SARAH CHAMSEDDINE M.D.
NPI 1275197550
Pediatrics - Pediatric Allergy/Immunology in Boston, MA
About Sarah Chamseddine M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SARAH CHAMSEDDINE M.D. (NPI 1275197550) is an individual pediatric allergy/immunology provider in Boston, Massachusetts, licensed in Massachusetts (1020299) and active in the NPI registry since April 2019. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Sarah Chamseddine M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Sarah Chamseddine 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.
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 Sarah Chamseddine's NPI number?
The NPI number for Sarah Chamseddine is 1275197550. It was assigned to this individual provider in the NPPES registry on April 23, 2019.
Where is Sarah Chamseddine located?
Sarah Chamseddine practices at 300 Longwood Ave, Boston, MA 02115. The listed phone number is (617) 355-6000.
What is Sarah Chamseddine's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Allergy/Immunology, with taxonomy code 2080P0201X.
Is Sarah Chamseddine enrolled in Medicare?
Yes. Sarah Chamseddine is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Sarah Chamseddine's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sarah Chamseddine 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 Sarah Chamseddine's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sarah Chamseddine accept?
Health plans from Taro Health list Sarah Chamseddine as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Sarah Chamseddine was last updated on May 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.
# Sarah Chamseddine, M.D. · NPI 1275197550
Pediatric Allergy/Immunology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since April 23, 2019.
## Identity
- **NPI:** 1275197550 (Entity type: Individual)
- **Enumerated:** April 23, 2019
- **Primary specialty:** Pediatrics - Pediatric Allergy/Immunology · taxonomy 2080P0201X
- **State license:** 1020299 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 LONGWOOD AVE, Boston, MA 02115-5724
- **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:** May 30, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1275197550) · Data from the CMS NPPES public registry.