KAISER FOUNDATION HEALTH PLAN OF THE MID ATLANTIC STATES, INC
NPI 1225156367
Health Maintenance Organization in Lansdowne, VA

Active since March 27, 2007
19450 DEERFIELD AVE, LANSDOWNE, VA 20176(703) 726-2100(703) 726-4550 Get Directions Write a Review

NPPES record last updated: July 24, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 2, 2024, May 26, 2021 (2 updates tracked since 2021).

About Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc NPPES

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

KAISER FOUNDATION HEALTH PLAN OF THE MID ATLANTIC STATES, INC (NPI 1225156367), doing business as Loudoun Medical Center, is a healthcare organization registered as a health maintenance organization in Lansdowne, Virginia and active in the NPI registry since March 2007. The organization lists Colleen Swinton, Director, Credentialing, as its authorized official.

NPPES Registry Identity

NPI1225156367
Entity TypeOrganization
Primary Taxonomy302R00000X
Legal Business NameKAISER FOUNDATION HEALTH PLAN OF THE MID ATLANTIC STATES, INC
Location Address19450 DEERFIELD AVELansdowne, VA 20176-6820
Mailing Address4000 Garden City DrHyattsville, MD 20785-2418 · (301) 816-2424
Fax(703) 726-4550
Organization SubpartYes
Authorized OfficialColleen SwintonDirector, Credentialing · (301) 257-2797
Enumeration DateMarch 27, 2007
Last NPPES UpdateJuly 24, 20252 updates tracked since enumeration
NPPES CertifiedJuly 24, 2025
✔ NPI 1225156367 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyHealth Maintenance OrganizationManaged Care Organizations
Taxonomy Code302R00000X
Definition
(1) A form of health insurance in which its members prepay a premium for the HMO's health services which generally include inpatient and ambulatory care. For the patient, an HMO means reduced out-of-pocket costs (i.e. no deductible), no paperwork (i.e. insurance forms), and only a small copayment for each office visit to cover the paperwork handled by the HMO; (2) A organization of health care personnel and facilities that provides a comprehensive range of health services to an enrolled population for a fixed sum of money paid in advance for a specified period of time. These health services include a wide variety of medical treatments and consults, inpatient and outpatient hospitalization, home health service, ambulance service, and sometimes dental and pharmacy services. The HMO may be organized as a group model, an individual practice association (IPA), a network model or a staff model.
19450 DEERFIELD AVE, Lansdowne, VA 20176

Other Names 1

Doing Business AsLoudoun Medical Center

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

994

Medicare enrollment records show 994 clinicians reassign Medicare billing to Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc, which bills Medicare for the services they deliver. Of these, 4 practice at this address and 27 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 49

Internal Medicine199
Family Practice114
Diagnostic Radiology86
Anesthesiology79
Emergency Medicine78
Obstetrics/Gynecology75
Pediatric Medicine29
Ophthalmology28
41 other specialties306

Nearest to this location (20)

See all 994
Podiatry
NPI 1225456361
19450 DEERFIELD AVE STE 200
Leesburg, VA 20176
(703) 777-3262
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1073670006
19450 DEERFIELD AVENUE STE 300
Lansdowne, VA 20176
(703) 726-2100
✔ PECOS✔ Accepts MedicareSame address
Obstetrics/Gynecology
NPI 1164590519
19450 DEERFIELD AVE STE 300 LOUDOUN MEDICAL CENTER
Lansdowne, VA 20176
(703) 726-2100
✔ PECOSSame address
Internal Medicine
NPI 1154493641
19450 DEERFIELD AVE
Lansdowne, VA 20176
(703) 726-4500
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1144210295
44055 RIVERSIDE PKWY SUITE 204
Lansdowne, VA 20176
(703) 858-3333
✔ PECOS✔ Accepts Medicare0.2 mi
Interventional Pain Management
NPI 1659349439
44045 RIVERSIDE PKWY
Leesburg, VA 20176
(703) 858-6000
✔ PECOS✔ Accepts Medicare0.3 mi
Sleep Medicine
NPI 1437545720
19441 GOLF VISTA PLAZA, SUITES 230 & 310
Leesburg, VA 20176
(703) 729-3420
✔ PECOS✔ Accepts Medicare0.5 mi
Internal Medicine
NPI 1831520352
19453 XEROX DR
Leesburg, VA 20176
(703) 999-0145
✔ PECOS✔ Accepts Medicare0.7 mi
Family Practice
NPI 1821023920
21022 ROCKY KNOLL SQ APT 105
Ashburn, VA 20147
(571) 442-4674
✔ PECOS✔ Accepts Medicare3.1 mi
Family Practice
NPI 1073585766
21785 FILIGREE CT SUITE 100
Ashburn, VA 20147
(703) 554-1100
✔ PECOS✔ Accepts Medicare4.6 mi
Family Practice
NPI 1538357934
43480 YUKON DR
Ashburn, VA 20147
(571) 252-6000
✔ PECOS✔ Accepts Medicare4.8 mi
Internal Medicine
NPI 1871535302
43480 YUKON DR STE 100 KAISER PERMANENTE ASHBURN MEDICAL CENTER
Ashburn, VA 20147
(571) 252-6000
✔ PECOS✔ Accepts Medicare4.8 mi
Internal Medicine
NPI 1114095528
43480 YUKON DR SUITE 100
Ashburn, VA 20147
(571) 252-6000
✔ PECOS✔ Accepts Medicare4.8 mi
Pediatric Medicine
NPI 1316152200
43480 YUKON DR STE 2200
Ashburn, VA 20147
(703) 359-7878
✔ PECOS4.8 mi
Internal Medicine
NPI 1326109778
43480 YUKON DR # 2200
Ashburn, VA 20147
(571) 252-6000
✔ PECOS4.8 mi
Pediatric Medicine
NPI 1730496415
43480 YUKON DR
Ashburn, VA 20147
(571) 252-6000
✔ PECOS4.8 mi
Internal Medicine
NPI 1225196678
43480 YUKON DR STE 150
Ashburn, VA 20147
(571) 252-6000
✔ PECOS✔ Accepts Medicare4.8 mi
Obstetrics/Gynecology
NPI 1164679866
43480 YUKON DR
Ashburn, VA 20147
(571) 252-6030
✔ PECOS4.8 mi
Family Practice
NPI 1003074428
43480 YUKON DR
Ashburn, VA 20147
(571) 252-6000
✔ PECOS✔ Accepts Medicare4.8 mi
Obstetrics/Gynecology
NPI 1700094422
43480 YUKON DR STE 100
Ashburn, VA 20147
(571) 252-6030
✔ PECOS✔ Accepts Medicare4.8 mi
See all 994 clinicians

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 Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc's NPI number?

The NPI number for Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc is 1225156367. It was assigned to this organization in the NPPES registry on March 27, 2007. The provider is doing business as Loudoun Medical Center.

Where is Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc located?

Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc is located at 19450 Deerfield Ave, Lansdowne, VA 20176. The listed phone number is (703) 726-2100.

What is Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc's specialty?

The primary specialty registered for this NPI is Health Maintenance Organization with taxonomy code 302R00000X.

Is Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc enrolled in Medicare?

Yes. Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 994 clinicians in 49 Medicare specialties reassign their Medicare billing to Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc. 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 (199), Family Practice (114) and Diagnostic Radiology (86). Of these, 4 practice at this address and 27 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 Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc was last updated on July 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 months 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.