Internal Medicine, Rheumatology · Riverside, CA
NPI
1255490827
Since 2006
Specialty
Internal Medicine, Rheumatology
Code 207RR0500X
Group practices
1
Medicare group memberships
Hospitals
0
Hospital affiliations
10800 Magnolia Ave
Riverside, CA, 92505
Phone (909) 353-2000
Groups this clinician bills Medicare through
Medicare paid
-
No Medicare services published
Medicare patients
-
Drug cost, 2024
$1.8M
1,973 prescriptions
Company payments, 2025
$496
From 5 companies
Medicare prescription drug claims, 2024
In 2024, the drug Amy C Chang prescribed most often to Medicare patients was Methotrexate (Methotrexate Sodium), with 333 prescriptions and refills. In total Amy C Chang wrote 1,973 Medicare prescriptions that cost $1.8M.
| Drug |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2021-12-02.
| Claims |
|---|
| 30-day fills |
|---|
| Patients |
|---|
| Cost |
|---|
| Methotrexate Methotrexate Sodium | 333 | 987 | 123 | $7,187 |
| Prednisone Generic | 208 | 447 | 86 | $2,395 |
| Hydroxychloroquine Sulfate Generic | 197 | 617 | 73 | $6,864 |
| Amjevita(Cf) Autoinjector Adalimumab-Atto | 129 | 205 | 39 | $199K |
| Leflunomide Generic | 98 | 307 | 40 | $3,393 |
| Allopurinol Generic | 76 | 239 | 30 | $1,061 |
| Enbrel Sureclick Etanercept | 75 | 75 | Under 11 | $365K |
| Colchicine Generic | 69 | 199 | 31 | $2,474 |
| Enbrel Etanercept | 67 | 69 | Under 11 | $327K |
| Orencia Clickject Abatacept | 57 | 57 | Under 11 | $262K |
| Meloxicam Generic | 54 | 111 | 20 | $411 |
| Mycophenolate Mofetil Generic | 51 | 156 | 19 | $6,882 |
| Rasuvo Methotrexate/Pf | 43 | 99 | 14 | $40K |
| Cosentyx Sensoready (2 Pens) Secukinumab | 39 | 44 | Under 11 | $180K |
| Leucovorin Calcium Generic | 38 | 107 | 13 | $1,454 |
Brand drugs: - claims; generic drugs: 1,415 claims; opioid claims: 24.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Amy C Chang $496 ($496 in general payments such as food, travel and fees) from 5 companies. The largest payer was Genzyme Corporation with $134.
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.