Zachary Olsen, LSW
NPI 1023749561 · Social Worker · Lancaster, PA
Zachary Olsen, LSW is a Social Worker provider in Lancaster, PA (NPI 1023749561).
Provider details
- NPI number
- 1023749561
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LSW
- Sex
- Male
- Sole proprietor
- No
- License
- 44SL07168800 (NJ)
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
3 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
- 2022-06-23
- Last updated
- 2026-02-12
- Certified
- 2026-02-12
Frequently asked questions
- What is Zachary Olsen's NPI number?
- Zachary Olsen's National Provider Identifier (NPI) is 1023749561, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Olsen's specialty?
- Zachary Olsen is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Zachary Olsen located?
- Zachary Olsen's practice location on file with NPPES is 1681 Crown Ave, Lancaster, PA 17601-6303.
- What is Zachary Olsen's phone number?
- The practice phone number listed in the NPPES registry for Zachary Olsen is (717) 208-6686.
- Is Zachary Olsen's NPI active?
- Yes — Zachary Olsen's NPI (1023749561) is active in the NPPES registry as of the last update on 2026-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.