What is Chris Derk's specialty?

Chris Derk (NPI 1609899210) is a Medicare-billing provider whose primary specialty is Rheumatology in Philadelphia, PA.

Where does Chris Derk practice?

Chris Derk practices in Philadelphia, PA, based on the location reported in the CMS Medicare provider datasets for NPI 1609899210.

How much does Medicare pay Chris Derk?

Chris Derk (NPI 1609899210) received approximately $42K in total Medicare Part B payments, serving 224 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1609899210

Chris DerkMD

RheumatologyPhiladelphia, PAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

465

Unique beneficiaries

—

Total services

641

Distinct HCPCS

Medicare payment

$40K

Peer benchmark

Total Medicare services vs. 267 Rheumatology providers in PA — below median (cohort median 4,116).

PRESCRIBING · PART D · 2024

Total Rx claims

1,350

Beneficiaries

—

Total drug cost

$854K

Distinct drugs

Brand share

17.5%

Top prescribed drugs

Hydroxychloroquine Sulfate313 claims

Prednisone233 claims

Methotrexate Sodium98 claims

Gabapentin71 claims

Celecoxib57 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$33K

Payment records

By payment type

Consulting Fee$33K

Food and Beverage$119

Top paying entities

Consulting Fee$33K

Food and Beverage$119

REFERRAL NETWORK

Where Chris Derk's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 4 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Quest Diagnostics Clinical Laboratories Inc Clinical Laboratory · Norristown, PA	36	119
PRESBYTERIAN MEDICAL CENTER OF THE UNIVERSITY OF PENNSYLVANIA HEALTH S	24	92
Laboratory Corporation Of America Holdings Clinical Laboratory · Raritan, NJ	12	38
KIM, SUNG	12	29

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events