Karl Koistinen, LCSW
NPI 1225335292 · Clinical Social Worker · West Hartford, CT
Karl Koistinen, LCSW is a Clinical Social Worker provider in West Hartford, CT (NPI 1225335292).
Provider details
- NPI number
- 1225335292
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 005267 (CT)
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
15 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
- 2011-02-27
- Last updated
- 2011-02-27
Frequently asked questions
- What is Karl Koistinen's NPI number?
- Karl Koistinen's National Provider Identifier (NPI) is 1225335292, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karl Koistinen's specialty?
- Karl Koistinen is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Karl Koistinen located?
- Karl Koistinen's practice location on file with NPPES is 998 Farmington Ave, West Hartford, CT 06107-2162.
- What is Karl Koistinen's phone number?
- The practice phone number listed in the NPPES registry for Karl Koistinen is (860) 803-8089.
- Is Karl Koistinen's NPI active?
- Yes — Karl Koistinen's NPI (1225335292) is active in the NPPES registry as of the last update on 2011-02-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.