DR. NADINE YOUSSEF M.D.
NPI 1013177427
Emergency Medicine in Boston, MA
About Dr. Nadine Youssef M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. NADINE YOUSSEF M.D. (NPI 1013177427) is an individual emergency medicine provider in Boston, Massachusetts, licensed in Massachusetts (235098) and active in the NPI registry since June 2008. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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)
Dr. Nadine Youssef M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Nadine Youssef reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Boston, MA 02111
- Reassigned Medicare billing, Massachusetts enrollment
- 30 clinicians in this Medicare group
Worcester, MA 01608
- Reassigned Medicare billing, Massachusetts enrollment
- 90 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.
Areas of Expertise CMS Part B claims 4
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02111 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 02111
BOSTON, MA 02111
BOSTON, MA 02111
BOSTON, MA 02111
BOSTON, MA 02111
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 Nadine Youssef's NPI number?
The NPI number for Nadine Youssef is 1013177427. It was assigned to this individual provider in the NPPES registry on June 10, 2008.
Where is Nadine Youssef located?
Nadine Youssef practices at 750 Washington St Box 311 / Department Of Emergency Medicine, Boston, MA 02111. The listed phone number is (617) 636-4723.
What is Nadine Youssef's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Nadine Youssef enrolled in Medicare?
Yes. Nadine Youssef is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Nadine Youssef's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nadine Youssef reassigns Medicare benefits to 2 organizations: Tufts Medical Center Ep LLC (Boston, MA) and Emergency Physician Associates Of Massachusetts PC (Worcester, 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 Nadine Youssef's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nadine Youssef accept?
Health plans from WellSense Health Plan list Nadine Youssef 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 Nadine Youssef was last updated on August 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Dr. Nadine Youssef, M.D. · NPI 1013177427
Emergency Medicine physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since June 10, 2008.
## Identity
- **NPI:** 1013177427 (Entity type: Individual)
- **Enumerated:** June 10, 2008
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 235098 (Massachusetts)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 750 WASHINGTON ST, BOX 311 / DEPARTMENT OF EMERGENCY MEDICINE, Boston, MA 02111-1526
- **Phone:** (617) 636-4723
## 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): Tufts Medical Center Ep LLC (NPI 1609015262, Boston, MA); Emergency Physician Associates Of Massachusetts PC (NPI 1730885252, Worcester, MA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 5, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1013177427) · Data from the CMS NPPES public registry.