What is Marianna Bilis's specialty?

Marianna Bilis (NPI 1912976044) is a Medicare-billing provider whose primary specialty is Optometry in Chicago, IL.

Where does Marianna Bilis practice?

Marianna Bilis practices in Chicago, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1912976044.

How much does Medicare pay Marianna Bilis?

Marianna Bilis (NPI 1912976044) received approximately $305K in total Medicare Part B payments, serving 2,339 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1912976044

Marianna BilisO.D.

PRACTICECHARLES OVITSKYSee all providers at this practice →

OptometryChicago, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,570

Unique beneficiaries

—

Total services

2,911

Distinct HCPCS

Medicare payment

$301K

Peer benchmark

Total Medicare services vs. 1,316 Optometry providers in IL — top quintile (cohort median 376).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

Final MIPS score

97.2

Quality

74.5

Cost

0.0

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.94%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where Marianna Bilis'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). 76 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
LIFESCAN LABORATORY, INC.	408	1,117
Rachel Brown Physician Assistant · Skokie, IL	100	119
Superior Air-Ground Ambulance Service, Inc Ambulance Service Provider · Elmhurst, IL	90	114
SINGH, RANJEET	62	306
CORY, ROBERT	56	69
ENDEAVOR HEALTH CLINICAL OPERATIONS	56	108
Brian Aronson Podiatry · Chicago, IL	47	56
Elizabeth Wengel Nurse Practitioner · Chicago, IL	45	53
Felix Fonge Nurse Practitioner · Hinsdale, IL	43	93
Jong Jin Internal Medicine · Chicago, IL	39	82
Walter Halek Podiatry · Chicago, IL	38	83
Sunto Yen Physical Medicine and Rehabilitation · Hillside, IL	36	104

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