Allyson Marnell, BCBA

Primary specialty

Behavior AnalystTaxonomy code 103K00000X

License

1-22-58600 Issued in DE

Practice address

1000 N. West Street
Suite 1200
Wilmington, DE 19801-1058

Phone

(855) 832-6727

Fax

(772) 675-9100

NPI assigned

Sep 25, 2018

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Your Way ABA LLC

  • Behavior Analyst
  • Wilmington, DE
  • NPI 1457095747
  NPD
• Easter Seals Delaware & Marylands Eastern Shore, Inc

  • Intellectual & Developmental Disabilities Psychologist
  • New Castle, DE
  • NPI 1437156635

  Behavior Analyst

  NPD (past)
• Exceptional Kidz Rehabilitation

  • Speech-Language Pathologist
  • Pemberton, NJ
  • NPI 1467738492

  Mental Health

  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1537833600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763596800000",
    "number": "1699250712",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1000 N. WEST STREET",
            "address_2": "SUITE 1200",
            "city": "WILMINGTON",
            "state": "DE",
            "postal_code": "198011058",
            "telephone_number": "855-832-6727",
            "fax_number": "772-675-9100"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1000 N. WEST STREET",
            "address_2": "SUITE 1200",
            "city": "WILMINGTON",
            "state": "DE",
            "postal_code": "198011058",
            "telephone_number": "855-832-6727",
            "fax_number": "772-675-9100"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARNELL",
        "first_name": "ALLYSON",
        "name_prefix": "Mrs.",
        "credential": "BCBA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-09-25",
        "last_updated": "2025-11-20",
        "certification_date": "2025-11-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "106S00000X",
            "taxonomy_group": "",
            "desc": "Behavior Technician",
            "state": "DE",
            "license": "RBT-18-49314",
            "primary": false
        },
        {
            "code": "103K00000X",
            "taxonomy_group": "",
            "desc": "Behavior Analyst",
            "state": "DE",
            "license": "1-22-58600",
            "primary": true
        },
        {
            "code": "101YM0800X",
            "taxonomy_group": "",
            "desc": "Counselor, Mental Health",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Lawrence Michael Markman, MD
• Valentina Markovsky, MD
• Donald Roderick Marks, PSYD
• Gabrielle S Marlow, RD
• Vincent Marmo, D.O.
• Susan Marquard
• Jennifer A. Marriner, APN
• Rebecca Marryott, PHARMD
• Callie Ann Marsalisi, MA CCC-SLP
• Martha Marsey

• Behavior Analyst in Wilmington, DE
• Providers in Wilmington, DE by specialty
• Behavior Analyst in Delaware

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 20, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.