Doctor profile · Federal record
Dr. Ja Eun Koo
Internal Medicine Physician (CMS: Internal Medicine) · Loma Linda, CA
- NPI 1558700187
- Accepts Medicare
- MIPS 76.4 / 100 · 2023
- 13 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
11234 Anderson St
Loma Linda, CA 92354
(909) 558-4000 - Additional location
-
11370 Anderson St
Loma Linda, CA 923543450
(909) 558-2145 - Mailing address
-
11234 Anderson St # Mc-1516
Loma Linda, CA 923542804
Credentials & registration
- NPI registered
- June 2013 — 13 yrs on file
- Profile last updated
- July 1, 2018
- Year of graduation
- 2013 — 13 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A137368
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1558700187. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
371
Distinct HCPCS
3
Medicare allowed
$34,973
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 239 | 72 | $81 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 71 | 33 | $121 | |
99239 |
Hospital discharge day management, more than 30 minutes | 61 | 58 | $117 |
In context: peer comparison
Among 44 peers in Loma Linda Internal Medicine Physician, average services per provider: 98. This provider delivers 3.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
41
Patients
25
Total drug cost
$1,545
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levofloxacin | Generic | 15 | 11 | $75 |
| Naloxone Hcl | Generic | 15 | 14 | $1,291 |
| Omeprazole | Generic | 11 | 0 | $180 |
Frequently asked questions
What is Dr. Ja Eun Koo's medical specialty?
Dr. Ja Eun Koo practices Internal Medicine Physician in Loma Linda, CA.
Where does Dr. Ja Eun Koo practice?
Dr. Ja Eun Koo practices at 11234 Anderson St, Loma Linda, CA 92354. Office phone: 9095584000.
What is Dr. Ja Eun Koo's NPI?
Dr. Ja Eun Koo's National Provider Identifier (NPI) is 1558700187, issued by NPPES.
Does Dr. Ja Eun Koo accept Medicare assignment?
Yes. Dr. Ja Eun Koo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ja Eun Koo commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239). Source: CMS Medicare Physician & Other Practitioners file.