a chemical dependency treatment facility license before it treats anyone (Health and Safety Code chapter 464, 26 TAC 564). You have 6 months from filing to show compliance, and you can't treat anyone until HHSC approves you in writing (26 TAC 564.403). The levels of care and address on it must match every application. Mental-health-only programs fall under different rules; see licensing a mental health IOP or PHP.
• An organization (Type 2) NPI with a clinic or facility taxonomy, such as 261QR0405X (substance use disorder rehabilitation clinic) or 261QM0801X (mental health clinic). Confirm the code each plan and Texas Medicaid expect before you apply, and ask whether they want a separate Type 2 per licensed location. Our NPI Type 1 vs Type 2 guide explains both.
• One legal name everywhere: the Secretary of State filing, IRS EIN letter, W-9, NPPES record, license and insurance certificates, letter for letter.
• Ownership and management: everyone with 5% or more ownership, the officers and managing employees, each checked against the federal and Texas exclusion lists.
• The building and insurance: certificate of occupancy, fire inspection, and the organization's general and professional liability certificates.
• The program: levels of care, weekly hours at each, ages served, ASAM-based admission and discharge criteria, staff roster with licenses, and key policies (quality, client rights, records and 42 CFR Part 2, emergencies). A CLIA certificate of waiver if you do instant drug tests.

The full list is our credentialing documents checklist, and the license itself is walked through in how to get a Texas CDTF license.

Which plans wait for accreditation

Texas doesn't usually require accreditation for an IOP or PHP license, but some payers won't contract without it, and accreditors survey only programs that are already serving clients:

• The Joint Commission can survey once you meet your state license requirements and have served at least three people, with two active on survey day.
• CARF expects about six months of services delivered under its standards before the site survey.
• For a program already serving clients, plan on about six to nine months from the decision to the decision letter (accreditation cost and timeline).

So most Texas programs open with Texas Medicaid plans, the commercial plans that don't require accreditation, self-pay and single case agreements, then send the accreditation letter to TRICARE and the waiting plans the day it arrives. Ask each plan on your first call whether it requires accreditation for your levels of care, and write down the answer with the rep's name and date.

Texas Medicaid: TMHP, then each plan

1. Enroll the facility with TMHP in PEMS after the license is issued. Enrollment lets you bill fee-for-service Medicaid; it doesn't put you in any managed care plan's network.
2. Pick the plans that serve your counties (Texas Medicaid plans by area) and ask each whether it offers adult PHP and IOP as in-lieu-of services there. Superior, Aetna Better Health and Texas Children's Health Plan have published that they do; members under 21 may get PHP and IOP through Texas Health Steps.
3. File each facility application and answer the CVO's and plan's requests fast; the 90 days only run on a complete file.
4. Load the plan's rules before the first admission: prior authorization (Superior asks at least five business days before services start) and the HCPCS code on every PHP and IOP claim, required by Superior since July 1, 2025 (H0015 for SUD IOP, S9480 for mental health IOP, S0201 or H0035 for PHP).

Details, plan by plan, are in Texas Medicaid for IOP and PHP programs and Texas Medicaid enrollment.

Your clinicians: the second layer

The facility contract pays the program's per diem, but ask each plan whether it also credentials the clinicians who work there. Where it does, each clinician needs a Type 1 NPI and usually an attested CAQH profile, and is linked to the program's contract. An LCDC generally bills Medicaid through the licensed program, not on their own, and HHSC requires that counseling in a licensed program be provided by or under a qualified credentialed counselor (see IOP staffing requirements in Texas). Keep a roster and update PEMS and every plan when someone joins or leaves.

The order, start to finish

1. Entity, EIN and the Type 2 NPI, in one exact legal name.
2. The HHSC license application, filed only when the site, policies and staff files are close to ready.
3. The facility file built while the license is pending.
4. License issued: TMHP enrollment and every non-accreditation plan's facility application in the same week.
5. Site visits, requests for more information, and follow-up every two weeks.
6. Contracts read before signing: the rate for each code, timely filing (95 days for fully insured Texas plans), termination and the effective date.
7. First admissions; the accreditation survey once you're eligible; then TRICARE and the accreditation-gated plans.
8. Each effective date and provider ID in writing, loaded in your EHR, before you bill that plan in network.

On the Texas roadmap we run for a substance use program, the facility contracts run about 90 days, starting around the HHSC inspection and first admission; the full roadmap is on the IOP / PHP Program Launch page. What to check in each contract is in insurance contracts for an IOP or PHP, and where credentialing fits in the whole launch is in how to start an IOP in Texas. Cima EHR's Program plan tracks each plan's authorizations against attendance once you're billing.

What it costs

Your direct costs are the HHSC license fee ($1,200 base plus $125 per additional site under 26 TAC 564.408) and, for Texas Medicaid, the federal application fee if it applies. If you'd like it done for you, a program's facility contract with one plan is $950, and Texas Medicaid enrollment with the first managed care plan is $500 per clinician; clinicians a plan credentials individually are $275 per plan each.

Questions

Sources

Checked October 27, 2026, against the sources our linked guides cite.

1. Texas Health and Safety Code chapter 464; 26 TAC 564.403 (application and the 6-month rule); 26 TAC 564.408 (fees).
2. TMHP, "Substance Use Disorder Benefits to Change for Texas Medicaid January 1, 2019" (SUD treatment only in licensed CDTFs); HHSC Medicaid provider enrollment (PEMS, revalidation).
3. CMS, Medicare enrollment for providers (the 2026 application fee).
4. Texas Association of Health Plans, Medicaid credentialing (90 days from a complete application) and Credentialing 101 (the Texas CVO).
5. Texas HHSC, Uniform Managed Care Manual 16.3 (in-lieu-of services); Superior HealthPlan, PHP and IOP billing code update and PHP and IOP services notice.
6. TRICARE Policy Manual, chapter 11, section 2.5 and the IOP participation agreement; VA, Community Care Network.
7. CMS, CY 2024 hospital outpatient final rule fact sheet (Medicare IOP providers).
8. The Joint Commission, first-survey milestones; CARF, steps to accreditation.
9. CMS, NPPES (NPIs).
10. Texas Insurance Code §1301.102 and §843.337 (95-day filing for insurers and HMOs).

General information. Cima Consulting isn't a law firm or an accounting firm. HHSC, TMHP and each health plan make their own decisions; we don't guarantee approvals, rates or dates.