Doctor profile · Federal record
Dr. Clan Hahn, M.D.
Hematology & Oncology Physician (CMS: Hematology/Oncology) · Los Angeles, CA
- NPI 1023043189
- Accepts Medicare
- 34 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
520 S Virgil Ave Ste 306
Los Angeles, CA 900201441
(213) 277-1700
fax (213) 277-1817
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- July 12, 2022
- Year of graduation
- 1992 — 34 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State license (1)
- California #G78245
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1023043189. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
6,093
Distinct HCPCS
10
Medicare allowed
$349,663
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 1,054 | 190 | $140 | |
J1100 |
Injection, dexamethasone sodium phosphate, 1 mg | 1,000 | 15 | $0 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 785 | 95 | $126 | |
J1626 |
Injection, granisetron hydrochloride, 100 mcg | 700 | 13 | $0 | |
36415 |
Insertion of needle into vein for collection of blood sample | 677 | 172 | $8 | |
96375 |
Injection of additional new drug or substance into vein | 534 | 20 | $18 | |
96413 |
Administration of chemotherapy into vein, 1 hour or less | 220 | 23 | $153 | |
96372 |
Injection of drug or substance under skin or into muscle | 206 | 16 | $16 | |
96361 |
Infusion into a vein for hydration, each additional hour | 203 | 24 | $15 | |
J7050 |
Infusion, normal saline solution, 250 cc | 155 | 22 | $1 |
In context: peer comparison
Among 50 peers in Los Angeles Hematology & Oncology Physician, average services per provider: 1,244. This provider delivers 4.9× the peer median.Open Payments
Industry payments received
All-time total
$4,216
Transactions
132
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Regeneron Healthcare Solutions, INC. | 13 | $403.68 | |
| Merck Sharp & Dohme LLC | 12 | $360.74 | |
| E.R. Squibb & Sons, L.L.C. | 11 | $335.35 | |
| Pfizer INC. | 18 | $316.21 | |
| Secura Bio, INC. | 4 | $285.74 | |
| Adaptive Biotechnologies Corporation | 10 | $243.79 | |
| Bayer Healthcare Pharmaceuticals INC. | 13 | $236.47 | |
| Gilead Sciences, INC. | 7 | $189.70 | |
| Eisai INC. | 11 | $175.18 | |
| Incyte Corporation | 7 | $168.99 | |
| Celgene Corporation | 6 | $156.30 | |
| Exelixis INC. | 6 | $153.66 | |
| Array Biopharma INC | 6 | $109.93 | |
| Daiichi Sankyo INC. | 4 | $106.15 | |
| Novartis Pharmaceuticals Corporation | 4 | $88.92 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
571
Patients
144
Total drug cost
$803,742
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Anastrozole | Generic | 78 | 20 | $2,241 |
| Ondansetron Odt (Ondansetron) | Brand | 60 | 46 | $1,438 |
| Procrit (Epoetin Alfa) | Brand | 46 | 17 | $180,686 |
| Diphenhydramine Hcl | Generic | 45 | 13 | $123 |
| Dexamethasone Sodium Phosphate | Generic | 43 | 11 | $187 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 42 | 19 | $497 |
| Famotidine (Famotidine/Pf) | Brand | 39 | 0 | $60 |
| Hydroxyurea | Generic | 32 | 0 | $1,055 |
| Aranesp (Darbepoetin Alfa in Polysorbat) | Brand | 29 | 0 | $72,680 |
| Dexamethasone | Generic | 29 | 18 | $637 |
Hospital affiliations
Frequently asked questions
What is Dr. Clan Hahn's medical specialty?
Dr. Clan Hahn practices Hematology & Oncology Physician in Los Angeles, CA.
Where does Dr. Clan Hahn practice?
Dr. Clan Hahn practices at 520 S Virgil Ave Ste 306, Los Angeles, CA 900201441. Office phone: 2132771700.
What is Dr. Clan Hahn's NPI?
Dr. Clan Hahn's National Provider Identifier (NPI) is 1023043189, issued by NPPES.
Does Dr. Clan Hahn accept Medicare assignment?
Yes. Dr. Clan Hahn accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Clan Hahn commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Injection, dexamethasone sodium phosphate, 1 mg (HCPCS J1100); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233). Source: CMS Medicare Physician & Other Practitioners file.