Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mrs. Sierra Thornhill, MS, BCBA, LBS

Individual provider Behavior Analyst · NPI 1649125816

Mrs. Sierra Thornhill, MS, BCBA, LBS is a Behavior Analyst in Willow Grove, Pennsylvania. Practices as a sole proprietor. Licensed in Pennsylvania.

Licensed in
PA
In the registry since
2026
What do these letters mean?
MS — Master of Science
A graduate science degree.
BCBA — Board Certified Behavior Analyst
Designs and supervises applied behaviour analysis programmes, often for autism.

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Practice location Address checks out

231 Summit Ave
Willow Grove, PA 19090-2509
Phone: (215) 407-3429
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Behavior Analyst (primary) Taxonomy 103K00000X · Licence 1-20-43680 (PA)

Record details

NPI number1649125816
Entity typeIndividual (Type 1)
GenderFemale
Credentials MS , BCBA , LBS
Sole proprietorYes
NPI enumeratedMarch 3, 2026
Last updated in NPPESMarch 3, 2026
Certification dateMarch 3, 2026

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