KAISER FOUNDATION HEALTH PLAN OF THE MID ATLANTIC STATES, INC
NPI 1366781700
Clinic/Center - Ambulatory Surgical in Largo, MD

Active since February 05, 2013
1221 MERCANTILE LN, LARGO, MD 20774(301) 618-5500 Get Directions Write a Review

NPPES record last updated: July 24, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 9, 2025, Jan 25, 2023, May 26, 2021 (3 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 1366781700), doing business as Kaiser Permanente Largo Ambulatory Surgery Center, is a healthcare organization registered as an ambulatory surgical in Largo, Maryland and active in the NPI registry since February 2013. The organization lists Colleen Swinton, Director, Credentialing, as its authorized official.

NPPES Registry Identity

NPI1366781700
Entity TypeOrganization
Primary Taxonomy261QA1903X
Legal Business NameKAISER FOUNDATION HEALTH PLAN OF THE MID ATLANTIC STATES, INC
Location Address1221 MERCANTILE LNLargo, MD 20774-5374
Mailing Address4000 Garden City DrHyattsville, MD 20785-2418 · (301) 816-2424
Organization SubpartYes
Authorized OfficialColleen SwintonDirector, Credentialing · (301) 257-2797
Enumeration DateFebruary 5, 2013
Last NPPES UpdateJuly 24, 20253 updates tracked since enumeration
NPPES CertifiedJuly 24, 2025
✔ NPI 1366781700 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Ambulatory SurgicalAmbulatory Health Care Facilities
Taxonomy Code261QA1903X
1221 MERCANTILE LN, Largo, MD 20774

Other Names 1

Doing Business AsKaiser Permanente Largo Ambulatory Surgery 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

750

Medicare enrollment records show 750 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, 44 practice at this address and 118 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 36

Obstetrics/Gynecology146
Anesthesiology133
Internal Medicine77
Emergency Medicine53
Ophthalmology46
Orthopedic Surgery36
General Surgery33
Otolaryngology29
28 other specialties197

Nearest to this location (20)

See all 750
Gastroenterology
NPI 1851719777
1221 MERCANTILE LN
Upper Marlboro, MD 20774
(301) 618-5500
✔ PECOS✔ Accepts MedicareSame address
Urology
NPI 1033383781
1221 MERCANTILE LN KAISER PERMANENTE DEPARTMENT OF UROLOGY
Largo, MD 20774
(301) 618-5500
✔ PECOS✔ Accepts MedicareSame address
Cardiovascular Disease (Cardiology)
NPI 1487017604
1221 MERCANTILE LN
Largo, MD 20774
(301) 821-6753
✔ PECOS✔ Accepts MedicareSame address
Cardiovascular Disease (Cardiology)
NPI 1982770194
1221 MERCANTILE LANE
Largo, MD 20774
(301) 618-5578
✔ PECOS✔ Accepts MedicareSame address
Anesthesiology
NPI 1912224700
1221 MERCANTILE LN
Largo, MD 20774
(301) 618-5936
✔ PECOS✔ Accepts MedicareSame address
Obstetrics/Gynecology
NPI 1164580122
1221 MERCANTILE LN KAISER PERMANENTE LARGO MEDICAL CENTER
Largo, MD 20774
(301) 618-5500
✔ PECOSSame address
Anesthesiology
NPI 1134532633
1221 MERCANTILE LN
Largo, MD 20774
(202) 507-0511
✔ PECOS✔ Accepts MedicareSame address
Orthopedic Surgery
NPI 1134391469
1221 MERCANTILE LN
Upper Marlboro, MD 20774
(301) 618-5595
✔ PECOS✔ Accepts MedicareSame address
General Surgery
NPI 1750510228
1221 MERCANTILE LN KAISER PERMANENTE LARGO MEDICAL CENTER
Largo, MD 20774
(301) 618-5500
✔ PECOS✔ Accepts MedicareSame address
Urology
NPI 1790027100
1221 MERCANTILE LN
Upper Marlboro, MD 20774
(301) 618-5633
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1932689007
1221 MERCANTILE LN
Upper Marlboro, MD 20774
(202) 251-7453
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1588443931
1221 MERCANTILE LN
Upper Marlboro, MD 20774
(301) 368-6718
✔ PECOS✔ Accepts MedicareSame address
Otolaryngology
NPI 1366619231
1221 MERCANTILE LANE KAISER PERMANENTE LARGO MEDICAL CENTER
Upper Marlboro, MD 20774
(917) 992-1060
✔ PECOS✔ Accepts MedicareSame address
Hematology/Oncology
NPI 1629464904
1221 MERCANTILE LN
Upper Marlboro, MD 20774
(301) 618-5500
✔ PECOS✔ Accepts MedicareSame address
Obstetrics/Gynecology
NPI 1306105093
1221 MERCANTILE LN
Upper Marlboro, MD 20774
(717) 812-4602
✔ PECOS✔ Accepts MedicareSame address
Medical Oncology
NPI 1639639792
1221 MERCANTILE LN
Upper Marlboro, MD 20774
(301) 618-5500
✔ PECOS✔ Accepts MedicareSame address
Ophthalmology
NPI 1245390749
1221 MERCANTILE LANE
Largo, MD 20774
(301) 618-5500
✔ PECOSSame address
Cardiac Electrophysiology
NPI 1295911493
1221 MERCANTILE LN
Upper Marlboro, MD 20774
(301) 618-5620
✔ PECOS✔ Accepts MedicareSame address
Internal Medicine
NPI 1457424707
1221 MERCANTILE LANE
Largo, MD 20774
(301) 618-5578
✔ PECOS✔ Accepts MedicareSame address
Pain Management
NPI 1730455155
1221 MERCANTILE LN
Upper Marlboro, MD 20774
(703) 359-7878
✔ PECOS✔ Accepts MedicareSame address
See all 750 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 1366781700. It was assigned to this organization in the NPPES registry on February 5, 2013. The provider is doing business as Kaiser Permanente Largo Ambulatory Surgery 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 1221 Mercantile Ln, Largo, MD 20774. The listed phone number is (301) 618-5500.

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

The primary specialty registered for this NPI is Clinic/Center, specializing in Ambulatory Surgical, with taxonomy code 261QA1903X.

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), 750 clinicians in 36 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 Obstetrics/Gynecology (146), Anesthesiology (133) and Internal Medicine (77). Of these, 44 practice at this address and 118 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 14 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.