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WILLIAM E HAUDA II MD
NPI 1235201336
Pediatrics - Pediatric Emergency Medicine in Falls Church, VA

Active since November 14, 2006PECOS Enrolled
3300 GALLOWS RD STE G190, FALLS CHURCH, VA 22042(703) 776-6666(703) 776-3525 Get Directions Write a Review

NPPES record last updated: March 11, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 11, 2022, Nov 6, 2020 (2 updates tracked since 2020).

About William E Hauda Ii Md NPPES

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

WILLIAM E HAUDA II MD (NPI 1235201336) is an individual pediatric emergency medicine provider in Falls Church, Virginia, licensed in Virginia (0101052317) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1235201336
Entity TypeIndividualMale
Primary Taxonomy2080P0204X
Provider Legal NameWILLIAM E HAUDA IICredential: MD
Location Address3300 GALLOWS RD STE G190Falls Church, VA 22042-3307
Mailing AddressPo Box 37174Baltimore, MD 21297-3174 · (571) 423-5699 · Fax (571) 423-5698
Phone(703) 776-6666
Fax(703) 776-3525
Sole ProprietorNo
Enumeration DateNovember 14, 2006
Last NPPES UpdateMarch 11, 20222 updates tracked since enumeration
NPPES CertifiedMarch 11, 2022
✔ NPI 1235201336 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Emergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080P0204X
License✔ Licensed in VA · 0101052317
Definition
A pediatrician who has special qualifications to manage emergencies in infants and children.
Also ListedEmergency MedicineTaxonomy 207P00000X · License 0101052317 (VA)
3300 GALLOWS RD STE G190, Falls Church, VA 22042
Open in Google Maps ↗

Secondary Practice Locations 3

Location 12671 Avenir Pl Ste AVienna, VA 22180-7485 · Phone (703) 776-6666 · Fax (571) 623-3771
Location 24700 King St Ste 125Alexandria, VA 22302-4420 · Phone (703) 776-6666 · Fax (571) 665-6651
Location 344045 Riverside PkwyLeesburg, VA 20176-5101 · Phone (703) 858-6000 · Fax (703) 858-6900

Other Identifiers 2

Medicaid6060951VA
Other930051786VA · Railroad Medicare

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William E Hauda Ii Md 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 Reassignment

Medicare enrollment records show William Hauda reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Inova Health Care Services
Same address
Internal Medicine
3300 GALLOWS RD, PHYSICIAN SERVICES
Falls Church, VA 22042
  • Reassigned Medicare billing, District of Columbia and Virginia enrollments
  • Also billed through NPI 1588717755 (Virginia)
  • 2,618 clinicians in this Medicare group
NPI 1952320061 (703) 321-2627

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 William Hauda's NPI number?

The NPI number for William Hauda is 1235201336. It was assigned to this individual provider in the NPPES registry on November 14, 2006.

Where is William Hauda located?

William Hauda practices at 3300 Gallows Rd Ste G190, Falls Church, VA 22042. The listed phone number is (703) 776-6666.

What is William Hauda's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Emergency Medicine, with taxonomy code 2080P0204X.

Is William Hauda enrolled in Medicare?

Yes. William Hauda is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for William Hauda's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Hauda reassigns Medicare benefits to Inova Health Care Services (Falls Church, VA). 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 William Hauda's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does William Hauda accept?

Health plans from Oscar Health list William Hauda as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William Hauda was last updated on March 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.