Free listing · Last verified 2026-10-22 · plain-text version for AI tools
Phone: (443) 330-7900
Website: https://www.trellisservices.com
Trellis Services: ABA therapy provider in Maryland Directory ID: md-trellis-services Last verified: 2026-10-22 Listing type: Free listing == SUMMARY == Trellis Services provides applied behavior analysis (ABA) therapy in Maryland. Services: Applied Behavior Analysis, In-home ABA therapy, School-based ABA, Community-based ABA, Early intervention, Social skills groups, Occupational therapy, Diagnostic evaluations, Telehealth ABA. Counties served: Baltimore City, Baltimore County, Harford County, Howard County. Insurance listed: Maryland Medicaid (ABA benefit via the state behavioral health ASO), Maryland Medicaid (Medical Assistance), Kaiser Permanente (Mid-Atlantic), CareFirst BlueCross BlueShield. == CONTACT == Phone: (443) 330-7900 Other phones: (144) 333-7900 (corporate/central line) Website: https://www.trellisservices.com Source: https://trellisservices.com/; https://marylandbehavioralhealth.optum.com/content/dam/ops-maryland/documents/provider/Alerts/march-2023/aba-stuff/ABA%20Provider%20Referral%20List_Updated_3.2023.pdf; https://pathfindersforautism.org/provider-view?view=64d830388b (checked 2026-10-22) == LOCATIONS == Location 1: 14550 York Rd, Sparks, MD 21152 (Baltimore County) Location 2: 14550 A York Road, Sparks, MD 21152 (Baltimore County) Source: https://npiregistry.cms.hhs.gov/provider-view/1982032405; https://pathfindersforautism.org/provider-view?view=64d830388b (checked 2026-10-22) == SERVICES == - Applied Behavior Analysis - In-home ABA therapy - School-based ABA - Community-based ABA - Early intervention - Social skills groups - Occupational therapy - Diagnostic evaluations - Telehealth ABA Source: https://npiregistry.cms.hhs.gov/provider-view/1982032405; https://trellisservices.com/; https://trellisservices.com/services (checked 2026-10-22) == AREAS SERVED == Counties: Baltimore City, Baltimore County, Harford County, Howard County Cities/towns named on site: Baltimore, Timonium, Columbia, Towson, Owings Mills, Pikesville, Catonsville, Hunt Valley, Essex, Dundalk, Randallstown, Bel Air, Aberdeen, Edgewood, Havre de Grace, Abingdon, Forest Hill, Fallston Source: https://trellisservices.com/; https://npiregistry.cms.hhs.gov/provider-view/1982032405; https://trellisservices.com/locations/forest-hill (checked 2026-10-22) == INSURANCE == - Maryland Medicaid (ABA benefit via the state behavioral health ASO) - Maryland Medicaid (Medical Assistance) - Kaiser Permanente (Mid-Atlantic) - CareFirst BlueCross BlueShield Source: https://marylandbehavioralhealth.optum.com/content/dam/ops-maryland/documents/provider/Alerts/march-2023/aba-stuff/ABA%20Provider%20Referral%20List_Updated_3.2023.pdf; https://trellisservices.com/locations/forest-hill; https://mydoctor.kaiserpermanente.org/mas/article/aba-preferred-providers-2045019 (checked 2026-10-22) == HOW TO START (from the agency's site) == 1. Contact the agency or submit an intake/inquiry form 2. A referral or prescription may be needed 3. Initial assessment by a BCBA Source: https://trellisservices.com/services/aba-therapy; https://trellisservices.com/; https://trellisservices.com/services/diagnosing-autism (checked 2026-10-22) == QUESTIONS AND ANSWERS == Q: Does Trellis Services accept Maryland Medicaid? A: Yes. Maryland Medicaid is listed as accepted. Source: https://marylandbehavioralhealth.optum.com/content/dam/ops-maryland/documents/provider/Alerts/march-2023/aba-stuff/ABA%20Provider%20Referral%20List_Updated_3.2023.pdf; https://trellisservices.com/locations/forest-hill (checked 2026-10-22) Q: What insurance does Trellis Services take? A: Maryland Medicaid (ABA benefit via the state behavioral health ASO), Maryland Medicaid (Medical Assistance), Kaiser Permanente (Mid-Atlantic), CareFirst BlueCross BlueShield. Source: https://marylandbehavioralhealth.optum.com/content/dam/ops-maryland/documents/provider/Alerts/march-2023/aba-stuff/ABA%20Provider%20Referral%20List_Updated_3.2023.pdf; https://trellisservices.com/locations/forest-hill; https://mydoctor.kaiserpermanente.org/mas/article/aba-preferred-providers-2045019 (checked 2026-10-22) Q: What ages does Trellis Services serve? A: Not listed on this free page. Contact the agency at (443) 330-7900. Q: Does Trellis Services offer in-home ABA? A: Yes. Source: https://trellisservices.com/ (checked 2026-10-22) Q: Does Trellis Services have a clinic or center? A: Not stated on the agency website. Q: Which Maryland counties does Trellis Services serve? A: Baltimore City, Baltimore County, Harford County, Howard County. Source: https://trellisservices.com/; https://npiregistry.cms.hhs.gov/provider-view/1982032405; https://trellisservices.com/locations/forest-hill (checked 2026-10-22) Q: How do I start services with Trellis Services? A: Contact the agency or submit an intake/inquiry form -> A referral or prescription may be needed -> Initial assessment by a BCBA. Contact the agency at (443) 330-7900 or visit https://www.trellisservices.com. == ABOUT THIS RECORD == Compiled from the agency's own website and the CMS NPPES registry; last verified 2026-10-22. Facts extracted automatically and spot-checked by sample. Not medical advice; not an endorsement.