WILLIAM CHARLES THOMAS RN
NPI 1548158785
Nurse Anesthetist, Certified Registered in Arlington, VA

Q: What is William Thomas's NPI number?

The NPI number for William Thomas is 1548158785. It was assigned to this individual provider in the NPPES registry on June 26, 2025.

Q: What is William Thomas's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Q: When was this NPI record last updated?

The NPPES record for William Thomas was last updated on June 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since June 26, 2025Accepts Medicare Assignment

1701 N GEORGE MASON DR STE 2D, ARLINGTON, VA 22205(703) 558-2438 Get Directions Write a Review

NPPES record last updated: June 16, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

On this page

About William Charles Thomas Rn NPPES

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

WILLIAM CHARLES THOMAS RN (NPI 1548158785) is an individual nurse anesthetist, certified registered in Arlington, Virginia, licensed in Maryland (R275678) and active in the NPI registry since June 2025. He is affiliated with Virginia Hospital Center and is a graduate of Other (2025).

NPPES Registry Identity

NPI1548158785

Entity TypeIndividualMale

Primary Taxonomy367500000X

Provider Legal NameWILLIAM CHARLES THOMASCredential: RN

Location Address1701 N GEORGE MASON DR STE 2DArlington, VA 22205-3610

Mailing Address2307 N Cleveland AveChicago, IL 60614-3315 · (860) 895-3252

Phone(703) 558-2438

Sole ProprietorNo

Medical School CMSOtherGraduated 2025

Enumeration DateJune 26, 2025

Last NPPES UpdateJune 16, 2026

NPPES CertifiedJune 16, 2026

✔ NPI 1548158785 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code367500000X

License✔ Licensed in MD · R275678

Definition

(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.

1701 N GEORGE MASON DR STE 2D, Arlington, VA 22205

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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

William Charles Thomas Rn 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 ID8628563921

PECOS Enrollment IDI20251224000529, I20260406002276

Medicare Billing Reassignments

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

Dominion Anesthesia, PLLC

Same address

Anesthesiology

1701 N GEORGE MASON DR # DR.2D
Arlington, VA 22205

Reassigned Medicare billing, District of Columbia enrollment
158 clinicians in this Medicare group

NPI 1073554952 (888) 276-1910

Columbia Outpatient Sedation LLC

25 mi

Anesthesiology

7120 MINSTREL WAY, STE 100
Columbia, MD 21045

Reassigned Medicare billing, District of Columbia and Maryland enrollments
86 clinicians in this Medicare group

NPI 1588921225 (410) 290-6677

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

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Virginia Hospital Center

Acute Care Hospitals · Arlington, VA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number490050

Location1701 North George Mason DriveArlington, VA 22205 · Arlington County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22205 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

$147.85 typical visit price

range $65.18 – $194.86

Typical copayment $36.96 (range $16.29 – $48.71)

Most-billed visit code 99204

Established Patient

$80.66 typical visit price

range $21.40 – $158.88

Typical copayment $20.16 (range $5.35 – $39.72)

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 16

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. KRUPA BIPIN PATEL M.D.

Anesthesiology