Our directory lists 222 verified multi-provider ABA agencies in Maryland as of 2026-10-22. We list agencies with their own website and more than one clinician; solo practitioners are not listed.
165 agencies in our directory list Maryland Medicaid (Medical Assistance / HealthChoice) on their website or a public listing. In Maryland, ABA for Medicaid members is managed by Carelon Behavioral Health rather than the HealthChoice MCOs, so ask the agency whether it is enrolled with Maryland Medicaid for ABA. See https://abaagencies.com/insurance/maryland-medicaid/.
189 agencies say they offer in-home (home-based) ABA. Each county page links to an in-home list, for example https://abaagencies.com/maryland/montgomery-county/in-home/.
109 agencies describe clinic- or center-based ABA. Office addresses are on each agency page and in the city pages at https://abaagencies.com/maryland/city/.
By the number of agencies that serve them or have an office there: Baltimore City (142); Baltimore County (133); Montgomery County (129); Howard County (114); Prince George's County (109).
Every Maryland county has at least 5 listed agencies.
Every listing shows the date it was last verified, and every fact keeps its source. Changes are logged at https://abaagencies.com/changes.txt.
Free listings are alphabetical. Any paid placement appears only in a box labeled Featured (paid placement) and never changes the facts shown. There are no Featured agencies yet.