William Letwinsky, MSW, LSW
NPI 1376689190 · Mental Health Counselor · Scranton, PA
William Letwinsky, MSW, LSW is a Mental Health Counselor provider in Scranton, PA (NPI 1376689190).
Provider details
- NPI number
- 1376689190
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Credential
- MSW, LSW
- Sex
- Male
- Sole proprietor
- No
- License
- SW000405E (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
- 2007-01-29
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Letwinsky's NPI number?
- William Letwinsky's National Provider Identifier (NPI) is 1376689190, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Letwinsky's specialty?
- William Letwinsky is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is William Letwinsky located?
- William Letwinsky's practice location on file with NPPES is 700 Quincy Ave, Scranton, PA 18510-1724.
- What is William Letwinsky's phone number?
- The practice phone number listed in the NPPES registry for William Letwinsky is (570) 340-2147.
- Is William Letwinsky's NPI active?
- Yes — William Letwinsky's NPI (1376689190) 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.