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KATHERINE ALTSHUL DARCI M.D.
NPI 1164448106
Pediatrics in Charlestown, MA

Active since July 14, 2006PECOS Enrolled
17 MOUNT VERNON ST, UNIT B, CHARLESTOWN, MA 02129(617) 306-0419 Get Directions Write a Review

NPPES record last updated: May 21, 2013. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Katherine Altshul Darci M.d. NPPES

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

KATHERINE ALTSHUL DARCI M.D. (NPI 1164448106) is an individual pediatrics provider in Charlestown, Massachusetts, licensed in Massachusetts (221008) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1164448106
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameKATHERINE ALTSHUL DARCICredential: M.D.
Location Address17 MOUNT VERNON ST, UNIT BCharlestown, MA 02129-3410
Mailing Address17 Mount Vernon St, Unit BCharlestown, MA 02129-3410 · (617) 306-0419
Phone(617) 306-0419
Sole ProprietorNo
Enumeration DateJuly 14, 2006
Last NPPES UpdateMay 21, 2013
✔ NPI 1164448106 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in MA · 221008
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.
17 MOUNT VERNON ST, Charlestown, MA 02129
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Katherine Altshul Darci 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

3

Medicare enrollment records show Katherine Darci reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Massachusetts General Physicians Organization Inc
1.0 mi
Dermatology
55 FRUIT ST, BUL 2
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,360 clinicians in this Medicare group
NPI 1801874573 (617) 724-0287
The General Hospital Corporation
1.0 mi
General Acute Care Hospital
55 FRUIT ST, BULFINCH 360
Boston, MA 02114
  • Reassigned Medicare billing, Massachusetts enrollment
  • 6,234 clinicians in this Medicare group
NPI 1023049236 (617) 726-2000
Brigham & Womens Physicians Organization Inc
3.7 mi
Internal Medicine
75 FRANCIS ST
Boston, MA 02115
  • Reassigned Medicare billing, Massachusetts enrollment
  • 4,574 clinicians in this Medicare group
NPI 1033535497 (617) 732-5500

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 02129 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
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
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.

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 Katherine Darci's NPI number?

The NPI number for Katherine Darci is 1164448106. It was assigned to this individual provider in the NPPES registry on July 14, 2006.

Where is Katherine Darci located?

Katherine Darci practices at 17 Mount Vernon St Unit B, Charlestown, MA 02129. The listed phone number is (617) 306-0419.

What is Katherine Darci's specialty?

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

Is Katherine Darci enrolled in Medicare?

Yes. Katherine Darci is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Katherine Darci's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Darci reassigns Medicare benefits to 3 organizations: Massachusetts General Physicians Organization Inc (Boston, MA), The General Hospital Corporation (Boston, MA) and Brigham & Womens Physicians Organization Inc (Boston, MA). 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 Katherine Darci'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 Katherine Darci was last updated on May 21, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.