DR. MARIAM E YOUSSEF M.D.
NPI 1083731434
Hospitalist in Falls Church, VA

Q: What is Mariam Youssef's NPI number?

The NPI number for Mariam Youssef is 1083731434. It was assigned to this individual provider in the NPPES registry on March 23, 2007.

Q: What is Mariam Youssef's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Q: When was this NPI record last updated?

The NPPES record for Mariam Youssef was last updated on July 31, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.

Active since March 23, 2007PECOS Enrolled

3300 GALLOWS RD, FALLS CHURCH, VA 22042(703) 776-6558(703) 776-3503 Get Directions Write a Review

NPPES record last updated: July 31, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About Dr. Mariam E Youssef M.d. NPPES

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

DR. MARIAM E YOUSSEF M.D. (NPI 1083731434) is an individual hospitalist provider in Falls Church, Virginia, licensed in Virginia (0101260714) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1083731434

Entity TypeIndividualFemale

Primary Taxonomy208M00000X

Provider Legal NameDR. MARIAM E YOUSSEFCredential: M.D.

Location Address3300 GALLOWS RDFalls Church, VA 22042

Mailing Address3300 Gallows RdFalls Church, VA 22042-3307

Phone(703) 776-6558

Fax(703) 776-3503

Sole ProprietorNo

Enumeration DateMarch 23, 2007

Last NPPES UpdateJuly 31, 2018

✔ NPI 1083731434 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians

Taxonomy Code208M00000X

License✔ Licensed in VA · 0101260714

Definition

Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.

Also ListedPediatricsTaxonomy 208000000X · License C7-0003292 (DE), MT186689 (PA), MD438772 (PA)

3300 GALLOWS RD, Falls Church, VA 22042

Open in Google Maps ↗

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)

Dr. Mariam E Youssef 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 Reassignment

Medicare enrollment records show Mariam Youssef 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22042 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$147.85 typical visit price

range $65.18 – $194.86

Typical copayment $36.96 (range $16.29 – $48.71)

Most-billed visit code 99204

Established Patient

$113.72 typical visit price

range $21.40 – $158.88

Typical copayment $28.43 (range $5.35 – $39.72)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

ALLISON ELIZABETH TWEEDIE MD

Psychiatry & Neurology (Psychiatry)