Internal Medicine, Rheumatology · Oakland, CA
NPI
1932183472
Since 2005
Specialty
Internal Medicine, Rheumatology
Code 207RR0500X
Group practices
1
Medicare group memberships
Hospitals
0
Hospital affiliations
350 30th St, #320
Oakland, CA, 94609
Phone (510) 465-6700
Groups this clinician bills Medicare through
Medicare paid
-
No Medicare services published
Medicare patients
-
Drug cost, 2024
$994K
1,511 prescriptions
Company payments, 2025
$76.86
From 1 companies
Medicare prescription drug claims, 2024
In 2024, the drug Yi Yi S Gu prescribed most often to Medicare patients was Prednisone, with 271 prescriptions and refills. In total Yi Yi S Gu wrote 1,511 Medicare prescriptions that cost $994K.
| Drug |
|---|
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2022-01-06.
| Claims |
|---|
| 30-day fills |
|---|
| Patients |
|---|
| Cost |
|---|
| Prednisone Generic | 271 | 697 | 115 | $3,573 |
| Methotrexate Methotrexate Sodium | 221 | 624 | 105 | $4,534 |
| Hydroxychloroquine Sulfate Generic | 132 | 421 | 53 | $4,449 |
| Allopurinol Generic | 129 | 427 | 44 | $1,574 |
| Xeljanz Tofacitinib Citrate | 89 | 95 | 11 | $256K |
| Colchicine Generic | 58 | 134 | 25 | $1,698 |
| Amjevita(Cf) Adalimumab-Atto | 46 | 61 | Under 11 | $60K |
| Leflunomide Generic | 41 | 133 | 17 | $1,362 |
| Sulfasalazine Generic | 39 | 123 | 19 | $3,118 |
| Azathioprine Generic | 38 | 126 | 17 | $1,763 |
| Enbrel Etanercept | 37 | 37 | Under 11 | $180K |
| Amjevita(Cf) Autoinjector Adalimumab-Atto | 25 | 37 | Under 11 | $34K |
| Omeprazole Generic | 23 | 65 | 12 | $221 |
| Baclofen Generic | 21 | 21 | Under 11 | $148 |
| Enbrel Sureclick Etanercept | 19 | 19 | Under 11 | $93K |
Brand drugs: - claims; generic drugs: 1,150 claims; opioid claims: 34.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Yi Yi S Gu $76.86 ($76.86 in general payments such as food, travel and fees) from 1 company. The largest payer was Genzyme Corporation with $76.86.
| Company | Payments | Amount |
|---|---|---|
| Genzyme Corporation SNY | 1 | $76.86 |
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.