Doctor profile · Federal record
Dr. John Koo, MD
Internal Medicine Physician (CMS: Internal Medicine) · Los Angeles, CA
- NPI 1477617561
- Accepts Medicare
- MIPS 100.0 / 100 · 2023
- 23 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
12021 Wilmington Ave
Los Angeles, CA 900593019
(310) 668-4574 - Mailing address
-
538 S Manhattan Pl Apt 205
Los Angeles, CA 900204487
Credentials & registration
- NPI registered
- December 2006 — 20 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 2003 — 23 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A95589
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1477617561. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,231
Distinct HCPCS
6
Medicare allowed
$155,596
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 509 | 196 | $120 | |
99239 |
Hospital discharge day management, more than 30 minutes | 213 | 202 | $115 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 210 | 200 | $173 | |
99497 |
Advance care planning, first 30 minutes | 208 | 198 | $76 | |
99291 |
Critical care, first 30-74 minutes | 73 | 20 | $212 | |
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 18 | 18 | $131 |
In context: peer comparison
Among 262 peers in Los Angeles Internal Medicine Physician, average services per provider: 160. This provider delivers 7.7× the peer median.Open Payments
Industry payments received
All-time total
$599
Transactions
11
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Janssen Biotech, INC. | 1 | $149.99 | |
| Janssen Pharmaceuticals, INC | 2 | $139.28 | |
| Leo Pharma INC. | 2 | $124.66 | |
| Zoll Services LLC (A/K/A Zoll LifeCor Corp) | 4 | $113.14 | |
| iRhythm Technologies, INC. | 1 | $37.71 | |
| Abbvie INC. | 1 | $34.62 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
145
Patients
143
Total drug cost
$2,700
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Pantoprazole Sodium | Generic | 24 | 23 | $997 |
| Cefdinir | Generic | 23 | 23 | $491 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 16 | 16 | $360 |
| Atorvastatin Calcium | Generic | 16 | 16 | $259 |
| Prednisone | Generic | 15 | 14 | $117 |
| Clopidogrel (Clopidogrel Bisulfate) | Brand | 14 | 14 | $119 |
| Losartan Potassium | Generic | 14 | 14 | $143 |
| Ciprofloxacin Hcl | Generic | 12 | 12 | $101 |
| Carvedilol | Generic | 11 | 11 | $115 |
Frequently asked questions
What is Dr. John Koo's medical specialty?
Dr. John Koo practices Internal Medicine Physician in Los Angeles, CA.
Where does Dr. John Koo practice?
Dr. John Koo practices at 12021 Wilmington Ave, Los Angeles, CA 900593019. Office phone: 3106684574.
What is Dr. John Koo's NPI?
Dr. John Koo's National Provider Identifier (NPI) is 1477617561, issued by NPPES.
Does Dr. John Koo accept Medicare assignment?
Yes. Dr. John Koo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Koo commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.