Internal Medicine, Rheumatology · Philadelphia, PA
NPI
1609899210
Since 2006
Specialty
Internal Medicine, Rheumatology
Code 207RR0500X
Group practices
2
Medicare group memberships
Hospitals
5
Hospital affiliations
3400 Spruce St, Suite 600
Philadelphia, PA, 19104
Phone (215) 662-2454
Groups this clinician bills Medicare through
Medicare paid, 2024
$42K
677 services
Medicare patients, 2024
224
Average age 70
Drug cost, 2024
$1.1M
1,524 prescriptions
Company payments, 2025
$33K
From 5 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by Chris T Derk was code 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), 177 times for 105 patients. In total Chris T Derk billed 677 services in 15 codes, and Medicare paid $42K.
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2011-11-23.
| Code | Setting | Services | Patients | Paid per service | Medicare paid |
|---|---|---|---|---|---|
| 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 | 177 | 105 | $12.93 | $2,289 |
| 99215 Office E&M - Established | Office | 151 | 97 | $102.36 | $15K |
| 99215 Office E&M - Established | Facility | 88 | 66 | $107.18 | $9,432 |
| 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 | 80 | 61 | $12.82 | $1,026 |
| 99214 Office E&M - Established | Facility | 31 | 28 | $70.27 | $2,178 |
| 99214 Office E&M - Established | Office | 26 | 25 | $62.19 | $1,617 |
| 99205 Office E&M - New | Office | 21 | 21 | $133.52 | $2,804 |
| 99213 Office E&M - Established | Office | 19 | 16 | $55.09 | $1,047 |
| 99213 Office E&M - Established | Facility | 18 | 16 | $53.36 | $961 |
| 99205 Office E&M - New | Facility | 15 | 15 | $137.39 | $2,061 |
| 99222 Hospital E&M - Initial | Facility | 15 | 15 | $105.34 | $1,580 |
By year: 2022 $40K for 365 services; 2023 $47K for 459 services; 2024 $42K for 677 services.
Medicare prescription drug claims, 2024
In 2024, the drug Chris T Derk prescribed most often to Medicare patients was Hydroxychloroquine Sulfate, with 313 prescriptions and refills. In total Chris T Derk wrote 1,524 Medicare prescriptions that cost $1.1M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Hydroxychloroquine Sulfate Generic | 313 | 496 | 60 | $9,215 |
| Prednisone Generic | 233 | 349 | 56 | $1,645 |
| Methotrexate Methotrexate Sodium | 98 | 163 | 23 | $1,729 |
| Gabapentin Generic | 71 | 115 | 19 | $1,022 |
| Celecoxib Generic | 57 | 75 | 11 | $1,470 |
| Tramadol Hcl Generic | 55 | 55 | Under 11 | $1,016 |
| Azathioprine Generic | 45 | 65 | Under 11 | $1,254 |
| Mycophenolate Mofetil Generic | 40 | 85 | 13 | $4,424 |
| Meloxicam Generic | 39 | 57 | 16 | $140 |
| Allopurinol Generic | 31 | 53 | Under 11 | $129 |
| Duloxetine Hcl Generic | 28 | 30 | Under 11 | $323 |
| Humira Adalimumab | 24 | 25 | Under 11 | $238K |
| Kineret Anakinra | 24 | 24 | Under 11 | $137K |
| Leflunomide Generic | 22 | 40 | Under 11 | $1,625 |
| Alendronate Sodium Generic | 20 | 28 | Under 11 | $123 |
Brand drugs: - claims; generic drugs: 1,357 claims; opioid claims: 98.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid Chris T Derk $33K ($33K in general payments such as food, travel and fees) from 5 companies. The largest payer was AstraZeneca UK Limited with $32K.
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.