What is Olga Marsillio's specialty?

Olga Marsillio (NPI 1841558897) is a Medicare-billing provider whose primary specialty is Certified Registered Nurse Anesthetist (CRNA) in New London, CT.

Where does Olga Marsillio practice?

Olga Marsillio practices in New London, CT, based on the location reported in the CMS Medicare provider datasets for NPI 1841558897.

How much does Medicare pay Olga Marsillio?

Olga Marsillio (NPI 1841558897) received approximately $12K in total Medicare Part B payments, serving 139 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1841558897

Olga MarsillioDNP

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Certified Registered Nurse Anesthetist (CRNA)New London, CTI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$2K

Peer benchmark

Total Medicare services vs. 679 Certified Registered Nurse Anesthetist (CRNA) providers in CT — above median (cohort median 102).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

Final MIPS score

100.0

Quality

86.5

Cost

0.0

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

1.05%

APM Entity

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Olga Marsillio'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). 22 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
NORWALK HOSPITAL ASSOCIATION	185	342
Norwalk Surgery Center, Llc Ambulatory Surgical Center · Norwalk, CT	82	95
BEILES, PAUL	69	80
Quest Diagnostics Llc Clinical Laboratory · Wallingford, CT	43	72
Gillian Levy Pathology · Norwalk, CT	38	44
Soma Karak Pathology · Norwalk, CT	32	35
Richard Hughes Anesthesiology · Norwalk, CT	27	30
MICHAELSON, STEPHEN	24	30
Frank Sammarco Gastroenterology · Norwalk, CT	24	66
DICORATO, MICHAEL	23	27
Heather Frimmer Diagnostic Radiology · Norwalk, CT	20	23
RIBACK, HARVEY	19	52

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