Doctor profile · Federal record
Dr. Woojin Joo, MD
Internal Medicine Physician (CMS: Internal Medicine) · Los Angeles, CA
- NPI 1780110338
- Accepts Medicare
- 9 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
3511 W Olympic Blvd Ste 202
Los Angeles, CA 900193563
(310) 294-8090
fax (310) 294-5343
Credentials & registration
- NPI registered
- May 2017 — 9 yrs on file
- Profile last updated
- September 9, 2025
- Year of graduation
- 2017 — 9 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A160312
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1780110338. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,941
Distinct HCPCS
10
Medicare allowed
$131,179
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 581 | 328 | $98 | |
36415 |
Insertion of needle into vein for collection of blood sample | 329 | 233 | $8 | |
99441 |
Telephone medical discussion with physician, 5-10 minutes | 238 | 153 | $62 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 171 | 106 | $98 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 161 | 132 | $62 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 150 | 150 | $140 | |
G0444 |
Annual depression screening, 5 to 15 minutes | 107 | 107 | $21 | |
G0008 |
Administration of influenza virus vaccine | 64 | 64 | $33 | |
90674 |
Influenza vaccine, quadrivalent derived from cell cultures, preservative and antibiotic free | 58 | 58 | $33 | |
96372 |
Injection of drug or substance under skin or into muscle | 38 | 25 | $16 |
In context: peer comparison
Among 262 peers in Los Angeles Internal Medicine Physician, average services per provider: 160. This provider delivers 12× the peer median.Open Payments
Industry payments received
All-time total
$636
Transactions
26
Manufacturers
8
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Lilly USA, LLC | 10 | $223.76 | |
| Abbvie INC. | 6 | $159.83 | |
| Novo Nordisk INC | 4 | $90.72 | |
| Pfizer INC. | 2 | $63.24 | |
| Dexcom, INC. | 1 | $34.12 | |
| Aimmune Therapeutics, INC. | 1 | $25.31 | |
| Amgen INC. | 1 | $20.31 | |
| AstraZeneca Pharmaceuticals Lp | 1 | $19.14 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
5,615
Patients
1,557
Total drug cost
$969,315
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 943 | 258 | $15,512 |
| Amlodipine Besylate | Generic | 707 | 186 | $8,168 |
| Losartan Potassium | Generic | 505 | 142 | $7,684 |
| Metformin Hcl | Generic | 408 | 98 | $4,904 |
| Vascepa (Icosapent Ethyl) | Brand | 390 | 91 | $190,181 |
| Tamsulosin Hcl | Generic | 326 | 78 | $6,269 |
| Creon (Lipase/Protease/Amylase) | Brand | 324 | 92 | $339,972 |
| Jardiance (Empagliflozin) | Brand | 320 | 59 | $306,170 |
| Omeprazole | Generic | 305 | 98 | $4,270 |
| Lidocaine | Generic | 301 | 92 | $68,355 |
Frequently asked questions
What is Dr. Woojin Joo's medical specialty?
Dr. Woojin Joo practices Internal Medicine Physician in Los Angeles, CA.
Where does Dr. Woojin Joo practice?
Dr. Woojin Joo practices at 3511 W Olympic Blvd Ste 202, Los Angeles, CA 900193563. Office phone: 3102948090.
What is Dr. Woojin Joo's NPI?
Dr. Woojin Joo's National Provider Identifier (NPI) is 1780110338, issued by NPPES.
Does Dr. Woojin Joo accept Medicare assignment?
Yes. Dr. Woojin Joo accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Woojin Joo commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Insertion of needle into vein for collection of blood sample (HCPCS 36415); Telephone medical discussion with physician (HCPCS 99441). Source: CMS Medicare Physician & Other Practitioners file.