DR. PETER F WILLIAMS MD
NPI 1770628505
Emergency Medicine in Harrisonburg, VA
About Dr. Peter F Williams Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. PETER F WILLIAMS MD (NPI 1770628505) is an individual emergency medicine provider in Harrisonburg, Virginia, licensed in Virginia (0101245109) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, is affiliated with Sentara Rmh Medical Center, and is a graduate of University Of Virginia School Of Medicine (2006).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Peter F 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
2Medicare enrollment records show Peter Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Culpeper, VA 22701
- Reassigned Medicare billing, Virginia enrollment
- 1,294 clinicians in this Medicare group
Rockville, MD 20850
- Reassigned Medicare billing, Virginia enrollment
- 158 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 5
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.
Sentara Rmh Medical Center
Acute Care Hospitals · Harrisonburg, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 22801 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.
ROCKINGHAM, VA 22801
ROCKINGHAM, VA 22801
ROCKINGHAM, VA 22801
HARRISONBURG, VA 22801
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 Peter Williams's NPI number?
The NPI number for Peter Williams is 1770628505. It was assigned to this individual provider in the NPPES registry on February 20, 2007.
Where is Peter Williams located?
Peter Williams practices at 2010 Health Campus Dr, Harrisonburg, VA 22801. The listed phone number is (540) 689-1000.
What is Peter Williams's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Peter Williams enrolled in Medicare?
Yes. Peter 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 Peter Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Peter Williams reassigns Medicare benefits to 2 organizations: Emergency Medicine Associates P.A., P.C. (Culpeper, VA) and Mep Health, LLC (Rockville, MD). 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 Peter Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Peter Williams affiliated with any hospitals?
According to CMS data, Peter Williams is affiliated with Sentara Rmh Medical Center.
When was this NPI record last updated?
The NPPES record for Peter Williams was last updated on July 8, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Dr. Peter F Williams, MD · NPI 1770628505
Emergency Medicine physician in Harrisonburg, Virginia. Individual provider, active in the CMS NPPES registry since February 20, 2007.
## Identity
- **NPI:** 1770628505 (Entity type: Individual)
- **Enumerated:** February 20, 2007
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 0101245109 (Virginia)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2010 HEALTH CAMPUS DR, Harrisonburg, VA 22801-8679
- **Phone:** (540) 689-1000
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Emergency Medicine Associates P.A., P.C. (NPI 1881559102, Culpeper, VA); Mep Health, LLC (NPI 1164483558, Rockville, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Virginia School Of Medicine, class of 2006
## Record status
- **NPPES last updated:** July 8, 2011
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Source: [NPI Profile](https://npiprofile.com/npi/1770628505) · Data from the CMS NPPES public registry.