EMILY BRENNAN MSN, CPNP
NPI 1346905445
Nurse Practitioner - Pediatrics in Boston, MA
About Emily Brennan Msn, Cpnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
EMILY BRENNAN MSN, CPNP (NPI 1346905445) is an individual pediatrics provider in Boston, Massachusetts, licensed in Massachusetts (RN2309647) and active in the NPI registry since November 2021. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Emily Brennan Msn, Cpnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Emily Brennan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
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 Emily Brennan's NPI number?
The NPI number for Emily Brennan is 1346905445. It was assigned to this individual provider in the NPPES registry on November 3, 2021. The provider is also known as Emily O'brien.
Where is Emily Brennan located?
Emily Brennan practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-6000.
What is Emily Brennan's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Pediatrics, with taxonomy code 363LP0200X.
Is Emily Brennan enrolled in Medicare?
Yes. Emily Brennan is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Emily Brennan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Emily Brennan reassigns Medicare benefits to Children's Hospital Pediatric Associates, Inc (Boston, MA). The 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 Emily Brennan'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 Emily Brennan was last updated on December 16, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 months 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.
# Emily Brennan, MSN, CPNP · NPI 1346905445
Pediatrics physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since November 3, 2021.
## Identity
- **NPI:** 1346905445 (Entity type: Individual)
- **Enumerated:** November 3, 2021
- **Primary specialty:** Nurse Practitioner - Pediatrics · taxonomy 363LP0200X
- **State license:** RN2309647 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 300 LONGWOOD AVE, Boston, MA 02115
- **Phone:** (617) 355-6000
## 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:** Children's Hospital Pediatric Associates, Inc (NPI 1457306664, Boston, MA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 16, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1346905445) · Data from the CMS NPPES public registry.