DR. KAREN M DIXON MD
NPI 1932135761
Emergency Medicine in Largo, MD
About Dr. Karen M Dixon Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KAREN M DIXON MD (NPI 1932135761) is an individual emergency medicine provider in Largo, Maryland, licensed in Maryland (D63171) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS and maintains a secondary practice location in Woodbridge.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 4
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Karen M Dixon Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Karen Dixon reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Alexandria, VA 22301
- Reassigned Medicare billing, District of Columbia enrollment
- 135 clinicians in this Medicare group
Waldorf, MD 20603
- Reassigned Medicare billing, District of Columbia enrollment
- 2,618 clinicians in this Medicare group
Rockville, MD 20850
- Reassigned Medicare billing, District of Columbia enrollment
- 251 clinicians in this Medicare group
Norfolk, VA 23502
- Reassigned Medicare billing, Virginia enrollment
- 1,901 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 20774 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LARGO, MD 20774
LARGO, MD 20774
LARGO, MD 20774
LARGO, MD 20774
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 Karen Dixon's NPI number?
The NPI number for Karen Dixon is 1932135761. It was assigned to this individual provider in the NPPES registry on June 23, 2006.
Where is Karen Dixon located?
Karen Dixon practices at 1221 Mercantile Ln Kaiser Permanente Largo Medical Center, Largo, MD 20774. The listed phone number is (301) 618-5500.
What is Karen Dixon's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Karen Dixon enrolled in Medicare?
Yes. Karen Dixon is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Karen Dixon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Dixon reassigns Medicare benefits to 4 organizations: Alexandria Springfield Emergency Physicians PC (Alexandria, VA), Inova Health Care Services (Waldorf, MD), Mep Health, LLC (Rockville, MD) and Sentara Medical Group (Norfolk, VA). 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 Karen Dixon'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 Karen Dixon was last updated on October 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 days 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. Karen M Dixon, MD · NPI 1932135761
Emergency Medicine physician in Largo, Maryland. Individual provider, active in the CMS NPPES registry since June 23, 2006.
## Identity
- **NPI:** 1932135761 (Entity type: Individual)
- **Enumerated:** June 23, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** D63171 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 1221 MERCANTILE LN, KAISER PERMANENTE LARGO MEDICAL CENTER, Largo, MD 20774-5374
- **Phone:** (301) 618-5500
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Alexandria Springfield Emergency Physicians PC (NPI 1285454900, Alexandria, VA); Inova Health Care Services (NPI 1851829550, Waldorf, MD); Mep Health, LLC (NPI 1164483558, Rockville, MD); Sentara Medical Group (NPI 1265485270, Norfolk, VA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 13, 2026
- **Other identifiers:** Other H9140014 (DC); Medicaid 036757300 (DC); Medicaid 407964700 (MD); and 1 more
---
Source: [NPI Profile](https://npiprofile.com/npi/1932135761) · Data from the CMS NPPES public registry.