Janet Karpiak, M.D.
NPI 1821057761 · Pediatrics Physician · Darien, CT
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Janet Karpiak, M.D. is a Pediatrics Physician provider in Darien, CT (NPI 1821057761).
Provider details
- NPI number
- 1821057761
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 031417 (CT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-03-20
- Last updated
- 2020-10-24
- Certified
- 2020-10-24
Frequently asked questions
- What is Janet Karpiak's NPI number?
- Janet Karpiak's National Provider Identifier (NPI) is 1821057761, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Janet Karpiak's specialty?
- Janet Karpiak is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Janet Karpiak located?
- Janet Karpiak's practice location on file with NPPES is 745 Post Rd, Darien, CT 06820-4745.
- What is Janet Karpiak's phone number?
- The practice phone number listed in the NPPES registry for Janet Karpiak is (203) 655-6000.
- Does Janet Karpiak accept Medicare?
- Janet Karpiak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Janet Karpiak's NPI active?
- Yes — Janet Karpiak's NPI (1821057761) is active in the NPPES registry as of the last update on 2020-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.