1. Home
  2. Directory
  3. Maryland
  4. Gaithersburg
  5. Emergency Medicine
  6. NPI Profile

DR. LOUISETTE VEGA
NPI 1881639243
Emergency Medicine in Gaithersburg, MD

Active since June 19, 2006PECOS EnrolledAccepts Medicare Assignment
655 WATKINS MILL RD, GAITHERSBURG, MD 20879(202) 374-8819 Get Directions Write a Review

NPPES record last updated: February 17, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Sep 11, 2025, Sep 6, 2025, Jul 25, 2024 (3 updates tracked since 2024).

About Dr. Louisette Vega NPPES

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

DR. LOUISETTE VEGA (NPI 1881639243) is an individual emergency medicine provider in Gaithersburg, Maryland, licensed in Maryland (D0063086) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS, maintains 7 additional practice locations, and is a graduate of Rutgers, Robert Woood Johnson Medical School (2002).

NPPES Registry Identity

NPI1881639243
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameDR. LOUISETTE VEGA
Location Address655 WATKINS MILL RDGaithersburg, MD 20879-3301
Mailing Address7205 Cliff Pine DrGaithersburg, MD 20879-5703 · (202) 374-8819
Phone(202) 374-8819
Sole ProprietorNo
Medical School CMSRutgers, Robert Woood Johnson Medical SchoolGraduated 2002
Enumeration DateJune 19, 2006
Last NPPES UpdateFebruary 17, 20263 updates tracked since enumeration
NPPES CertifiedFebruary 17, 2026
✔ NPI 1881639243 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Licenses✔ Licensed in MD · D0063086✔ Licensed in GA · 105536✔ Licensed in NC · 2025-01244✔ Licensed in VA · 0101282740
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
655 WATKINS MILL RD, Gaithersburg, MD 20879
Open in Google Maps ↗

Secondary Practice Locations 7

Location 15960 Fairview Rd Ste 300&400Charlotte, NC 28210-3102 · Phone (202) 374-8819
Location 26802 Paragon Pl Ste 410Richmond, VA 23230-1655 · Phone (202) 374-8819
Location 3260 Peachtree St NW Ste 2200Atlanta, GA 30303-1292 · Phone (202) 374-8819
Location 4999 Waterside Dr Ste 2600Norfolk, VA 23510-3300 · Phone (202) 374-8819
Location 51506 E Franklin St Ste 300Chapel Hill, NC 27514-2825 · Phone (202) 374-8819
Location 6100 Bull St Ste 200Savannah, GA 31401-3378 · Phone (202) 374-8819
Location 711810 Grand Park Ave Ste 500North Bethesda, MD 20852-8679 · Phone (202) 374-8819

Other Identifiers 1

Medicaid408748800MD

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Louisette Vega is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4183649684
PECOS Enrollment IDI20051013000679, I20120807000656, I20241025003671
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 Reassignments

2

Medicare enrollment records show Louisette Vega reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc
Same address
Health Maintenance Organization
655 WATKINS MILL RD
Gaithersburg, MD 20879
NPI 1831471713 (301) 258-7700
Emergency Medicine Associates P.A., P.C.
15 mi
Emergency Medicine
11901 BARON CAMERON AVE
Reston, VA 20190
  • Reassigned Medicare billing, District of Columbia enrollment
  • 1,150 clinicians in this Medicare group
NPI 1811852148 (330) 493-4443

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with moderate level of medical decision making 99284
An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.
31 services31 patients
Emergency department visit with high level of medical decision making 99285
An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.
23 services23 patients
Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
13 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20879 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
$100.31 typical visit price
range $65.18 – $194.86
Typical copayment $25.07 (range $16.29 – $48.71)
Most-billed visit code 99203
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.

DR. ESTHER SHINYOUNG SONG M.D.
Pediatrics
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (240) 632-4000
DR. VICTOR DAVID ELLIS III MD
Student in an Organized Health Care Education/Training Program
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (240) 632-4000
DR. PETER JAN BLUVAS JR. M.D.
Emergency Medicine
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (406) 324-2242
YOGESH PARUTHI
Pharmacist
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (240) 632-4155
ILYSSA KAREN HAAR RN, IBCLC, BSN
Registered Nurse (Lactation Consultant)
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (240) 632-4333
HAOBO ZHOU MD
General Acute Care Hospital
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (240) 632-4075
MR. SCOTT ERIC JACKSON RT(R)(CT)
Radiologic Technologist (Computed Tomography)
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (240) 632-4418
KATIE MARIE ESSER
Audiologist
655 WATKINS MILL RD
GAITHERSBURG, MD 20879
Montgomery County (240) 632-4000

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 Louisette Vega's NPI number?

The NPI number for Louisette Vega is 1881639243. It was assigned to this individual provider in the NPPES registry on June 19, 2006.

Where is Louisette Vega located?

Louisette Vega practices at 655 Watkins Mill Rd, Gaithersburg, MD 20879. The listed phone number is (202) 374-8819.

What is Louisette Vega's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Louisette Vega enrolled in Medicare?

Yes. Louisette Vega is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Louisette Vega's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Louisette Vega reassigns Medicare benefits to 2 organizations: Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Gaithersburg, MD) and Emergency Medicine Associates P.A., P.C. (Reston, VA). Each 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 Louisette Vega's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Louisette Vega was last updated on February 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.