IndividualActive
Jonathan Pfeffer, LSW
NPI 1831934074 · Social Worker · Philadelphia, PA
Jonathan Pfeffer, LSW is a Social Worker provider in Philadelphia, PA (NPI 1831934074).
Provider details
- NPI number
- 1831934074
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LSW
- Sex
- Male
- Sole proprietor
- No
- License
- SW141561 (PA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(56/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 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
1601 Walnut St Ste 512
Philadelphia, PA 19102-2903
Phone: (215) 233-3994
Street-level locationGet directions
Mailing address
1601 Walnut St Ste 512
Philadelphia, PA 19102-2903
Registry dates
- Enumerated
- 2024-06-28
- Last updated
- 2025-10-21
- Certified
- 2025-10-21
Frequently asked questions
- What is Jonathan Pfeffer's NPI number?
- Jonathan Pfeffer's National Provider Identifier (NPI) is 1831934074, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jonathan Pfeffer's specialty?
- Jonathan Pfeffer is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Jonathan Pfeffer located?
- Jonathan Pfeffer's practice location on file with NPPES is 1601 Walnut St Ste 512, Philadelphia, PA 19102-2903.
- What is Jonathan Pfeffer's phone number?
- The practice phone number listed in the NPPES registry for Jonathan Pfeffer is (215) 233-3994.
- Is Jonathan Pfeffer's NPI active?
- Yes — Jonathan Pfeffer's NPI (1831934074) is active in the NPPES registry as of the last update on 2025-10-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.