Doctor profile · Federal record
Dr. Samuel Klempner, M.D
Hematology & Oncology Physician (CMS: Hematology/Oncology) · Internal Medicine Physician · Medical Oncology Physician · Los Angeles, CA
- NPI 1134329378
- Accepts Medicare
- 19 yrs in practice
- Licensed in 2 states
- Male
- Group practice
- No sanctions
Practice & contact
Operates at 3 locations .
- Primary practice
-
11800 Wilshire Blvd
Los Angeles, CA 900256602
(310) 231-2167
fax (310) 231-2172 - Additional location
-
55 Fruit St
Boston, MA 021142696
(617) 724-7168 - Additional location
-
75 Francis St
Boston, MA 021156110
(617) 732-5500 - Mailing address
-
6424 Colgate Ave
Los Angeles, CA 900484409
Credentials & registration
- NPI registered
- July 2007 — 19 yrs on file
- Profile last updated
- February 11, 2026
- Year of graduation
- 2007 — 19 yrs since
- Specialty taxonomy
- 207RH0003X — NUCC code
- State licenses (3)
- California #A125171 · Massachusetts #232414 · Massachusetts #243585
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1134329378. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
506
Distinct HCPCS
5
Medicare allowed
$59,309
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 313 | 91 | $103 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 88 | 26 | $126 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 75 | 54 | $153 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 16 | 14 | $184 | |
99443 |
Telephone medical discussion with physician, 21-30 minutes | 14 | 12 | $103 |
In context: peer comparison
Among 50 peers in Los Angeles Hematology & Oncology Physician, average services per provider: 1,244. This provider delivers 0.4× the peer median.Open Payments
Industry payments received
All-time total
$28,985
Transactions
16
Manufacturers
7
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Merck Sharp & Dohme LLC | 4 | $11,435.00 | |
| AstraZeneca Pharmaceuticals Lp | 4 | $5,055.00 | |
| Eisai INC. | 2 | $4,773.88 | |
| BeiGene USA, INC. | 1 | $3,375.00 | |
| Boehringer Ingelheim International GmbH | 1 | $2,960.00 | |
| Daiichi Sankyo INC. | 1 | $1,290.00 | |
| Amgen INC. | 3 | $96.18 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
74
Patients
30
Total drug cost
$894
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prochlorperazine Maleate | Generic | 28 | 17 | $305 |
| Ondansetron Hcl | Generic | 21 | 13 | $63 |
| Oxycodone Hcl | Generic | 13 | 0 | $274 |
| Dexamethasone | Generic | 12 | 0 | $251 |
Hospital affiliations
Frequently asked questions
What is Dr. Samuel Klempner's medical specialty?
Dr. Samuel Klempner practices Hematology & Oncology Physician in Los Angeles, CA.
Where does Dr. Samuel Klempner practice?
Dr. Samuel Klempner practices at 11800 Wilshire Blvd, Los Angeles, CA 900256602. Office phone: 3102312167.
What is Dr. Samuel Klempner's NPI?
Dr. Samuel Klempner's National Provider Identifier (NPI) is 1134329378, issued by NPPES.
Does Dr. Samuel Klempner accept Medicare assignment?
Yes. Dr. Samuel Klempner accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Samuel Klempner commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.