Doctor profile · Federal record
Dr. Chris Derk, MD
Rheumatology Physician (CMS: Rheumatology) · Internal Medicine Physician · Philadelphia, PA
- NPI 1609899210
- Accepts Medicare
- MIPS 85.5 / 100 · 2023
- 32 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
3400 Spruce St, Suite 600
Philadelphia, PA 191044208
(215) 662-2454
fax (215) 923-5828
Credentials & registration
- NPI registered
- July 2006 — 20 yrs on file
- Profile last updated
- November 23, 2011
- Year of graduation
- 1994 — 32 yrs since
- Specialty taxonomy
- 207RR0500X — NUCC code
- State license (1)
- Pennsylvania #MD060853L
- Medicaid (2)
- PA #0005398 · PA #001961082
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1609899210. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
419
Distinct HCPCS
6
Medicare allowed
$60,600
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 173 | 95 | $151 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 112 | 78 | $149 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 45 | 39 | $101 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 39 | 33 | $99 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 26 | 26 | $188 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 24 | 24 | $190 |
In context: peer comparison
Among 31 peers in this city , average services per provider: 860. This provider delivers 0.5× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
1,020
Patients
154
Total drug cost
$365,469
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Hydroxychloroquine Sulfate | Generic | 311 | 60 | $12,416 |
| Prednisone | Generic | 246 | 54 | $1,797 |
| Methotrexate (Methotrexate Sodium) | Brand | 105 | 23 | $3,430 |
| Gabapentin | Generic | 65 | 17 | $1,630 |
| Tramadol Hcl | Generic | 54 | 0 | $1,497 |
| Mycophenolate Mofetil | Generic | 36 | 0 | $4,267 |
| Celecoxib | Generic | 31 | 0 | $1,952 |
| Alendronate Sodium | Generic | 25 | 0 | $156 |
| Azathioprine | Generic | 25 | 0 | $1,182 |
| Allopurinol | Generic | 23 | 0 | $228 |
Hospital affiliations
Frequently asked questions
What is Dr. Chris Derk's medical specialty?
Dr. Chris Derk practices Rheumatology Physician in Philadelphia, PA.
Where does Dr. Chris Derk practice?
Dr. Chris Derk practices at 3400 Spruce St, Philadelphia, PA 191044208. Office phone: 2156622454.
What is Dr. Chris Derk's NPI?
Dr. Chris Derk's National Provider Identifier (NPI) is 1609899210, issued by NPPES.
Does Dr. Chris Derk accept Medicare assignment?
Yes. Dr. Chris Derk accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Chris Derk commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); Established patient office or other outpatient visit (HCPCS 99215); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.