ARUNA NATARAJAN
NPI 1164410437
Pediatrics - Pediatric Critical Care Medicine in Washington, DC
About Aruna Natarajan NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ARUNA NATARAJAN (NPI 1164410437) is an individual pediatric critical care medicine provider in Washington, District Of Columbia, licensed in District Of Columbia (31673) and active in the NPI registry since October 2005. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Aruna Natarajan is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Aruna Natarajan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20007
- Reassigned Medicare billing, District of Columbia enrollment
- 3,530 clinicians in this Medicare group
Washington, DC 20007
- Reassigned Medicare billing, District of Columbia enrollment
- 861 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.
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 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
WASHINGTON, DC 20007
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 Aruna Natarajan's NPI number?
The NPI number for Aruna Natarajan is 1164410437. It was assigned to this individual provider in the NPPES registry on October 11, 2005.
Where is Aruna Natarajan located?
Aruna Natarajan practices at 3800 Reservoir Rd NW, Washington, DC 20007. The listed phone number is (202) 444-2468.
What is Aruna Natarajan's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.
Is Aruna Natarajan enrolled in Medicare?
Yes. Aruna Natarajan is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Aruna Natarajan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Aruna Natarajan reassigns Medicare benefits to 2 organizations: Medstar Medical Group II LLC (Washington, DC) and Mgmc LLC (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 Aruna Natarajan'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 Aruna Natarajan was last updated on February 29, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Aruna Natarajan · NPI 1164410437
Pediatric Critical Care Medicine physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since October 11, 2005.
## Identity
- **NPI:** 1164410437 (Entity type: Individual)
- **Enumerated:** October 11, 2005
- **Primary specialty:** Pediatrics - Pediatric Critical Care Medicine · taxonomy 2080P0203X
- **State license:** 31673 (District of Columbia)
- **Sole proprietor:** No
## Practice location
- **Address:** 3800 RESERVOIR RD NW, Washington, DC 20007-2113
- **Phone:** (202) 444-2468
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Medstar Medical Group II LLC (NPI 1205562816, Washington, DC); Mgmc LLC (NPI 1316949654, Washington, DC) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 29, 2008
- **Other identifiers:** Medicare UPIN G16882; Medicare PIN 000S83G65 (DC); Other 370016701
---
Source: [NPI Profile](https://npiprofile.com/npi/1164410437) · Data from the CMS NPPES public registry.