Gregory Clark, LPC CAC MHS
NPI 1649358623 · Addiction (Substance Use Disorder) Counselor · Exton, PA
Gregory Clark, LPC CAC MHS is a Addiction (Substance Use Disorder) Counselor provider in Exton, PA (NPI 1649358623).
Provider details
- NPI number
- 1649358623
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- LPC CAC MHS
- Sex
- Male
- Sole proprietor
- No
- License
- PC002876 (PA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2007-07-08
Frequently asked questions
- What is Gregory Clark's NPI number?
- Gregory Clark's National Provider Identifier (NPI) is 1649358623, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Clark's specialty?
- Gregory Clark is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Gregory Clark located?
- Gregory Clark's practice location on file with NPPES is 479 Thomas Jones Way, Exton, PA 19341.
- What is Gregory Clark's phone number?
- The practice phone number listed in the NPPES registry for Gregory Clark is (610) 648-1130.
- Is Gregory Clark's NPI active?
- Yes — Gregory Clark's NPI (1649358623) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.