Nancy Arellano Ayllon
NPI 1588332514 · Behavior Analyst · Wilmington, DE
Nancy Arellano Ayllon is a Behavior Analyst provider in Wilmington, DE (NPI 1588332514).
Provider details
- NPI number
- 1588332514
- Entity type
- Individual
- Primary specialty
- Behavior AnalystBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 0-25-16289 (DE)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 9030 Red Branch Rd Ste 100Columbia, MD 21045-2003Phone: (877) 504-4141
Registry dates
- Enumerated
- 2021-09-03
- Last updated
- 2026-02-04
- Certified
- 2026-02-04
Frequently asked questions
- What is Nancy Arellano Ayllon's NPI number?
- Nancy Arellano Ayllon's National Provider Identifier (NPI) is 1588332514, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nancy Arellano Ayllon's specialty?
- Nancy Arellano Ayllon is listed in the NPPES registry with a primary specialty of Behavior Analyst (Behavioral Health & Social Service Providers).
- Where is Nancy Arellano Ayllon located?
- Nancy Arellano Ayllon's practice location on file with NPPES is 4023 Kennett Pike # 988, Wilmington, DE 19807-2018.
- What is Nancy Arellano Ayllon's phone number?
- The practice phone number listed in the NPPES registry for Nancy Arellano Ayllon is (484) 577-9928.
- Is Nancy Arellano Ayllon's NPI active?
- Yes — Nancy Arellano Ayllon's NPI (1588332514) is active in the NPPES registry as of the last update on 2026-02-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.