Doctor profile · Federal record
Dr. Robert Zimmerman, MD
Radiation Oncology Physician (CMS: Radiation Oncology) · Specialist · Los Angeles, CA
- NPI 1679558811
- Accepts Medicare
- MIPS 67.0 / 100 · 2023
- 34 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1338 S Hope St
Los Angeles, CA 900152902
(213) 724-5634
fax (213) 742-5644 - Mailing address
-
5767 W Century Blvd Ste 400
Los Angeles, CA 900455631
Credentials & registration
- NPI registered
- December 2005 — 21 yrs on file
- Profile last updated
- April 5, 2022
- Year of graduation
- 1992 — 34 yrs since
- Specialty taxonomy
- 2085R0001X — NUCC code
- State license (1)
- California #G77580
- Medicaid
- CA #00G775800
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1679558811. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
122
Distinct HCPCS
7
Medicare allowed
$15,130
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
77427 |
Radiation treatment management, 5 treatment sessions | 29 | 11 | $205 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 23 | 17 | $99 | |
77300 |
Calculation of radiation therapy dose | 16 | 14 | $35 | |
77280 |
Obtaining data needed to develop the optimal radiation treatment, 1 treatment area | 14 | 14 | $41 | |
77332 |
Design and construction of simple radiation treatment device | 14 | 14 | $26 | |
77261 |
Simple radiation therapy planning | 13 | 13 | $76 | |
77469 |
Management of intraoperative radiation treatment | 13 | 13 | $341 |
In context: peer comparison
Among 26 peers in Los Angeles Radiation Oncology Physician, average services per provider: 83. This provider delivers 1.5× the peer median.Open Payments
Industry payments received
All-time total
$14
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Merck Sharp & Dohme LLC | 1 | $13.82 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. Robert Zimmerman's medical specialty?
Dr. Robert Zimmerman practices Radiation Oncology Physician in Los Angeles, CA.
Where does Dr. Robert Zimmerman practice?
Dr. Robert Zimmerman practices at 1338 S Hope St, Los Angeles, CA 900152902. Office phone: 2137245634.
What is Dr. Robert Zimmerman's NPI?
Dr. Robert Zimmerman's National Provider Identifier (NPI) is 1679558811, issued by NPPES.
Does Dr. Robert Zimmerman accept Medicare assignment?
Yes. Dr. Robert Zimmerman accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Robert Zimmerman commonly perform?
Top Medicare-reported procedures in 2023: Radiation treatment management, 5 treatment sessions (HCPCS 77427); Established patient office or other outpatient visit (HCPCS 99213); Calculation of radiation therapy dose (HCPCS 77300). Source: CMS Medicare Physician & Other Practitioners file.