YVONNE N OSEIWE-WILLIAMS MD
NPI 1538301676
Emergency Medicine in Baltimore, MD
About Yvonne N Oseiwe-williams Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
YVONNE N OSEIWE-WILLIAMS MD (NPI 1538301676) is an individual emergency medicine provider in Baltimore, Maryland, licensed in Maryland (D73679) and active in the NPI registry since April 2009. She is enrolled in Medicare PECOS, is affiliated with Virtua Mount Holly Hospital, and is a graduate of Pennsylvania State University College Of Medicine (2009).
NPPES Registry Identity
Specialties & Licenses
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 and accepts Medicare assignment
Yvonne N Oseiwe-williams Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
5Medicare enrollment records show Yvonne Oseiwe-williams reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Voorhees, NJ 08043
- Reassigned Medicare billing, New Jersey enrollment
- 332 clinicians in this Medicare group
Pottsville, PA 17901
- Reassigned Medicare billing, Pennsylvania enrollment
- 4,429 clinicians in this Medicare group
Mount Holly, NJ 08060
- Reassigned Medicare billing, New Jersey enrollment
- 248 clinicians in this Medicare group
Phillipsburg, NJ 08865
- Reassigned Medicare billing, New Jersey enrollment
- Medicare enrollment name: St Lukes Warren Physician Group PC
- 153 clinicians in this Medicare group
Du Bois, PA 15801
- Reassigned Medicare billing, Pennsylvania enrollment
- 168 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 3
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Virtua Mount Holly Hospital
Acute Care Hospitals · Mount Holly, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 21237 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.
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 Yvonne Oseiwe-williams's NPI number?
The NPI number for Yvonne Oseiwe-williams is 1538301676. It was assigned to this individual provider in the NPPES registry on April 6, 2009. The provider is also known as Yvonne Ezeala.
Where is Yvonne Oseiwe-williams located?
Yvonne Oseiwe-williams practices at 20 First Light Ct, Baltimore, MD 21237. The listed phone number is (443) 742-4516.
What is Yvonne Oseiwe-williams's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Yvonne Oseiwe-williams enrolled in Medicare?
Yes. Yvonne Oseiwe-williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Yvonne Oseiwe-williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Yvonne Oseiwe-williams reassigns Medicare benefits to 5 organizations: Emergency Physician Associates Of South Jersey P C (Voorhees, NJ), Geisinger Clinic (Pottsville, PA), Emergency Physician Services Of New Jersey,professional Association (Mount Holly, NJ), St. Luke's Warren Physician Group, PC (Phillipsburg, NJ) and Dubois Regional Medical Center (Du Bois, PA). 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 Yvonne Oseiwe-williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Yvonne Oseiwe-williams affiliated with any hospitals?
According to CMS data, Yvonne Oseiwe-williams is affiliated with Virtua Mount Holly Hospital.
When was this NPI record last updated?
The NPPES record for Yvonne Oseiwe-williams was last updated on June 16, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Yvonne N Oseiwe-Williams, MD · NPI 1538301676
Emergency Medicine physician in Baltimore, Maryland. Individual provider, active in the CMS NPPES registry since April 6, 2009.
## Identity
- **NPI:** 1538301676 (Entity type: Individual)
- **Enumerated:** April 6, 2009
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** D73679 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 20 FIRST LIGHT CT, Baltimore, MD 21237-2166
- **Phone:** (443) 742-4516
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Emergency Physician Associates Of South Jersey P C (NPI 1215965231, Voorhees, NJ); Geisinger Clinic (NPI 1043261183, Pottsville, PA); Emergency Physician Services Of New Jersey,professional Association (NPI 1831539568, Mount Holly, NJ); St. Luke's Warren Physician Group, PC (NPI 1174864490, Phillipsburg, NJ); Dubois Regional Medical Center (NPI 1992802391, Du Bois, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Pennsylvania State University College Of Medicine, class of 2009
## Record status
- **NPPES last updated:** June 16, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1538301676) · Data from the CMS NPPES public registry.