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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.

WILLIAM WELSH
NPI 1902444854
Counselor - Professional in Philadelphia, PA

Active since December 11, 2019
2801 GRANT AVE, PHILADELPHIA, PA 19114(215) 878-3400 Get Directions Write a Review

NPPES record last updated: July 31, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 31, 2026, Jun 24, 2020, Dec 11, 2019 (3 updates tracked since 2019).

About William Welsh NPPES

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

WILLIAM WELSH (NPI 1902444854) is an individual professional provider in Philadelphia, Pennsylvania, licensed in (PC010102) and active in the NPI registry since December 2019.

NPPES Registry Identity

NPI1902444854
Entity TypeIndividualMale
Primary Taxonomy101YP2500X
Provider Legal NameWILLIAM WELSH
Location Address2801 GRANT AVEPhiladelphia, PA 19114-1032
Mailing Address503 Floral Vale BlvdYardley, PA 19067-5512 · (215) 497-0240
Phone(215) 878-3400
Sole ProprietorNo
Enumeration DateDecember 11, 2019
Last NPPES UpdateJuly 31, 20263 updates tracked since enumeration
NPPES CertifiedJuly 31, 2026
✔ NPI 1902444854 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyCounselor · ProfessionalBehavioral Health & Social Service Providers
Taxonomy Code101YP2500X
License✔ Licensed · PC010102
Also ListedBehavior AnalystTaxonomy 103K00000X · License 1-25-79432 (PA)
2801 GRANT AVE, Philadelphia, PA 19114
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Other Providers at the Same Location NPPES 14

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

MS. HEATHER ALTERS LCSW
Social Worker (Clinical)
2801 GRANT AVE
PHILADELPHIA, PA 19114
Philadelphia County (215) 878-3400
CORYN NICOLE VOCE MS, LMFT
Marriage & Family Therapist
2801 GRANT AVE
PHILADELPHIA, PA 19114
Philadelphia County (215) 878-3400
KEVIN JAMES PRIEST BCBA, LBS
Behavior Analyst
2801 GRANT AVE
PHILADELPHIA, PA 19114
Philadelphia County (215) 878-3400
ALLYSSA B MILLAR
Counselor (Professional)
2801 GRANT AVE
PHILADELPHIA, PA 19114
Philadelphia County (215) 220-2165
ZAKEENAH T HARVEY
Behavior Analyst
2801 GRANT AVE
PHILADELPHIA, PA 19114
Philadelphia County (215) 220-2165
MOLLY MCGEE
Counselor (Professional)
2801 GRANT AVE
PHILADELPHIA, PA 19114
Philadelphia County (215) 695-4308
DANIEL JOSEPH SNOCK
Counselor (Professional)
2801 GRANT AVE
PHILADELPHIA, PA 19114
Philadelphia County (215) 878-3400
MS. KATIE LEE GREBLE MA ATR-BC LPC
Counselor (Professional)
2801 GRANT AVE
PHILADELPHIA, PA 19114
Philadelphia County (215) 695-4286

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 William Welsh's NPI number?

The NPI number for William Welsh is 1902444854. It was assigned to this individual provider in the NPPES registry on December 11, 2019.

Where is William Welsh located?

William Welsh practices at 2801 Grant Ave, Philadelphia, PA 19114. The listed phone number is (215) 878-3400.

What is William Welsh's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.

When was this NPI record last updated?

The NPPES record for William Welsh was last updated on July 31, 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.