DR. WILLIAM HARRISON KIMBROUGH M.D.
NPI 1821236357
Internal Medicine in Fairfax, VA
About Dr. William Harrison Kimbrough M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM HARRISON KIMBROUGH M.D. (NPI 1821236357) is an individual internal medicine provider in Fairfax, Virginia, licensed in Virginia (0101260163) and active in the NPI registry since January 2009. He is enrolled in Medicare PECOS, maintains a secondary practice location in Washington, and is a graduate of Georgetown University School Of Medicine (2006).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
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. William Harrison Kimbrough M.d. 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 William Kimbrough reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20001
- Reassigned Medicare billing, District of Columbia enrollment
- 162 clinicians in this Medicare group
San Diego, CA 92101
- Reassigned Medicare billing, California enrollment
- 291 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 22031 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 William Kimbrough's NPI number?
The NPI number for William Kimbrough is 1821236357. It was assigned to this individual provider in the NPPES registry on January 21, 2009.
Where is William Kimbrough located?
William Kimbrough practices at 2987 District Ave Ste 120, Fairfax, VA 22031. The listed phone number is (888) 663-6331.
What is William Kimbrough's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is William Kimbrough enrolled in Medicare?
Yes. William Kimbrough 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 William Kimbrough's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Kimbrough reassigns Medicare benefits to 2 organizations: One Medstar Primary Care LLC (Washington, DC) and One Medical Group, Inc (San Diego, CA). 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 William Kimbrough's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Kimbrough accept?
Health plans from CareSource list William Kimbrough 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 William Kimbrough was last updated on March 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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. William Harrison Kimbrough, M.D. · NPI 1821236357
Internal Medicine physician in Fairfax, Virginia. Individual provider, active in the CMS NPPES registry since January 21, 2009.
## Identity
- **NPI:** 1821236357 (Entity type: Individual)
- **Enumerated:** January 21, 2009
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 0101260163 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 2987 DISTRICT AVE STE 120, Fairfax, VA 22031-1571
- **Phone:** (888) 663-6331 · **Fax:** (415) 252-7176
## 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): One Medstar Primary Care LLC (NPI 1417571530, Washington, DC); One Medical Group, Inc (NPI 1801666904, San Diego, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Georgetown University School Of Medicine, class of 2006
## Record status
- **NPPES last updated:** March 17, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1821236357) · Data from the CMS NPPES public registry.