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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

GRACE WILLOUGHBY
NPI 1356045363
Behavior Analyst in Tucson, AZ

Active since March 27, 2023
3710 W OVERTON RD, TUCSON, AZ 85742(520) 485-8846 Get Directions Write a Review

NPPES record last updated: July 28, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 28, 2026, Jul 10, 2026, Mar 17, 2025 and 1 more (4 updates tracked since 2023).

About Grace Willoughby NPPES

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

GRACE WILLOUGHBY (NPI 1356045363) is an individual behavior analyst provider in Tucson, Arizona, licensed in Arizona (1-25-79610) and active in the NPI registry since March 2023.

NPPES Registry Identity

NPI1356045363
Entity TypeIndividualFemale
Primary Taxonomy103K00000X
Provider Legal NameGRACE WILLOUGHBY
Location Address3710 W OVERTON RDTucson, AZ 85742-0152
Mailing Address3710 W Overton RdTucson, AZ 85742
Phone(520) 485-8846
Sole ProprietorNo
Enumeration DateMarch 27, 2023
Last NPPES UpdateJuly 28, 20264 updates tracked since enumeration
NPPES CertifiedJuly 28, 2026
✔ NPI 1356045363 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyBehavior AnalystBehavioral Health & Social Service Providers
Taxonomy Code103K00000X
License✔ Licensed in AZ · 1-25-79610
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.
3710 W OVERTON RD, Tucson, AZ 85742
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Other Providers at the Same Location NPPES 2

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

MS. ABIR AL HOURY BCBA
Behavior Analyst
3710 W OVERTON RD
TUCSON, AZ 85742
Pima County (480) 852-4813
VANESSA VEGA
Behavior Analyst
3710 W OVERTON RD
TUCSON, AZ 85742
Pima County (480) 933-1011

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 Grace Willoughby's NPI number?

The NPI number for Grace Willoughby is 1356045363. It was assigned to this individual provider in the NPPES registry on March 27, 2023.

Where is Grace Willoughby located?

Grace Willoughby practices at 3710 W Overton Rd, Tucson, AZ 85742. The listed phone number is (520) 485-8846.

What is Grace Willoughby's specialty?

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

When was this NPI record last updated?

The NPPES record for Grace Willoughby was last updated on July 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 days 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.