1. Home
  2. Directory
  3. Virginia
  4. Chantilly
  5. Internal Medicine
  6. NPI Profile

ANNANDALE MEDICAL ASSOCIATES PC
NPI 1861616310
Internal Medicine in Chantilly, VA

Active since April 13, 2007
4229 LAFAYETTE CENTER DRIVE, SUITE #1790, CHANTILLY, VA 20151(703) 378-3508(703) 378-6414 Get Directions Write a Review

NPPES record last updated: February 28, 2012. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Annandale Medical Associates Pc NPPES

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

ANNANDALE MEDICAL ASSOCIATES PC (NPI 1861616310) is a healthcare organization registered as an internal medicine in Chantilly, Virginia and active in the NPI registry since April 2007. The organization lists Ingrid Insook Chung, Md, as its authorized official.

NPPES Registry Identity

NPI1861616310
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameANNANDALE MEDICAL ASSOCIATES PC
Location Address4229 LAFAYETTE CENTER DRIVE, SUITE #1790Chantilly, VA 20151-1267
Mailing AddressPo Box 9302Mc Lean, VA 22102-0302 · (703) 378-3508 · Fax (703) 378-6414
Phone(703) 378-3508
Fax(703) 378-6414
Organization SubpartNo
Authorized OfficialIngrid Insook ChungMd · (703) 378-3508
Enumeration DateApril 13, 2007
Last NPPES UpdateFebruary 28, 2012
✔ NPI 1861616310 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in VA · 0101049525
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.
4229 LAFAYETTE CENTER DRIVE, Chantilly, VA 20151
Open in Google Maps ↗

Other Identifiers 8

Other4528765VA · Aetna
Medicare UPINF74425VA
Other461868VA · Aetna
Other3100539VA · Allance Ppo/mamsi
Other136631VA · Ptan
Other38080001VA · Bcbs-carefirst
Other463068VA · Bcbs-anthem
Medicare PINCH752738VA

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Annandale Medical Associates Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by January 31, 2027

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateDistrict of ColumbiaEnrollment IDO20081107000498Non-DME Part B · Clinic/Group PracticeDue dateJanuary 31, 2027
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Annandale Medical Associates PC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Ingrid Chung, MD
Internal Medicine
NPI 1073622742
4229 LAFAYETTE CENTER DRIVE SUITE #1790
Chantilly, VA 20151
(703) 378-3508
✔ PECOS✔ Accepts MedicareSame address

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 Annandale Medical Associates PC's NPI number?

The NPI number for Annandale Medical Associates PC is 1861616310. It was assigned to this organization in the NPPES registry on April 13, 2007.

Where is Annandale Medical Associates PC located?

Annandale Medical Associates PC is located at 4229 Lafayette Center Drive Suite #1790, Chantilly, VA 20151. The listed phone number is (703) 378-3508.

What is Annandale Medical Associates PC's specialty?

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

Is Annandale Medical Associates PC enrolled in Medicare?

Yes. Annandale Medical Associates PC is registered in the Medicare PECOS enrollment system.

When is Annandale Medical Associates PC's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (District of Columbia, Clinic/Group Practice) is due for revalidation by January 31, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Annandale Medical Associates PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Annandale Medical Associates PC. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Annandale Medical Associates PC was last updated on February 28, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.