Internal Medicine, Hematology & Oncology · Orange, CA
NPI
1205974755
Since 2007
Specialty
Internal Medicine, Hematology & Oncology
Code 207RH0003X
Group practices
1
Medicare group memberships
Hospitals
2
Hospital affiliations
101 the City Dr S Bldg 23
Orange, CA, 92868
Phone (714) 456-8000
Groups this clinician bills Medicare through
Medicare paid, 2024
$154K
2,157 services
Medicare patients, 2024
247
Average age 75
Drug cost, 2024
$7.1M
1,431 prescriptions
Company payments, 2025
$72K
From 11 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Arash Rezazadeh Kalebasty was code 99215 (office e&m - established), 934 times for 202 patients. In total Arash Rezazadeh Kalebasty billed 2,157 services in 6 codes, and Medicare paid $154K.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2023-04-14.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99215 Office E&M - Established | Facility | 934 | 202 | $120.98 | $113K |
| G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's | Facility | 929 | 211 | $14.67 | $14K |
| G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's | Office | 78 | 44 | $14.83 | $1,156 |
| 99214 Office E&M - Established | Facility | 77 | 65 | $84.20 | $6,483 |
| 99215 Office E&M - Established | Office | 61 | 35 | $129.57 | $7,904 |
| 99205 Office E&M - New | Facility | 50 | 50 | $148.65 | $7,433 |
| 99205 Office E&M - New | Office | 19 | 19 | $164.42 | $3,124 |
By year: 2022 $103K for 901 services; 2023 $119K for 1,012 services; 2024 $154K for 2,157 services.
Medicare prescription drug claims, 2024
In 2024, the drug Arash Rezazadeh Kalebasty prescribed most often to Medicare patients was Orgovyx (Relugolix), with 302 prescriptions and refills. In total Arash Rezazadeh Kalebasty wrote 1,431 Medicare prescriptions that cost $7.1M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Orgovyx Relugolix | 302 | 324 | 56 | $797K |
| Nubeqa Darolutamide | 249 | 263 | 41 | $3.3M |
| Prednisone Generic | 232 | 258 | 38 | $945 |
| Abiraterone Acetate Generic | 222 | 222 | 32 | $459K |
| Erleada Apalutamide | 53 | 55 | Under 11 | $799K |
| Potassium Chloride Generic | 36 | 38 | Under 11 | $282 |
| Cabometyx Cabozantinib S-Malate | 31 | 31 | Under 11 | $647K |
| Pantoprazole Sodium Generic | 30 | 62 | 11 | $305 |
| Prochlorperazine Maleate Generic | 27 | 27 | 20 | $246 |
| Dexamethasone Generic | 26 | 29 | 15 | $233 |
| Zytiga Abiraterone Acetate | 25 | 25 | Under 11 | $271K |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 24 | 24 | Under 11 | $327 |
| Olanzapine Generic | 24 | 24 | Under 11 | $265 |
| Inlyta Axitinib | 23 | 23 | Under 11 | $456K |
| Ondansetron Hcl Generic | 17 | 17 | 15 | $81.99 |
Brand drugs: 735 claims; generic drugs: 696 claims; opioid claims: 25.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Arash Rezazadeh Kalebasty $72K ($70K in general payments such as food, travel and fees and $1,754 for research) from 11 companies. The largest payer was Exelixis Inc. with $20K.
| Company | Payments | Amount |
|---|---|---|
| Exelixis Inc. EXEL | 22 | $20K |
| Bayer Healthcare Pharmaceuticals Inc. BAYN.DE | 10 | $19K |
| Merck Sharp & Dohme LLC MRK | 7 | $13K |
| Janssen Biotech, Inc. JNJ | 15 | $13K |
| Novartis Pharmaceuticals Corporation NVS | 5 | $3,854 |
| EMD Serono, Inc. MRK.DE | 1 | $1,380 |
| Pfizer Inc. PFE | 3 | $750 |
| Aveo Pharmaceuticals, Inc. | 2 | $190 |
| Telix Pharmaceuticals TLX | 1 | $53.63 |
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.