Hematology/Oncology · Riverside, CA
NPI
1386602720
Since 2006
Specialty
Hematology/Oncology
Code 174400000X
Group practices
2
Medicare group memberships
Hospitals
1
Hospital affiliations
4500 Brockton Avenue, Ste. #107
Riverside, CA, 92501
Phone (951) 276-2760
Groups this clinician bills Medicare through
Medicare paid, 2024
$1.1M
48,477 services
Medicare patients, 2024
242
Average age 73
Drug cost, 2024
$5.8M
1,526 prescriptions
Company payments, 2025
$6,502
From 62 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Brian S Choi was code J1100 (injection, dexamethasone sodium phosphate, 1 mg), 706 times for 15 patients. In total Brian S Choi billed 48,477 services in 80 codes, and Medicare paid $1.1M.
| Code |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2020-01-23.
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| J1100 Injection, dexamethasone sodium phosphate, 1 mg | Office | 706 | 15 | $0.09 | $63.16 |
| 99214 Office E&M - Established | Office | 349 | 145 | $93.28 | $33K |
| 96413 Chemotherapy Administration | Office | 132 | 21 | $106.92 | $14K |
| 96127 Behavioral Health Services | Office | 119 | 108 | $3.81 | $453 |
| 96367 Intravenous Infusion, Hydration | Office | 94 | 19 | $23.93 | $2,250 |
| 96415 Chemotherapy Administration | Office | 77 | 14 | $22.98 | $1,770 |
| 99215 Office E&M - Established | Office | 66 | 34 | $145.68 | $9,615 |
| 99233 Hospital E&M - Subsequent | Facility | 65 | 37 | $94.18 | $6,122 |
| 96372 Injection Administration | Office | 52 | 13 | $11.71 | $609 |
| 96417 Chemotherapy Administration | Office | 48 | 11 | $54.35 | $2,609 |
| 99223 Hospital E&M - Initial | Facility | 44 | 44 | $135.67 | $5,969 |
| 36415 Venipuncture Blood Collection | Office | 33 | 14 | $8.65 | $285 |
| 85025 Blood Count | Office | 25 | 11 | $7.61 | $190 |
| 99205 Office E&M - New | Office | 21 | 21 | $162.48 | $3,412 |
| 99204 Office E&M - New | Office | 18 | 18 | $128.74 | $2,317 |
By year: 2022 $291K for 22,921 services; 2023 $710K for 53,141 services; 2024 $1.1M for 48,477 services.
Lab tests billed to Medicare, 2024
| Test code | Tests | Patients | Paid per test | Medicare paid |
|---|---|---|---|---|
| 36415 Venipuncture Blood Collection | 33 | 14 | $8.65 | $285 |
| 85025 Blood Count | 25 | 11 | $7.61 | $190 |
Medicare prescription drug claims, 2024
In 2024, the drug Brian S Choi prescribed most often to Medicare patients was Anastrozole, with 102 prescriptions and refills. In total Brian S Choi wrote 1,526 Medicare prescriptions that cost $5.8M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Anastrozole Generic | 102 | 273 | 40 | $3,033 |
| Hydrocodone-Acetaminophen Hydrocodone/Acetaminophen | 53 | 53 | 17 | $884 |
| Dexamethasone Sodium Phosphate Generic | 50 | 51 | 17 | $121 |
| Palonosetron Hcl Generic | 39 | 39 | 14 | $1,532 |
| Famotidine Generic | 38 | 59 | 18 | $162 |
| Fosaprepitant Dimeglumine Generic | 38 | 38 | 13 | $3,213 |
| Brukinsa Zanubrutinib | 37 | 37 | Under 11 | $403K |
| Ruxience Rituximab-Pvvr | 34 | 34 | Under 11 | $129K |
| Prednisone Generic | 34 | 42 | 15 | $95.84 |
| Dexamethasone Generic | 32 | 48 | 23 | $821 |
| Orgovyx Relugolix | 31 | 31 | Under 11 | $80K |
| Diphenhydramine Hcl Generic | 30 | 31 | 11 | $59.06 |
| Ondansetron Hcl Ondansetron Hcl/Pf | 30 | 31 | 12 | $87.11 |
| Ibrance Palbociclib | 29 | 29 | Under 11 | $440K |
| Carboplatin Generic | 26 | 27 | 11 | $1,027 |
Brand drugs: 580 claims; generic drugs: 946 claims; opioid claims: 81.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Brian S Choi $6,502 ($6,502 in general payments such as food, travel and fees) from 62 companies. The largest payer was Janssen Biotech, Inc. with $485.
| Company | Payments | Amount |
|---|---|---|
| Janssen Biotech, Inc. JNJ | 17 | $485 |
| Merck Sharp & Dohme LLC MRK | 15 | $467 |
| Novartis Pharmaceuticals Corporation NVS | 29 | $464 |
| Pfizer Inc. PFE | 20 | $437 |
| AstraZeneca Pharmaceuticals LP AZN | 12 | $295 |
| Celgene Corporation BMY | 10 | $217 |
| Abbvie Inc. ABBV | 8 | $211 |
| BeOne Medicines USA, Inc. ONC | 8 | $211 |
| Eisai Inc. 4523.T | 7 | $198 |
| Incyte Corporation INCY | 9 | $191 |
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.