Nancy Arellano Ayllon
Behavior Analyst β’ Wilmington, DE
4023 Kennett Pike # 988
Wilmington, DE 198072018
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
4023 Kennett Pike # 988
Wilmington, DE 198072018
NPPES lists 1 additional practice-address record in Columbia, MD. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Behavior Analyst: NPPES taxonomy is a reported classification, not proof of board certification.
NPI first issued
2021
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Wilmington and Delaware
63 active clinicians are listed under Behavior Analyst with a practice address in Wilmington, DE (170 in Delaware).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Wilmington
0% of these 63 clinicians have the CMS telehealth indicator.
0% of these 63 clinicians are listed by CMS as accepting Medicare assignment.
Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2026-02-04NUCC Taxonomy Code: 103K00000X
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.
NUCC Taxonomy Code: 106E00000X
An assistant behavior analyst is qualified by Behavior Analyst Certification Board certification and/or a state-issued license or credential in behavior analysis to practice under the supervision of an appropriately credentialed professional behavior analyst. An assistant behavior analyst delivers services consistent with the dimensions of applied behavior analysis and supervision requirements defined in state laws or regulations and/or national certification standards. Common services may include, but are not limited to, conducting behavioral assessments, analyzing data, writing behavior-analytic treatment plans, training and supervising others in implementation of components of treatment plans, and direct implementation of treatment plans.
Secondary Practice Locations
9030 Red Branch Rd Ste 100
Columbia, MD 210452003
Phone: 8775044141
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 1080 S CHAPEL ST STE 100, NEWARK, DE 197021378 (Tel: 3023580757)
Additional practice office at 9030 Red Branch Rd Ste 100, Columbia, MD 210452003
Assistant Behavior Analyst (license number reported to NPPES: DE 0-25-16289)
Registered at 2342 PLEASANT VALLEY RD, NEWARK, DE 197022108 (Tel: 3023580757)
NPI status registered as active in NPPES database
Registered at 4023 KENNETT PIKE # 988, WILMINGTON, DE 198072018 (Tel: 4845779928)
Registered at 2342 PLEASANT VALLEY RD LOT 4, NEWARK, DE 197022108 (Tel: 3023580757)
Recorded as NANCY ARELLANO AYLLON
Behavior Technician
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Mailing Address
1080 S Chapel St Ste 100
Newark, DE 197021378
Phone: 3023580757