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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

EAST-WEST RHEUMATOLOGY, PLLC
NPI 1043854938
Internal Medicine - Rheumatology in Vienna, VA

Active since November 04, 2019
124 PARK ST SE STE 205, VIENNA, VA 22180(703) 372-2646(703) 828-0255 Get Directions Write a Review

NPPES record last updated: September 15, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Sep 15, 2026, Aug 22, 2022, Nov 16, 2020 and 2 more (5 updates tracked since 2019).

About East-west Rheumatology, Pllc NPPES

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

EAST-WEST RHEUMATOLOGY, PLLC (NPI 1043854938) is a healthcare organization registered as a rheumatology in Vienna, Virginia and active in the NPI registry since November 2019. The organization lists Yousef Zarbalian, Founder, as its authorized official.

NPPES Registry Identity

NPI1043854938
Entity TypeOrganization
Primary Taxonomy207RR0500X
Legal Business NameEAST-WEST RHEUMATOLOGY, PLLC
Location Address124 PARK ST SE STE 205Vienna, VA 22180-4654
Mailing Address124 Park St Se Ste 205Vienna, VA 22180-4654 · (703) 372-2646 · Fax (703) 828-0255
Phone(703) 372-2646
Fax(703) 828-0255
Organization SubpartNo
Authorized OfficialYousef ZarbalianFounder · (703) 372-2646
Enumeration DateNovember 4, 2019
Last NPPES UpdateSeptember 15, 20265 updates tracked since enumeration
NPPES CertifiedSeptember 15, 2026
✔ NPI 1043854938 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
124 PARK ST SE STE 205, Vienna, VA 22180
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Other Identifiers 2

OtherD0076539MD · State Medical License Number
Other0101260444VA · State Medical License Number

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

YOUSEF ZARBALIAN M.D.
Internal Medicine (Rheumatology)
124 PARK ST SE STE 205
VIENNA, VA 22180
Fairfax County (225) 229-0325

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 East-West Rheumatology, PLLC's NPI number?

The NPI number for East-West Rheumatology, PLLC is 1043854938. It was assigned to this organization in the NPPES registry on November 4, 2019.

Where is East-West Rheumatology, PLLC located?

East-West Rheumatology, PLLC is located at 124 Park St SE Ste 205, Vienna, VA 22180. The listed phone number is (703) 372-2646.

What is East-West Rheumatology, PLLC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

When was this NPI record last updated?

The NPPES record for East-West Rheumatology, PLLC was last updated on September 15, 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.