MRS. ALLYSON MARNELL BCBA
NPI 1699250712
Behavior Analyst in Wilmington, DE

Q: What is Allyson Marnell's NPI number?

The NPI number for Allyson Marnell is 1699250712. It was assigned to this individual provider in the NPPES registry on September 25, 2018.

Q: What is Allyson Marnell's specialty?

The primary specialty registered for this NPI is Behavior Analyst with taxonomy code 103K00000X.

Q: When was this NPI record last updated?

The NPPES record for Allyson Marnell was last updated on November 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since September 25, 2018

1000 N. WEST STREET, SUITE 1200, WILMINGTON, DE 19801(855) 832-6727(772) 675-9100 Get Directions Write a Review

NPPES record last updated: November 20, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Nov 20, 2025, Oct 7, 2025, Sep 12, 2025 and 8 more (11 updates tracked since 2018).

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About Mrs. Allyson Marnell Bcba NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MRS. ALLYSON MARNELL BCBA (NPI 1699250712) is an individual behavior analyst provider in Wilmington, Delaware, licensed in Delaware (1-22-58600) and active in the NPI registry since September 2018.

NPPES Registry Identity

NPI1699250712

Entity TypeIndividualFemale

Primary Taxonomy103K00000X

Provider Legal NameMRS. ALLYSON MARNELLCredential: BCBA

Location Address1000 N. WEST STREET, SUITE 1200Wilmington, DE 19801-1058

Mailing Address1000 N. West Street, Suite 1200Wilmington, DE 19801-1058 · (855) 832-6727 · Fax (772) 675-9100

Phone(855) 832-6727

Fax(772) 675-9100

Sole ProprietorNo

Enumeration DateSeptember 25, 2018

Last NPPES UpdateNovember 20, 202511 updates tracked since enumeration

NPPES CertifiedNovember 20, 2025

✔ NPI 1699250712 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyBehavior AnalystBehavioral Health & Social Service Providers

Taxonomy Code103K00000X

License✔ Licensed in DE · 1-22-58600

Definition

A behavior analyst is qualified by at least a master's degree and Behavior Analyst Certification Board certification and/or a state-issued credential (such as a license) to practice behavior analysis independently. Behavior analysts provide the required supervision to assistant behavior analysts and behavior technicians. A behavior analyst delivers services consistent with the dimensions of applied behavior analysis. Common services may include, but are not limited to, conducting behavioral assessments, analyzing data, writing and revising behavior-analytic treatment plans, training others to implement components of treatment plans, and overseeing implementation of treatment plans.

Also ListedCounselor · Mental HealthTaxonomy 101YM0800X

Also ListedBehavior TechnicianTaxonomy 106S00000X · License RBT-18-49314 (DE)

1000 N. WEST STREET, Wilmington, DE 19801

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter from NH Healthy Families, Ambetter from Sunflower Health Plan and more.Insurance ›

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. KISHANA MONAE SWEATT

Behavior Analyst

1000 N. WEST STREET, SUITE 1200
WILMINGTON, DE 19801

New Castle County (855) 832-6727

LINDSAY L JULIUS

Behavior Analyst

1000 N. WEST STREET, SUITE 1200
WILMINGTON, DE 19801

New Castle County (855) 832-6727

MELINDA SHAW BCBA

Behavior Analyst

1000 N. WEST STREET, SUITE 1200
WILMINGTON, DE 19801

New Castle County (855) 832-6727

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Allyson Marnell's NPI number?

The NPI number for Allyson Marnell is 1699250712. It was assigned to this individual provider in the NPPES registry on September 25, 2018.

Where is Allyson Marnell located?

Allyson Marnell practices at 1000 N. West Street Suite 1200, Wilmington, DE 19801. The listed phone number is (855) 832-6727.

What is Allyson Marnell's specialty?

The primary specialty registered for this NPI is Behavior Analyst with taxonomy code 103K00000X.

What insurance does Allyson Marnell accept?

Health plans from Ambetter Health, Ambetter Health of Delaware, Ambetter from Home State Health, Ambetter from NH Healthy Families and Ambetter from Sunflower Health Plan and 2 other insurers list Allyson Marnell as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Allyson Marnell was last updated on November 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.