ELIZABETH CASTLE PNP-AC
NPI 1073059135
Nurse Practitioner - Pediatrics in Boston, MA
About Elizabeth Castle Pnp-ac NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ELIZABETH CASTLE PNP-AC (NPI 1073059135) is an individual pediatrics provider in Boston, Massachusetts, licensed in Massachusetts (RN2293995) and active in the NPI registry since January 2017. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Elizabeth Castle Pnp-ac is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Elizabeth Castle reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 109 clinicians in this Medicare group
Boston, MA 02115
- Reassigned Medicare billing, Massachusetts enrollment
- 1,358 clinicians in this Medicare group
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 02115 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02115
BOSTON, MA 02115
BOSTON, MA 02115
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 Elizabeth Castle's NPI number?
The NPI number for Elizabeth Castle is 1073059135. It was assigned to this individual provider in the NPPES registry on January 13, 2017.
Where is Elizabeth Castle located?
Elizabeth Castle practices at 300 Longwood Ave Cair, Fegan 3, Boston, MA 02115. The listed phone number is (617) 355-5274.
What is Elizabeth Castle's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.
Is Elizabeth Castle enrolled in Medicare?
Yes. Elizabeth Castle is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Elizabeth Castle's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Castle reassigns Medicare benefits to 2 organizations: Chmc Surgical Foundation Inc (Boston, MA) and Children's Hospital Pediatric Associates, 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 Elizabeth Castle'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 Elizabeth Castle was last updated on January 13, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Elizabeth Castle, PNP-AC · NPI 1073059135
Pediatrics physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since January 13, 2017.
## Identity
- **NPI:** 1073059135 (Entity type: Individual)
- **Enumerated:** January 13, 2017
- **Primary specialty:** Nurse Practitioner - Pediatrics · taxonomy 363LP0200X
- **State license:** RN2293995 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 300 LONGWOOD AVE, CAIR, FEGAN 3, Boston, MA 02115-5724
- **Phone:** (617) 355-5274
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Chmc Surgical Foundation Inc (NPI 1902977515, Boston, MA); Children's Hospital Pediatric Associates, Inc (NPI 1457306664, Boston, MA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 13, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1073059135) · Data from the CMS NPPES public registry.