Doctor profile · Federal record
Dr. William Barker, MD
Emergency Medical Services (Emergency Medicine) Physician · Warrenton, VA
- NPI 1770599847
- 20 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
500 Hospital Dr
Warrenton, VA 201863027
(540) 349-0595
fax (540) 349-0587 - Mailing address
-
Po Box 223323
Chantilly, VA 201533323
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- April 30, 2008
- Specialty taxonomy
- 207PE0004X — NUCC code
- State license (1)
- Virginia #0101036994
- Medicaid (2)
- VA #006028608 · VA #010055601
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1770599847. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
207
Distinct HCPCS
4
Medicare allowed
$34,683
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99284 |
Emergency department visit with moderate level of medical decision making | 95 | 92 | $133 | |
99285 |
Emergency department visit with high level of medical decision making | 52 | 51 | $190 | |
99291 |
Critical care, first 30-74 minutes | 47 | 47 | $236 | |
99283 |
Emergency department visit with low level of medical decision making | 13 | 12 | $79 |
In context: peer comparison
Among 7 peers in Warrenton Emergency Medical Services (Emergency Medicine) Physician, average services per provider: 86. This provider delivers 2.4× the peer median.Frequently asked questions
What is Dr. William Barker's medical specialty?
Dr. William Barker practices Emergency Medical Services (Emergency Medicine) Physician in Warrenton, VA.
Where does Dr. William Barker practice?
Dr. William Barker practices at 500 Hospital Dr, Warrenton, VA 201863027. Office phone: 5403490595.
What is Dr. William Barker's NPI?
Dr. William Barker's National Provider Identifier (NPI) is 1770599847, issued by NPPES.
What procedures does Dr. William Barker commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with moderate level of medical decision making (HCPCS 99284); Emergency department visit with high level of medical decision making (HCPCS 99285); Critical care (HCPCS 99291). Source: CMS Medicare Physician & Other Practitioners file.