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Active NPI 1871415414 Individual Practitioner Female Practitioner

Sierra Danielle Leek , BCBA

Behavior Analyst • Braintree, MA

Professional Overview & Biography Verified Profile Summary

Sierra Leek, BCBA is a registered healthcare professional specializing in Behavior Analyst in Braintree, MA. Practice services are available at 220 FORBES RD STE 1120 under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

220 Forbes Rd Ste 1120

Braintree, MA 021842800

Telephone 6173222694

Specialty Benchmarks & Practice Insights

Comparative analytics for Behavior Analyst in Braintree, MA

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 10.5 Yrs
State Avg: 7.3 Yrs
Regional Practice Density
30 Specialists

Practicing in Braintree, MA (4758 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

CMS Verified: 2026-07-27
Behavior Analyst Primary Specialty

NUCC Taxonomy Code: 103K00000X

State License MA 1-26-90020

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.

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

4 Associated Practitioners
Carly Jewell

Behavior Analyst

NPI 1255008926
Emma Sullivan , OTR, L

Occupational Therapist

NPI 1609793819

Occupational Therapist Registered, L

Shaina Smolik , NP

Nurse Practitioner - Pediatrics

NPI 1780138354

Nurse Practitioner

Kiela Bridge , MOT, OTR

Occupational Therapist

NPI 1912750142

Master of Occupational Therapy, Occupational Therapist Registered

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events
NPI Profile Active July 27, 2026

NPI status registered as active in NPPES database

📍
Updated Practice Location July 27, 2026

Registered at 220 FORBES RD STE 1120, BRAINTREE, MA 021842800 (Tel: 6173222694)

📍
Updated Business Mailing Address July 27, 2026

Registered at 78 TANAGER RD, ATTLEBORO, MA 027031723

👤
Provider Name / Credentials Updated July 27, 2026

Recorded as SIERRA LEEK, BCBA

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 27, 2026

Behavior Analyst (License #1-26-90020 in MA)

🟢
Initial NPI Registration & Enumeration July 27, 2026

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

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NPI Administrative Meta

NPI Number: 1871415414
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: July 27, 2026
Last Update: July 27, 2026
Sole Proprietor: No

Mailing Address

78 Tanager Rd

Attleboro, MA 027031723

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.