Jeffrey Siemsen, LCSW
NPI 1629223490 · Clinical Social Worker · Kennett Square, PA
Jeffrey Siemsen, LCSW is a Clinical Social Worker provider in Kennett Square, PA (NPI 1629223490).
Provider details
- NPI number
- 1629223490
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- CW016873 (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
17 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
- 2008-11-20
- Last updated
- 2011-09-26
Frequently asked questions
- What is Jeffrey Siemsen's NPI number?
- Jeffrey Siemsen's National Provider Identifier (NPI) is 1629223490, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Siemsen's specialty?
- Jeffrey Siemsen is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Jeffrey Siemsen located?
- Jeffrey Siemsen's practice location on file with NPPES is 107 Marshall Bridge Rd, Kennett Square, PA 19348-2705.
- What is Jeffrey Siemsen's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Siemsen is (302) 521-3019.
- Is Jeffrey Siemsen's NPI active?
- Yes — Jeffrey Siemsen's NPI (1629223490) is active in the NPPES registry as of the last update on 2011-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.