What is Catherine Koop's specialty?

Catherine Koop (NPI 1851358972) is a Medicare-billing provider whose primary specialty is Internal Medicine in Oak Park, IL.

Where does Catherine Koop practice?

Catherine Koop practices in Oak Park, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1851358972.

How much does Medicare pay Catherine Koop?

Catherine Koop (NPI 1851358972) received approximately $93K in total Medicare Part B payments, serving 241 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1851358972

Catherine KoopM.D.

Internal MedicineOak Park, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

949

Unique beneficiaries

—

Total services

1,157

Distinct HCPCS

Medicare payment

$90K

Peer benchmark

Total Medicare services vs. 3,790 Internal Medicine providers in IL — above median (cohort median 760).

PRESCRIBING · PART D · 2024

Total Rx claims

2,960

Beneficiaries

—

Total drug cost

$100K

Distinct drugs

Brand share

18.4%

Top prescribed drugs

Atorvastatin Calcium217 claims

Amlodipine Besylate209 claims

Levothyroxine Sodium175 claims

Simvastatin128 claims

Escitalopram Oxalate104 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Catherine Koop'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). 20 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Paula Grabler Diagnostic Radiology · Chicago, IL	63	173
Lisa Ravindra Internal Medicine · Oak Park, IL	40	207
Jagadeesh Singh Diagnostic Radiology · Chicago, IL	38	114
NPI 1194783076	33	66
John Meyer Diagnostic Radiology · Chicago, IL	25	61
Naziha Malik Pulmonary Disease · Tulsa, OK	20	89
Ewa Dembowski Cardiology · Mount Prospect, IL	19	47
COURTNEY, JOHN	17	46
Robert Liebman Diagnostic Radiology · Naperville, IL	16	49
Peter Kurko Emergency Medicine · Libertyville, IL	15	40
Nancy Eiseman Emergency Medicine · Lisle, IL	14	45
LOYOLA UNIVERSITY MEDICAL CENTER	13	39

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