Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

KAREN LEONARDO
NPI 1104731199
Assistant Behavior Analyst in Dorchester, MA

Q: What is Karen Leonardo's NPI number?

The NPI number for Karen Leonardo is 1104731199. It was assigned to this individual provider in the NPPES registry on August 17, 2026.

Q: What is Karen Leonardo's specialty?

The primary specialty registered for this NPI is Assistant Behavior Analyst with taxonomy code 106E00000X.

Q: When was this NPI record last updated?

The NPPES record for Karen Leonardo was last updated on August 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.

Active since August 17, 2026

38 HUTCHINGS ST APT 2R, DORCHESTER, MA 02121(857) 395-5552 Get Directions Write a Review

NPPES record added: August 17, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

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About Karen Leonardo NPPES

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

KAREN LEONARDO (NPI 1104731199) is an individual assistant behavior analyst provider in Dorchester, Massachusetts and active in the NPI registry since August 2026.

NPPES Registry Identity

NPI1104731199

Entity TypeIndividualFemale

Primary Taxonomy106E00000X

Provider Legal NameKAREN LEONARDO

Location Address38 HUTCHINGS ST APT 2RDorchester, MA 02121-2222

Mailing Address38 Hutchings St Apt 2rDorchester, MA 02121-2222

Phone(857) 395-5552

Sole ProprietorYes

Enumeration DateAugust 17, 2026

NPPES CertifiedAugust 16, 2026

✔ NPI 1104731199 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAssistant Behavior AnalystBehavioral Health & Social Service Providers

Taxonomy Code106E00000X

Definition

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.

38 HUTCHINGS ST APT 2R, Dorchester, MA 02121

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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 Karen Leonardo's NPI number?

The NPI number for Karen Leonardo is 1104731199. It was assigned to this individual provider in the NPPES registry on August 17, 2026.

Where is Karen Leonardo located?

Karen Leonardo practices at 38 Hutchings St Apt 2R, Dorchester, MA 02121. The listed phone number is (857) 395-5552.

What is Karen Leonardo's specialty?

The primary specialty registered for this NPI is Assistant Behavior Analyst with taxonomy code 106E00000X.

When was this NPI record last updated?

The NPPES record for Karen Leonardo was last updated on August 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.