Doctor profile · Federal record
Dr. Warren Johnson, MD
Emergency Medicine Physician (CMS: Emergency Medicine) · Emergency Medicine Physician · Fort Irwin, CA
- NPI 1558521682
- Accepts Medicare
- 18 yrs in practice
- Licensed in 2 states
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
Weed Army Community Hospital Bldg 166
Fort Irwin, CA 92310
(760) 380-9407
Credentials & registration
- NPI registered
- June 2008 — 18 yrs on file
- Profile last updated
- June 14, 2018
- Year of graduation
- 2008 — 18 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State licenses (2)
- Oregon #MD187425 · California #A117174
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1558521682. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
454
Distinct HCPCS
5
Medicare allowed
$56,999
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 203 | 197 | $172 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 117 | 108 | $8 | |
99284 |
Emergency department visit with moderate level of medical decision making | 69 | 67 | $118 | |
99291 |
Critical care, first 30-74 minutes | 51 | 51 | $209 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 14 | 14 | $171 |
In context: peer comparison
Among 1 peers in Fort Irwin Emergency Medicine Physician, average services per provider: 90. This provider delivers 5.0× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
157
Patients
156
Total drug cost
$1,173
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ondansetron Odt (Ondansetron) | Brand | 31 | 31 | $145 |
| Oxycodone Hcl | Generic | 29 | 29 | $66 |
| Cefdinir | Generic | 26 | 25 | $542 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 20 | 20 | $150 |
| Prednisone | Generic | 16 | 16 | $39 |
| Azithromycin | Generic | 13 | 13 | $68 |
| Doxycycline Hyclate | Generic | 11 | 11 | $136 |
| Furosemide | Generic | 11 | 11 | $27 |
Hospital affiliations
Frequently asked questions
What is Dr. Warren Johnson's medical specialty?
Dr. Warren Johnson practices Emergency Medicine Physician in Fort Irwin, CA.
Where does Dr. Warren Johnson practice?
Dr. Warren Johnson practices at Weed Army Community Hospital Bldg 166, Fort Irwin, CA 92310. Office phone: 7603809407.
What is Dr. Warren Johnson's NPI?
Dr. Warren Johnson's National Provider Identifier (NPI) is 1558521682, issued by NPPES.
Does Dr. Warren Johnson accept Medicare assignment?
Yes. Dr. Warren Johnson accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Warren Johnson commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Emergency department visit with moderate level of medical decision making (HCPCS 99284). Source: CMS Medicare Physician & Other Practitioners file.