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DR. JANET WAKSMUNDZKI KARPIAK M.D.
NPI 1821057761
Pediatrics in Darien, CT

Active since March 20, 2006PECOS Enrolled
745 POST RD, DARIEN, CT 06820(203) 655-6000(203) 655-6003 Get Directions Write a Review

NPPES record last updated: October 24, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Janet Waksmundzki Karpiak M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JANET WAKSMUNDZKI KARPIAK M.D. (NPI 1821057761) is an individual pediatrics provider in Darien, Connecticut, licensed in Connecticut (031417) and active in the NPI registry since March 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1821057761
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. JANET WAKSMUNDZKI KARPIAKCredential: M.D.
Location Address745 POST RDDarien, CT 06820-4745
Mailing Address58 Ledgebrook DrNorwalk, CT 06854-1064 · (203) 257-8670
Phone(203) 655-6000
Fax(203) 655-6003
Sole ProprietorNo
Enumeration DateMarch 20, 2006
Last NPPES UpdateOctober 24, 2020
NPPES CertifiedOctober 24, 2020
✔ NPI 1821057761 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in CT · 031417
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
745 POST RD, Darien, CT 06820
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Other Names 1

Former Name (1)Dr. Janet Marie Waksmundzki M.d.

Other Identifiers 1

Medicaid001314179CT

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Janet Waksmundzki Karpiak M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Janet Karpiak reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Norwalk Community Health Center Inc
2.7 mi
Health Service
120 CONNECTICUT AVENUE
Norwalk, CT 06854
  • Reassigned Medicare billing, Connecticut enrollment
  • 60 clinicians in this Medicare group
NPI 1841226347 (203) 899-1770
Stamford Health Medical Group Inc
2.7 mi
General Practice
ONE OMEGA DRIVE, BUILDING 3, 2ND FLOOR
Stamford, CT 06907
  • Reassigned Medicare billing, Connecticut enrollment
  • 496 clinicians in this Medicare group
NPI 1154633980 (203) 276-7447

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06820 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$93.86 typical visit price
range $60.82 – $183.10
Typical copayment $23.46 (range $15.20 – $45.77)
Most-billed visit code 99203
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. CHRISTEN ROSE VOGEL M.D.
Pediatrics
745 POST RD
DARIEN, CT 06820
Western Connecticut Planning Region (203) 655-6000
DR. JULIE LYNN SWEENEY M.D.
Pediatrics
745 POST RD
DARIEN, CT 06820
Western Connecticut Planning Region (203) 309-6215

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Janet Karpiak's NPI number?

The NPI number for Janet Karpiak is 1821057761. It was assigned to this individual provider in the NPPES registry on March 20, 2006. The provider is also known as Dr. Janet Marie Waksmundzki M.D..

Where is Janet Karpiak located?

Janet Karpiak practices at 745 Post Rd, Darien, CT 06820. The listed phone number is (203) 655-6000.

What is Janet Karpiak's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Janet Karpiak enrolled in Medicare?

Yes. Janet Karpiak is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Janet Karpiak's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Janet Karpiak reassigns Medicare benefits to 2 organizations: Norwalk Community Health Center Inc (Norwalk, CT) and Stamford Health Medical Group Inc (Stamford, CT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Janet Karpiak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Janet Karpiak was last updated on October 24, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.