PROVIDER PROFILE · NPI 1851411847

Gregory DorenM.D.

PRACTICECHICAGO OPHTHALMOLOGY, P.C.See all providers at this practice →

OphthalmologyChicago, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,133

Unique beneficiaries

—

Total services

2,857

Distinct HCPCS

Medicare payment

$203K

Peer benchmark

Total Medicare services vs. 667 Ophthalmology providers in IL — above median (cohort median 2,192).

PRESCRIBING · PART D · 2024

Total Rx claims

1,979

Beneficiaries

—

Total drug cost

$90K

Distinct drugs

Brand share

19.5%

Top prescribed drugs

Latanoprost678 claims

Prednisolone Acetate228 claims

Dorzolamide Hcl188 claims

Erythromycin Base166 claims

Timolol Maleate165 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where Gregory Doren'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
CENTRAL DUPAGE HOSPITAL ASSOCIATION	29	42
NORTHWESTERN MEMORIAL HEALTHCARE	24	34
Robert Perlmuter Internal Medicine · Chicago, IL	21	87
SAINT ANTHONY HOSPITAL	11	16

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