The federal baseline
Many of the barriers to methadone access are set by states rather than federal law. Two federal rules matter here:
- SAMHSA's 2024 OTP rule (42 CFR Part 8) lets a certified OTP establish medication units that dispense medications for opioid use disorder, after notifying SAMHSA. Medication units can be mobile or brick-and-mortar, and any service the OTP provides can be offered there, subject to federal, state and local law, privacy and adequate space (42 CFR 8.11(h)). A medication unit is part of the OTP but geographically separate, and it may be run by the OTP's practitioners, contractors, or community pharmacists (42 CFR 8.2). Any medication unit, fixed or mobile, must also meet DEA's requirements before it opens.
- DEA's 2021 rule on mobile narcotic treatment programs lets an OTP operate a mobile component under its existing DEA registration, with prior approval from the local DEA office, in the same state. The vehicle must return to the registered location each day, and stock may come only from that location. Dispensing records for the mobile component are kept at the registered OTP site and must be reportable separately for the mobile component.
Within that federal room, states decide where OTPs can open, how many units they can run and what those units may do. In 2026, several states loosened those limits.
States that removed need requirements for new OTPs
Louisiana. Act 232 of the 2026 Regular Session (SB 26), signed and effective May 15, 2026, repealed the state's facility need review for new or additional OTPs. The Louisiana Department of Health can no longer refuse to license an OTP because it hasn't found a geographic need. The department's licensing rules may still reference need review until they are amended.
New Mexico. The Health Care Authority repealed and replaced its OTP rule, 8.321.10 NMAC, effective May 5, 2026. The new rule:
- drops the requirement that a new OTP submit a needs assessment for the area it will serve;
- adds a section on medication units, brick-and-mortar or mobile, which may provide dosing, drug testing, take-home doses, intake and assessment, and start methadone or buprenorphine, with counseling in person or by telehealth (units still need state, DEA and Board of Pharmacy approval);
- sets take-home limits that mirror the federal schedule in 42 CFR 8.12(i); and
- states that access to medication can't depend on whether a patient engages in counseling.
New Mexico still requires OTPs to hold a state Board of Pharmacy license. The agency also still considers community impact, and can deny a license based on a sponsor's documented history of serious negative neighborhood impact.
Other state actions on mobile and medication units
Washington. On May 28, 2026, the Pharmacy Quality Assurance Commission voted to adopt changes to WAC 246-945-060 and 246-945-250 so that an OTP's registration covers its mobile units. Once the change takes effect, each unit will no longer need its own registration and annual renewal fee, which is replaced by a one-time inspection fee. Check the commission's site for the effective date. Separately, the Department of Health has opened rulemaking to revise its requirements for fixed-site medication units.
Delaware. The Division of Substance Abuse and Mental Health's policy on medication units and mobile OTP units (DSAMH038, first issued in 2022 and most recently revised in 2026) allows medication units staffed by licensed practitioners or community pharmacists, and mobile units that can provide dosing, testing, take-homes, intake, starts on methadone or buprenorphine, and counseling. Under Delaware's policy, units need approval from DEA, SAMHSA, the State Opioid Treatment Authority and the Division.
A state that changed admissions but not mobile limits
Michigan. New substance use disorder program rules (R 325.1301 to R 325.1399) took effect June 3, 2026. They remove the requirement that patients have at least one year of documented opioid use disorder before starting methadone, and end separate state licensure for outpatient counseling programs. The rules still cap mobile units at three per parent methadone program and still require them to return each night (R 325.1304(3)). A bill to lift those mobile unit limits, Senate Bill 398, passed the Michigan Senate in 2025 but has not been enacted.
What to watch next
- Indiana adopted amendments to its OTP rules (LSA Document 25-797, amending 440 IAC 10), which the state's rule docket listed as taking effect October 25, 2026. Review the final text for changes that affect your program.
- Wisconsin's current OTP rule (DHS 75.59) still requires documentation of need for a new OTP. Watch for any proposal to align it with the federal standard.
- New Jersey adopted new outpatient facility licensing rules in 2026 (N.J.A.C. 8:43K), and a pending bill (A626) would write medication unit services into statute and remove pharmacist staffing requirements for them.
This summary reflects what we could confirm in primary sources as of October 29, 2026. Several items are still moving, so confirm current status with your State Opioid Treatment Authority. If your state isn't listed, check there too; many states are revising OTP rules after the 2024 federal changes.
What this means for your policies
If you're adding a mobile or medication unit, your policy set needs to cover the unit as its own operation:
- Approvals and notices: SAMHSA notification, DEA requirements for any medication unit (fixed or mobile), and every state approval your state requires.
- Security and storage: vehicle or site security, overnight return or storage, and how stock moves from the registered location.
- Dispensing records: how the unit's dispensing is recorded and kept at the registered OTP site, reported separately for the unit, and reconciled.
- Services offered: exactly which services the unit provides, including intake, induction, take-homes, testing and counseling, and the privacy and space standards for each.
- Staffing and oversight: who staffs the unit, supervision by the parent OTP, and emergency procedures.
- Diversion control and emergency plans: updated to include each unit.
If your state removed a need requirement, the remaining steps are state licensure, SAMHSA certification, accreditation, DEA registration and any local permits. A complete, state-specific policy manual is commonly required along the way.
If your state aligned admission, take-home or counseling rules with federal standards, review your admission criteria, take-home eligibility policy and counseling policy so they match. A manual written under the old rules may still require things the state no longer does, and surveyors review against what your policies say.
Sources
- SAMHSA, "Medications for the Treatment of Opioid Use Disorder," 89 FR 7528, February 2, 2024; 42 CFR 8.2 and 8.11(h). eCFR
- DEA, "Registration Requirements for Narcotic Treatment Programs With Mobile Components," 86 FR 33861, June 28, 2021. govinfo.gov
- Louisiana Legislature, SB 26 (Act 232), 2026 Regular Session. legis.la.gov
- New Mexico Health Care Authority, 8.321.10 NMAC, Opioid Treatment Programs (adopted 2026). New Mexico Register
- Michigan LARA, Substance Use Disorder Service Program rules, 2025-31 LR, effective June 3, 2026. michigan.gov
- Michigan Legislature, Senate Bill 398 of 2025. legislature.mi.gov
- Washington Pharmacy Quality Assurance Commission, WSR 26-09-118 (proposed rule). wa.gov and May 28, 2026 meeting minutes. doh.wa.gov
- Delaware DSAMH Policy DSAMH038, "Medication Unit and Mobile OTP Unit," revised 2026. delaware.gov
- Indiana FSSA, OTP rule docket, LSA Document 25-797. in.gov
- Wisconsin Administrative Code DHS 75.59. Cornell LII
- New Jersey Department of Health, N.J.A.C. 8:43K adoption notice. nj.gov and Assembly Bill A626 (2026). njleg.gov
Checked against the primary sources listed above as of October 29, 2026. Rules and dates can change; confirm current requirements before acting. This article is general information, not legal advice.