What is Maria Onak's specialty?

Maria Onak (NPI 1700074754) is a Medicare-billing provider whose primary specialty is Nurse Practitioner in Glenview, IL.

Where does Maria Onak practice?

Maria Onak practices in Glenview, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1700074754.

How much does Medicare pay Maria Onak?

Maria Onak (NPI 1700074754) received approximately $32K in total Medicare Part B payments, serving 149 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1700074754

Maria OnakAPN-CNP

Nurse PractitionerGlenview, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

215

Unique beneficiaries

—

Total services

342

Distinct HCPCS

Medicare payment

$31K

Peer benchmark

Total Medicare services vs. 7,761 Nurse Practitioner providers in IL — above median (cohort median 268).

PRESCRIBING · PART D · 2024

Total Rx claims

135

Beneficiaries

—

Total drug cost

$5K

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Gabapentin40 claims

Desipramine Hcl26 claims

Mirtazapine21 claims

Dicyclomine Hcl13 claims

Ondansetron Hcl12 claims

QUALITY · MIPS · 2024

Final MIPS score

84.9

Quality

75.9

Cost

74.6

Improvement activities

40.0

Promoting interop.

99.0

Payment adjustment

0.42%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Maria Onak'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). 5 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
David Chiou Internal Medicine · Mundelein, IL	24	228
RIVER VIEW REHAB CENTER, LLC	19	88
LIFESCAN LABORATORY, INC.	15	162
Superior Air-Ground Ambulance Service, Inc Ambulance Service Provider · Elmhurst, IL	12	28
NPI 1376986299	12	74

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