1. Home
  2. Directory
  3. Pennsylvania
  4. Exton
  5. Counselor
  6. NPI Profile

GREGORY M CLARK LPC CAC MHS
NPI 1649358623
Counselor - Addiction (Substance Use Disorder) in Exton, PA

Active since November 01, 2006
479 THOMAS JONES WAY, SUITE 800, EXTON, PA 19341(610) 648-1130(610) 560-8219 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Gregory M Clark Lpc Cac Mhs NPPES

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

GREGORY M CLARK LPC CAC MHS (NPI 1649358623) is an individual addiction (substance use disorder) provider in Exton, Pennsylvania, licensed in Pennsylvania (PC002876) and active in the NPI registry since November 2006.

NPPES Registry Identity

NPI1649358623
Entity TypeIndividualMale
Primary Taxonomy101YA0400X
Provider Legal NameGREGORY M CLARKCredential: LPC CAC MHS
Location Address479 THOMAS JONES WAY, SUITE 800Exton, PA 19341
Mailing Address479 Thomas Jones Way, Suite 800Exton, PA 19341 · (610) 648-1130 · Fax (610) 560-8219
Phone(610) 648-1130
Fax(610) 560-8219
Sole ProprietorNo
Enumeration DateNovember 1, 2006
Last NPPES UpdateJuly 8, 2007
✔ NPI 1649358623 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers
Taxonomy Code101YA0400X
License✔ Licensed in PA · PC002876
479 THOMAS JONES WAY, Exton, PA 19341
Open in Google Maps ↗

Other Providers at the Same Location NPPES 20

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

MAIN LINE HOSPITALS, INC.
Clinic/Center (Mental Health (Including Community Mental Health Center))
479 THOMAS JONES WAY, SUITE 800
EXTON, PA 19341
Chester County (610) 560-8200
JOANNE LEWIS CAC
Counselor (Addiction (Substance Use Disorder))
479 THOMAS JONES WAY, SUITE 800
EXTON, PA 19341
Chester County (610) 648-1130
DR. CHRISTOPHER JOSEPH LYONS M.D.
Orthopaedic Surgery (Adult Reconstructive Orthopaedic Surgery)
479 THOMAS JONES WAY, STE 300
EXTON, PA 19341
Chester County (610) 280-9999
LEAH MARIANI
Counselor (Addiction (Substance Use Disorder))
479 THOMAS JONES WAY
EXTON, PA 19341
Chester County (855) 687-2410
DR. ANNA HONG NGUYEN DMD
Dentist (General Practice)
479 THOMAS JONES WAY, SUITE 600
EXTON, PA 19341
Chester County (267) 460-4254
MRS. MARIE KEELY
Counselor (Addiction (Substance Use Disorder))
479 THOMAS JONES WAY, SUITE 800
EXTON, PA 19341
Chester County (610) 560-8204
KATHARINE NEIDER LSW
Counselor (Addiction (Substance Use Disorder))
479 THOMAS JONES WAY
EXTON, PA 19341
Chester County (484) 565-1130
CENTER FOR ADDICTIVE DISEASES
Community/Behavioral Health
479 THOMAS JONES WAY
EXTON, PA 19341
Chester County (484) 565-1130

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 Gregory Clark's NPI number?

The NPI number for Gregory Clark is 1649358623. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Where is Gregory Clark located?

Gregory Clark practices at 479 Thomas Jones Way Suite 800, Exton, PA 19341. The listed phone number is (610) 648-1130.

What is Gregory Clark's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

When was this NPI record last updated?

The NPPES record for Gregory Clark was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years 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.