Internal Medicine, Hematology & Oncology · Oxnard, CA
NPI
1154584704
Since 2008
Specialty
Internal Medicine, Hematology & Oncology
Code 207RH0003X
Group practices
2
Medicare group memberships
Hospitals
2
Hospital affiliations
1851 Lombard St Ste 105
Oxnard, CA, 93030
Phone (805) 485-7232
Groups this clinician bills Medicare through
Medicare paid, 2024
$24K
665 services
Medicare patients, 2024
43
Average age 74
Drug cost, 2024
$8.9M
2,675 prescriptions
Company payments, 2025
$4,749
From 36 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Warner Peng was code 99213 (office e&m - established), 35 times for 22 patients. In total Warner Peng billed 665 services in 37 codes, and Medicare paid $24K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2021-12-23.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99213 Office E&M - Established | Office | 35 | 22 | $63.43 | $2,220 |
| 99442 Telephone Services | Office | 17 | 11 | $70.07 | $1,191 |
By year: 2022 $39K for 1,334 services; 2023 $31K for 1,995 services; 2024 $24K for 665 services.
Medicare prescription drug claims, 2024
In 2024, the drug Warner Peng prescribed most often to Medicare patients was Anastrozole, with 181 prescriptions and refills. In total Warner Peng wrote 2,675 Medicare prescriptions that cost $8.9M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Anastrozole Generic | 181 | 395 | 65 | $2,032 |
| Procrit Epoetin Alfa | 110 | 114 | 34 | $100K |
| Abiraterone Acetate Generic | 103 | 103 | 14 | $234K |
| Dexamethasone Sodium Phosphate Generic | 101 | 103 | 36 | $240 |
| Prednisone Generic | 86 | 119 | 40 | $350 |
| Ondansetron Hcl Generic | 82 | 82 | 64 | $1,467 |
| Xgeva Denosumab | 71 | 81 | 12 | $225K |
| Dexamethasone Generic | 69 | 98 | 32 | $1,197 |
| Lenalidomide Generic | 68 | 68 | 11 | $768K |
| Lupron Depot Leuprolide Acetate | 64 | 190 | 25 | $371K |
| Prochlorperazine Maleate Generic | 64 | 64 | 51 | $1,139 |
| Granisetron Hcl Granisetron Hcl/Pf | 62 | 63 | 22 | $1,009 |
| Diphenhydramine Hcl Generic | 62 | 64 | 27 | $73.98 |
| Keytruda Pembrolizumab | 54 | 58 | 11 | $859K |
| Revlimid Lenalidomide | 46 | 46 | 16 | $726K |
Brand drugs: 942 claims; generic drugs: 1,733 claims; opioid claims: 59.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Warner Peng $4,749 ($4,749 in general payments such as food, travel and fees) from 36 companies. The largest payer was AstraZeneca Pharmaceuticals LP with $454.
| Company | Payments | Amount |
|---|---|---|
| AstraZeneca Pharmaceuticals LP AZN | 19 | $454 |
| Novartis Pharmaceuticals Corporation NVS | 21 | $335 |
| Pfizer Inc. PFE | 14 | $315 |
| E.R. Squibb & Sons, L.L.C. BMY | 15 | $275 |
| Janssen Biotech, Inc. JNJ | 11 | $250 |
| Astellas Pharma US Inc 4503.T | 7 | $194 |
| Takeda Pharmaceuticals U.S.A., Inc. TAK | 6 | $190 |
| Incyte Corporation INCY | 7 | $181 |
| Merck Sharp & Dohme LLC MRK | 7 | $178 |
| Bayer Healthcare Pharmaceuticals Inc. BAYN.DE | 6 | $175 |
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.