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ALLIANCE MEDICAL GROUP
NPI 1457943987
Internal Medicine in Springfield, VA

Active since February 05, 2021
8013 COLORADO SPRINGS DR, SPRINGFIELD, VA 22153(571) 430-5951 Get Directions Write a Review

NPPES record last updated: February 5, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Alliance Medical Group NPPES

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

ALLIANCE MEDICAL GROUP (NPI 1457943987) is a healthcare organization registered as an internal medicine in Springfield, Virginia and active in the NPI registry since February 2021. The organization lists Derek Mercer, Credentialing Specialist, as its authorized official.

NPPES Registry Identity

NPI1457943987
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameALLIANCE MEDICAL GROUP
Location Address8013 COLORADO SPRINGS DRSpringfield, VA 22153-2751
Mailing Address8013 Colorado Springs DrSpringfield, VA 22153-2751 · (571) 430-5951
Phone(571) 430-5951
Organization SubpartNo
Authorized OfficialDerek MercerCredentialing Specialist · (571) 430-5951
Enumeration DateFebruary 5, 2021
NPPES CertifiedFebruary 5, 2021
✔ NPI 1457943987 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
8013 COLORADO SPRINGS DR, Springfield, VA 22153
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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

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alliance Medical Group is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Alliance Medical Group, which bills Medicare for the services they deliver. Of these, 1 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (4)

Shahzad Haider, M.D.
Internal Medicine
NPI 1619260379
2300 OPITZ BLVD STE G-209
Woodbridge, VA 22191
(703) 523-0611
✔ PECOS✔ Accepts Medicare8.0 mi
Wesam Moustafa Hussein, M.D.
Internal Medicine
NPI 1043539919
13326 HORSEPEN WOODS LANE
Herndon, VA 20171
(609) 335-6595
✔ PECOS✔ Accepts Medicare16 mi
Kourosh Houdsony, MD
Internal Medicine
NPI 1255578506
3001 HOSPITAL DR
Cheverly, MD 20785
(301) 618-3772
✔ PECOS✔ Accepts Medicare21 mi
Yasser Khoudeir, MD, FACP
Hospitalist
NPI 1568430817
2010 HEALTH CAMPUS DR
Rockingham, VA 22801
(540) 689-1110
✔ PECOS✔ Accepts Medicare91 mi

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 Alliance Medical Group's NPI number?

The NPI number for Alliance Medical Group is 1457943987. It was assigned to this organization in the NPPES registry on February 5, 2021.

Where is Alliance Medical Group located?

Alliance Medical Group is located at 8013 Colorado Springs Dr, Springfield, VA 22153. The listed phone number is (571) 430-5951.

What is Alliance Medical Group's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Alliance Medical Group enrolled in Medicare?

Yes. Alliance Medical Group is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Alliance Medical Group?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to Alliance Medical Group. A 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 the clinician's services. The largest specialties are Internal Medicine (3) and Hospitalist (1). Of these, 1 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Alliance Medical Group was last updated on February 5, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.