Doctor profile · Federal record
Dr. Ralph Koo, MD
Emergency Medical Services (Emergency Medicine) Physician (CMS: Emergency Medicine) · Sacramento, CA
- NPI 1205932050
- Accepts Medicare
- 33 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
2801 L St
Sacramento, CA 958165615
(916) 454-2222
Credentials & registration
- NPI registered
- September 2006 — 20 yrs on file
- Profile last updated
- March 25, 2010
- Year of graduation
- 1993 — 33 yrs since
- Specialty taxonomy
- 207PE0004X — NUCC code
- State license (1)
- California #GO81031
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1205932050. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
693
Distinct HCPCS
5
Medicare allowed
$74,422
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 263 | 233 | $9 | |
99285 |
Emergency department visit with high level of medical decision making | 174 | 166 | $178 | |
99284 |
Emergency department visit with moderate level of medical decision making | 136 | 134 | $124 | |
99291 |
Critical care, first 30-74 minutes | 100 | 98 | $221 | |
99292 |
Critical care, each additional 30 minutes | 20 | 17 | $111 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 181. This provider delivers 3.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
78
Patients
67
Total drug cost
$795
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Ondansetron Odt (Ondansetron) | Brand | 25 | 25 | $140 |
| Cephalexin | Generic | 17 | 17 | $212 |
| Prednisone | Generic | 14 | 14 | $45 |
| Albuterol Sulfate Hfa (Albuterol Sulfate) | Brand | 11 | 0 | $363 |
| Morphine Sulfate | Generic | 11 | 11 | $34 |
Hospital affiliations
Frequently asked questions
What is Dr. Ralph Koo's medical specialty?
Dr. Ralph Koo practices Emergency Medical Services (Emergency Medicine) Physician in Sacramento, CA.
Where does Dr. Ralph Koo practice?
Dr. Ralph Koo practices at 2801 L St, Sacramento, CA 958165615. Office phone: 9164542222.
What is Dr. Ralph Koo's NPI?
Dr. Ralph Koo's National Provider Identifier (NPI) is 1205932050, issued by NPPES.
Does Dr. Ralph Koo accept Medicare assignment?
Yes. Dr. Ralph Koo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ralph Koo commonly perform?
Top Medicare-reported procedures in 2023: Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Emergency department visit with high level of medical decision making (HCPCS 99285); Emergency department visit with moderate level of medical decision making (HCPCS 99284). Source: CMS Medicare Physician & Other Practitioners file.