JEAN M WILLIAMS MD
NPI 1205887106
Emergency Medicine in Washington, DC
About Jean M Williams Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JEAN M WILLIAMS MD (NPI 1205887106) is an individual emergency medicine provider in Washington, District Of Columbia, licensed in District Of Columbia (MD2031) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Jean M Williams Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Jean Williams reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20017
- Reassigned Medicare billing, District of Columbia enrollment
- 105 clinicians in this Medicare group
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- Also billed through NPI 1376887844 (Maryland)
- 3,530 clinicians in this Medicare group
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- Medicare enrollment name: Whc Physician Group LLC
- 613 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 20017 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.
WASHINGTON, DC 20017
WASHINGTON, DC 20017
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 Jean Williams's NPI number?
The NPI number for Jean Williams is 1205887106. It was assigned to this individual provider in the NPPES registry on May 15, 2006.
Where is Jean Williams located?
Jean Williams practices at 1150 Varnum St NE NE, Washington, DC 20017. The listed phone number is (202) 574-6000.
What is Jean Williams's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Jean Williams enrolled in Medicare?
Yes. Jean Williams is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Jean Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jean Williams reassigns Medicare benefits to 3 organizations: Cep America LLC (Washington, DC), Medstar Medical Group II LLC (Washington, DC) and Whc Emerg Phys (Washington, DC). 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 Jean Williams'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 Jean Williams was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Jean M Williams, MD · NPI 1205887106
Emergency Medicine physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since May 15, 2006.
## Identity
- **NPI:** 1205887106 (Entity type: Individual)
- **Enumerated:** May 15, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** MD2031 (District of Columbia)
- **Sole proprietor:** No
## Practice location
- **Address:** 1150 VARNUM ST NE, NE, Washington, DC 20017-2104
- **Phone:** (202) 574-6000
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Cep America LLC (NPI 1073914396, Washington, DC); Medstar Medical Group II LLC (NPI 1023836137, Washington, DC); Whc Emerg Phys (NPI 1306260625, Washington, DC) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 7, 2023
- **Other identifiers:** Other CS9408371 (DC); Medicaid 032376800 (DC)
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Source: [NPI Profile](https://npiprofile.com/npi/1205887106) · Data from the CMS NPPES public registry.