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ALEXIS L. WILLIAMS MSPA-C
NPI 1285906388
Physician Assistant in Sterling, VA

Active since February 03, 2012PECOS Enrolled
21475 RIDGETOP CIR, SUITE 150, STERLING, VA 20166(703) 444-5000(703) 444-4999 Get Directions Write a Review

NPPES record last updated: February 3, 2012. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Alexis L. Williams Mspa-c NPPES

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

ALEXIS L. WILLIAMS MSPA-C (NPI 1285906388) is an individual physician assistant in Sterling, Virginia, licensed in Virginia (0110003784) and active in the NPI registry since February 2012. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1285906388
Entity TypeIndividualFemale
Primary Taxonomy363A00000X
Provider Legal NameALEXIS L. WILLIAMSCredential: MSPA-C
Location Address21475 RIDGETOP CIR, SUITE 150Sterling, VA 20166-6580
Mailing Address21475 Ridgetop Cir, Suite 150Sterling, VA 20166-6580 · (703) 444-5000 · Fax (703) 444-4999
Phone(703) 444-5000
Fax(703) 444-4999
Sole ProprietorNo
Enumeration DateFebruary 3, 2012
✔ NPI 1285906388 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPhysician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363A00000X
License✔ Licensed in VA · 0110003784
Definition

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

21475 RIDGETOP CIR, Sterling, VA 20166
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alexis L. Williams Mspa-c is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20166 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
$86.88 typical visit price
range $56.19 – $170.30
Typical copayment $21.72 (range $14.04 – $42.57)
Most-billed visit code 99203
Established Patient
$70.08 typical visit price
range $18.07 – $138.91
Typical copayment $17.52 (range $4.51 – $34.72)
Most-billed visit code 99213
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. LYNNFORD S WILSON M.D.
Orthopaedic Surgery
21475 RIDGETOP CIR, SUITE 150
STERLING, VA 20166
Loudoun County (703) 444-5000
DR. JANET M BAKER M.D.
Orthopaedic Surgery
21475 RIDGETOP CIR, STE 150
STERLING, VA 20166
Loudoun County (703) 444-5000
MRS. LYANNA KWOK DPT
Physical Therapist
21475 RIDGETOP CIR
STERLING, VA 20166
Loudoun County (703) 433-0401
DR. DATTATHRI B MALYAVANTHAM DDS
Dentist (General Practice)
21475 RIDGETOP CIR, SUITE 230
STERLING, VA 20166
Loudoun County (703) 444-9900
NICOLE R HAMPTON PTA
Physical Therapy Assistant
21475 RIDGETOP CIR, SUITE 100
STERLING, VA 20166
Loudoun County (703) 433-2500
MORRISA R. FRANCIS MOT, OTR L
Occupational Therapist (Hand)
21475 RIDGETOP CIR, #340
STERLING, VA 20166
Loudoun County (703) 430-6322
DR. CARMEN LUZ PASTOR M.D.
Internal Medicine (Endocrinology, Diabetes & Metabolism)
21475 RIDGETOP CIR, SUITE 350
STERLING, VA 20166
Loudoun County (703) 430-6211
DR. ANTONIO PASTOR M.D.
Internal Medicine (Infectious Disease)
21475 RIDGETOP CIR, SUITE 350
STERLING, VA 20166
Loudoun County (703) 430-6211

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 Alexis Williams's NPI number?

The NPI number for Alexis Williams is 1285906388. It was assigned to this individual provider in the NPPES registry on February 3, 2012.

Where is Alexis Williams located?

Alexis Williams practices at 21475 Ridgetop Cir Suite 150, Sterling, VA 20166. The listed phone number is (703) 444-5000.

What is Alexis Williams's specialty?

The primary specialty registered for this NPI is Physician Assistant with taxonomy code 363A00000X.

Is Alexis Williams enrolled in Medicare?

Yes. Alexis Williams is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Alexis Williams was last updated on February 3, 2012. NPI Profile syncs with the weekly NPPES data releases published by CMS.