ARUNA S. NATHAN MD
NPI 1063437804
Internal Medicine in Greenbelt, MD
About Aruna S. Nathan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ARUNA S. NATHAN MD (NPI 1063437804) is an individual internal medicine provider in Greenbelt, Maryland, licensed in Maryland (D0053615) and active in the NPI registry since July 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)
Aruna S. Nathan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Aruna Nathan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Baltimore, MD 21224
- Reassigned Medicare billing, Maryland enrollment
- Medicare enrollment name: Baltimore Medical System, Inc.
- 243 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 20770 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.
Reported Quality Measures
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GREENBELT, MD 20770
GREENBELT, MD 20770
GREENBELT, MD 20770
GREENBELT, MD 20770
GREENBELT, MD 20770
GREENBELT, MD 20770
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 Nathan's NPI number?
The NPI number for Aruna Nathan is 1063437804. It was assigned to this individual provider in the NPPES registry on July 13, 2006.
Where is Aruna Nathan located?
Aruna Nathan practices at 7501 Greenway Center Dr Ste 600, Greenbelt, MD 20770. The listed phone number is (301) 579-3465.
What is Aruna Nathan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Aruna Nathan enrolled in Medicare?
Yes. Aruna Nathan is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Aruna Nathan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Aruna Nathan reassigns Medicare benefits to Baltimore Medical Systems, Inc. (Baltimore, MD). The 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 Nathan'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 Nathan was last updated on January 24, 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.
# Aruna S. Nathan, MD · NPI 1063437804
Internal Medicine physician in Greenbelt, Maryland. Individual provider, active in the CMS NPPES registry since July 13, 2006.
## Identity
- **NPI:** 1063437804 (Entity type: Individual)
- **Enumerated:** July 13, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** D0053615 (Maryland)
- **Sole proprietor:** No
## Practice location
- **Address:** 7501 GREENWAY CENTER DR STE 600, Greenbelt, MD 20770-6704
- **Phone:** (301) 579-3465
## 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:** Baltimore Medical Systems, Inc. (NPI 1164138152, Baltimore, MD), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** January 24, 2023
- **Other identifiers:** Other 1063437804; Medicaid 326300200 (MD)
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Source: [NPI Profile](https://npiprofile.com/npi/1063437804) · Data from the CMS NPPES public registry.