Matthew Groff, LCSW
NPI 1336578046 · Clinical Social Worker · Williamsport, PA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Groff, LCSW is a Clinical Social Worker provider in Williamsport, PA (NPI 1336578046).
Provider details
- NPI number
- 1336578046
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- No
- License
- CW018791 (PA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
12 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
- 2013-11-03
- Last updated
- 2021-04-01
- Certified
- 2021-04-01
Frequently asked questions
- What is Matthew Groff's NPI number?
- Matthew Groff's National Provider Identifier (NPI) is 1336578046, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Groff's specialty?
- Matthew Groff is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Matthew Groff located?
- Matthew Groff's practice location on file with NPPES is 1100 Grampian Blvd, Williamsport, PA 17701-1909.
- What is Matthew Groff's phone number?
- The practice phone number listed in the NPPES registry for Matthew Groff is (570) 320-7525.
- Does Matthew Groff accept Medicare?
- Matthew Groff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Groff's NPI active?
- Yes — Matthew Groff's NPI (1336578046) is active in the NPPES registry as of the last update on 2021-04-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.