What is Brian Larsen's specialty?

Brian Larsen (NPI 1083871974) is a Medicare-billing provider whose primary specialty is Ophthalmology in Lombard, IL.

Where does Brian Larsen practice?

Brian Larsen practices in Lombard, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1083871974.

How much does Medicare pay Brian Larsen?

Brian Larsen (NPI 1083871974) received approximately $3.9M in total Medicare Part B payments, serving 1,080 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1083871974

Brian LarsenM.D.

OphthalmologyLombard, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

3,110

Unique beneficiaries

—

Total services

26,648

Distinct HCPCS

Medicare payment

$3.7M

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

432

Beneficiaries

—

Total drug cost

$35K

Distinct drugs

Brand share

35.0%

Top prescribed drugs

Latanoprost125 claims

Prednisolone Acetate56 claims

Dorzolamide Hcl/Timolol Maleat48 claims

Bromfenac Sodium34 claims

Erythromycin Base30 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$12K

Payment records

By payment type

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$8K

Consulting Fee$3K

Food and Beverage$627

Top paying entities

Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$8K

Consulting Fee$3K

Food and Beverage$627

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (3)

CCN 140124

Hospital

CCN 140200

Hospital

CCN 140276

Hospital

REFERRAL NETWORK

Where Brian Larsen'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). 10 inbound referrers · 22 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
GOTTLIEB COMMUNITY HEALTH SERVICES CORPORATION	88	202
LOYOLA UNIVERSITY MEDICAL CENTER	55	225
CENTRAL DUPAGE HOSPITAL ASSOCIATION	47	60
CML-CHICAGO MARKET LABS, INC.	32	56
Michael Saidel Ophthalmology · Sonoma, CA	29	72
David Cusick Cardiology · Berwyn, IL	20	32
Charles Kinder Clinical Cardiac Electrophysiology · Berwyn, IL	18	32
ADVENTIST MIDWEST HEALTH	15	31
Reeni Karavattuveetil Diagnostic Radiology · Berwyn, IL	14	16
Christopher Bane Interventional Cardiology · Berwyn, IL	12	17

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
GOTTLIEB COMMUNITY HEALTH SERVICES CORPORATION	97	229
LOYOLA UNIVERSITY MEDICAL CENTER	82	263
CENTRAL DUPAGE HOSPITAL ASSOCIATION	50	71
Ronald Weiss Ophthalmology · Stickney, IL	39	85
CML-CHICAGO MARKET LABS, INC.	29	48
Ameet Parikh Cardiology · Seattle, WA	25	53
Kishin Ramani Cardiology · Berwyn, IL	21	52
Michael Saidel Ophthalmology · Sonoma, CA	21	49
Laboratory Corporation Of America Holdings Clinical Laboratory · Dublin, OH	20	27
David Cusick Cardiology · Berwyn, IL	19	55
Christopher Bane Interventional Cardiology · Berwyn, IL	17	42
Charles Kinder Clinical Cardiac Electrophysiology · Berwyn, IL	17	51

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