Jan Mittleman, LCSW
NPI 1134372535 · Clinical Social Worker · Greenwich, CT
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jan Mittleman, LCSW is a Clinical Social Worker provider in Greenwich, CT (NPI 1134372535).
Provider details
- NPI number
- 1134372535
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 004543 (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
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
- 2008-10-29
- Last updated
- 2008-10-29
Frequently asked questions
- What is Jan Mittleman's NPI number?
- Jan Mittleman's National Provider Identifier (NPI) is 1134372535, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jan Mittleman's specialty?
- Jan Mittleman is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Jan Mittleman located?
- Jan Mittleman's practice location on file with NPPES is 1 Holly Hill Ln, Greenwich, CT 06830-6001.
- What is Jan Mittleman's phone number?
- The practice phone number listed in the NPPES registry for Jan Mittleman is (203) 622-1881.
- Does Jan Mittleman accept Medicare?
- Jan Mittleman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jan Mittleman's NPI active?
- Yes — Jan Mittleman's NPI (1134372535) is active in the NPPES registry as of the last update on 2008-10-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.