IndividualActive
Leslie Book, LCSW
NPI 1235419508 · Clinical Social Worker · Lancaster, PA
Leslie Book, LCSW is a Clinical Social Worker provider in Lancaster, PA (NPI 1235419508).
Provider details
- NPI number
- 1235419508
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- CW016779 (PA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(81/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
625 S Duke St
Lancaster, PA 17602-4509
Phone: (717) 299-6371
Street-level locationGet directions
Mailing address
304 N Water St
Lancaster, PA 17603-3374
Registry dates
- Enumerated
- 2011-08-18
- Last updated
- 2019-11-11
Frequently asked questions
- What is Leslie Book's NPI number?
- Leslie Book's National Provider Identifier (NPI) is 1235419508, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leslie Book's specialty?
- Leslie Book is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Leslie Book located?
- Leslie Book's practice location on file with NPPES is 625 S Duke St, Lancaster, PA 17602-4509.
- What is Leslie Book's phone number?
- The practice phone number listed in the NPPES registry for Leslie Book is (717) 299-6371.
- Is Leslie Book's NPI active?
- Yes — Leslie Book's NPI (1235419508) is active in the NPPES registry as of the last update on 2019-11-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.