Diana Siwek, LCSW
NPI 1578831830 · Clinical Social Worker · Columbia, MD
Diana Siwek, LCSW is a Clinical Social Worker provider in Columbia, MD (NPI 1578831830).
Provider details
- NPI number
- 1578831830
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 44SC05577900 (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
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
Mailing address
Registry dates
- Enumerated
- 2011-12-01
- Last updated
- 2014-09-26
Frequently asked questions
- What is Diana Siwek's NPI number?
- Diana Siwek's National Provider Identifier (NPI) is 1578831830, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Siwek's specialty?
- Diana Siwek is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Diana Siwek located?
- Diana Siwek's practice location on file with NPPES is 9030 Route 108 Ste a, Columbia, MD 21045-1990.
- What is Diana Siwek's phone number?
- The practice phone number listed in the NPPES registry for Diana Siwek is (410) 740-1901.
- Is Diana Siwek's NPI active?
- Yes — Diana Siwek's NPI (1578831830) is active in the NPPES registry as of the last update on 2014-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.