Chris T. Derk, MD
Rheumatology Physician · Philadelphia, PA
Chris T. Derk, MD is a rheumatology physician with a practice address in Philadelphia, Pennsylvania, and NPI 1609899210, issued on Jul 25, 2006. Check the license (Pennsylvania MD060853L, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Chris T. Derk
- Credential
- MD
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- MD060853L PA
Self-reported in NPPES; status is on the state search - Practice location
- 3400 Spruce St, Philadelphia, PA 19104
- Phone
- (215) 662-2454
- Enumerated
- Jul 25, 2006
- Record last updated
- Nov 23, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (215) 923-5828
- Medicaid IDs
- 0005398 PA
001961082 PA - Medicare enrollment
- Enrolled (PECOS I20050215000109); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 1994
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 413 in Pennsylvania → Look up another NPI →
Also registered at 3400 Spruce St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Megan Abbott, CRNPNurse Practitioner1396771689
- Michael Abboud, MDEmergency Medicine Physician1962820852
- Emily AbdelmessihPediatric Pharmacist1891612560
- Mohammed AbdullahStudent in an Organized Health Care Education/Training Program1013595495
- Amin Abedini, MDStudent in an Organized Health Care Education/Training Program1912609017
- Farid Aboharb, MD, PHDStudent in an Organized Health Care Education/Training Program1295595973
Verify Chris T. Derk in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD060853LCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,524 Medicare Part D claims for 207 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 98 claims were for opioids.
Most prescribed
- Hydroxychloroquine Sulfate313 claims
- Prednisone233 claims
- Methotrexate98 claims
- Gabapentin71 claims
- Celecoxib57 claims
- Tramadol Hcl55 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 85.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- University OF Penn - Medical GroupRadnor, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chris T. Derk among 413 rheumatology physician records in Pennsylvania
Chris T. Derk, MD is one of 413 rheumatology physician records with a practice address in Pennsylvania. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 53% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1994 · median 2004 among the 275 with a school on file
- Record last updated2011 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Pennsylvania
There are 413 rheumatology physician records in Pennsylvania.
All 413 in Pennsylvania → Every provider in Philadelphia → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- David Allan, MDPhiladelphia, PA 191041376518233
- Androniki Bili, M.D.Philadelphia, PA 191041104802719
- Belinda Birnbaum, MDPhiladelphia, PA 191041669469573
- Geo Derimanov, MDPhiladelphia, PA 191041932135407
- Jonathan Dunham, MDPhiladelphia, PA 191041376583310
- Robert Eisenberg, MDPhiladelphia, PA 191041881630911
- Benjamin Hsu, MDPhiladelphia, PA 191041487698023
- William Kelley, MDPhiladelphia, PA 191041710914700
Common questions
What is Chris T. Derk, MD's NPI number?
Chris T. Derk, MD's National Provider Identifier (NPI) is 1609899210, issued on Jul 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Chris T. Derk, MD located?
The NPPES record lists a practice address at 3400 Spruce St, Philadelphia, PA, 19104. Phone: (215) 662-2454. Providers update this record themselves, so call before visiting.
How can I verify Chris T. Derk, MD's license?
NPPES lists Pennsylvania license number MD060853L, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Chris T. Derk, MD prescribe under Medicare Part D?
In 2024, Chris T. Derk, MD had 1,524 Medicare Part D claims for 207 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Chris T. Derk, MD's MIPS final score?
The 2023 MIPS final score is 85.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.