Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

William Welsh

Individual provider Behavior Analyst · NPI 1902444854

William Welsh is a Behavior Analyst in Philadelphia, Pennsylvania. Works from 3 locations. Licensed in Pennsylvania.

Licensed in
PA
In the registry since
2019
Specialties on file
2
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Practice location Address checks out

2801 Grant Ave
Philadelphia, PA 19114-1032
Phone: (215) 878-3400
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 4601 Market St, Philadelphia, PA 19139-4636 — (215) 878-3400
  • 503 Floral Vale Blvd, Yardley, PA 19067-5512 — (215) 497-0240

Specialties & licences

Professional Counselor (primary) Taxonomy 101YP2500X · Licence PC010102
Behavior Analyst Taxonomy 103K00000X · Licence 1-25-79432 (PA)

Record details

NPI number1902444854
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedDecember 11, 2019
Last updated in NPPESJuly 31, 2026
Certification dateJuly 31, 2026
Mailing address503 Floral Vale Blvd, Yardley, PA 19067-5512

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