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VANAJA NANDINI ALEXANDER M.D.
NPI 1538496807
Pediatrics - Neonatal-Perinatal Medicine in Arlington, VA

Active since November 06, 2009PECOS Enrolled
3708 5TH ST S, ARLINGTON, VA 22204(703) 403-4672 Get Directions Write a Review

NPPES record last updated: August 3, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Vanaja Nandini Alexander M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

VANAJA NANDINI ALEXANDER M.D. (NPI 1538496807) is an individual neonatal-perinatal medicine provider in Arlington, Virginia, licensed in New York (243433) and active in the NPI registry since November 2009. She is enrolled in Medicare PECOS and maintains a secondary practice location in New Haven.

NPPES Registry Identity

NPI1538496807
Entity TypeIndividualFemale
Primary Taxonomy2080N0001X
Provider Legal NameVANAJA NANDINI ALEXANDERCredential: M.D.
Location Address3708 5TH ST SArlington, VA 22204-1681
Mailing Address25 Adams Ave Unit 215Stamford, CT 06902-3786 · (203) 832-0360
Phone(703) 403-4672
Sole ProprietorNo
Enumeration DateNovember 6, 2009
Last NPPES UpdateAugust 3, 2019
✔ NPI 1538496807 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080N0001X
License✔ Licensed in NY · 243433
Definition
A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.
3708 5TH ST S, Arlington, VA 22204
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Secondary Practice Location 1

Location 120 York StNew Haven, CT 06510-3220 · Phone (203) 688-2320

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Vanaja Nandini Alexander M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

4

Medicare enrollment records show Vanaja Alexander reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Emergency Medicine Associates PA PC
2.3 mi
Emergency Medicine
1701 N GEORGE MASON DR
Arlington, VA 22205
  • Reassigned Medicare billing, District of Columbia enrollment
  • Medicare enrollment name: Emergency Medicine Associates P.A., P.C.
  • 1,150 clinicians in this Medicare group
NPI 1588529887 (330) 493-4443
Medstar Medical Group II LLC
3.4 mi
Critical Care Medicine
3800 RESERVOIR RD NW
Washington, DC 20007
  • Reassigned Medicare billing, District of Columbia enrollment
  • 3,530 clinicians in this Medicare group
NPI 1205562816 (703) 558-1403
Mgmc LLC
3.4 mi
Psychiatry
3800 RESERVOIR RD NW
Washington, DC 20007
  • Reassigned Medicare billing, District of Columbia enrollment
  • 861 clinicians in this Medicare group
NPI 1316949654 (888) 896-1400
Medical Faculty Associates, Inc
3.6 mi
Anesthesiology
2150 PENNSYLVANIA AVE NW, SUITE 10-409A
Washington, DC 20037
  • Reassigned Medicare billing, District of Columbia enrollment
  • 1,275 clinicians in this Medicare group
NPI 1417990581 (202) 741-3350

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Vanaja Alexander's NPI number?

The NPI number for Vanaja Alexander is 1538496807. It was assigned to this individual provider in the NPPES registry on November 6, 2009.

Where is Vanaja Alexander located?

Vanaja Alexander practices at 3708 5th St S, Arlington, VA 22204. The listed phone number is (703) 403-4672.

What is Vanaja Alexander's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Is Vanaja Alexander enrolled in Medicare?

Yes. Vanaja Alexander is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Vanaja Alexander's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Vanaja Alexander reassigns Medicare benefits to 4 organizations: Emergency Medicine Associates PA PC (Arlington, VA), Medstar Medical Group II LLC (Washington, DC), Mgmc LLC (Washington, DC) and Medical Faculty Associates, Inc (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 Vanaja Alexander'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 Vanaja Alexander was last updated on August 3, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.