MR. WILLIAM J BARKER MD
NPI 1770599847
Emergency Medicine - Emergency Medical Services in Warrenton, VA

Q: What is William Barker's NPI number?

The NPI number for William Barker is 1770599847. It was assigned to this individual provider in the NPPES registry on July 31, 2006.

Q: What is William Barker's specialty?

The primary specialty registered for this NPI is Emergency Medicine, specializing in Emergency Medical Services, with taxonomy code 207PE0004X.

Q: When was this NPI record last updated?

The NPPES record for William Barker was last updated on April 30, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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 July 31, 2006PECOS Enrolled

500 HOSPITAL DR, WARRENTON, VA 20186(540) 349-0595(540) 349-0587 Get Directions Write a Review

NPPES record last updated: April 30, 2008. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Mr. William J Barker Md NPPES

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

MR. WILLIAM J BARKER MD (NPI 1770599847) is an individual emergency medical services provider in Warrenton, Virginia, licensed in Virginia (0101036994) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1770599847

Entity TypeIndividualMale

Primary Taxonomy207PE0004X

Provider Legal NameMR. WILLIAM J BARKERCredential: MD

Location Address500 HOSPITAL DRWarrenton, VA 20186-3027

Mailing AddressPo Box 223323Chantilly, VA 20153-3323 · (540) 349-0595

Phone(540) 349-0595

Fax(540) 349-0587

Sole ProprietorNo

Enumeration DateJuly 31, 2006

Last NPPES UpdateApril 30, 2008

✔ NPI 1770599847 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency Medicine · Emergency Medical ServicesAllopathic & Osteopathic Physicians

Taxonomy Code207PE0004X

License✔ Licensed in VA · 0101036994

Definition

An emergency medicine physician who specializes in non-hospital based emergency medical services (e.g., disaster site, accident scene, transport vehicle, etc.) to provide pre-hospital assessment, treatment, and transport patients.

500 HOSPITAL DR, Warrenton, VA 20186

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Other Identifiers 6

Medicaid010055601VA

Medicare PIN930020763VA

Medicare PIN930000711VA

Medicare PIN013448F25VA

Medicare UPINB05512

Medicaid006028608VA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mr. William J Barker Md 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.

Areas of Expertise CMS Part B claims 4

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.

85 services84 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.

71 services71 patients

Critical care, first 30-74 minutes 99291

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

41 services41 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.

14 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20186 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

$99.13 typical visit price

range $18.07 – $138.91

Typical copayment $24.78 (range $4.51 – $34.72)

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. ALEXANDER-NICHOLAS DESIERTO SUTINGCO MD FACEP

Emergency Medicine (Emergency Medical Services)